parallelvirtualcluster
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pvc
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Massive rejigger into single daemon 

Completely restructure the daemon code to move the 4 discrete daemons
into a single daemon that can be run on every hypervisor. Introduce the
idea of a static list of "coordinator" nodes which are configured at
install time to run Zookeeper and FRR in router mode, and which are
allowed to take on client network management duties (gateway, DHCP, DNS,
etc.) while also allowing them to run VMs (i.e. no dedicated "router"
nodes required).
This commit is contained in:
Joshua Boniface 2018-10-14 02:01:35 -04:00
parent 25df845769
commit f198f62563
57 changed files with 1726 additions and 2307 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
.gitlab-ci.yml
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@ -7,7 +7,7 @@ build:
before_script:
- git submodule update --init
script:
- /usr/local/bin/build-package 0.3
- /usr/local/bin/build-package 0.4
- /usr/local/bin/deploy-package
artifacts:
paths:

66
README.md
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@ -2,65 +2,71 @@
#### NOTICE FOR GITHUB
This software is still incomplete, and should be considered pre-alpha and not suitable for production use! Not all features described below are implemented, and I will be committing directly to master until they are. If you wish to test out PVC, the following table details the currently-working features, but be warned that functionality may change regularly. Use the tag `v0.3` for a stable implementation of the working features.
* Working features: pvcvd, cli-client (for VM and hypervisor management)
* In progress features: pvcrd, pvcnd, cli-client support for the aforementioned
* Unstarted features: pvcpd, api-client, web-client
This software is still incomplete, and should be considered pre-alpha and not suitable for production use! Not all features described below are implemented, and I will be committing directly to master until they are (version 1.0).
[![pipeline status](https://git.bonifacelabs.ca/bonifacelabs/pvc/badges/master/pipeline.svg)](https://git.bonifacelabs.ca/bonifacelabs/pvc/commits/master)
![Logo](https://git.bonifacelabs.ca/uploads/-/system/project/avatar/135/pvc_logo.png)
PVC is a suite of Python 3 tools to manage virtualized clusters. It provides a fully-functional private cloud based on the priciple that "PVC is not hyperscale". It is designed to be administrator-friendly while powerful, but without the feature bloat and complexity of tools like OpenStack that are designed to support public clouds. With PVC, an administrator can provision, manage, and update a cluster of dozens or more hypervisors running thousands of VMs using a simple CLI tool, HTTP API, or web interface. PVC is based entirely on Debian GNU/Linux and Free-and-Open-Source tools, providing the glue to provision and manage the cluster.
PVC is a suite of Python 3 tools to manage virtualized clusters. It provides a fully-functional private cloud based on the priciple that "PVC is not hyperscale". It is designed to be administrator-friendly while powerful, but without the feature bloat and complexity of tools like OpenStack that are designed to support public clouds. With PVC, an administrator can provision, manage, and update a cluster of dozens or more hypervisors running thousands of VMs using a simple CLI tool, HTTP API, or web interface. PVC is based entirely on Debian GNU/Linux and Free-and-Open-Source tools, providing the glue to bootstrap, provision and manage the cluster. Just add physical servers.
## Architecture overview
A PVC deployment ("cluster") consists of a standard physical layout and suite of daemons to manage the physical elements. The cluster is backed by a Zookeeper instance running on a subset of the machines and which all daemons communicate with to coordinate state.
A PVC deployment ("cluster") consists of a cluster of hosts which share duties using a single daemon. The cluster is backed by a Zookeeper instance running on a subset of the machines and which all daemons communicate with to coordinate state.
### Physical infrastructure
A cluster consists of two main kinds of physical servers - routers and hypervisors. A cluster will normally have two routers in a failover pair, and at least three hypervisors.
The PVC system depends on a cluster of 3 or more physical servers. Each server must have the capability to run storage, client networks, and VMs, and a subset of these servers are configured at install time to also act as routers for the cluster.
Router nodes may be less powerful than full hypervisors; they act primarily as the gateway for VM networks and handles inter-network ACLs. While they are not strictly required, a proper deployment with all functionality will require them.
The underlying networking is left up to the administrator; the only requirement is that all routers and hypervisors must be reachable by each other. In the simplest deployment, all physical nodes may be connected to a single dumb switch. All inter-VM networking is handled dynamically via software-defined networking within the cluster itself and is handled transparently above the underlying network layer. More advanced configurations may be specified during cluster initalization, including upstream networks, storage networks, and advanced node-level network configuration (vLANs, bonds, etc.)
Hypervisor nodes should be scaled at the administrator's discretion; they may be low-power and scaled out, or high-power and scaled up. PVC provides a straightforward automated provisioning system to expand the cluster as required.
The coordinator hosts [see below] require an additional upstream network. These hosts advertise BGP routes to the cluster networks on their upstream interface, and accept traffic destined to the clients; they route between themselves to reach VMs out the primary gateway node, so all coordinators are valid route targets. The router components of the daemon makes no effort to perform NAT or Internet gateway functions; an upstream router should be configured for this purpose.
The underlying networking is left up to the administrator; the only requirement is that all routers and hypervisors must be reachable by each other. In the simplest deployment, all physical nodes may be connected to a single dumb switch. All inter-VM networking is handled dynamically via software-defined networking within the cluster itself and is handled transparently above the underlying network layer. More advanced configurations may be specified during cluster initalization.
PVC supports fencing of nodes when they do not update the Zookeeper database in a fixed, configurable time, to provide automated recovery from node failures. This feature requires IPMI networked BMC support, and credentials should be specified in in the configuration. Preparing IPMI for PVC's use is left to the administrator.
### Software infrastructure
The core functionality of PVC is obtained via Zookeeper. During cluster initalization, the administrator must set either 3 or 5 hypervisors to act as the Zookeeper coordination subcluster. These hypervisors are special in the cluster and should not be removed after creation. This configuration prevents Zookeeper cluster size bloat as the cluster grows while still providing adequate redundancy for Zookeeper.
The PVC server-side infrastructure consists of a single daemon, `pvcd`, which manages each node based on connectivity to the Zookeeper cluster. All nodes are capable of running virtual machines, Ceph storage OSDs, and passing traffic to virtual machines via configured networks.
All daemons communicate with Zookeeper to obtain state, and update Zookeper as required, providing a high degree of self-management. Most major failure conditions are handled transparently by the cluster.
A subset of the nodes are designated at install time to act as "coordinator" hosts for the cluster. By default, 3 or 5 nodes can be designated as coordinators; 3 is ideal for small deployments (<30 hypervisors) while 5 allow for much larger scaling. These coordinators run additional functions for the cluster beyond VMs and storage, mainly:
FRRouting is used to manage virtual networking via BGP EVPN, and Libvirt is used to manage virtual machines.
* running Zookeeper itself, acting as the central database for the cluster.
* running FRRouting in BGP server mode, performing route reflector and upstream routing functionality.
* running Ceph monitor and manager daemons for the storage cluster.
* acting as client network gateways, DHCP, and DNS servers.
* acting as provisioning servers for nodes and VMs.
PVC itself is composed of four daemons:
A single coordinator elects itself "primary" to perform this duty at startup, and passes it off on shutdown; this can be modified manually by the administrator. The primary coordinator handles provisioning and client network functionality (gateway, DHCP, DNS) for the whole cluster, which the "secondary" coordinators can take over automatically if needed. While this architecture can suffer from tromboning when there is a larger inter-network traffic flow, it preserves a consistent and simple layer-2 model inside each client network for administrative simplicity.
* Virtualization
* Network
* Router
* Provisioning
New nodes can be added dynamically; once running, the cluster supports the PXE booting of additional hypervisors which are then self-configured and added to the cluster via the provisioning framework. This framework also allows for the quick deployment of VMs based off Ceph-stored images and templates.
#### Virtualization
The core external components are:
The virtualization daemon (`pvcvd`, package `pvc-virtualization-daemon`) manages QEMU/KVM virtual machines on hypervisor nodes. Domain configurations are stored in Zookeeper and VMs are dynamically created on hypervisor nodes based on Zookeeper configuration values. The virtualization daemon handles all stages of the VM lifecycle, including triggering startup, restart, graceful ACPI shutdown, and forceful termination.
#### Zookeeper
By default, each VM lives on a particular "home" node, and can be live migrated away either temporarily (`migrate`) or permanently (`move`). During provisioning and normal `migrate`/`move` commands, the selection of the target hypervisor is dynamic, based on administator-configurable variables.
Zookeeper is the primary database of the cluster, running on the coordinator nodes. All activity in the cluster is mediated by Zookeeper: clients read and write data to it, and daemons determine and update object configuration and state from it. The bootstrap tool initializes the cluster on the initial set of coordinator hosts, and once configured requires manual administrative action to modify; future version using Zookeeper 3.5 may offer self-managing functionality.
#### Network
Coordinator hosts automatically attempt to start the Zookeeper daemon when they start up, if it has been shut down. If the Zookeeper cluster connection is lost, all clients will pause state update operations while waiting to reconnect. Note that fencing may be triggered if only one node loses Zookeeper connectivity, as the paused operations will prevent keepalives from being sent to the cluster. Take care when rebooting coordinator nodes so that the Zookeeper cluster continues to function normally.
The network daemon (`pvcnd`, package `pvc-network-daemon`) manages the hypervisor-side virtual networking for the cluster. It is responsible for provisioning VXLAN devices on hypervisor nodes for VM network access.
#### FRRouting
#### Router
FRRouting is used to provide BGP for management of client networks. It makes use of BGP EVPN to allow dynamic, software-defined VXLAN client networks presenting as simple layer-2 networks. VMs inside a particular client network can communicate directly as if they shared a switch. FRRouting also provides upstream BGP, allowing routes to the dynamic client networks to be learned by upstream routers.
The router daemon (`pvcrd`, package `pvc-router-daemon`) manages the router-side virtual networking for the cluster. It includes functionality for managing the gateways of each virtual network, as well as providing network ACLs and IP forwarding to an upsteam, and DHCP for client networks.
#### dnsmasq
#### Provisioning
dnsmasq is used by the coordinator nodes to provide DHCP and DNS support for client networks. An individual instance is started on the primary coordinator for each network, handling that network specifically.
The provisioning daemon (`pvcpd`, package `pvc-provisioning-daemon`) manages the setup and creation of new physical nodes, new virtual machines, as well as handling updates of the cluster. The provisioning daemon can be run on any nodes, but is normally run on the routers to simplify administration.
#### PowerDNS
PowerDNS is used by the coordinator nodes to aggregate client DNS records from the dnsmasq instances and present a complete picture of the cluster DNS to clients and the outside world. An instance runs on the primary coordinator aggregating dnsmasq entries, which can then be sent to other DNS servers via AXFR, including the in-cluster DNS servers usable by clients, which also make use of PowerDNS.
#### Libvirt
Libvirt is used to manage virtual machines in the cluster. It uses the TCP communication mode to perform live migrations between nodes and must be listening on daemon startup.
#### Ceph
Ceph provides the storage infrastructure to the cluster using RBD block devices. OSDs live in each node and VM disks are stored in copies of 3 across the cluster, ensuring a high degree of resiliency. The monitor and manager functions run on the coordinator nodes for scalability.
### Client interfaces
@ -91,6 +97,10 @@ While not specifically an interface, the Python functions used by the above inte
## Changelog
#### 0.4
* Recombination of daemons and expansion of functionality into client network management and routing.
#### 0.3
* Major revisions to expand functionality.

2
build-deb.sh
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@ -1,5 +1,5 @@
#!/bin/sh
ver="0.3"
ver="0.4"
git pull
rm ../pvc_*
dh_make -p pvc_${ver} --createorig --single --yes

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cli-client/client_lib
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@ -1 +0,0 @@
../client-common/client_lib

1
client-cli/client_lib Symbolic link
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@ -0,0 +1 @@
../client-common

177
cli-client/pvc.py → client-cli/pvc.py
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@ -31,7 +31,6 @@ import colorama
import client_lib.common as pvc_common
import client_lib.node as pvc_node
import client_lib.router as pvc_router
import client_lib.vm as pvc_vm
import client_lib.network as pvc_network
@ -54,13 +53,44 @@ def cleanup(retcode, retmsg, zk_conn):
###############################################################################
# pvc node
###############################################################################
@click.group(name='node', short_help='Manage a PVC hypervisor node.', context_settings=CONTEXT_SETTINGS)
@click.group(name='node', short_help='Manage a PVC node.', context_settings=CONTEXT_SETTINGS)
def cli_node():
"""
Manage the state of a node in the PVC cluster.
"""
pass
###############################################################################
# pvc node secondary
###############################################################################
@click.command(name='secondary', short_help='Set a node in secondary node status.')
@click.argument(
'node'
)
def node_secondary(node):
"""
Take NODE out of primary router mode.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_node.secondary_node(zk_conn, node)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc node primary
###############################################################################
@click.command(name='primary', short_help='Set a node in primary status.')
@click.argument(
'node'
)
def node_primary(node):
"""
Put NODE into primary router mode.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_node.primary_node(zk_conn, node)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc node flush
@ -140,92 +170,13 @@ def node_info(node, long_output):
)
def node_list(limit):
"""
List all hypervisor nodes in the cluster; optionally only match names matching regex LIMIT.
List all nodes in the cluster; optionally only match names matching regex LIMIT.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_node.get_list(zk_conn, limit)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc router
###############################################################################
@click.group(name='router', short_help='Manage a PVC router.', context_settings=CONTEXT_SETTINGS)
def cli_router():
"""
Manage the state of a router in the PVC cluster.
"""
pass
###############################################################################
# pvc router secondary
###############################################################################
@click.command(name='secondary', short_help='Set a router in secondary status.')
@click.argument(
'router'
)
def router_secondary(router):
"""
Take ROUTER out of primary mode handling gateways and into secondary mode.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_router.secondary_router(zk_conn, router)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc router primary
###############################################################################
@click.command(name='primary', short_help='Set a router in primary status.')
@click.argument(
'router'
)
def router_primary(router):
"""
Put ROUTER into primary mode handling gateways.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_router.primary_router(zk_conn, router)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc router info
###############################################################################
@click.command(name='info', short_help='Show details of a router object.')
@click.argument(
'router'
)
@click.option(
'-l', '--long', 'long_output', is_flag=True, default=False,
help='Display more detailed information.'
)
def router_info(router, long_output):
"""
Show information about router ROUTER.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_router.get_info(zk_conn, router, long_output)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc router list
###############################################################################
@click.command(name='list', short_help='List all router objects.')
@click.argument(
'limit', default=None, required=False
)
def router_list(limit):
"""
List all routers in the cluster; optionally only match names matching regex LIMIT.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_router.get_list(zk_conn, limit)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
# pvc vm
###############################################################################
@ -241,18 +192,18 @@ def cli_vm():
###############################################################################
@click.command(name='define', short_help='Define a new virtual machine from a Libvirt XML file.')
@click.option(
'-t', '--hypervisor', 'target_hypervisor',
help='Home hypervisor for this domain; autodetect if unspecified.'
'-n', '--node', 'target_node',
help='Home node for this domain; autodetect if unspecified.'
)
@click.option(
'-s', '--selector', 'selector', default='mem', show_default=True,
type=click.Choice(['mem','load','vcpus','vms']),
help='Method to determine optimal target hypervisor during autodetect.'
help='Method to determine optimal target node during autodetect.'
)
@click.argument(
'config', type=click.File()
)
def vm_define(config, target_hypervisor, selector):
def vm_define(config, target_node, selector):
"""
Define a new virtual machine from Libvirt XML configuration file CONFIG.
"""
@ -262,7 +213,7 @@ def vm_define(config, target_hypervisor, selector):
config.close()
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_vm.define_vm(zk_conn, config_data, target_hypervisor, selector)
retcode, retmsg = pvc_vm.define_vm(zk_conn, config_data, target_node, selector)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
@ -391,7 +342,7 @@ def vm_undefine(domain):
)
def vm_start(domain):
"""
Start virtual machine DOMAIN on its configured hypervisor. DOMAIN may be a UUID or name.
Start virtual machine DOMAIN on its configured node. DOMAIN may be a UUID or name.
"""
# Open a Zookeeper connection
@ -458,22 +409,22 @@ def vm_stop(domain):
'domain'
)
@click.option(
'-t', '--hypervisor', 'target_hypervisor', default=None,
help='Target hypervisor to migrate to; autodetect if unspecified.'
'-n', '--node', 'target_node', default=None,
help='Target node to migrate to; autodetect if unspecified.'
)
@click.option(
'-s', '--selector', 'selector', default='mem', show_default=True,
type=click.Choice(['mem','load','vcpus','vms']),
help='Method to determine optimal target hypervisor during autodetect.'
help='Method to determine optimal target node during autodetect.'
)
def vm_move(domain, target_hypervisor, selector):
def vm_move(domain, target_node, selector):
"""
Permanently move virtual machine DOMAIN, via live migration if running and possible, to another hypervisor node. DOMAIN may be a UUID or name.
Permanently move virtual machine DOMAIN, via live migration if running and possible, to another node. DOMAIN may be a UUID or name.
"""
# Open a Zookeeper connection
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_vm.move_vm(zk_conn, domain, target_hypervisor, selector)
retcode, retmsg = pvc_vm.move_vm(zk_conn, domain, target_node, selector)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
@ -484,26 +435,26 @@ def vm_move(domain, target_hypervisor, selector):
'domain'
)
@click.option(
'-t', '--hypervisor', 'target_hypervisor', default=None,
help='Target hypervisor to migrate to; autodetect if unspecified.'
'-n', '--node', 'target_node', default=None,
help='Target node to migrate to; autodetect if unspecified.'
)
@click.option(
'-s', '--selector', 'selector', default='mem', show_default=True,
type=click.Choice(['mem','load','vcpus','vms']),
help='Method to determine optimal target hypervisor during autodetect.'
help='Method to determine optimal target node during autodetect.'
)
@click.option(
'-f', '--force', 'force_migrate', is_flag=True, default=False,
help='Force migrate an already migrated VM.'
)
def vm_migrate(domain, target_hypervisor, selector, force_migrate):
def vm_migrate(domain, target_node, selector, force_migrate):
"""
Temporarily migrate running virtual machine DOMAIN, via live migration if possible, to another hypervisor node. DOMAIN may be a UUID or name. If DOMAIN is not running, it will be started on the target node.
Temporarily migrate running virtual machine DOMAIN, via live migration if possible, to another node. DOMAIN may be a UUID or name. If DOMAIN is not running, it will be started on the target node.
"""
# Open a Zookeeper connection
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_vm.migrate_vm(zk_conn, domain, target_hypervisor, selector, force_migrate)
retcode, retmsg = pvc_vm.migrate_vm(zk_conn, domain, target_node, selector, force_migrate)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
@ -515,7 +466,7 @@ def vm_migrate(domain, target_hypervisor, selector, force_migrate):
)
def vm_unmigrate(domain):
"""
Restore previously migrated virtual machine DOMAIN, via live migration if possible, to its original hypervisor node. DOMAIN may be a UUID or name. If DOMAIN is not running, it will be started on the target node.
Restore previously migrated virtual machine DOMAIN, via live migration if possible, to its original node. DOMAIN may be a UUID or name. If DOMAIN is not running, it will be started on the target node.
"""
# Open a Zookeeper connection
@ -552,16 +503,16 @@ def vm_info(domain, long_output):
'limit', default=None, required=False
)
@click.option(
'-t', '--hypervisor', 'hypervisor', default=None,
help='Limit list to this hypervisor.'
'-n', '--node', 'node', default=None,
help='Limit list to this node.'
)
def vm_list(hypervisor, limit):
def vm_list(node, limit):
"""
List all virtual machines in the cluster; optionally only match names matching regex LIMIT.
"""
zk_conn = pvc_common.startZKConnection(zk_host)
retcode, retmsg = pvc_vm.get_list(zk_conn, hypervisor, limit)
retcode, retmsg = pvc_vm.get_list(zk_conn, node, limit)
cleanup(retcode, retmsg, zk_conn)
###############################################################################
@ -877,17 +828,19 @@ def init_cluster():
# Destroy the existing data
try:
zk_conn.delete('/networks', recursive=True)
zk_conn.delete('/domains', recursive=True)
zk_conn.delete('nodes', recursive=True)
zk_conn.delete('/nodes', recursive=True)
zk_conn.delete('/primary_node', recursive=True)
except:
pass
# Create the root keys
transaction = zk_conn.transaction()
transaction.create('/networks', ''.encode('ascii'))
transaction.create('/domains', ''.encode('ascii'))
transaction.create('/nodes', ''.encode('ascii'))
transaction.create('/routers', ''.encode('ascii'))
transaction.create('/networks', ''.encode('ascii'))
transaction.create('/primary_node', 'none'.encode('ascii'))
transaction.commit()
# Close the Zookeeper connection
@ -920,17 +873,14 @@ def cli(_zk_host):
#
# Click command tree
#
cli_node.add_command(node_secondary)
cli_node.add_command(node_primary)
cli_node.add_command(node_flush)
cli_node.add_command(node_ready)
cli_node.add_command(node_unflush)
cli_node.add_command(node_info)
cli_node.add_command(node_list)
cli_router.add_command(router_secondary)
cli_router.add_command(router_primary)
cli_router.add_command(router_info)
cli_router.add_command(router_list)
cli_vm.add_command(vm_define)
cli_vm.add_command(vm_modify)
cli_vm.add_command(vm_undefine)
@ -960,7 +910,6 @@ net_dhcp_static.add_command(net_dhcp_static_remove)
net_dhcp_static.add_command(net_dhcp_static_list)
cli.add_command(cli_node)
cli.add_command(cli_router)
cli.add_command(cli_vm)
cli.add_command(cli_network)
cli.add_command(init_cluster)

0
client-common/client_lib/ansiiprint.py → client-common/ansiiprint.py
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232
client-common/client_lib/router.py
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@ -1,232 +0,0 @@
#!/usr/bin/env python3
# router.py - PVC client function library, router management
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import os
import socket
import time
import uuid
import re
import tempfile
import subprocess
import difflib
import colorama
import click
import lxml.objectify
import configparser
import kazoo.client
import client_lib.ansiiprint as ansiiprint
import client_lib.zkhandler as zkhandler
import client_lib.common as common
def getInformationFromRouter(zk_conn, router_name, long_output):
router_daemon_state = zk_conn.get('/routers/{}/daemonstate'.format(router_name))[0].decode('ascii')
router_network_state = zk_conn.get('/routers/{}/networkstate'.format(router_name))[0].decode('ascii')
router_cpu_count = zk_conn.get('/routers/{}/staticdata'.format(router_name))[0].decode('ascii').split()[0]
router_cpu_load = zk_conn.get('/routers/{}/cpuload'.format(router_name))[0].decode('ascii').split()[0]
router_kernel = zk_conn.get('/routers/{}/staticdata'.format(router_name))[0].decode('ascii').split()[1]
router_os = zk_conn.get('/routers/{}/staticdata'.format(router_name))[0].decode('ascii').split()[2]
router_arch = zk_conn.get('/routers/{}/staticdata'.format(router_name))[0].decode('ascii').split()[3]
if router_daemon_state == 'run':
daemon_state_colour = ansiiprint.green()
elif router_daemon_state == 'stop':
daemon_state_colour = ansiiprint.red()
elif router_daemon_state == 'init':
daemon_state_colour = ansiiprint.yellow()
elif router_daemon_state == 'dead':
daemon_state_colour = ansiiprint.red() + ansiiprint.bold()
else:
daemon_state_colour = ansiiprint.blue()
if router_network_state == 'primary':
network_state_colour = ansiiprint.green()
else:
network_state_colour = ansiiprint.blue()
# Format a nice output; do this line-by-line then concat the elements at the end
ainformation = []
ainformation.append('{}Router information:{}'.format(ansiiprint.bold(), ansiiprint.end()))
ainformation.append('')
# Basic information
ainformation.append('{}Name:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), router_name))
ainformation.append('{}Daemon State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), daemon_state_colour, router_daemon_state, ansiiprint.end()))
ainformation.append('{}Network State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), network_state_colour, router_network_state, ansiiprint.end()))
ainformation.append('{}CPUs:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), router_cpu_count))
ainformation.append('{}Load:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), router_cpu_load))
if long_output == True:
ainformation.append('')
ainformation.append('{}Architecture:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), router_arch))
ainformation.append('{}Operating System:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), router_os))
ainformation.append('{}Kernel Version:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), router_kernel))
# Join it all together
information = '\n'.join(ainformation)
return information
#
# Direct Functions
#
def secondary_router(zk_conn, router):
# Verify router is valid
if not common.verifyRouter(zk_conn, router):
return False, 'ERROR: No router named "{}" is present in the cluster.'.format(router)
# Get current state
current_state = zkhandler.readdata(zk_conn, '/routers/{}/networkstate'.format(router))
if current_state == 'primary':
click.echo('Setting router {} in secondary mode.'.format(router))
zkhandler.writedata(zk_conn, {
'/routers': 'none'
})
else:
click.echo('Router {} is already in secondary mode.'.format(router))
return True, ''
def primary_router(zk_conn, router):
# Verify router is valid
if not common.verifyRouter(zk_conn, router):
return False, 'ERROR: No router named "{}" is present in the cluster.'.format(router)
# Get current state
current_state = zkhandler.readdata(zk_conn, '/routers/{}/networkstate'.format(router))
if current_state == 'secondary':
click.echo('Setting router {} in primary mode.'.format(router))
zkhandler.writedata(zk_conn, {
'/routers': router
})
else:
click.echo('Router {} is already in primary mode.'.format(router))
return True, ''
def get_info(zk_conn, router, long_output):
# Verify router is valid
if not common.verifyRouter(zk_conn, router):
return False, 'ERROR: No router named "{}" is present in the cluster.'.format(router)
# Get information about router in a pretty format
information = getInformationFromRouter(zk_conn, router, long_output)
click.echo(information)
return True, ''
def get_list(zk_conn, limit):
# Match our limit
router_list = []
full_router_list = zk_conn.get_children('/routers')
for router in full_router_list:
if limit != None:
try:
# Implcitly assume fuzzy limits
if re.match('\^.*', limit) == None:
limit = '.*' + limit
if re.match('.*\$', limit) == None:
limit = limit + '.*'
if re.match(limit, router) != None:
router_list.append(router)
except Exception as e:
return False, 'Regex Error: {}'.format(e)
else:
router_list.append(router)
router_list_output = []
router_daemon_state = {}
router_network_state = {}
router_cpu_count = {}
router_cpu_load = {}
# Gather information for printing
for router_name in router_list:
router_daemon_state[router_name] = zk_conn.get('/routers/{}/daemonstate'.format(router_name))[0].decode('ascii')
router_network_state[router_name] = zk_conn.get('/routers/{}/networkstate'.format(router_name))[0].decode('ascii')
router_cpu_count[router_name] = zk_conn.get('/routers/{}/staticdata'.format(router_name))[0].decode('ascii').split()[0]
router_cpu_load[router_name] = zk_conn.get('/routers/{}/cpuload'.format(router_name))[0].decode('ascii').split()[0]
# Determine optimal column widths
# Dynamic columns: router_name
router_name_length = 0
for router_name in router_list:
# router_name column
_router_name_length = len(router_name) + 1
if _router_name_length > router_name_length:
router_name_length = _router_name_length
# Format the string (header)
router_list_output.append(
'{bold}{router_name: <{router_name_length}} \
State: {daemon_state_colour}{router_daemon_state: <7}{end_colour} {network_state_colour}{router_network_state: <10}{end_colour} \
Resources: {router_cpu_count: <5} {router_cpu_load: <6}{end_bold}'.format(
router_name_length=router_name_length,
bold=ansiiprint.bold(),
end_bold=ansiiprint.end(),
daemon_state_colour='',
network_state_colour='',
end_colour='',
router_name='Name',
router_daemon_state='Daemon',
router_network_state='Network',
router_cpu_count='CPUs',
router_cpu_load='Load'
)
)
# Format the string (elements)
for router_name in router_list:
if router_daemon_state[router_name] == 'run':
daemon_state_colour = ansiiprint.green()
elif router_daemon_state[router_name] == 'stop':
daemon_state_colour = ansiiprint.red()
elif router_daemon_state[router_name] == 'init':
daemon_state_colour = ansiiprint.yellow()
elif router_daemon_state[router_name] == 'dead':
daemon_state_colour = ansiiprint.red() + ansiiprint.bold()
else:
daemon_state_colour = ansiiprint.blue()
if router_network_state[router_name] == 'primary':
network_state_colour = ansiiprint.green()
else:
network_state_colour = ansiiprint.blue()
router_list_output.append(
'{bold}{router_name: <{router_name_length}} \
{daemon_state_colour}{router_daemon_state: <7}{end_colour} {network_state_colour}{router_network_state: <10}{end_colour} \
{router_cpu_count: <5} {router_cpu_load: <6}{end_bold}'.format(
router_name_length=router_name_length,
bold='',
end_bold='',
daemon_state_colour=daemon_state_colour,
network_state_colour=network_state_colour,
end_colour=ansiiprint.end(),
router_name=router_name,
router_daemon_state=router_daemon_state[router_name],
router_network_state=router_network_state[router_name],
router_cpu_count=router_cpu_count[router_name],
router_cpu_load=router_cpu_load[router_name]
)
)
click.echo('\n'.join(sorted(router_list_output)))
return True, ''

98
client-common/client_lib/common.py → client-common/common.py
View File

@ -78,9 +78,9 @@ def getDomainMainDetails(parsed_xml):
dmemory = str(parsed_xml.memory)
dmemory_unit = str(parsed_xml.memory.attrib['unit'])
if dmemory_unit == 'KiB':
dmemory = str(int(dmemory) * 1024)
dmemory = int(int(dmemory) / 1024)
elif dmemory_unit == 'GiB':
dmemory = str(int(dmemory) / 1024)
dmemory = int(int(dmemory) * 1024)
dvcpu = str(parsed_xml.vcpu)
try:
dvcputopo = '{}/{}/{}'.format(parsed_xml.cpu.topology.attrib['sockets'], parsed_xml.cpu.topology.attrib['cores'], parsed_xml.cpu.topology.attrib['threads'])
@ -185,106 +185,106 @@ def verifyRouter(zk_conn, router):
#
# Get the list of valid target hypervisors
# Get the list of valid target nodes
#
def getHypervisors(zk_conn, dom_uuid):
valid_hypervisor_list = []
full_hypervisor_list = zk_conn.get_children('/nodes')
def getNodes(zk_conn, dom_uuid):
valid_node_list = []
full_node_list = zk_conn.get_children('/nodes')
try:
current_hypervisor = zk_conn.get('/domains/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
current_node = zk_conn.get('/domains/{}/node'.format(dom_uuid))[0].decode('ascii')
except:
current_hypervisor = None
current_node = None
for hypervisor in full_hypervisor_list:
daemon_state = zk_conn.get('/nodes/{}/daemonstate'.format(hypervisor))[0].decode('ascii')
domain_state = zk_conn.get('/nodes/{}/domainstate'.format(hypervisor))[0].decode('ascii')
for node in full_node_list:
daemon_state = zk_conn.get('/nodes/{}/daemonstate'.format(node))[0].decode('ascii')
domain_state = zk_conn.get('/nodes/{}/domainstate'.format(node))[0].decode('ascii')
if hypervisor == current_hypervisor:
if node == current_node:
continue
if daemon_state != 'run' or domain_state != 'ready':
continue
valid_hypervisor_list.append(hypervisor)
valid_node_list.append(node)
return valid_hypervisor_list
return valid_node_list
#
# Find a migration target
#
def findTargetHypervisor(zk_conn, search_field, dom_uuid):
def findTargetNode(zk_conn, search_field, dom_uuid):
if search_field == 'mem':
return findTargetHypervisorMem(zk_conn, dom_uuid)
return findTargetNodeMem(zk_conn, dom_uuid)
if search_field == 'load':
return findTargetHypervisorLoad(zk_conn, dom_uuid)
return findTargetNodeLoad(zk_conn, dom_uuid)
if search_field == 'vcpus':
return findTargetHypervisorVCPUs(zk_conn, dom_uuid)
return findTargetNodeVCPUs(zk_conn, dom_uuid)
if search_field == 'vms':
return findTargetHypervisorVMs(zk_conn, dom_uuid)
return findTargetNodeVMs(zk_conn, dom_uuid)
return None
# via free memory (relative to allocated memory)
def findTargetHypervisorMem(zk_conn, dom_uuid):
def findTargetNodeMem(zk_conn, dom_uuid):
most_allocfree = 0
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
memalloc = int(zk_conn.get('/nodes/{}/memalloc'.format(hypervisor))[0].decode('ascii'))
memused = int(zk_conn.get('/nodes/{}/memused'.format(hypervisor))[0].decode('ascii'))
memfree = int(zk_conn.get('/nodes/{}/memfree'.format(hypervisor))[0].decode('ascii'))
node_list = getNodes(zk_conn, dom_uuid)
for node in node_list:
memalloc = int(zk_conn.get('/nodes/{}/memalloc'.format(node))[0].decode('ascii'))
memused = int(zk_conn.get('/nodes/{}/memused'.format(node))[0].decode('ascii'))
memfree = int(zk_conn.get('/nodes/{}/memfree'.format(node))[0].decode('ascii'))
memtotal = memused + memfree
allocfree = memtotal - memalloc
if allocfree > most_allocfree:
most_allocfree = allocfree
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node
# via load average
def findTargetHypervisorLoad(zk_conn, dom_uuid):
def findTargetNodeLoad(zk_conn, dom_uuid):
least_load = 9999
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
load = float(zk_conn.get('/nodes/{}/cpuload'.format(hypervisor))[0].decode('ascii'))
node_list = getNodes(zk_conn, dom_uuid)
for node in node_list:
load = float(zk_conn.get('/nodes/{}/cpuload'.format(node))[0].decode('ascii'))
if load < least_load:
least_load = load
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node
# via total vCPUs
def findTargetHypervisorVCPUs(zk_conn, dom_uuid):
def findTargetNodeVCPUs(zk_conn, dom_uuid):
least_vcpus = 9999
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
vcpus = int(zk_conn.get('/nodes/{}/vcpualloc'.format(hypervisor))[0].decode('ascii'))
node_list = getNodes(zk_conn, dom_uuid)
for node in node_list:
vcpus = int(zk_conn.get('/nodes/{}/vcpualloc'.format(node))[0].decode('ascii'))
if vcpus < least_vcpus:
least_vcpus = vcpus
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node
# via total VMs
def findTargetHypervisorVMs(zk_conn, dom_uuid):
def findTargetNodeVMs(zk_conn, dom_uuid):
least_vms = 9999
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
vms = int(zk_conn.get('/nodes/{}/domainscount'.format(hypervisor))[0].decode('ascii'))
node_list = getNodes(zk_conn, dom_uuid)
for node in node_list:
vms = int(zk_conn.get('/nodes/{}/domainscount'.format(node))[0].decode('ascii'))
if vms < least_vms:
least_vms = vms
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node

0
client-common/client_lib/network.py → client-common/network.py
View File

177
client-common/client_lib/node.py → client-common/node.py
View File

@ -35,30 +35,26 @@ import configparser
import kazoo.client
import client_lib.ansiiprint as ansiiprint
import client_lib.zkhandler as zkhandler
import client_lib.common as common
import client_lib.vm as pvc_vm
def getInformationFromNode(zk_conn, node_name, long_output):
node_daemon_state = zk_conn.get('/nodes/{}/daemonstate'.format(node_name))[0].decode('ascii')
node_domain_state = zk_conn.get('/nodes/{}/domainstate'.format(node_name))[0].decode('ascii')
node_cpu_count = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[0]
node_kernel = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[1]
node_os = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[2]
node_arch = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[3]
node_mem_used = zk_conn.get('/nodes/{}/memused'.format(node_name))[0].decode('ascii')
node_mem_free = zk_conn.get('/nodes/{}/memfree'.format(node_name))[0].decode('ascii')
node_mem_total = int(node_mem_used) + int(node_mem_free)
node_load = zk_conn.get('/nodes/{}/cpuload'.format(node_name))[0].decode('ascii')
node_domains_count = zk_conn.get('/nodes/{}/domainscount'.format(node_name))[0].decode('ascii')
node_running_domains = zk_conn.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
node_mem_allocated = 0
for domain in node_running_domains:
try:
parsed_xml = common.getDomainXML(zk_conn, domain)
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
node_mem_allocated += int(dmemory)
except AttributeError:
click.echo('Error: Domain {} does not exist.'.format(domain))
node_daemon_state = zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node_name))
node_router_state = zkhandler.readdata(zk_conn, '/nodes/{}/routerstate'.format(node_name))
node_domain_state = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(node_name))
node_static_data = zkhandler.readdata(zk_conn, '/nodes/{}/staticdata'.format(node_name)).split()
node_cpu_count = node_static_data[0]
node_kernel = node_static_data[1]
node_os = node_static_data[2]
node_arch = node_static_data[3]
node_mem_allocated = int(zkhandler.readdata(zk_conn, '/nodes/{}/memalloc'.format(node_name)))
node_mem_used = int(zkhandler.readdata(zk_conn, '/nodes/{}/memused'.format(node_name)))
node_mem_free = int(zkhandler.readdata(zk_conn, '/nodes/{}/memfree'.format(node_name)))
node_mem_total = node_mem_used + node_mem_free
node_load = zkhandler.readdata(zk_conn, '/nodes/{}/cpuload'.format(node_name))
node_domains_count = zkhandler.readdata(zk_conn, '/nodes/{}/domainscount'.format(node_name))
node_running_domains = zkhandler.readdata(zk_conn, '/nodes/{}/runningdomains'.format(node_name)).split()
if node_daemon_state == 'run':
daemon_state_colour = ansiiprint.green()
@ -71,6 +67,13 @@ def getInformationFromNode(zk_conn, node_name, long_output):
else:
daemon_state_colour = ansiiprint.blue()
if node_router_state == 'primary':
router_state_colour = ansiiprint.green()
elif node_router_state == 'secondary':
router_state_colour = ansiiprint.blue()
else:
router_state_colour = ansiiprint.purple()
if node_domain_state == 'ready':
domain_state_colour = ansiiprint.green()
else:
@ -83,6 +86,7 @@ def getInformationFromNode(zk_conn, node_name, long_output):
# Basic information
ainformation.append('{}Name:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_name))
ainformation.append('{}Daemon State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), daemon_state_colour, node_daemon_state, ansiiprint.end()))
ainformation.append('{}Router State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), router_state_colour, node_router_state, ansiiprint.end()))
ainformation.append('{}Domain State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), domain_state_colour, node_domain_state, ansiiprint.end()))
ainformation.append('{}Active VM Count:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), node_domains_count))
if long_output == True:
@ -105,6 +109,50 @@ def getInformationFromNode(zk_conn, node_name, long_output):
#
# Direct Functions
#
def secondary_node(zk_conn, node):
# Verify node is valid
if not common.verifyNode(zk_conn, node):
return False, 'ERROR: No node named "{}" is present in the cluster.'.format(node)
# Ensure node is a coordinator
daemon_mode = zkhandler.readdata(zk_conn, '/nodes/{}/daemonmode'.format(node))
if daemon_mode == 'hypervisor':
return False, 'ERROR: Cannot change router mode on non-coordinator node "{}"'.format(node)
# Get current state
current_state = zkhandler.readdata(zk_conn, '/nodes/{}/routerstate'.format(node))
if current_state == 'primary':
click.echo('Setting node {} in secondary router mode.'.format(node))
zkhandler.writedata(zk_conn, {
'/primary_node': 'none'
})
else:
click.echo('Node {} is already in secondary router mode.'.format(node))
return True, ''
def primary_node(zk_conn, node):
# Verify node is valid
if not common.verifyNode(zk_conn, node):
return False, 'ERROR: No node named "{}" is present in the cluster.'.format(node)
# Ensure node is a coordinator
daemon_mode = zkhandler.readdata(zk_conn, '/nodes/{}/daemonmode'.format(node))
if daemon_mode == 'hypervisor':
return False, 'ERROR: Cannot change router mode on non-coordinator node "{}"'.format(node)
# Get current state
current_state = zkhandler.readdata(zk_conn, '/nodes/{}/routerstate'.format(node))
if current_state == 'secondary':
click.echo('Setting node {} in primary router mode.'.format(node))
zkhandler.writedata(zk_conn, {
'/primary_node': node
})
else:
click.echo('Node {} is already in primary router mode.'.format(node))
return True, ''
def flush_node(zk_conn, node, wait):
# Verify node is valid
if not common.verifyNode(zk_conn, node):
@ -113,14 +161,14 @@ def flush_node(zk_conn, node, wait):
click.echo('Flushing hypervisor {} of running VMs.'.format(node))
# Add the new domain to Zookeeper
transaction = zk_conn.transaction()
transaction.set_data('/nodes/{}/domainstate'.format(node), 'flush'.encode('ascii'))
results = transaction.commit()
zkhandler.writedata(zk_conn, {
'/nodes/{}/domainstate'.format(node): 'flush'
})
if wait == True:
while True:
time.sleep(1)
node_state = zk_conn.get('/nodes/{}/domainstate'.format(node))[0].decode('ascii')
node_state = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(node))
if node_state == "flushed":
break
@ -134,9 +182,9 @@ def ready_node(zk_conn, node):
click.echo('Restoring hypervisor {} to active service.'.format(node))
# Add the new domain to Zookeeper
transaction = zk_conn.transaction()
transaction.set_data('/nodes/{}/domainstate'.format(node), 'unflush'.encode('ascii'))
results = transaction.commit()
zkhandler.writedata(zk_conn, {
'/nodes/{}/domainstate'.format(node): 'unflush'
})
return True, ''
@ -186,6 +234,7 @@ def get_list(zk_conn, limit):
node_list_output = []
node_daemon_state = {}
node_router_state = {}
node_domain_state = {}
node_cpu_count = {}
node_mem_used = {}
@ -198,55 +247,69 @@ def get_list(zk_conn, limit):
# Gather information for printing
for node_name in node_list:
node_daemon_state[node_name] = zk_conn.get('/nodes/{}/daemonstate'.format(node_name))[0].decode('ascii')
node_domain_state[node_name] = zk_conn.get('/nodes/{}/domainstate'.format(node_name))[0].decode('ascii')
node_cpu_count[node_name] = zk_conn.get('/nodes/{}/staticdata'.format(node_name))[0].decode('ascii').split()[0]
node_mem_used[node_name] = zk_conn.get('/nodes/{}/memused'.format(node_name))[0].decode('ascii')
node_mem_free[node_name] = zk_conn.get('/nodes/{}/memfree'.format(node_name))[0].decode('ascii')
node_mem_total[node_name] = int(node_mem_used[node_name]) + int(node_mem_free[node_name])
node_load[node_name] = zk_conn.get('/nodes/{}/cpuload'.format(node_name))[0].decode('ascii')
node_domains_count[node_name] = zk_conn.get('/nodes/{}/domainscount'.format(node_name))[0].decode('ascii')
node_running_domains[node_name] = zk_conn.get('/nodes/{}/runningdomains'.format(node_name))[0].decode('ascii').split()
node_mem_allocated[node_name] = 0
for domain in node_running_domains[node_name]:
try:
parsed_xml = common.getDomainXML(zk_conn, domain)
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
node_mem_allocated[node_name] += int(dmemory)
except AttributeError:
click.echo('Error: Domain {} does not exist.'.format(domain))
node_daemon_state[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node_name))
node_router_state[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/routerstate'.format(node_name))
node_domain_state[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(node_name))
node_cpu_count[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/staticdata'.format(node_name)).split()[0]
node_mem_allocated[node_name] = int(zkhandler.readdata(zk_conn, '/nodes/{}/memalloc'.format(node_name)))
node_mem_used[node_name] = int(zkhandler.readdata(zk_conn, '/nodes/{}/memused'.format(node_name)))
node_mem_free[node_name] = int(zkhandler.readdata(zk_conn, '/nodes/{}/memfree'.format(node_name)))
node_mem_total[node_name] = node_mem_used[node_name] + node_mem_free[node_name]
node_load[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/cpuload'.format(node_name))
node_domains_count[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/domainscount'.format(node_name))
node_running_domains[node_name] = zkhandler.readdata(zk_conn, '/nodes/{}/runningdomains'.format(node_name)).split()
# Determine optimal column widths
# Dynamic columns: node_name, hypervisor, migrated
node_name_length = 0
# Dynamic columns: node_name, daemon_state, network_state, domain_state, load
node_name_length = 5
daemon_state_length = 7
router_state_length = 7
domain_state_length = 7
for node_name in node_list:
# node_name column
_node_name_length = len(node_name) + 1
if _node_name_length > node_name_length:
node_name_length = _node_name_length
# daemon_state column
_daemon_state_length = len(node_daemon_state[node_name]) + 1
if _daemon_state_length > daemon_state_length:
daemon_state_length = _daemon_state_length
# router_state column
_router_state_length = len(node_router_state[node_name]) + 1
if _router_state_length > router_state_length:
router_state_length = _router_state_length
# domain_state column
_domain_state_length = len(node_domain_state[node_name]) + 1
if _domain_state_length > domain_state_length:
domain_state_length = _domain_state_length
# Format the string (header)
node_list_output.append(
'{bold}{node_name: <{node_name_length}} \
State: {daemon_state_colour}{node_daemon_state: <7}{end_colour} {domain_state_colour}{node_domain_state: <8}{end_colour} \
State: {daemon_state_colour}{node_daemon_state: <{daemon_state_length}}{end_colour} {router_state_colour}{node_router_state: <{router_state_length}}{end_colour} {domain_state_colour}{node_domain_state: <{domain_state_length}}{end_colour} \
Resources: {node_domains_count: <4} {node_cpu_count: <5} {node_load: <6} \
RAM (MiB): {node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_mem_allocated: <6}{end_bold}'.format(
node_name_length=node_name_length,
daemon_state_length=daemon_state_length,
router_state_length=router_state_length,
domain_state_length=domain_state_length,
bold=ansiiprint.bold(),
end_bold=ansiiprint.end(),
daemon_state_colour='',
router_state_colour='',
domain_state_colour='',
end_colour='',
node_name='Name',
node_daemon_state='Daemon',
node_domain_state='Domains',
node_router_state='Router',
node_domain_state='Domain',
node_domains_count='VMs',
node_cpu_count='CPUs',
node_load='Load',
node_mem_total='Total',
node_mem_used='Used',
node_mem_free='Free',
node_mem_allocated='VMs',
node_mem_allocated='VMs'
)
)
@ -263,7 +326,14 @@ RAM (MiB): {node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_me
else:
daemon_state_colour = ansiiprint.blue()
if node_mem_allocated[node_name] >= node_mem_total[node_name]:
if node_router_state[node_name] == 'primary':
router_state_colour = ansiiprint.green()
elif node_router_state[node_name] == 'secondary':
router_state_colour = ansiiprint.blue()
else:
router_state_colour = ansiiprint.purple()
if node_mem_allocated[node_name] != 0 and node_mem_allocated[node_name] >= node_mem_total[node_name]:
node_domain_state[node_name] = 'overprov'
domain_state_colour = ansiiprint.yellow()
elif node_domain_state[node_name] == 'ready':
@ -273,17 +343,22 @@ RAM (MiB): {node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_me
node_list_output.append(
'{bold}{node_name: <{node_name_length}} \
{daemon_state_colour}{node_daemon_state: <7}{end_colour} {domain_state_colour}{node_domain_state: <8}{end_colour} \
{daemon_state_colour}{node_daemon_state: <{daemon_state_length}}{end_colour} {router_state_colour}{node_router_state: <{router_state_length}}{end_colour} {domain_state_colour}{node_domain_state: <{domain_state_length}}{end_colour} \
{node_domains_count: <4} {node_cpu_count: <5} {node_load: <6} \
{node_mem_total: <6} {node_mem_used: <6} {node_mem_free: <6} {node_mem_allocated: <6}{end_bold}'.format(
node_name_length=node_name_length,
daemon_state_length=daemon_state_length,
router_state_length=router_state_length,
domain_state_length=domain_state_length,
bold='',
end_bold='',
daemon_state_colour=daemon_state_colour,
router_state_colour=router_state_colour,
domain_state_colour=domain_state_colour,
end_colour=ansiiprint.end(),
node_name=node_name,
node_daemon_state=node_daemon_state[node_name],
node_router_state=node_router_state[node_name],
node_domain_state=node_domain_state[node_name],
node_domains_count=node_domains_count[node_name],
node_cpu_count=node_cpu_count[node_name],

189
client-common/client_lib/vm.py → client-common/vm.py
View File

@ -44,25 +44,22 @@ def getInformationFromXML(zk_conn, uuid, long_output):
# Obtain the contents of the XML from Zookeeper
try:
dstate = zk_conn.get('/domains/{}/state'.format(uuid))[0].decode('ascii')
dhypervisor = zk_conn.get('/domains/{}/hypervisor'.format(uuid))[0].decode('ascii')
dlasthypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(uuid))[0].decode('ascii')
dnode = zk_conn.get('/domains/{}/node'.format(uuid))[0].decode('ascii')
dlastnode = zk_conn.get('/domains/{}/lastnode'.format(uuid))[0].decode('ascii')
except:
return None
if dlasthypervisor == '':
dlasthypervisor = 'N/A'
if dlastnode == '':
dlastnode = 'N/A'
try:
parsed_xml = common.getDomainXML(zk_conn, uuid)
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
except AttributeError:
click.echo('Error: Domain {} does not exist.'.format(domain))
parsed_xml = common.getDomainXML(zk_conn, uuid)
duuid, dname, ddescription, dmemory, dvcpu, dvcputopo = common.getDomainMainDetails(parsed_xml)
dnets = common.getDomainNetworks(parsed_xml)
if long_output == True:
dtype, darch, dmachine, dconsole, demulator = common.getDomainExtraDetails(parsed_xml)
dfeatures = common.getDomainCPUFeatures(parsed_xml)
ddisks = common.getDomainDisks(parsed_xml)
dnets = common.getDomainNetworks(parsed_xml)
dcontrollers = common.getDomainControllers(parsed_xml)
# Format a nice output; do this line-by-line then concat the elements at the end
@ -98,8 +95,17 @@ def getInformationFromXML(zk_conn, uuid, long_output):
'unmigrate': ansiiprint.blue()
}
ainformation.append('{}State:{} {}{}{}'.format(ansiiprint.purple(), ansiiprint.end(), dstate_colour[dstate], dstate, ansiiprint.end()))
ainformation.append('{}Active Hypervisor:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dhypervisor))
ainformation.append('{}Last Hypervisor:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dlasthypervisor))
ainformation.append('{}Current Node:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dnode))
ainformation.append('{}Previous Node:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), dlastnode))
# Network list
net_list = []
for net in dnets:
# Split out just the numerical (VNI) part of the brXXXX name
net_vni = re.findall(r'\d+', net['source'])[0]
net_list.append(net_vni)
ainformation.append('')
ainformation.append('{}Networks:{} {}'.format(ansiiprint.purple(), ansiiprint.end(), ', '.join(net_list)))
if long_output == True:
# Disk list
@ -112,7 +118,6 @@ def getInformationFromXML(zk_conn, uuid, long_output):
ainformation.append('{0}Disks:{1} {2}ID Type {3: <{width}} Dev Bus{4}'.format(ansiiprint.purple(), ansiiprint.end(), ansiiprint.bold(), 'Name', ansiiprint.end(), width=name_length))
for disk in ddisks:
ainformation.append(' {0: <3} {1: <5} {2: <{width}} {3: <4} {4: <5}'.format(ddisks.index(disk), disk['type'], disk['name'], disk['dev'], disk['bus'], width=name_length))
# Network list
ainformation.append('')
ainformation.append('{}Interfaces:{} {}ID Type Source Model MAC{}'.format(ansiiprint.purple(), ansiiprint.end(), ansiiprint.bold(), ansiiprint.end()))
for net in dnets:
@ -193,25 +198,25 @@ def getDomainName(zk_conn, domain):
#
# Direct functions
#
def define_vm(zk_conn, config_data, target_hypervisor, selector):
def define_vm(zk_conn, config_data, target_node, selector):
# Parse the XML data
parsed_xml = lxml.objectify.fromstring(config_data)
dom_uuid = parsed_xml.uuid.text
dom_name = parsed_xml.name.text
click.echo('Adding new VM with Name "{}" and UUID "{}" to database.'.format(dom_name, dom_uuid))
if target_hypervisor == None:
target_hypervisor = common.findTargetHypervisor(zk_conn, selector, dom_uuid)
if target_node == None:
target_node = common.findTargetNode(zk_conn, selector, dom_uuid)
# Verify node is valid
common.verifyNode(zk_conn, target_hypervisor)
common.verifyNode(zk_conn, target_node)
# Add the new domain to Zookeeper
transaction = zk_conn.transaction()
transaction.create('/domains/{}'.format(dom_uuid), dom_name.encode('ascii'))
transaction.create('/domains/{}/state'.format(dom_uuid), 'stop'.encode('ascii'))
transaction.create('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
transaction.create('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
transaction.create('/domains/{}/node'.format(dom_uuid), target_node.encode('ascii'))
transaction.create('/domains/{}/lastnode'.format(dom_uuid), ''.encode('ascii'))
transaction.create('/domains/{}/failedreason'.format(dom_uuid), ''.encode('ascii'))
transaction.create('/domains/{}/xml'.format(dom_uuid), config_data.encode('ascii'))
results = transaction.commit()
@ -251,7 +256,7 @@ def undefine_vm(zk_conn, domain):
transaction.set_data('/domains/{}/state'.format(dom_uuid), 'stop'.encode('ascii'))
transaction.commit()
# Wait for 3 seconds to allow state to flow to all hypervisors
# Wait for 3 seconds to allow state to flow to all nodes
click.echo('Waiting for cluster to update.')
time.sleep(1)
except:
@ -343,43 +348,43 @@ def stop_vm(zk_conn, domain):
return True, ''
def move_vm(zk_conn, domain, target_hypervisor, selector):
def move_vm(zk_conn, domain, target_node, selector):
# Validate and obtain alternate passed value
dom_uuid = getDomainUUID(zk_conn, domain)
if dom_uuid == None:
common.stopZKConnection(zk_conn)
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
current_hypervisor = zk_conn.get('/domains/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
current_node = zk_conn.get('/domains/{}/node'.format(dom_uuid))[0].decode('ascii')
if target_hypervisor == None:
target_hypervisor = common.findTargetHypervisor(zk_conn, selector, dom_uuid)
if target_node == None:
target_node = common.findTargetNode(zk_conn, selector, dom_uuid)
else:
if target_hypervisor == current_hypervisor:
if target_node == current_node:
common.stopZKConnection(zk_conn)
return False, 'ERROR: VM "{}" is already running on hypervisor "{}".'.format(dom_uuid, current_hypervisor)
return False, 'ERROR: VM "{}" is already running on node "{}".'.format(dom_uuid, current_node)
# Verify node is valid
common.verifyNode(zk_conn, target_hypervisor)
common.verifyNode(zk_conn, target_node)
current_vm_state = zk_conn.get('/domains/{}/state'.format(dom_uuid))[0].decode('ascii')
if current_vm_state == 'start':
click.echo('Permanently migrating VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
click.echo('Permanently migrating VM "{}" to node "{}".'.format(dom_uuid, target_node))
transaction = zk_conn.transaction()
transaction.set_data('/domains/{}/state'.format(dom_uuid), 'migrate'.encode('ascii'))
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
transaction.set_data('/domains/{}/node'.format(dom_uuid), target_node.encode('ascii'))
transaction.set_data('/domains/{}/lastnode'.format(dom_uuid), ''.encode('ascii'))
transaction.commit()
else:
click.echo('Permanently moving VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
click.echo('Permanently moving VM "{}" to node "{}".'.format(dom_uuid, target_node))
transaction = zk_conn.transaction()
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
transaction.set_data('/domains/{}/node'.format(dom_uuid), target_node.encode('ascii'))
transaction.set_data('/domains/{}/lastnode'.format(dom_uuid), ''.encode('ascii'))
transaction.commit()
return True, ''
def migrate_vm(zk_conn, domain, target_hypervisor, selector, force_migrate):
def migrate_vm(zk_conn, domain, target_node, selector, force_migrate):
# Validate and obtain alternate passed value
dom_uuid = getDomainUUID(zk_conn, domain)
if dom_uuid == None:
@ -393,32 +398,32 @@ def migrate_vm(zk_conn, domain, target_hypervisor, selector, force_migrate):
else:
target_state = 'migrate'
current_hypervisor = zk_conn.get('/domains/{}/hypervisor'.format(dom_uuid))[0].decode('ascii')
last_hypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(dom_uuid))[0].decode('ascii')
current_node = zk_conn.get('/domains/{}/node'.format(dom_uuid))[0].decode('ascii')
last_node = zk_conn.get('/domains/{}/lastnode'.format(dom_uuid))[0].decode('ascii')
if last_hypervisor != '' and force_migrate != True:
if last_node != '' and force_migrate != True:
click.echo('ERROR: VM "{}" has been previously migrated.'.format(dom_uuid))
click.echo('> Last hypervisor: {}'.format(last_hypervisor))
click.echo('> Current hypervisor: {}'.format(current_hypervisor))
click.echo('Run `vm unmigrate` to restore the VM to its previous hypervisor, or use `--force` to override this check.')
click.echo('> Last node: {}'.format(last_node))
click.echo('> Current node: {}'.format(current_node))
click.echo('Run `vm unmigrate` to restore the VM to its previous node, or use `--force` to override this check.')
common.stopZKConnection(zk_conn)
return False, ''
if target_hypervisor == None:
target_hypervisor = findTargetHypervisor(zk_conn, selector, dom_uuid)
if target_node == None:
target_node = findTargetNode(zk_conn, selector, dom_uuid)
else:
if target_hypervisor == current_hypervisor:
if target_node == current_node:
common.stopZKConnection(zk_conn)
return False, 'ERROR: VM "{}" is already running on hypervisor "{}".'.format(dom_uuid, current_hypervisor)
return False, 'ERROR: VM "{}" is already running on node "{}".'.format(dom_uuid, current_node)
# Verify node is valid
common.verifyNode(zk_conn, target_hypervisor)
common.verifyNode(zk_conn, target_node)
click.echo('Migrating VM "{}" to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
click.echo('Migrating VM "{}" to node "{}".'.format(dom_uuid, target_node))
transaction = zk_conn.transaction()
transaction.set_data('/domains/{}/state'.format(dom_uuid), target_state.encode('ascii'))
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), current_hypervisor.encode('ascii'))
transaction.set_data('/domains/{}/node'.format(dom_uuid), target_node.encode('ascii'))
transaction.set_data('/domains/{}/lastnode'.format(dom_uuid), current_node.encode('ascii'))
transaction.commit()
return True, ''
@ -437,17 +442,17 @@ def unmigrate_vm(zk_conn, domain):
else:
target_state = 'migrate'
target_hypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(dom_uuid))[0].decode('ascii')
target_node = zk_conn.get('/domains/{}/lastnode'.format(dom_uuid))[0].decode('ascii')
if target_hypervisor == '':
if target_node == '':
common.stopZKConnection(zk_conn)
return False, 'ERROR: VM "{}" has not been previously migrated.'.format(dom_uuid)
click.echo('Unmigrating VM "{}" back to hypervisor "{}".'.format(dom_uuid, target_hypervisor))
click.echo('Unmigrating VM "{}" back to node "{}".'.format(dom_uuid, target_node))
transaction = zk_conn.transaction()
transaction.set_data('/domains/{}/state'.format(dom_uuid), target_state.encode('ascii'))
transaction.set_data('/domains/{}/hypervisor'.format(dom_uuid), target_hypervisor.encode('ascii'))
transaction.set_data('/domains/{}/lasthypervisor'.format(dom_uuid), ''.encode('ascii'))
transaction.set_data('/domains/{}/node'.format(dom_uuid), target_node.encode('ascii'))
transaction.set_data('/domains/{}/lastnode'.format(dom_uuid), ''.encode('ascii'))
transaction.commit()
return True, ''
@ -473,16 +478,16 @@ def get_info(zk_conn, domain, long_output):
return True, ''
def get_list(zk_conn, hypervisor, limit):
if hypervisor != None:
def get_list(zk_conn, node, limit):
if node != None:
# Verify node is valid
common.verifyNode(zk_conn, hypervisor)
common.verifyNode(zk_conn, node)
full_vm_list = zk_conn.get_children('/domains')
vm_list = []
vm_list_output = []
vm_hypervisor = {}
vm_node = {}
vm_state = {}
vm_migrated = {}
vm_uuid = {}
@ -490,13 +495,14 @@ def get_list(zk_conn, hypervisor, limit):
vm_description = {}
vm_memory = {}
vm_vcpu = {}
vm_nets = {}
# If we're limited, remove other nodes' VMs
for vm in full_vm_list:
# Check we don't match the limit
name = zkhandler.readdata(zk_conn, '/domains/{}'.format(vm))
vm_hypervisor[vm] = zkhandler.readdata(zk_conn, '/domains/{}/hypervisor'.format(vm))
vm_node[vm] = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(vm))
if limit != None:
try:
# Implcitly assume fuzzy limits
@ -506,72 +512,85 @@ def get_list(zk_conn, hypervisor, limit):
limit = limit + '.*'
if re.match(limit, vm) != None:
if hypervisor == None:
if node == None:
vm_list.append(vm)
else:
if vm_hypervisor[vm] == hypervisor:
if vm_node[vm] == node:
vm_list.append(vm)
if re.match(limit, name) != None:
if hypervisor == None:
if node == None:
vm_list.append(vm)
else:
if vm_hypervisor[vm] == hypervisor:
if vm_node[vm] == node:
vm_list.append(vm)
except Exception as e:
return False, 'Regex Error: {}'.format(e)
else:
# Check hypervisor to avoid unneeded ZK calls
if hypervisor == None:
# Check node to avoid unneeded ZK calls
if node == None:
vm_list.append(vm)
else:
if vm_hypervisor[vm] == hypervisor:
if vm_node[vm] == node:
vm_list.append(vm)
# Gather information for printing
for vm in vm_list:
vm_state[vm] = zk_conn.get('/domains/{}/state'.format(vm))[0].decode('ascii')
vm_lasthypervisor = zk_conn.get('/domains/{}/lasthypervisor'.format(vm))[0].decode('ascii')
if vm_lasthypervisor != '':
vm_migrated[vm] = 'from {}'.format(vm_lasthypervisor)
vm_lastnode = zk_conn.get('/domains/{}/lastnode'.format(vm))[0].decode('ascii')
if vm_lastnode != '':
vm_migrated[vm] = 'from {}'.format(vm_lastnode)
else:
vm_migrated[vm] = 'no'
try:
vm_xml = common.getDomainXML(zk_conn, vm)
vm_uuid[vm], vm_name[vm], vm_description[vm], vm_memory[vm], vm_vcpu[vm], vm_vcputopo = common.getDomainMainDetails(vm_xml)
dnets = common.getDomainNetworks(vm_xml)
net_list = []
for net in dnets:
# Split out just the numerical (VNI) part of the brXXXX name
net_vni = re.findall(r'\d+', net['source'])[0]
net_list.append(net_vni)
vm_nets[vm] = ','.join(net_list)
except AttributeError:
click.echo('Error: Domain {} does not exist.'.format(domain))
# Determine optimal column widths
# Dynamic columns: node_name, hypervisor, migrated
vm_name_length = 0
vm_hypervisor_length = 0
vm_migrated_length = 0
# Dynamic columns: node_name, node, migrated
vm_name_length = 10
vm_node_length = 8
vm_nets_length = 9
vm_migrated_length = 10
for vm in vm_list:
# vm_name column
_vm_name_length = len(vm_name[vm]) + 1
if _vm_name_length > vm_name_length:
vm_name_length = _vm_name_length
# vm_hypervisor column
_vm_hypervisor_length = len(vm_hypervisor[vm]) + 1
if _vm_hypervisor_length > vm_hypervisor_length:
vm_hypervisor_length = _vm_hypervisor_length
# vm_node column
_vm_node_length = len(vm_node[vm]) + 1
if _vm_node_length > vm_node_length:
vm_node_length = _vm_node_length
# vm_nets column
_vm_nets_length = len(vm_nets[vm]) + 1
if _vm_nets_length > vm_nets_length:
vm_nets_length = _vm_nets_length
# vm_migrated column
_vm_migrated_length = len(vm_migrated[vm]) + 1
if _vm_migrated_length > vm_migrated_length:
vm_migrated_length = _vm_migrated_length
# Format the string (header)
vm_list_header = ansiiprint.bold() + 'Name UUID State RAM [MiB] vCPUs Hypervisor Migrated?' + ansiiprint.end()
vm_list_output.append(
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <37} \
{vm_state_colour}{vm_state: <8}{end_colour} \
{vm_networks: <{vm_nets_length}} \
{vm_memory: <10} {vm_vcpu: <6} \
{vm_hypervisor: <{vm_hypervisor_length}} \
{vm_node: <{vm_node_length}} \
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
vm_name_length=vm_name_length,
vm_hypervisor_length=vm_hypervisor_length,
vm_node_length=vm_node_length,
vm_nets_length=vm_nets_length,
vm_migrated_length=vm_migrated_length,
bold=ansiiprint.bold(),
end_bold=ansiiprint.end(),
@ -580,9 +599,10 @@ def get_list(zk_conn, hypervisor, limit):
vm_name='Name',
vm_uuid='UUID',
vm_state='State',
vm_networks='Networks',
vm_memory='RAM (MiB)',
vm_vcpu='vCPUs',
vm_hypervisor='Hypervisor',
vm_node='Node',
vm_migrated='Migrated'
)
)
@ -605,11 +625,13 @@ def get_list(zk_conn, hypervisor, limit):
vm_list_output.append(
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <37} \
{vm_state_colour}{vm_state: <8}{end_colour} \
{vm_networks: <{vm_nets_length}} \
{vm_memory: <10} {vm_vcpu: <6} \
{vm_hypervisor: <{vm_hypervisor_length}} \
{vm_node: <{vm_node_length}} \
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
vm_name_length=vm_name_length,
vm_hypervisor_length=vm_hypervisor_length,
vm_node_length=vm_node_length,
vm_nets_length=vm_nets_length,
vm_migrated_length=vm_migrated_length,
bold='',
end_bold='',
@ -618,9 +640,10 @@ def get_list(zk_conn, hypervisor, limit):
vm_name=vm_name[vm],
vm_uuid=vm_uuid[vm],
vm_state=vm_state[vm],
vm_networks=vm_nets[vm],
vm_memory=vm_memory[vm],
vm_vcpu=vm_vcpu[vm],
vm_hypervisor=vm_hypervisor[vm],
vm_node=vm_node[vm],
vm_migrated=vm_migrated[vm]
)
)

0
client-common/client_lib/zkhandler.py → client-common/zkhandler.py
View File

7
debian/changelog vendored
View File

@ -1,3 +1,10 @@
pvc (0.4-0) unstable; urgency=medium
* Unification of all daemons into node daemon
* Numerous client tweaks
-- Joshua Boniface <joshua@boniface.me> Sat, 13 Oct 2018 10:40:14 -0400
pvc (0.3-1) unstable; urgency=medium
* Code and package reorganization pending additional daemons

36
debian/control vendored
View File

@ -6,40 +6,14 @@ Standards-Version: 3.9.8
Homepage: https://www.boniface.me
X-Python3-Version: >= 3.2
Package: pvc-daemon-common
Package: pvc-daemon
Architecture: all
Depends: python3-kazoo, python3-psutil, python3-apscheduler
Suggests: pvc-virtualization-daemon, pvc-cli-client
Description: Parallel Virtual Cluster common daemon libraries (Python 3)
The Parallel Virtual Cluster provides a management solution for QEMU/KVM virtual clusters.
.
This package installs the common daemon libraries
Package: pvc-virtualization-daemon
Architecture: all
Depends: pvc-daemon-common, python3-libvirt, ipmitool, libvirt-daemon-system
Suggests: pvc-cli-client
Depends: python3-kazoo, python3-psutil, python3-apscheduler, python3-libvirt, ipmitool, libvirt-daemon-system, arping, bridge-utils, dnsmasq
Suggests: pvc-client-cli
Description: Parallel Virtual Cluster virtualization daemon (Python 3)
The Parallel Virtual Cluster provides a management solution for QEMU/KVM virtual clusters.
.
This package installs the PVC virtualization daemon
Package: pvc-network-daemon
Architecture: all
Depends: pvc-daemon-common, python3-libvirt, ipmitool, libvirt-daemon-system
Suggests: pvc-cli-client, pvc-virtualization-daemon
Description: Parallel Virtual Cluster network daemon (Python 3)
The Parallel Virtual Cluster provides a management solution for QEMU/KVM virtual clusters.
.
This package installs the PVC network daemon
Package: pvc-router-daemon
Architecture: all
Depends: pvc-daemon-common, arping
Description: Parallel Virtual Cluster router daemon (Python 3)
The Parallel Virtual Cluster provides a management solution for QEMU/KVM virtual clusters.
.
This package installs the PVC router daemon
This package installs the PVC node daemon
Package: pvc-client-common
Architecture: all
@ -49,7 +23,7 @@ Description: Parallel Virtual Cluster common client libraries (Python 3)
.
This package installs the common client libraries
Package: pvc-cli-client
Package: pvc-client-cli
Architecture: all
Depends: pvc-client-common
Description: Parallel Virtual Cluster client (Python 3)

1
debian/pvc-cli-client.install vendored
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@ -1 +0,0 @@
cli-client/pvc.py usr/share/pvc

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debian/pvc-client-cli.install vendored Normal file
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client-cli/pvc.py usr/share/pvc

0
debian/pvc-cli-client.postinst → debian/pvc-client-cli.postinst vendored
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0
debian/pvc-cli-client.prerm → debian/pvc-client-cli.prerm vendored
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2
debian/pvc-client-common.install vendored
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@ -1 +1 @@
client-common/client_lib usr/share/pvc
client-common/* usr/share/pvc/client_lib

4
debian/pvc-daemon.install vendored Normal file
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node-daemon/pvcd.py usr/share/pvc
node-daemon/pvcd.service lib/systemd/system
node-daemon/pvcd.conf.sample etc/pvc
node-daemon/pvcd usr/share/pvc

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debian/pvc-daemon.postinst vendored Normal file
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@ -0,0 +1,10 @@
#!/bin/sh
# Enable the service
systemctl enable /lib/systemd/system/pvcd.service
if systemctl is-active --quiet pvcd.service; then
echo "The PVC node daemon has not been restarted; this is up to the administrator."
else
echo "The PVC node daemon has not been started; create a config file at /etc/pvc/pvcd.conf then start it."
fi

3
debian/pvc-virtualization-daemon.prerm → debian/pvc-daemon.prerm vendored
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@ -1,5 +1,4 @@
#!/bin/sh
# Disable the service
systemctl disable pvcvd.service
systemctl disable pvcd.service

4
debian/pvc-network-daemon.install vendored
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@ -1,4 +0,0 @@
network-daemon/pvcnd.py usr/share/pvc
network-daemon/pvcnd.service lib/systemd/system
network-daemon/pvcnd.conf.sample etc/pvc
network-daemon/pvcnd usr/share/pvc

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debian/pvc-network-daemon.postinst vendored
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@ -1,6 +0,0 @@
#!/bin/sh
# Enable the servive
systemctl enable /lib/systemd/system/pvcnd.service
echo "The PVC network daemon has not been started. Create a config file at /etc/pvc/pvcnd.conf then start it."

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debian/pvc-network-daemon.prerm vendored
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@ -1,5 +0,0 @@
#!/bin/sh
# Disable the service
systemctl disable pvcnd.service

4
debian/pvc-router-daemon.install vendored
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@ -1,4 +0,0 @@
router-daemon/pvcrd.py usr/share/pvc
router-daemon/pvcrd.service lib/systemd/system
router-daemon/pvcrd.conf.sample etc/pvc
router-daemon/pvcrd usr/share/pvc

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debian/pvc-router-daemon.postinst vendored
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@ -1,6 +0,0 @@
#!/bin/sh
# Enable the servive
systemctl enable /lib/systemd/system/pvcrd.service
echo "The PVC router daemon has not been started. Create a config file at /etc/pvc/pvcrd.conf then start it."

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debian/pvc-router-daemon.prerm vendored
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@ -1,5 +0,0 @@
#!/bin/sh
# Disable the service
systemctl disable pvcrd.service

4
debian/pvc-virtualization-daemon.install vendored
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@ -1,4 +0,0 @@
virtualization-daemon/pvcvd.py usr/share/pvc
virtualization-daemon/pvcvd.service lib/systemd/system
virtualization-daemon/pvcvd.conf.sample etc/pvc
virtualization-daemon/pvcvd usr/share/pvc

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debian/pvc-virtualization-daemon.postinst vendored
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@ -1,6 +0,0 @@
#!/bin/sh
# Enable the servive
systemctl enable /lib/systemd/system/pvcvd.service
echo "The PVC virtualization daemon has not been started. Create a config file at /etc/pvc/pvcvd.conf then start it."

22
network-daemon/pvcnd.conf.sample
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@ -1,22 +0,0 @@
# pvcnd cluster configuration file example
#
# This configuration file specifies details for this node in PVC. Multiple host
# blocks can be added but only the one matching the current system hostname will
# be used by the local daemon. Default values apply to all hosts for any value
# not specifically overridden.
#
# The following values are required for each host or in a default section:
# zookeeper: the IP+port of the Zookeper instance (defaults to 127.0.0.1:2181)
# vni_dev: the lower-level network device to bind VNI to
# vni_dev_ip: the IP address (CIDR) of the lower-level network device, used
# by FRR to communicate with the route reflectors and pass routes
# for VNI interfaces
#
# Copy this example to /etc/pvc/pvcnd.conf and edit to your needs
[default]
zookeeper = 127.0.0.1:2181
[myhost]
vni_dev = ens4
vni_dev_ip = 10.255.0.3/24

23
network-daemon/pvcnd.py
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@ -1,23 +0,0 @@
#!/usr/bin/env python3
# pvcnd.py - Network daemon startup stub
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import pvcnd.Daemon

16
network-daemon/pvcnd.service
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@ -1,16 +0,0 @@
# Parallel Virtual Cluster network daemon unit file
[Unit]
Description = Parallel Virtual Cluster network daemon
After = network-online.target libvirtd.service zookeeper.service
[Service]
Type = simple
WorkingDirectory = /usr/share/pvc
Environment = PYTHONUNBUFFERED=true
Environment = PVCND_CONFIG_FILE=/etc/pvc/pvcnd.conf
ExecStart = /usr/share/pvc/pvcnd.py
KillSignal = SIGINT
Restart = on-failure
[Install]
WantedBy = multi-user.target

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network-daemon/pvcnd/Daemon.py
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@ -1,223 +0,0 @@
#!/usr/bin/env python3
# Daemon.py - PVC hypervisor network daemon
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import kazoo.client
import sys
import os
import signal
import socket
import psutil
import configparser
import time
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import pvcnd.VXNetworkInstance as VXNetworkInstance
print(ansiiprint.bold() + "pvcnd - Parallel Virtual Cluster network daemon" + ansiiprint.end())
# Get the config file variable from the environment
try:
pvcnd_config_file = os.environ['PVCND_CONFIG_FILE']
except:
print('ERROR: The "PVCND_CONFIG_FILE" environment variable must be set before starting pvcnd.')
exit(1)
myhostname = socket.gethostname()
myshorthostname = myhostname.split('.', 1)[0]
mydomainname = ''.join(myhostname.split('.', 1)[1:])
# Config values dictionary
config_values = [
'zookeeper',
'vni_dev',
'vni_dev_ip',
]
def readConfig(pvcnd_config_file, myhostname):
print('Loading configuration from file {}'.format(pvcnd_config_file))
o_config = configparser.ConfigParser()
o_config.read(pvcnd_config_file)
config = {}
try:
entries = o_config[myhostname]
except:
try:
entries = o_config['default']
except:
print('ERROR: Config file is not valid!')
exit(1)
for entry in config_values:
try:
config[entry] = entries[entry]
except:
try:
config[entry] = o_config['default'][entry]
except:
print('ERROR: Config file missing required value "{}" for this host!'.format(entry))
exit(1)
return config
config = readConfig(pvcnd_config_file, myhostname)
zk_conn = kazoo.client.KazooClient(hosts=config['zookeeper'])
try:
print('Connecting to Zookeeper instance at {}'.format(config['zookeeper']))
zk_conn.start()
except:
print('ERROR: Failed to connect to Zookeeper!')
exit(1)
# Handle zookeeper failures gracefully
def zk_listener(state):
global zk_conn
if state == kazoo.client.KazooState.SUSPENDED:
ansiiprint.echo('Connection to Zookeeper list; retrying', '', 'e')
while True:
_zk_conn = kazoo.client.KazooClient(hosts=config['zookeeper'])
try:
_zk_conn.start()
zk_conn = _zk_conn
break
except:
time.sleep(1)
elif state == kazoo.client.KazooState.CONNECTED:
ansiiprint.echo('Connection to Zookeeper started', '', 'o')
else:
pass
zk_conn.add_listener(zk_listener)
# Cleanup function
def cleanup(signum, frame):
ansiiprint.echo('Terminating daemon', '', 'e')
# Close the Zookeeper connection
try:
zk_conn.stop()
zk_conn.close()
except:
pass
# Exit
exit(0)
# Handle signals with cleanup
signal.signal(signal.SIGTERM, cleanup)
signal.signal(signal.SIGINT, cleanup)
signal.signal(signal.SIGQUIT, cleanup)
# What this daemon does:
# 1. Configure public networks dynamically on startup (e.g. bonding, vlans, etc.) from config
# * no /etc/network/interfaces config for these - just mgmt interface via DHCP!
# 2. Watch ZK /networks
# 3. Provision required network interfaces when a network is added
# a. create vxlan interface targeting local dev from config
# b. create bridge interface
# c. add vxlan to bridge
# d. set interfaces up
# 4. Remove network interfaces when network disapears
# Zookeeper schema:
# networks/
# <VXLANID>/
# ipnet <NETWORK-CIDR> e.g. 10.101.0.0/24
# gateway <IPADDR> e.g. 10.101.0.1 [1]
# routers <IPADDR-LIST> e.g. 10.101.0.2,10.101.0.3 [2]
# dhcp <YES/NO> e.g. YES [3]
# reservations/
# <HOSTNAME/DESCRIPTION>/
# address <IPADDR> e.g. 10.101.0.30
# mac <MACADDR> e.g. ff:ff:fe:ab:cd:ef
# fwrules/
# <RULENAME>/
# description <DESCRIPTION> e.g. Allow HTTP from any to this net
# src <HOSTNAME/IPADDR/SUBNET/"any"/"this"> e.g. any
# dest <HOSTNAME/IPADDR/SUBNET/"any"/"this"> e.g. this
# port <PORT/RANGE/"any"> e.g. 80
# Notes:
# [1] becomes a VIP between the pair of routers in multi-router envs
# [2] becomes real addrs on the pair of routers in multi-router envs
# [2] should match gateway in single-router envs for consistency
# [3] enables or disables a DHCP subnet definition for the network
# Prepare underlying interface
if config['vni_dev_ip'] == 'dhcp':
vni_dev = config['vni_dev']
ansiiprint.echo('Configuring VNI parent device {} with DHCP IP'.format(vni_dev), '', 'o')
os.system(
'ip link set {0} up'.format(
vni_dev
)
)
os.system(
'dhclient {0}'.format(
vni_dev
)
)
else:
vni_dev = config['vni_dev']
vni_dev_ip = config['vni_dev_ip']
ansiiprint.echo('Configuring VNI parent device {} with IP {}'.format(vni_dev, vni_dev_ip), '', 'o')
os.system(
'ip link set {0} up'.format(
vni_dev
)
)
os.system(
'ip address add {0} dev {1}'.format(
vni_dev_ip,
vni_dev
)
)
# Prepare VNI list
t_vni = dict()
vni_list = []
@zk_conn.ChildrenWatch('/networks')
def updatenetworks(new_vni_list):
global vni_list
print(ansiiprint.blue() + 'Network list: ' + ansiiprint.end() + '{}'.format(' '.join(new_vni_list)))
# Add new VNIs
for vni in new_vni_list:
if vni not in vni_list:
vni_list.append(vni)
t_vni[vni] = VXNetworkInstance.VXNetworkInstance(vni, zk_conn, config)
t_vni[vni].createNetwork()
# Remove deleted VNIs
for vni in vni_list:
if vni not in new_vni_list:
vni_list.remove(vni)
t_vni[vni].removeNetwork()
# Tick loop
while True:
try:
time.sleep(0.1)
except:
break

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network-daemon/pvcnd/VXNetworkInstance.py
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@ -1,91 +0,0 @@
#!/usr/bin/env python3
# VXNetworkInstance.py - Class implementing a PVC VM network and run by pvcnd
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import os
import sys
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
class VXNetworkInstance():
# Initialization function
def __init__ (self, vni, zk_conn, config):
self.vni = vni
self.zk_conn = zk_conn
self.vni_dev = config['vni_dev']
def createNetwork(self):
ansiiprint.echo('Creating VNI {} device on interface {}'.format(self.vni, self.vni_dev), '', 'o')
os.system(
'sudo ip link add vxlan{0} type vxlan id {0} dstport 4789 dev {1} nolearning'.format(
self.vni,
self.vni_dev
)
)
os.system(
'sudo brctl addbr br{0}'.format(
self.vni
)
)
os.system(
'sudo brctl addif br{0} vxlan{0}'.format(
self.vni
)
)
os.system(
'sudo ip link set vxlan{0} up'.format(
self.vni
)
)
os.system(
'sudo ip link set br{0} up'.format(
self.vni
)
)
def removeNetwork(self):
ansiiprint.echo('Removing VNI {} device on interface {}'.format(self.vni, self.vni_dev), '', 'o')
os.system(
'sudo ip link set br{0} down'.format(
self.vni
)
)
os.system(
'sudo ip link set vxlan{0} down'.format(
self.vni
)
)
os.system(
'sudo brctl delif br{0} vxlan{0}'.format(
self.vni
)
)
os.system(
'sudo brctl delbr br{0}'.format(
self.vni
)
)
os.system(
'sudo ip link delete vxlan{0}'.format(
self.vni
)
)

66
node-daemon/pvcd.conf.sample Normal file
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# pvcd cluster configuration file example
#
# This configuration file specifies details for this node in PVC. Multiple node
# blocks can be added but only the one matching the current system nodename will
# be used by the local daemon. Default values are not supported; the values in
# this sample configuration are considered defaults and, with adjustment of the
# nodename section and coordinators list, can be used as-is on a Debian system.
#
# The following values are required for each node or in a default section:
# coordinators: A CSV list of the short hostnames of the coordinator nodes; these nodes become
# members of the Zookeeper cluster, can act as routers, and perform additional
# special functions in a cluster; ideally there are 3 coordinators, though 5
# coordinators are supported
# dynamic_directory: The ramdisk directory for PVC to store its dynamic configurations,
# usually under /run or /var/run
# log_directory: The logging directory, usually under /var/log
# file_logging = Whether to log daemon to a file (pvc.log under log_directory) in addition to
# normal stdout printing
# keepalive_interval: the interval between keepalives and for dead node timeout (defaults to 5)
# fence_intervals: the number of keepalive_intervals without Zookeeper contact before this node
# will consider another node dead and fence it (defaults to 6, i.e. 30s)
# suicide_intervals: the number of keepalive_intervals without Zookeeper contact before this
# node will consider itself failed and terminate all running VMs (defaults
# to 0, i.e. disabled); should be less than "fence_intervals"
# successful_fence: the action to take on a successful fencing operation; can be "none" or
# "migrate" (defaults to "migrate")
# failed_fence: the action to take on a failed fencing operation; can be "none" or "migrate"
# (defaults to "none"); "migrate" requires "suicide_intervals" to be set)
# NOTE: POTENTIALLY DANGEROUS - see README for details
# migration_target_selector: the method to use to select target nodes during a virtual machine
# flush action; can be "mem", "load", "vcpus", or "vms" (defaults
# to "mem"); the best choice based on this field is selected for
# each VM to be migrated
# The following values are required for each node specifically (usually node-unique):
# vni_dev: the lower-level network device to bind VNI traffic to
# vni_dev_ip: the IP address (in CIDR format) of the lower-level network device, used by frr
# to communicate between nodes and pass routes between them.
# storage_dev: the lower-level network device to bind storage traffic to
# storage_dev_ip: the IP address (in CIDR format) of the lower-level network device, used by
# Ceph for storage traffic (both monitor and OSD).
# ipmi_hostname: the IPMI hostname for fencing (defaults to <shortname>-lom.<domain>)
# ipmi_username: username to connect to IPMI
# ipmi_password: password to connect to IPMI
#
# Copy this example to /etc/pvc/pvcd.conf and edit to your needs
[default]
coordinators = pvc-hv1,pvc-hv2,pvc-hv3
dynamic_directory = /run/pvc
log_directory = /var/log/pvc
file_logging = True
keepalive_interval = 5
fence_intervals = 6
suicide_intervals = 0
successful_fence = migrate
failed_fence = none
migration_target_selector = mem
[pvc-hv1]
vni_dev = ens4
vni_dev_ip = 10.255.0.1/24
storage_dev = ens4
storage_dev_ip = 10.254.0.1/24
ipmi_username = admin
ipmi_password = Passw0rd
ipmi_hostname = pvc-hv1-lom

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router-daemon/pvcrd.py → node-daemon/pvcd.py
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@ -1,6 +1,6 @@
#!/usr/bin/env python3
# pvcrd.py - Router daemon startup stub
# pvcd.py - Node daemon startup stub
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
@ -20,4 +20,4 @@
#
###############################################################################
import pvcrd.Daemon
import pvcd.Daemon

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virtualization-daemon/pvcvd.service → node-daemon/pvcd.service
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@ -1,14 +1,14 @@
# Parallel Virtual Cluster virtualization daemon unit file
[Unit]
Description = Parallel Virtual Cluster virtualization daemon
Description = Parallel Virtual Cluster node daemon
After = network-online.target libvirtd.service zookeeper.service
[Service]
Type = simple
WorkingDirectory = /usr/share/pvc
Environment = PYTHONUNBUFFERED=true
Environment = PVCVD_CONFIG_FILE=/etc/pvc/pvcvd.conf
ExecStart = /usr/share/pvc/pvcvd.py
Environment = PVCD_CONFIG_FILE=/etc/pvc/pvcd.conf
ExecStart = /usr/share/pvc/pvcd.py
KillSignal = SIGINT
Restart = on-failure

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node-daemon/pvcd/Daemon.py Normal file
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@ -0,0 +1,571 @@
#!/usr/bin/env python3
# Daemon.py - Node daemon
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
version = '0.4'
import kazoo.client
import libvirt
import sys
import os
import signal
import atexit
import socket
import psutil
import subprocess
import uuid
import time
import re
import configparser
import apscheduler.schedulers.background
import pvcd.log as log
import pvcd.zkhandler as zkhandler
import pvcd.common as common
import pvcd.DomainInstance as DomainInstance
import pvcd.NodeInstance as NodeInstance
import pvcd.VXNetworkInstance as VXNetworkInstance
###############################################################################
# PVCD - node daemon startup program
###############################################################################
#
# The PVC daemon starts a node and configures all the required components for
# the node to run. It determines which of the 3 daemon modes it should be in
# during initial setup based on hostname and the config file, and then starts
# any required services. The 3 daemon modes are:
# * leader: the cluster leader, follows the Zookeeper leader
# * coordinator: a Zookeeper cluster member
# * hypervisor: a hypervisor without any cluster intelligence
#
###############################################################################
###############################################################################
# Daemon functions
###############################################################################
# Create timer to update this node in Zookeeper
def startKeepaliveTimer():
global update_timer
interval = int(config['keepalive_interval'])
logger.out('Starting keepalive timer ({} second interval)'.format(interval), state='s')
update_timer.add_job(update_zookeeper, 'interval', seconds=interval)
update_timer.start()
def stopKeepaliveTimer():
global update_timer
try:
update_timer.shutdown()
logger.out('Stopping keepalive timer', state='s')
except:
pass
###############################################################################
# PHASE 1a - Configuration parsing
###############################################################################
# Get the config file variable from the environment
try:
pvcvd_config_file = os.environ['PVCD_CONFIG_FILE']
except:
print('ERROR: The "PVCD_CONFIG_FILE" environment variable must be set before starting pvcd.')
exit(1)
# Set local hostname and domain variables
myfqdn = socket.gethostname()
#myfqdn = 'pvc-hv1.domain.net'
myhostname = myfqdn.split('.', 1)[0]
mydomainname = ''.join(myfqdn.split('.', 1)[1:])
mynodeid = re.findall(r'\d+', myhostname)[-1]
# Gather useful data about our host
# Static data format: 'cpu_count', 'arch', 'os', 'kernel'
staticdata = []
staticdata.append(str(psutil.cpu_count()))
staticdata.append(subprocess.run(['uname', '-r'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
staticdata.append(subprocess.run(['uname', '-o'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
staticdata.append(subprocess.run(['uname', '-m'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
# Create our timer object
update_timer = apscheduler.schedulers.background.BackgroundScheduler()
# Config values dictionary
config_values = [
'coordinators',
'dynamic_directory',
'log_directory',
'file_logging',
'keepalive_interval',
'fence_intervals',
'suicide_intervals',
'successful_fence',
'failed_fence',
'migration_target_selector',
'vni_dev',
'vni_dev_ip',
'storage_dev',
'storage_dev_ip',
'ipmi_hostname',
'ipmi_username',
'ipmi_password'
]
# Read and parse the config file
def readConfig(pvcvd_config_file, myhostname):
print('Loading configuration from file "{}"'.format(pvcvd_config_file))
o_config = configparser.ConfigParser()
o_config.read(pvcvd_config_file)
config = {}
try:
entries = o_config[myhostname]
except:
try:
entries = o_config['default']
except Exception as e:
print('ERROR: Config file is not valid!')
exit(1)
for entry in config_values:
try:
config[entry] = entries[entry]
except:
try:
config[entry] = o_config['default'][entry]
except:
print('ERROR: Config file missing required value "{}" for this host!'.format(entry))
exit(1)
# Handle an empty ipmi_hostname
if config['ipmi_hostname'] == '':
config['ipmi_hostname'] = myshorthostname + '-lom.' + mydomainname
return config
# Get the config object from readConfig()
config = readConfig(pvcvd_config_file, myhostname)
###############################################################################
# PHASE 1b - Prepare filesystem directories
###############################################################################
# Define our dynamic directory schema
# <dynamic_directory>/
# dnsmasq/
# pdns/
# nft/
config['dnsmasq_dynamic_directory'] = config['dynamic_directory'] + '/dnsmasq'
config['pdns_dynamic_directory'] = config['dynamic_directory'] + '/pdns'
config['nft_dynamic_directory'] = config['dynamic_directory'] + '/nft'
# Create our dynamic directories if they don't exist
if not os.path.exists(config['dynamic_directory']):
os.makedirs(config['dynamic_directory'])
os.makedirs(config['dnsmasq_dynamic_directory'])
os.makedirs(config['pdns_dynamic_directory'])
os.makedirs(config['nft_dynamic_directory'])
# Define our log directory schema
# <log_directory>/
# dnsmasq/
# pdns/
# nft/
config['dnsmasq_log_directory'] = config['log_directory'] + '/dnsmasq'
config['pdns_log_directory'] = config['log_directory'] + '/pdns'
config['nft_log_directory'] = config['log_directory'] + '/nft'
# Create our dynamic directories if they don't exist
if not os.path.exists(config['log_directory']):
os.makedirs(config['log_directory'])
os.makedirs(config['dnsmasq_log_directory'])
os.makedirs(config['pdns_log_directory'])
os.makedirs(config['nft_log_directory'])
###############################################################################
# PHASE 1c - Set up logging
###############################################################################
logger = log.Logger(config)
# Print our startup messages
logger.out('Parallel Virtual Cluster node daemon v{}'.format(version))
logger.out('FQDN: {}'.format(myfqdn))
logger.out('Host: {}'.format(myhostname))
logger.out('ID: {}'.format(mynodeid))
logger.out('IPMI hostname: {}'.format(config['ipmi_hostname']))
logger.out('Machine details:')
logger.out(' CPUs: {}'.format(staticdata[0]))
logger.out(' Arch: {}'.format(staticdata[3]))
logger.out(' OS: {}'.format(staticdata[2]))
logger.out(' Kernel: {}'.format(staticdata[1]))
logger.out('Starting pvcd on host {}'.format(myfqdn), state='s')
###############################################################################
# PHASE 2 - Determine coordinator mode and start Zookeeper on coordinators
###############################################################################
# What is the list of coordinator hosts
coordinator_hosts = config['coordinators'].split(',')
if myhostname in coordinator_hosts:
# We are indeed a coordinator host
config['daemon_mode'] = 'coordinator'
# Start the zookeeper service using systemctl
logger.out('Node is a ' + logger.fmt_blue + 'coordinator' + logger.fmt_end +'; starting Zookeeper daemon', state='i')
common.run_os_command('systemctl start zookeeper.service')
time.sleep(1)
else:
config['daemon_mode'] = 'hypervisor'
###############################################################################
# PHASE 3 - Attempt to connect to the coordinators and start zookeeper client
###############################################################################
# Start the connection to the coordinators
zk_conn = kazoo.client.KazooClient(hosts=config['coordinators'])
try:
logger.out('Connecting to Zookeeper cluster hosts {}'.format(config['coordinators']), state='i')
# Start connection
zk_conn.start()
except Exception as e:
logger.out('ERROR: Failed to connect to Zookeeper cluster: {}'.format(e), state='e')
exit(1)
# Handle zookeeper failures
def zk_listener(state):
global zk_conn, update_timer
if state == kazoo.client.KazooState.SUSPENDED:
logger.out('Connection to Zookeeper lost; retrying', state='w')
# Stop keepalive thread
if update_timer:
stopKeepaliveTimer()
while True:
try:
zk_conn.start()
break
except:
time.sleep(1)
elif state == kazoo.client.KazooState.CONNECTED:
logger.out('Connection to Zookeeper restarted', state='o')
# Start keepalive thread
if update_timer:
update_timer = createKeepaliveTimer()
else:
pass
zk_conn.add_listener(zk_listener)
###############################################################################
# PHASE 4 - Gracefully handle termination
###############################################################################
# Cleanup function
def cleanup():
global zk_conn, update_timer
# Stop keepalive thread
stopKeepaliveTimer()
logger.out('Terminating pvcd and cleaning up', state='s')
# Set stop state in Zookeeper
zkhandler.writedata(zk_conn, { '/nodes/{}/daemonstate'.format(myhostname): 'stop' })
# Force into secondary network state if needed
if this_node.name == this_node.primary_node:
zkhandler.writedata(zk_conn, { '/primary_node': 'none' })
# Wait for things to flush
time.sleep(3)
# Close the Zookeeper connection
try:
zk_conn.stop()
zk_conn.close()
except:
pass
# Handle exit gracefully
atexit.register(cleanup)
# Termination function
def term(signum='', frame=''):
# Exit
sys.exit(0)
# Handle signals gracefully
signal.signal(signal.SIGTERM, term)
signal.signal(signal.SIGINT, term)
signal.signal(signal.SIGQUIT, term)
###############################################################################
# PHASE 5 - Prepare host in Zookeeper
###############################################################################
# Check if our node exists in Zookeeper, and create it if not
if zk_conn.exists('/nodes/{}'.format(myhostname)):
logger.out("Node is " + logger.fmt_green + "present" + logger.fmt_end + " in Zookeeper", state='i')
zkhandler.writedata(zk_conn, { '/nodes/{}/daemonstate'.format(myhostname): 'init' })
# Update static data just in case it's changed
zkhandler.writedata(zk_conn, { '/nodes/{}/staticdata'.format(myhostname): ' '.join(staticdata) })
else:
logger.out("Node is " + logger.fmt_red + "absent" + logger.fmt_end + " in Zookeeper; adding new node", state='i')
keepalive_time = int(time.time())
transaction = zk_conn.transaction()
transaction.create('/nodes/{}'.format(myhostname), config['daemon_mode'].encode('ascii'))
# Basic state information
transaction.create('/nodes/{}/daemonmode'.format(myhostname), config['daemon_mode'].encode('ascii'))
transaction.create('/nodes/{}/daemonstate'.format(myhostname), 'init'.encode('ascii'))
transaction.create('/nodes/{}/routerstate'.format(myhostname), 'client'.encode('ascii'))
transaction.create('/nodes/{}/domainstate'.format(myhostname), 'flushed'.encode('ascii'))
transaction.create('/nodes/{}/staticdata'.format(myhostname), ' '.join(staticdata).encode('ascii'))
transaction.create('/nodes/{}/memfree'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/memused'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/memalloc'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/vcpualloc'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/cpuload'.format(myhostname), '0.0'.encode('ascii'))
transaction.create('/nodes/{}/networkscount'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/domainscount'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/runningdomains'.format(myhostname), ''.encode('ascii'))
# Keepalives and fencing information
transaction.create('/nodes/{}/keepalive'.format(myhostname), str(keepalive_time).encode('ascii'))
transaction.create('/nodes/{}/ipmihostname'.format(myhostname), config['ipmi_hostname'].encode('ascii'))
transaction.create('/nodes/{}/ipmiusername'.format(myhostname), config['ipmi_username'].encode('ascii'))
transaction.create('/nodes/{}/ipmipassword'.format(myhostname), config['ipmi_password'].encode('ascii'))
transaction.commit()
# Check that the primary key exists, and create it with us as master if not
current_primary = zkhandler.readdata(zk_conn, '/primary_node')
if current_primary and current_primary != 'none':
logger.out('Current primary node is "{}{}{}".'.format(logger.fmt_blue, current_primary, logger.fmt_end), state='i')
else:
logger.out('No primary node key found; creating with us as primary.', state='i')
zkhandler.writedata(zk_conn, { '/primary_node': myhostname })
###############################################################################
# PHASE 6 - Create local IP addresses for VNI and Storage networks
###############################################################################
# VNI configuration
vni_dev = config['vni_dev']
vni_dev_ip = config['vni_dev_ip']
logger.out('Setting up VNI network on interface {} with IP {}'.format(vni_dev, vni_dev_ip), state='i')
common.run_os_command('ip link set {} up'.format(vni_dev))
common.run_os_command('ip address add {} dev {}'.format(vni_dev_ip, vni_dev))
# Storage configurationm
storage_dev = config['storage_dev']
storage_dev_ip = config['storage_dev_ip']
logger.out('Setting up Storage network on interface {} with IP {}'.format(storage_dev, storage_dev_ip), state='i')
common.run_os_command('ip link set {} up'.format(storage_dev))
common.run_os_command('ip address add {} dev {}'.format(storage_dev_ip, storage_dev))
###############################################################################
# PHASE 7a - Ensure Libvirt is running on the local host
###############################################################################
# Start the zookeeper service using systemctl
logger.out('Starting Libvirt daemon', state='i')
common.run_os_command('systemctl start libvirtd.service')
time.sleep(1)
# Check that libvirtd is listening TCP
libvirt_check_name = "qemu+tcp://127.0.0.1:16509/system"
logger.out('Connecting to Libvirt daemon at {}'.format(libvirt_check_name), state='i')
try:
lv_conn = libvirt.open(libvirt_check_name)
lv_conn.close()
except Exception as e:
logger.out('ERROR: Failed to connect to Libvirt daemon: {}'.format(e), state='e')
exit(1)
###############################################################################
# PHASE 7b - Ensure Ceph is running on the local host
###############################################################################
# if coordinator, start ceph-mon
# if hypervisor or coodinator, start ceph-osds
###############################################################################
# PHASE 7c - Ensure NFT is running on the local host
###############################################################################
logger.out("Creating NFT firewall configuration", state='i')
# Create our config dirs
common.run_os_command(
'/bin/mkdir --parents {}/networks'.format(
config['nft_dynamic_directory']
)
)
common.run_os_command(
'/bin/mkdir --parents {}/static'.format(
config['nft_dynamic_directory']
)
)
common.run_os_command(
'/bin/mkdir --parents {}'.format(
config['nft_dynamic_directory']
)
)
# Set up the basic features of the nftables firewall
nftables_base_rules = """# Base rules
flush ruleset
# Add the filter table and chains
add table inet filter
add chain inet filter forward {{ type filter hook forward priority 0; }}
add chain inet filter input {{ type filter hook input priority 0; }}
# Include static rules and network rules
include "{rulesdir}/static/*"
include "{rulesdir}/networks/*"
""".format(
rulesdir=config['nft_dynamic_directory']
)
# Write the basic firewall config
nftables_base_filename = '{}/base.nft'.format(config['nft_dynamic_directory'])
nftables_update_filename = '{}/update'.format(config['nft_dynamic_directory'])
with open(nftables_base_filename, 'w') as nfbasefile:
nfbasefile.write(nftables_base_rules)
# Notify a reload of the firewall rules on next keepalive update
open(nftables_update_filename, 'a').close()
###############################################################################
# PHASE 8 - Set up our objects
###############################################################################
logger.out('Setting up objects', state='i')
d_node = dict()
d_network = dict()
d_domain = dict()
node_list = []
network_list = []
domain_list = []
# Node objects
@zk_conn.ChildrenWatch('/nodes')
def update_nodes(new_node_list):
global node_list, d_node
# Add any missing nodes to the list
for node in new_node_list:
if not node in node_list:
d_node[node] = NodeInstance.NodeInstance(node, myhostname, zk_conn, config, logger, d_node, d_network, d_domain)
# Remove any deleted nodes from the list
for node in node_list:
if not node in new_node_list:
# Delete the object
del(d_node[node])
# Update and print new list
node_list = new_node_list
logger.out('{}Node list:{} {}'.format(logger.fmt_blue, logger.fmt_end, ' '.join(node_list)), state='i')
# Update node objects' list
for node in d_node:
d_node[node].update_node_list(d_node)
# Alias for our local node (passed to network and domain objects)
this_node = d_node[myhostname]
# Network objects
@zk_conn.ChildrenWatch('/networks')
def update_networks(new_network_list):
global network_list, d_network
# Add any missing networks to the list
for network in new_network_list:
if not network in network_list:
d_network[network] = VXNetworkInstance.VXNetworkInstance(network, zk_conn, config, logger, this_node)
# Start primary functionality
if this_node.router_state == 'primary':
d_network[network].createGatewayAddress()
d_network[network].startDHCPServer()
# Remove any deleted networks from the list
for network in network_list:
if not network in new_network_list:
# Stop primary functionality
if this_router.router_state == 'primary':
d_network[network].stopDHCPServer()
d_network[network].removeGatewayAddress()
# Stop general functionality
d_network[network].removeFirewall()
d_network[network].removeNetwork()
# Delete the object
del(d_network[network])
# Update and print new list
network_list = new_network_list
logger.out('{}Network list:{} {}'.format(logger.fmt_blue, logger.fmt_end, ' '.join(network_list)), state='i')
# Update node objects' list
for node in d_node:
d_node[node].update_network_list(d_network)
# VM domain objects
@zk_conn.ChildrenWatch('/domains')
def update_domains(new_domain_list):
global domain_list, d_domain
# Add any missing domains to the list
for domain in new_domain_list:
if not domain in domain_list:
d_domain[domain] = DomainInstance.DomainInstance(domain, zk_conn, config, logger, this_node);
# Remove any deleted domains from the list
for domain in domain_list:
if not domain in new_domain_list:
# Delete the object
del(d_domain[domain])
# Update and print new list
domain_list = new_domain_list
logger.out('{}Domain list:{} {}'.format(logger.fmt_blue, logger.fmt_end, ' '.join(domain_list)), state='i')
# Update node objects' list
for node in d_node:
d_node[node].update_domain_list(d_domain)
###############################################################################
# PHASE 9 - Run the daemon
###############################################################################
# Set up our update function
update_zookeeper = this_node.update_zookeeper
# Start keepalive thread and immediately update Zookeeper
startKeepaliveTimer()
update_zookeeper()
# Tick loop
while True:
try:
time.sleep(1)
except:
break

103
virtualization-daemon/pvcvd/VMInstance.py → node-daemon/pvcd/DomainInstance.py
View File

@ -1,6 +1,6 @@
#!/usr/bin/env python3
# VMInstance.py - Class implementing a PVC virtual machine and run by pvcvd
# DomainInstance.py - Class implementing a PVC virtual machine in pvcd
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
@ -29,20 +29,21 @@ import threading
import libvirt
import kazoo.client
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import pvcd.log as log
import pvcd.zkhandler as zkhandler
class VMInstance:
class DomainInstance:
# Initialization function
def __init__(self, domuuid, zk_conn, config, thishypervisor):
def __init__(self, domuuid, zk_conn, config, logger, this_node):
# Passed-in variables on creation
self.domuuid = domuuid
self.zk_conn = zk_conn
self.config = config
self.thishypervisor = thishypervisor
self.logger = logger
self.this_node = this_node
# These will all be set later
self.hypervisor = None
self.node = None
self.state = None
self.instart = False
self.inrestart = False
@ -72,8 +73,8 @@ class VMInstance:
def getstate(self):
return self.state
def gethypervisor(self):
return self.hypervisor
def getnode(self):
return self.node
def getdom(self):
return self.dom
@ -96,35 +97,35 @@ class VMInstance:
# Manage local node domain_list
def addDomainToList(self):
if not self.domuuid in self.thishypervisor.domain_list:
if not self.domuuid in self.this_node.domain_list:
try:
# Add the domain to the domain_list array
self.thishypervisor.domain_list.append(self.domuuid)
self.this_node.domain_list.append(self.domuuid)
# Push the change up to Zookeeper
zkhandler.writedata(self.zk_conn, { '/nodes/{}/runningdomains'.format(self.thishypervisor.name): ' '.join(self.thishypervisor.domain_list) })
zkhandler.writedata(self.zk_conn, { '/nodes/{}/runningdomains'.format(self.this_node.name): ' '.join(self.this_node.domain_list) })
except Exception as e:
ansiiprint.echo('Error adding domain to list: {}'.format(e), '', 'c')
self.logger.out('Error adding domain to list: {}'.format(e), state='c')
def removeDomainFromList(self):
if self.domuuid in self.thishypervisor.domain_list:
if self.domuuid in self.this_node.domain_list:
try:
# Remove the domain from the domain_list array
self.thishypervisor.domain_list.remove(self.domuuid)
self.this_node.domain_list.remove(self.domuuid)
# Push the change up to Zookeeper
zkhandler.writedata(self.zk_conn, { '/nodes/{}/runningdomains'.format(self.thishypervisor.name): ' '.join(self.thishypervisor.domain_list) })
zkhandler.writedata(self.zk_conn, { '/nodes/{}/runningdomains'.format(self.this_node.name): ' '.join(self.this_node.domain_list) })
except Exception as e:
ansiiprint.echo('Error removing domain from list: {}'.format(e), '', 'c')
self.logger.out('Error removing domain from list: {}'.format(e), state='c')
# Start up the VM
def start_vm(self):
ansiiprint.echo('Starting VM', '{}:'.format(self.domuuid), 'i')
self.logger.out('Starting VM', state='i', prefix='Domain {}:'.format(self.domuuid))
self.instart = True
# Start up a new Libvirt connection
libvirt_name = "qemu:///system"
lv_conn = libvirt.open(libvirt_name)
if lv_conn == None:
ansiiprint.echo('Failed to open local libvirt connection', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to open local libvirt connection', state='e', prefix='Domain {}:'.format(self.domuuid))
self.instart = False
return
@ -146,11 +147,11 @@ class VMInstance:
xmlconfig = zkhandler.readdata(self.zk_conn, '/domains/{}/xml'.format(self.domuuid))
dom = lv_conn.createXML(xmlconfig, 0)
self.addDomainToList()
ansiiprint.echo('Successfully started VM', '{}:'.format(self.domuuid), 'o')
self.logger.out('Successfully started VM', state='o', prefix='Domain {}:'.format(self.domuuid))
self.dom = dom
zkhandler.writedata(self.zk_conn, { '/domains/{}/failedreason'.format(self.domuuid): '' })
except libvirt.libvirtError as e:
ansiiprint.echo('Failed to create VM', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to create VM', state='e', prefix='Domain {}:'.format(self.domuuid))
zkhandler.writedata(self.zk_conn, { '/domains/{}/state'.format(self.domuuid): 'failed' })
zkhandler.writedata(self.zk_conn, { '/domains/{}/failedreason'.format(self.domuuid): str(e) })
self.dom = None
@ -160,14 +161,14 @@ class VMInstance:
# Restart the VM
def restart_vm(self):
ansiiprint.echo('Restarting VM', '{}:'.format(self.domuuid), 'i')
self.logger.out('Restarting VM', state='i', prefix='Domain {}:'.format(self.domuuid))
self.inrestart = True
# Start up a new Libvirt connection
libvirt_name = "qemu:///system"
lv_conn = libvirt.open(libvirt_name)
if lv_conn == None:
ansiiprint.echo('Failed to open local libvirt connection', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to open local libvirt connection', state='e', prefix='Domain {}:'.format(self.domuuid))
self.inrestart = False
return
@ -181,37 +182,37 @@ class VMInstance:
# Stop the VM forcibly without updating state
def terminate_vm(self):
ansiiprint.echo('Terminating VM', '{}:'.format(self.domuuid), 'i')
self.logger.out('Terminating VM', state='i', prefix='Domain {}:'.format(self.domuuid))
self.instop = True
try:
self.dom.destroy()
except AttributeError:
ansiiprint.echo('Failed to terminate VM', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to terminate VM', state='e', prefix='Domain {}:'.format(self.domuuid))
self.removeDomainFromList()
ansiiprint.echo('Successfully terminated VM', '{}:'.format(self.domuuid), 'o')
self.logger.out('Successfully terminated VM', state='o', prefix='Domain {}:'.format(self.domuuid))
self.dom = None
self.instop = False
# Stop the VM forcibly
def stop_vm(self):
ansiiprint.echo('Forcibly stopping VM', '{}:'.format(self.domuuid), 'i')
self.logger.out('Forcibly stopping VM', state='i', prefix='Domain {}:'.format(self.domuuid))
self.instop = True
try:
self.dom.destroy()
except AttributeError:
ansiiprint.echo('Failed to stop VM', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to stop VM', state='e', prefix='Domain {}:'.format(self.domuuid))
self.removeDomainFromList()
if self.inrestart == False:
zkhandler.writedata(self.zk_conn, { '/domains/{}/state'.format(self.domuuid): 'stop' })
ansiiprint.echo('Successfully stopped VM', '{}:'.format(self.domuuid), 'o')
self.logger.out('Successfully stopped VM', state='o', prefix='Domain {}:'.format(self.domuuid))
self.dom = None
self.instop = False
# Shutdown the VM gracefully
def shutdown_vm(self):
ansiiprint.echo('Gracefully stopping VM', '{}:'.format(self.domuuid), 'i')
self.logger.out('Gracefully stopping VM', state='i', prefix='Domain {}:'.format(self.domuuid))
self.inshutdown = True
self.dom.shutdown()
try:
@ -221,7 +222,7 @@ class VMInstance:
time.sleep(0.5)
if tick >= 60:
ansiiprint.echo('Shutdown timeout expired', '{}:'.format(self.domuuid), 'e')
self.logger.out('Shutdown timeout expired', state='e', prefix='Domain {}:'.format(self.domuuid))
self.stop_vm()
self.inshutdown = False
return
@ -233,24 +234,24 @@ class VMInstance:
if self.inrestart == False:
zkhandler.writedata(self.zk_conn, { '/domains/{}/state'.format(self.domuuid): 'stop' })
ansiiprint.echo('Successfully shutdown VM', '{}:'.format(self.domuuid), 'o')
self.logger.out('Successfully shutdown VM', state='o', prefix='Domain {}:'.format(self.domuuid))
self.dom = None
self.inshutdown = False
def live_migrate_vm(self, dest_hypervisor):
def live_migrate_vm(self, dest_node):
try:
dest_lv_conn = libvirt.open('qemu+tcp://{}/system'.format(self.hypervisor))
dest_lv_conn = libvirt.open('qemu+tcp://{}/system'.format(self.node))
if dest_lv_conn == None:
raise
except:
ansiiprint.echo('Failed to open connection to qemu+tcp://{}/system; aborting migration.'.format(self.hypervisor), '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to open connection to qemu+tcp://{}/system; aborting migration.'.format(self.node), state='e', prefix='Domain {}:'.format(self.domuuid))
return 1
try:
target_dom = self.dom.migrate(dest_lv_conn, libvirt.VIR_MIGRATE_LIVE, None, None, 0)
if target_dom == None:
raise
ansiiprint.echo('Successfully migrated VM', '{}:'.format(self.domuuid), 'o')
self.logger.out('Successfully migrated VM', state='o', prefix='Domain {}:'.format(self.domuuid))
except:
dest_lv_conn.close()
@ -262,15 +263,15 @@ class VMInstance:
# Migrate the VM to a target host
def migrate_vm(self):
self.inmigrate = True
ansiiprint.echo('Migrating VM to hypervisor "{}"'.format(self.hypervisor), '{}:'.format(self.domuuid), 'i')
self.logger.out('Migrating VM to node "{}"'.format(self.node), state='i', prefix='Domain {}:'.format(self.domuuid))
try:
migrate_ret = self.live_migrate_vm(self.hypervisor)
migrate_ret = self.live_migrate_vm(self.node)
except:
migrate_ret = 0
if migrate_ret != 0:
ansiiprint.echo('Could not live migrate VM; shutting down to migrate instead', '{}:'.format(self.domuuid), 'e')
self.logger.out('Could not live migrate VM; shutting down to migrate instead', state='e', prefix='Domain {}:'.format(self.domuuid))
self.shutdown_vm()
time.sleep(1)
else:
@ -283,7 +284,7 @@ class VMInstance:
# Receive the migration from another host (wait until VM is running)
def receive_migrate(self):
self.inreceive = True
ansiiprint.echo('Receiving migration', '{}:'.format(self.domuuid), 'i')
self.logger.out('Receiving migration', state='i', prefix='Domain {}:'.format(self.domuuid))
while True:
time.sleep(0.5)
self.state = zkhandler.readdata(self.zk_conn, '/domains/{}/state'.format(self.domuuid))
@ -308,9 +309,9 @@ class VMInstance:
if dom_state == libvirt.VIR_DOMAIN_RUNNING:
self.addDomainToList()
ansiiprint.echo('Successfully received migrated VM', '{}:'.format(self.domuuid), 'o')
self.logger.out('Successfully received migrated VM', state='o', prefix='Domain {}:'.format(self.domuuid))
else:
ansiiprint.echo('Failed to receive migrated VM', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to receive migrated VM', state='e', prefix='Domain {}:'.format(self.domuuid))
self.inreceive = False
@ -323,7 +324,7 @@ class VMInstance:
# Get the current values from zookeeper (don't rely on the watch)
self.state = zkhandler.readdata(self.zk_conn, '/domains/{}/state'.format(self.domuuid))
self.hypervisor = zkhandler.readdata(self.zk_conn, '/domains/{}/hypervisor'.format(self.domuuid))
self.node = zkhandler.readdata(self.zk_conn, '/domains/{}/node'.format(self.domuuid))
# Check the current state of the VM
try:
@ -334,7 +335,7 @@ class VMInstance:
except:
running = libvirt.VIR_DOMAIN_NOSTATE
ansiiprint.echo('VM state change for "{}": {} {}'.format(self.domuuid, self.state, self.hypervisor), '', 'i')
self.logger.out('VM state change for "{}": {} {}'.format(self.domuuid, self.state, self.node), state='i')
#######################
# Handle state changes
@ -353,9 +354,9 @@ class VMInstance:
and self.inreceive == False \
and self.inshutdown == False \
and self.instop == False:
# Conditional pass two - Is this VM configured to run on this hypervisor
if self.hypervisor == self.thishypervisor.name:
# Conditional pass three - Is this VM currently running on this hypervisor
# Conditional pass two - Is this VM configured to run on this node
if self.node == self.this_node.name:
# Conditional pass three - Is this VM currently running on this node
if running == libvirt.VIR_DOMAIN_RUNNING:
# VM is already running and should be
if self.state == "start":
@ -377,7 +378,7 @@ class VMInstance:
# VM should be started
if self.state == "start":
self.start_vm()
# VM should be migrated to this hypervisor
# VM should be migrated to this node
elif self.state == "migrate":
self.receive_migrate()
# VM should be restarted (i.e. started since it isn't running)
@ -391,9 +392,9 @@ class VMInstance:
self.removeDomainFromList()
else:
# Conditional pass three - Is this VM currently running on this hypervisor
# Conditional pass three - Is this VM currently running on this node
if running == libvirt.VIR_DOMAIN_RUNNING:
# VM should be migrated away from this hypervisor
# VM should be migrated away from this node
if self.state == "migrate":
self.migrate_vm()
# VM should be terminated
@ -417,7 +418,7 @@ class VMInstance:
# Open a libvirt connection
lv_conn = libvirt.open(libvirt_name)
if lv_conn == None:
ansiiprint.echo('Failed to open local libvirt connection', '{}:'.format(self.domuuid), 'e')
self.logger.out('Failed to open local libvirt connection', state='e', prefix='Domain {}:'.format(self.domuuid))
return dom
# Lookup the UUID

457
virtualization-daemon/pvcvd/NodeInstance.py → node-daemon/pvcd/NodeInstance.py
View File

@ -1,6 +1,6 @@
#!/usr/bin/env python3
# NodeInstance.py - Class implementing a PVC node and run by pvcvd
# NodeInstance.py - Class implementing a PVC node in pvcd
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
@ -26,195 +26,301 @@ import psutil
import socket
import time
import libvirt
import kazoo.client
import threading
import subprocess
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import pvcd.log as log
import pvcd.zkhandler as zkhandler
import pvcd.common as common
class NodeInstance():
# Initialization function
def __init__(self, this_node, name, t_node, s_domain, zk_conn, config):
def __init__(self, name, this_node, zk_conn, config, logger, d_node, d_network, d_domain):
# Passed-in variables on creation
self.name = name
self.this_node = this_node
self.zk_conn = zk_conn
self.config = config
self.this_node = this_node
self.name = name
self.logger = logger
# The IPMI hostname for fencing
self.ipmi_hostname = self.config['ipmi_hostname']
# Which node is primary
self.primary_node = None
# States
self.daemon_mode = zkhandler.readdata(self.zk_conn, '/nodes/{}/daemonmode'.format(self.name))
self.daemon_state = 'stop'
self.router_state = 'client'
self.domain_state = 'ready'
self.t_node = t_node
# Object lists
self.d_node = d_node
self.d_network = d_network
self.d_domain = d_domain
# Printable lists
self.active_node_list = []
self.flushed_node_list = []
self.inactive_node_list = []
self.s_domain = s_domain
self.network_list = []
self.domain_list = []
self.ipmi_hostname = self.config['ipmi_hostname']
# Node resources
self.networks_count = 0
self.domains_count = 0
self.memused = 0
self.memfree = 0
self.memalloc = 0
self.vcpualloc = 0
# Flags
self.inflush = False
# Zookeeper handlers for changed states
@self.zk_conn.DataWatch('/nodes/{}/daemonstate'.format(self.name))
def watch_hypervisor_daemonstate(data, stat, event=""):
def watch_node_daemonstate(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.daemon_state = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.daemon_state = 'stop'
data = 'stop'
if data != self.daemon_state:
self.daemon_state = data
@self.zk_conn.DataWatch('/nodes/{}/routerstate'.format(self.name))
def watch_node_routerstate(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
data = data.decode('ascii')
except AttributeError:
data = 'client'
if self.name == self.this_node and self.daemon_mode == 'coordinator':
# We're a coordinator so we care about networking
if data != self.router_state:
self.router_state = data
if self.router_state == 'primary':
self.become_primary()
else:
self.become_secondary()
@self.zk_conn.DataWatch('/nodes/{}/domainstate'.format(self.name))
def watch_hypervisor_domainstate(data, stat, event=""):
def watch_node_domainstate(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.domain_state = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.domain_state = 'unknown'
data = 'unknown'
# toggle state management of this node
if self.name == self.this_node:
if self.domain_state == 'flush' and self.inflush == False:
# Do flushing in a thread so it doesn't block the migrates out
flush_thread = threading.Thread(target=self.flush, args=(), kwargs={})
flush_thread.start()
if self.domain_state == 'unflush' and self.inflush == False:
self.unflush()
if data != self.domain_state:
self.domain_state = data
# toggle state management of this node
if self.name == self.this_node:
if self.domain_state == 'flush' and self.inflush == False:
# Do flushing in a thread so it doesn't block the migrates out
flush_thread = threading.Thread(target=self.flush, args=(), kwargs={})
flush_thread.start()
if self.domain_state == 'unflush' and self.inflush == False:
self.unflush()
@self.zk_conn.DataWatch('/primary_node')
def watch_primary_node(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
data = data.decode('ascii')
except AttributeError:
data = 'none'
if data != self.primary_node:
if self.daemon_mode == 'coordinator':
# We're a coordinator so we care about networking
if data == 'none':
# Toggle state management of routing functions
if self.name == self.this_node:
if self.daemon_state == 'run' and self.router_state != 'primary':
# Contend for primary
self.logger.out('Contending for primary routing state', state='i')
zkhandler.writedata(self.zk_conn, {'/primary_node': self.name })
elif data == self.this_node:
if self.name == self.this_node:
zkhandler.writedata(self.zk_conn, { '/nodes/{}/routerstate'.format(self.name): 'primary' })
self.primary_node = data
else:
if self.name == self.this_node:
zkhandler.writedata(self.zk_conn, { '/nodes/{}/routerstate'.format(self.name): 'secondary' })
self.primary_node = data
else:
self.primary_node = data
@self.zk_conn.DataWatch('/nodes/{}/memfree'.format(self.name))
def watch_hypervisor_memfree(data, stat, event=""):
def watch_node_memfree(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.memfree = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.memfree = 0
data = 0
if data != self.memfree:
self.memfree = data
@self.zk_conn.DataWatch('/nodes/{}/memused'.format(self.name))
def watch_hypervisor_memused(data, stat, event=""):
def watch_node_memused(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.memused = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.memused = 0
data = 0
if data != self.memused:
self.memused = data
@self.zk_conn.DataWatch('/nodes/{}/memalloc'.format(self.name))
def watch_hypervisor_memalloc(data, stat, event=""):
def watch_node_memalloc(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.memalloc = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.memalloc = 0
data = 0
if data != self.memalloc:
self.memalloc = data
@self.zk_conn.DataWatch('/nodes/{}/vcpualloc'.format(self.name))
def watch_hypervisor_vcpualloc(data, stat, event=""):
def watch_node_vcpualloc(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.vcpualloc = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.vcpualloc = 0
data = 0
if data != self.vcpualloc:
self.vcpualloc = data
@self.zk_conn.DataWatch('/nodes/{}/runningdomains'.format(self.name))
def watch_hypervisor_runningdomains(data, stat, event=""):
def watch_node_runningdomains(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.domain_list = data.decode('ascii').split()
data = data.decode('ascii').split()
except AttributeError:
self.domain_list = []
data = []
@self.zk_conn.DataWatch('/nodes/{}/domainscount'.format(self.name))
def watch_hypervisor_domainscount(data, stat, event=""):
if data != self.domain_list:
self.domain_list = data
@self.zk_conn.DataWatch('/nodes/{}/networkscount'.format(self.name))
def watch_node_networkscount(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
try:
self.domains_count = data.decode('ascii')
data = data.decode('ascii')
except AttributeError:
self.domains_count = 0
data = 0
if data != self.networks_count:
self.networks_count = data
# Get value functions
def getfreemem(self):
return self.memfree
@self.zk_conn.DataWatch('/nodes/{}/domainscount'.format(self.name))
def watch_node_domainscount(data, stat, event=''):
if event and event.type == 'DELETED':
# The key has been deleted after existing before; terminate this watcher
# because this class instance is about to be reaped in Daemon.py
return False
def getallocmem(self):
return self.memalloc
def getallocvcpu(self):
return self.vcpualloc
def getcpuload(self):
return self.cpuload
def getname(self):
return self.name
def getdaemonstate(self):
return self.daemon_state
def getdomainstate(self):
return self.domain_state
def getdomainlist(self):
return self.domain_list
try:
data = data.decode('ascii')
except AttributeError:
data = 0
if data != self.domains_count:
self.domains_count = data
# Update value functions
def updatenodelist(self, t_node):
self.t_node = t_node
def update_node_list(self, d_node):
self.d_node = d_node
def updatedomainlist(self, s_domain):
self.s_domain = s_domain
def update_network_list(self, d_network):
self.d_network = d_network
network_list = []
for network in self.d_network:
network_list.append(d_network[network].vni)
self.network_list = network_list
def update_domain_list(self, d_domain):
self.d_domain = d_domain
# Routing primary/secondary states
def become_secondary(self):
self.logger.out('Setting router {} to secondary state'.format(self.name), state='i')
self.logger.out('Network list: {}'.format(', '.join(self.network_list)))
time.sleep(0.5)
for network in self.d_network:
self.d_network[network].stopDHCPServer()
self.d_network[network].removeGatewayAddress()
def become_primary(self):
self.logger.out('Setting router {} to primary state.'.format(self.name), state='i')
self.logger.out('Network list: {}'.format(', '.join(self.network_list)))
for network in self.d_network:
self.d_network[network].createGatewayAddress()
self.d_network[network].startDHCPServer()
# Flush all VMs on the host
def flush(self):
self.inflush = True
ansiiprint.echo('Flushing node "{}" of running VMs'.format(self.name), '', 'i')
ansiiprint.echo('Domain list: {}'.format(', '.join(self.domain_list)), '', 'c')
self.logger.out('Flushing node "{}" of running VMs'.format(self.name), state='i')
self.logger.out('Domain list: {}'.format(', '.join(self.domain_list)))
fixed_domain_list = self.domain_list.copy()
for dom_uuid in fixed_domain_list:
ansiiprint.echo('Selecting target to migrate VM "{}"'.format(dom_uuid), '', 'i')
self.logger.out('Selecting target to migrate VM "{}"'.format(dom_uuid), state='i')
current_hypervisor = zkhandler.readdata(self.zk_conn, '/domains/{}/hypervisor'.format(dom_uuid))
target_hypervisor = findTargetHypervisor(self.zk_conn, 'mem', dom_uuid)
if target_hypervisor == None:
ansiiprint.echo('Failed to find migration target for VM "{}"; shutting down'.format(dom_uuid), '', 'e')
current_node = zkhandler.readdata(self.zk_conn, '/domains/{}/node'.format(dom_uuid))
target_node = findTargetHypervisor(self.zk_conn, 'mem', dom_uuid)
if target_node == None:
self.logger.out('Failed to find migration target for VM "{}"; shutting down'.format(dom_uuid), state='e')
zkhandler.writedata(self.zk_conn, { '/domains/{}/state'.format(dom_uuid): 'shutdown' })
else:
ansiiprint.echo('Migrating VM "{}" to hypervisor "{}"'.format(dom_uuid, target_hypervisor), '', 'i')
self.logger.out('Migrating VM "{}" to node "{}"'.format(dom_uuid, target_node), state='i')
zkhandler.writedata(self.zk_conn, {
'/domains/{}/state'.format(dom_uuid): 'migrate',
'/domains/{}/hypervisor'.format(dom_uuid): target_hypervisor,
'/domains/{}/lasthypervisor'.format(dom_uuid): current_hypervisor
'/domains/{}/node'.format(dom_uuid): target_node,
'/domains/{}/lastnode'.format(dom_uuid): current_node
})
# Wait for the VM to migrate so the next VM's free RAM count is accurate (they migrate in serial anyways)
@ -230,23 +336,23 @@ class NodeInstance():
def unflush(self):
self.inflush = True
ansiiprint.echo('Restoring node {} to active service.'.format(self.name), '', 'i')
self.logger.out('Restoring node {} to active service.'.format(self.name), state='i')
zkhandler.writedata(self.zk_conn, { '/nodes/{}/domainstate'.format(self.name): 'ready' })
fixed_domain_list = self.s_domain.copy()
fixed_domain_list = self.d_domain.copy()
for dom_uuid in fixed_domain_list:
try:
last_hypervisor = zkhandler.readdata(self.zk_conn, '/domains/{}/lasthypervisor'.format(dom_uuid))
last_node = zkhandler.readdata(self.zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
except:
continue
if last_hypervisor != self.name:
if last_node != self.name:
continue
ansiiprint.echo('Setting unmigration for VM "{}"'.format(dom_uuid), '', 'i')
self.logger.out('Setting unmigration for VM "{}"'.format(dom_uuid), state='i')
zkhandler.writedata(self.zk_conn, {
'/domains/{}/state'.format(dom_uuid): 'migrate',
'/domains/{}/hypervisor'.format(dom_uuid): self.name,
'/domains/{}/lasthypervisor'.format(dom_uuid): ''
'/domains/{}/node'.format(dom_uuid): self.name,
'/domains/{}/lastnode'.format(dom_uuid): ''
})
self.inflush = False
@ -256,7 +362,7 @@ class NodeInstance():
libvirt_name = "qemu:///system"
lv_conn = libvirt.open(libvirt_name)
if lv_conn == None:
ansiiprint.echo('Failed to open connection to "{}"'.format(libvirt_name), '', 'e')
self.logger.out('Failed to open connection to "{}"'.format(libvirt_name), state='e')
return
# Get past state and update if needed
@ -267,15 +373,21 @@ class NodeInstance():
else:
self.daemon_state = 'run'
# Ensure the primary key is properly set
if self.name == self.this_node:
if self.router_state == 'primary':
if zkhandler.readdata(self.zk_conn, '/primary_node') != self.name:
zkhandler.writedata(self.zk_conn, {'/primary_node': self.name})
# Toggle state management of dead VMs to restart them
memalloc = 0
vcpualloc = 0
for domain, instance in self.s_domain.items():
if instance.inshutdown == False and domain in self.domain_list:
for domain, instance in self.d_domain.items():
if domain in self.domain_list:
# Add the allocated memory to our memalloc value
memalloc += instance.getmemory()
vcpualloc += instance.getvcpus()
if instance.getstate() == 'start' and instance.gethypervisor() == self.name:
if instance.getstate() == 'start' and instance.getnode() == self.name:
if instance.getdom() != None:
try:
if instance.getdom().state()[0] != libvirt.VIR_DOMAIN_RUNNING:
@ -292,7 +404,7 @@ class NodeInstance():
self.domain_list.append(domain_uuid)
# Set our information in zookeeper
self.name = lv_conn.getHostname()
#self.name = lv_conn.getHostname()
self.memused = int(psutil.virtual_memory().used / 1024 / 1024)
self.memfree = int(psutil.virtual_memory().free / 1024 / 1024)
self.memalloc = memalloc
@ -307,23 +419,40 @@ class NodeInstance():
'/nodes/{}/memalloc'.format(self.name): str(self.memalloc),
'/nodes/{}/vcpualloc'.format(self.name): str(self.vcpualloc),
'/nodes/{}/cpuload'.format(self.name): str(self.cpuload),
'/nodes/{}/runningdomains'.format(self.name): ' '.join(self.domain_list),
'/nodes/{}/networkscount'.format(self.name): str(self.networks_count),
'/nodes/{}/domainscount'.format(self.name): str(self.domains_count),
'/nodes/{}/runningdomains'.format(self.name): ' '.join(self.domain_list),
'/nodes/{}/keepalive'.format(self.name): str(keepalive_time)
})
except:
ansiiprint.echo('Failed to set keepalive data', '', 'e')
self.logger.out('Failed to set keepalive data', state='e')
return
# Close the Libvirt connection
lv_conn.close()
# Display node information to the terminal
ansiiprint.echo('{}{} keepalive{}'.format(ansiiprint.purple(), self.name, ansiiprint.end()), '', 't')
ansiiprint.echo('{0}Active domains:{1} {2} {0}Allocated memory [MiB]:{1} {6} {0}Free memory [MiB]:{1} {3} {0}Used memory [MiB]:{1} {4} {0}Load:{1} {5}'.format(ansiiprint.bold(), ansiiprint.end(), self.domains_count, self.memfree, self.memused, self.cpuload, self.memalloc), '', 'c')
self.logger.out('{}{} keepalive{}'.format(self.logger.fmt_purple, self.name, self.logger.fmt_end), state='t')
self.logger.out(
'{bold}Domains:{nobold} {domcount} '
'{bold}Networks:{nobold} {netcount} '
'{bold}Allocated memory [MiB]:{nobold} {allocmem} '
'{bold}Free memory [MiB]:{nobold} {freemem} '
'{bold}Used memory [MiB]:{nobold} {usedmem} '
'{bold}Load:{nobold} {load}'.format(
bold=self.logger.fmt_bold,
nobold=self.logger.fmt_end,
domcount=self.domains_count,
freemem=self.memfree,
usedmem=self.memused,
load=self.cpuload,
allocmem=self.memalloc,
netcount=self.networks_count
),
)
# Update our local node lists
for node_name in self.t_node:
for node_name in self.d_node:
try:
node_daemon_state = zkhandler.readdata(self.zk_conn, '/nodes/{}/daemonstate'.format(node_name))
node_domain_state = zkhandler.readdata(self.zk_conn, '/nodes/{}/domainstate'.format(node_name))
@ -338,9 +467,9 @@ class NodeInstance():
# out-of-date while in 'start' state)
node_deadtime = int(time.time()) - ( int(self.config['keepalive_interval']) * int(self.config['fence_intervals']) )
if node_keepalive < node_deadtime and node_daemon_state == 'run':
ansiiprint.echo('Node {} seems dead - starting monitor for fencing'.format(node_name), '', 'w')
self.logger.out('Node {} seems dead - starting monitor for fencing'.format(node_name), state='w')
zkhandler.writedata(self.zk_conn, { '/nodes/{}/daemonstate'.format(node_name): 'dead' })
fence_thread = threading.Thread(target=fenceNode, args=(node_name, self.zk_conn, self.config), kwargs={})
fence_thread = threading.Thread(target=fenceNode, args=(node_name, self.zk_conn, self.config, self.logger), kwargs={})
fence_thread.start()
# Update the arrays
@ -374,12 +503,22 @@ class NodeInstance():
self.inactive_node_list.remove(node_name)
except ValueError:
pass
# List of the non-primary coordinators
secondary_node_list = self.config['coordinators'].split(',')
if secondary_node_list:
secondary_node_list.remove(self.primary_node)
for node in secondary_node_list:
if node in self.inactive_node_list:
secondary_node_list.remove(node)
# Display cluster information to the terminal
ansiiprint.echo('{}Cluster status{}'.format(ansiiprint.purple(), ansiiprint.end()), '', 't')
ansiiprint.echo('{}Active nodes:{} {}'.format(ansiiprint.bold(), ansiiprint.end(), ' '.join(self.active_node_list)), '', 'c')
ansiiprint.echo('{}Inactive nodes:{} {}'.format(ansiiprint.bold(), ansiiprint.end(), ' '.join(self.inactive_node_list)), '', 'c')
ansiiprint.echo('{}Flushed nodes:{} {}'.format(ansiiprint.bold(), ansiiprint.end(), ' '.join(self.flushed_node_list)), '', 'c')
self.logger.out('{}Cluster status{}'.format(self.logger.fmt_purple, self.logger.fmt_end), state='t')
self.logger.out('{}Primary coordinator:{} {}'.format(self.logger.fmt_bold, self.logger.fmt_end, self.primary_node))
self.logger.out('{}Secondary coordinators:{} {}'.format(self.logger.fmt_bold, self.logger.fmt_end, ' '.join(secondary_node_list)))
self.logger.out('{}Active hypervisors:{} {}'.format(self.logger.fmt_bold, self.logger.fmt_end, ' '.join(self.active_node_list)))
self.logger.out('{}Flushed hypervisors:{} {}'.format(self.logger.fmt_bold, self.logger.fmt_end, ' '.join(self.flushed_node_list)))
self.logger.out('{}Inactive nodes:{} {}'.format(self.logger.fmt_bold, self.logger.fmt_end, ' '.join(self.inactive_node_list)))
#
# Find a migration target
@ -395,95 +534,95 @@ def findTargetHypervisor(zk_conn, search_field, dom_uuid):
return findTargetHypervisorVMs(zk_conn, dom_uuid)
return None
# Get the list of valid target hypervisors
# Get the list of valid target nodes
def getHypervisors(zk_conn, dom_uuid):
valid_hypervisor_list = []
full_hypervisor_list = zkhandler.listchildren(zk_conn, '/nodes')
current_hypervisor = zkhandler.readdata(zk_conn, '/domains/{}/hypervisor'.format(dom_uuid))
valid_node_list = []
full_node_list = zkhandler.listchildren(zk_conn, '/nodes')
current_node = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(dom_uuid))
for hypervisor in full_hypervisor_list:
daemon_state = zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(hypervisor))
domain_state = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(hypervisor))
for node in full_node_list:
daemon_state = zkhandler.readdata(zk_conn, '/nodes/{}/daemonstate'.format(node))
domain_state = zkhandler.readdata(zk_conn, '/nodes/{}/domainstate'.format(node))
if hypervisor == current_hypervisor:
if node == current_node:
continue
if daemon_state != 'run' or domain_state != 'ready':
continue
valid_hypervisor_list.append(hypervisor)
valid_node_list.append(node)
return valid_hypervisor_list
return valid_node_list
# via free memory (relative to allocated memory)
def findTargetHypervisorMem(zk_conn, dom_uuid):
most_allocfree = 0
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
memalloc = int(zkhandler.readdata(zk_conn, '/nodes/{}/memalloc'.format(hypervisor)))
memused = int(zkhandler.readdata(zk_conn, '/nodes/{}/memused'.format(hypervisor)))
memfree = int(zkhandler.readdata(zk_conn, '/nodes/{}/memfree'.format(hypervisor)))
node_list = getHypervisors(zk_conn, dom_uuid)
for node in node_list:
memalloc = int(zkhandler.readdata(zk_conn, '/nodes/{}/memalloc'.format(node)))
memused = int(zkhandler.readdata(zk_conn, '/nodes/{}/memused'.format(node)))
memfree = int(zkhandler.readdata(zk_conn, '/nodes/{}/memfree'.format(node)))
memtotal = memused + memfree
allocfree = memtotal - memalloc
if allocfree > most_allocfree:
most_allocfree = allocfree
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node
# via load average
def findTargetHypervisorLoad(zk_conn, dom_uuid):
least_load = 9999
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
load = int(zkhandler.readdata(zk_conn, '/nodes/{}/load'.format(hypervisor)))
node_list = getHypervisors(zk_conn, dom_uuid)
for node in node_list:
load = int(zkhandler.readdata(zk_conn, '/nodes/{}/load'.format(node)))
if load < least_load:
least_load = load
target_hypevisor = hypervisor
target_hypevisor = node
return target_hypervisor
return target_node
# via total vCPUs
def findTargetHypervisorVCPUs(zk_conn, dom_uuid):
least_vcpus = 9999
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
vcpus = int(zkhandler.readdata(zk_conn, '/nodes/{}/vcpualloc'.format(hypervisor)))
node_list = getHypervisors(zk_conn, dom_uuid)
for node in node_list:
vcpus = int(zkhandler.readdata(zk_conn, '/nodes/{}/vcpualloc'.format(node)))
if vcpus < least_vcpus:
least_vcpus = vcpus
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node
# via total VMs
def findTargetHypervisorVMs(zk_conn, dom_uuid):
least_vms = 9999
target_hypervisor = None
target_node = None
hypervisor_list = getHypervisors(zk_conn, dom_uuid)
for hypervisor in hypervisor_list:
vms = int(zkhandler.readdata(zk_conn, '/nodes/{}/domainscount'.format(hypervisor)))
node_list = getHypervisors(zk_conn, dom_uuid)
for node in node_list:
vms = int(zkhandler.readdata(zk_conn, '/nodes/{}/domainscount'.format(node)))
if vms < least_vms:
least_vms = vms
target_hypervisor = hypervisor
target_node = node
return target_hypervisor
return target_node
#
# Fence thread entry function
#
def fenceNode(node_name, zk_conn, config):
def fenceNode(node_name, zk_conn, config, logger):
failcount = 0
# We allow exactly 3 saving throws for the host to come back online
while failcount < 3:
@ -494,13 +633,13 @@ def fenceNode(node_name, zk_conn, config):
# Is it still 'dead'
if node_daemon_state == 'dead':
failcount += 1
ansiiprint.echo('Node "{}" failed {} saving throws'.format(node_name, failcount), '', 'w')
logger.out('Node "{}" failed {} saving throws'.format(node_name, failcount), state='w')
# It changed back to something else so it must be alive
else:
ansiiprint.echo('Node "{}" passed a saving throw; canceling fence'.format(node_name), '', 'o')
logger.out('Node "{}" passed a saving throw; canceling fence'.format(node_name), state='o')
return
ansiiprint.echo('Fencing node "{}" via IPMI reboot signal'.format(node_name), '', 'e')
logger.out('Fencing node "{}" via IPMI reboot signal'.format(node_name), state='e')
# Get IPMI information
ipmi_hostname = zkhandler.readdata(zk_conn, '/nodes/{}/ipmihostname'.format(node_name))
@ -508,29 +647,35 @@ def fenceNode(node_name, zk_conn, config):
ipmi_password = zkhandler.readdata(zk_conn, '/nodes/{}/ipmipassword'.format(node_name))
# Shoot it in the head
fence_status = rebootViaIPMI(ipmi_hostname, ipmi_username, ipmi_password)
fence_status = rebootViaIPMI(ipmi_hostname, ipmi_username, ipmi_password, logger)
# Hold to ensure the fence takes effect
time.sleep(3)
# Force into secondary network state if needed
if node_name in config['coordinators'].split(','):
zkhandler.writedata(zk_conn, { '/nodes/{}/routerstate'.format(node_name): 'secondary' })
if zkhandler.readdata(zk_conn, '/primary_node') == node_name:
zkhandler.writedata(zk_conn, { '/primary_node': 'none' })
# If the fence succeeded and successful_fence is migrate
if fence_status == True and config['successful_fence'] == 'migrate':
migrateFromFencedHost(zk_conn, node_name)
migrateFromFencedNode(zk_conn, node_name, logger)
# If the fence failed and failed_fence is migrate
if fence_status == False and config['failed_fence'] == 'migrate' and config['suicide_intervals'] != '0':
migrateFromFencedHost(zk_conn, node_name)
migrateFromFencedNode(zk_conn, node_name, logger)
# Migrate hosts away from a fenced node
def migrateFromFencedHost(zk_conn, node_name):
ansiiprint.echo('Moving VMs from dead hypervisor "{}" to new hosts'.format(node_name), '', 'i')
def migrateFromFencedNode(zk_conn, node_name, logger):
logger.out('Moving VMs from dead node "{}" to new hosts'.format(node_name), state='i')
dead_node_running_domains = zkhandler.readdata(zk_conn, '/nodes/{}/runningdomains'.format(node_name)).split()
for dom_uuid in dead_node_running_domains:
target_hypervisor = findTargetHypervisor(zk_conn, 'mem', dom_uuid)
target_node = findTargetHypervisor(zk_conn, 'mem', dom_uuid)
ansiiprint.echo('Moving VM "{}" to hypervisor "{}"'.format(dom_uuid, target_hypervisor), '', 'i')
logger.out('Moving VM "{}" to node "{}"'.format(dom_uuid, target_node), state='i')
zkhandler.writedata(zk_conn, {
'/domains/{}/state'.format(dom_uuid): 'start',
'/domains/{}/hypervisor'.format(dom_uuid): target_hypervisor,
'/domains/{}/lasthypervisor'.format(dom_uuid): node_name
'/domains/{}/node'.format(dom_uuid): target_node,
'/domains/{}/lastnode'.format(dom_uuid): node_name
})
# Set node in flushed state for easy remigrating when it comes back
@ -539,12 +684,12 @@ def migrateFromFencedHost(zk_conn, node_name):
#
# Perform an IPMI fence
#
def rebootViaIPMI(ipmi_hostname, ipmi_user, ipmi_password):
def rebootViaIPMI(ipmi_hostname, ipmi_user, ipmi_password, logger):
ipmi_command = ['/usr/bin/ipmitool', '-I', 'lanplus', '-H', ipmi_hostname, '-U', ipmi_user, '-P', ipmi_password, 'chassis', 'power', 'reset']
ipmi_command_output = subprocess.run(ipmi_command, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
if ipmi_command_output.returncode == 0:
ansiiprint.echo('Successfully rebooted dead node', '', 'o')
logger.out('Successfully rebooted dead node', state='o')
return True
else:
ansiiprint.echo('Failed to reboot dead node', '', 'e')
logger.out('Failed to reboot dead node', state='e')
return False

101
router-daemon/pvcrd/VXNetworkInstance.py → node-daemon/pvcd/VXNetworkInstance.py
View File

@ -1,6 +1,6 @@
#!/usr/bin/env python3
# VXNetworkInstance.py - Class implementing a PVC VM network (router-side) and run by pvcrd
# VXNetworkInstance.py - Class implementing a PVC VM network and run by pvcd
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
@ -24,16 +24,18 @@ import os
import sys
from textwrap import dedent
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import daemon_lib.common as common
import pvcd.log as log
import pvcd.zkhandler as zkhandler
import pvcd.common as common
class VXNetworkInstance():
# Initialization function
def __init__ (self, vni, zk_conn, config, this_router):
def __init__ (self, vni, zk_conn, config, logger, this_node):
self.vni = vni
self.zk_conn = zk_conn
self.this_router = this_router
self.config = config
self.logger = logger
self.this_node = this_node
self.vni_dev = config['vni_dev']
self.old_description = None
@ -49,12 +51,12 @@ class VXNetworkInstance():
self.vxlan_nic = 'vxlan{}'.format(self.vni)
self.bridge_nic = 'br{}'.format(self.vni)
self.nftables_update_filename = '{}/update'.format(config['nftables_rules_dir'])
self.nftables_netconf_filename = '{}/networks/{}.nft'.format(config['nftables_rules_dir'], self.vni)
self.nftables_update_filename = '{}/update'.format(config['nft_dynamic_directory'])
self.nftables_netconf_filename = '{}/networks/{}.nft'.format(config['nft_dynamic_directory'], self.vni)
self.firewall_rules = []
self.dhcp_server_daemon = None
self.dnsmasq_hostsdir = '{}/{}'.format(config['dnsmasq_hosts_dir'], self.vni)
self.dnsmasq_hostsdir = '{}/{}'.format(config['dnsmasq_dynamic_directory'], self.vni)
self.dhcp_reservations = []
# Zookeper handlers for changed states
@ -102,7 +104,7 @@ class VXNetworkInstance():
if data and self.ip_gateway != data.decode('ascii'):
orig_gateway = self.ip_gateway
self.ip_gateway = data.decode('ascii')
if self.this_router.network_state == 'primary':
if self.this_node.router_state == 'primary':
if orig_gateway:
self.removeGatewayAddress()
self.createGatewayAddress()
@ -116,9 +118,9 @@ class VXNetworkInstance():
if data and self.dhcp_flag != data.decode('ascii'):
self.dhcp_flag = ( data.decode('ascii') == 'True' )
if self.dhcp_flag and self.this_router.network_state == 'primary':
if self.dhcp_flag and self.this_node.router_state == 'primary':
self.startDHCPServer()
elif self.this_router.network_state == 'primary':
elif self.this_node.router_state == 'primary':
self.stopDHCPServer()
@self.zk_conn.DataWatch('/networks/{}/dhcp_start'.format(self.vni))
@ -209,13 +211,12 @@ class VXNetworkInstance():
pass
def createNetwork(self):
ansiiprint.echo(
'Creating VNI {} device on interface {}'.format(
self.vni,
self.logger.out(
'Creating VXLAN device on interface {}'.format(
self.vni_dev
),
'',
'o'
prefix='VNI {}'.format(self.vni),
state='o'
)
common.run_os_command(
'ip link add {} type vxlan id {} dstport 4789 dev {}'.format(
@ -275,15 +276,14 @@ add rule inet filter input meta iifname {bridgenic} counter drop
pass
def createGatewayAddress(self):
if self.this_router.getnetworkstate() == 'primary':
ansiiprint.echo(
'Creating gateway {} on interface {} (VNI {})'.format(
if self.this_node.router_state == 'primary':
self.logger.out(
'Creating gateway {} on interface {}'.format(
self.ip_gateway,
self.bridge_nic,
self.vni
self.bridge_nic
),
'',
'o'
prefix='VNI {}'.format(self.vni),
state='o'
)
print('ip address add {}/{} dev {}'.format(
self.ip_gateway,
@ -307,14 +307,13 @@ add rule inet filter input meta iifname {bridgenic} counter drop
)
def startDHCPServer(self):
if self.this_router.getnetworkstate() == 'primary':
ansiiprint.echo(
'Starting dnsmasq DHCP server on interface {} (VNI {})'.format(
self.bridge_nic,
self.vni
if self.this_node.router_state == 'primary':
self.logger.out(
'Starting dnsmasq DHCP server on interface {}'.format(
self.bridge_nic
),
'',
'o'
prefix='VNI {}'.format(self.vni),
state='o'
)
# Create the network hostsdir
common.run_os_command(
@ -323,10 +322,10 @@ add rule inet filter input meta iifname {bridgenic} counter drop
)
)
# Recreate the environment we need for dnsmasq
pvcrd_config_file = os.environ['PVCRD_CONFIG_FILE']
pvcd_config_file = os.environ['PVCD_CONFIG_FILE']
dhcp_environment = {
'DNSMASQ_INTERFACE': self.bridge_nic,
'PVCRD_CONFIG_FILE': pvcrd_config_file
'PVCD_CONFIG_FILE': pvcd_config_file
}
# Define the dnsmasq config
dhcp_configuration = [
@ -343,7 +342,7 @@ add rule inet filter input meta iifname {bridgenic} counter drop
'--listen-address={}'.format(self.ip_gateway),
'--bind-interfaces',
'--leasefile-ro',
'--dhcp-script=/usr/share/pvc/pvcrd/dnsmasq-zookeeper-leases.py',
'--dhcp-script=/usr/share/pvc/pvcd/dnsmasq-zookeeper-leases.py',
'--dhcp-range={},{},4h'.format(self.dhcp_start, self.dhcp_end),
'--dhcp-lease-max=99',
'--dhcp-hostsdir={}'.format(self.dnsmasq_hostsdir),
@ -356,18 +355,16 @@ add rule inet filter input meta iifname {bridgenic} counter drop
'/usr/sbin/dnsmasq {}'.format(
' '.join(dhcp_configuration)
),
environment=dhcp_environment,
return_pid=True
environment=dhcp_environment
)
def removeNetwork(self):
ansiiprint.echo(
'Removing VNI {} device on interface {}'.format(
self.vni,
self.logger.out(
'Removing VNI device on interface {}'.format(
self.vni_dev
),
'',
'o'
prefix='VNI {}'.format(self.vni),
state='o'
)
common.run_os_command(
'ip link set {} down'.format(
@ -402,14 +399,13 @@ add rule inet filter input meta iifname {bridgenic} counter drop
pass
def removeGatewayAddress(self):
ansiiprint.echo(
'Removing gateway {} from interface {} (VNI {})'.format(
self.logger.out(
'Removing gateway {} from interface {}'.format(
self.ip_gateway,
self.bridge_nic,
self.vni
self.bridge_nic
),
'',
'o'
prefix='VNI {}'.format(self.vni),
state='o'
)
common.run_os_command(
'ip address delete {}/{} dev {}'.format(
@ -421,12 +417,11 @@ add rule inet filter input meta iifname {bridgenic} counter drop
def stopDHCPServer(self):
if self.dhcp_server_daemon:
ansiiprint.echo(
'Stopping dnsmasq DHCP server on interface {} (VNI {})'.format(
self.bridge_nic,
self.vni
self.logger.out(
'Stopping dnsmasq DHCP server on interface {}'.format(
self.bridge_nic
),
'',
'o'
prefix='VNI {}'.format(self.vni),
state='o'
)
self.dhcp_server_daemon.signal('term')

0
network-daemon/pvcnd/__init__.py → node-daemon/pvcd/__init__.py
View File

83
node-daemon/pvcd/common.py Normal file
View File

@ -0,0 +1,83 @@
#!/usr/bin/env python3
# common.py - PVC daemon function library, common fuctions
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import subprocess
import threading
import signal
import os
import time
import pvcd.log as log
class OSDaemon(object):
def __init__(self, command, environment):
self.proc = subprocess.Popen(
command,
env=environment,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
def signal(self, sent_signal):
signal_map = {
'hup': signal.SIGHUP,
'int': signal.SIGINT,
'term': signal.SIGTERM
}
self.proc.send_signal(signal_map[sent_signal])
def run_os_daemon(command_string, environment=None):
command = command_string.split()
print(' '.join(command))
daemon = OSDaemon(command, environment)
return daemon
# Run a oneshot command, optionally without blocking
def run_os_command(command_string, background=False, environment=None):
command = command_string.split()
if background:
def runcmd():
subprocess.run(
command,
env=environment,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
thread = threading.Thread(target=runcmd, args=())
thread.start()
return 0, None, None
else:
command_output = subprocess.run(
command,
env=environment,
stdout=subprocess.PIPE,
stderr=subprocess.PIPE,
)
return command_output.returncode, command_output.stdout.decode('ascii'), command_output.stderr.decode('ascii')
# Reload the firewall rules of the system
def reload_firewall_rules(rules_dir):
log.echo('Updating firewall rules', '', 'o')
rules_file = '{}/base.nft'.format(rules_dir)
retcode, stdout, stderr = run_os_command('/usr/sbin/nft -f {}'.format(rules_file))
if retcode != 0:
log.echo('Failed to reload rules: {}'.format(stderr), '', 'e')

10
router-daemon/pvcrd/dnsmasq-zookeeper-leases.py → node-daemon/pvcd/dnsmasq-zookeeper-leases.py
View File

@ -41,19 +41,19 @@ def get_client_id():
def connect_zookeeper():
# We expect the environ to contain the config file
try:
pvcrd_config_file = os.environ['PVCRD_CONFIG_FILE']
pvcd_config_file = os.environ['PVCD_CONFIG_FILE']
except:
# Default place
pvcrd_config_file = '/etc/pvc/pvcrd.conf'
pvcd_config_file = '/etc/pvc/pvcd.conf'
o_config = configparser.ConfigParser()
o_config.read(pvcrd_config_file)
o_config.read(pvcd_config_file)
try:
zk_host = o_config['default']['zookeeper']
zk_host = o_config['default']['coordinators']
except:
try:
zk_host = o_config[socket.gethostname()]['zookeeper']
zk_host = o_config[socket.gethostname()]['coordinators']
except:
exit(1)

100
node-daemon/pvcd/log.py Normal file
View File

@ -0,0 +1,100 @@
#!/usr/bin/env python3
# log.py - Output (stdout + logfile) functions
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import datetime
class Logger(object):
# Define a logger class for a daemon instance
# Keeps record of where to log, and is passed messages which are
# formatted in various ways based off secondary characteristics.
# ANSII colours for output
fmt_red = '\033[91m'
fmt_blue = '\033[94m'
fmt_cyan = '\033[96m'
fmt_green = '\033[92m'
fmt_yellow = '\033[93m'
fmt_purple = '\033[95m'
fmt_bold = '\033[1m'
fmt_end = '\033[0m'
# Initialization of instance
def __init__(self, config):
self.config = config
if self.config['file_logging'] == 'True':
self.logfile = self.config['log_directory'] + '/pvc.log'
# We open the logfile for the duration of our session, but have a hup function
self.writer = open(self.logfile, 'a', buffering=1)
self.last_colour = self.fmt_cyan
# Provide a hup function to close and reopen the writer
def hup(self):
self.writer.close()
self.writer = open(self.logfile, 'a', buffering=0)
# Output function
def out(self, message, state='', prefix=''):
# Get the date
date = '{} - '.format(datetime.datetime.now().strftime('%Y/%m/%d %H:%M:%S.%f'))
endc = Logger.fmt_end
# Determine the formatting
# OK
if state == 'o':
colour = Logger.fmt_green
prompt = '>>> '
# Error
elif state == 'e':
colour = Logger.fmt_red
prompt = '>>> '
# Warning
elif state == 'w':
colour = Logger.fmt_yellow
prompt = '>>> '
# Tick
elif state == 't':
colour = Logger.fmt_purple
prompt = '>>> '
# Information
elif state == 'i':
colour = Logger.fmt_blue
prompt = '>>> '
# Startup
elif state == 's':
colour = Logger.fmt_cyan
prompt = '>>> '
# Continuation
else:
date = ''
colour = self.last_colour
prompt = '>>> '
# Append space to prefix
if prefix != '':
prefix = prefix + ' - '
message = colour + prompt + endc + date + prefix + message
print(message)
if self.config['file_logging'] == 'True':
self.writer.write(message + '\n')
self.last_colour = colour

81
node-daemon/pvcd/zkhandler.py Normal file
View File

@ -0,0 +1,81 @@
#!/usr/bin/env python3
# zkhandler.py - Secure versioned ZooKeeper updates
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import kazoo.client
import pvcd.log as log
# Child list function
def listchildren(zk_conn, key):
children = zk_conn.get_children(key)
return children
# Key deletion function
def delete(zk_conn, key):
zk_conn.delete(key, recursive=True)
# Data read function
def readdata(zk_conn, key):
data_raw = zk_conn.get(key)
data = data_raw[0].decode('ascii')
meta = data_raw[1]
return data
# Data write function
def writedata(zk_conn, kv):
# Start up a transaction
zk_transaction = zk_conn.transaction()
# Proceed one KV pair at a time
for key in sorted(kv):
data = kv[key]
if not data:
data = ''
# Check if this key already exists or not
if not zk_conn.exists(key):
# We're creating a new key
zk_transaction.create(key, data.encode('ascii'))
else:
# We're updating a key with version validation
orig_data = zk_conn.get(key)
version = orig_data[1].version
# Set what we expect the new version to be
new_version = version + 1
# Update the data
zk_transaction.set_data(key, data.encode('ascii'))
# Set up the check
try:
zk_transaction.check(key, new_version)
except TypeError:
print('Zookeeper key "{}" does not match expected version'.format(key))
return False
# Commit the transaction
try:
zk_transaction.commit()
return True
except Exception:
return False

33
router-daemon/pvcrd.conf.sample
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@ -1,33 +0,0 @@
# pvcrd cluster configuration file example
#
# This configuration file specifies details for this node in PVC. Multiple host
# blocks can be added but only the one matching the current system hostname will
# be used by the local daemon. Default values apply to all hosts for any value
# not specifically overridden.
#
# The following values are required for each host or in a default section:
# zookeeper: the IP+port of the Zookeper instance (defaults to 127.0.0.1:2181)
# keepalive_interval: the interval between keepalives and for dead node timeout (defaults to 5)
# fence_intervals: the number of keepalive_intervals without Zookeeper contact before this node
# will consider another node dead and fence it (defaults to 6, i.e. 30s)
# vni_dev: the lower-level network device to bind VNI to
# vni_dev_ip: the IP address (CIDR) of the lower-level network device, used
# by FRR to communicate with the route reflectors and pass routes
# for VNI interfaces
# ipmi_hostname: the IPMI hostname for fencing (defaults to <shortname>-lom.<domain>)
# ipmi_username: username to connect to IPMI
# ipmi_password: password to connect to IPMI
#
# Copy this example to /etc/pvc/pvcrd.conf and edit to your needs
[default]
zookeeper = 127.0.0.1:2181
keepalive_interval = 5
fence_intervals = 6
[myhost]
vni_dev = ens4
vni_dev_ip = 10.255.0.1/24
ipmi_hostname = myhost-lom
ipmi_username = username
ipmi_password = password

16
router-daemon/pvcrd.service
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@ -1,16 +0,0 @@
# Parallel Virtual Cluster router daemon unit file
[Unit]
Description = Parallel Virtual Cluster router daemon
After = network-online.target frr.service
[Service]
Type = simple
WorkingDirectory = /usr/share/pvc
Environment = PYTHONUNBUFFERED=true
Environment = PVCRD_CONFIG_FILE=/etc/pvc/pvcrd.conf
ExecStart = /usr/share/pvc/pvcrd.py
KillSignal = SIGINT
Restart = on-failure
[Install]
WantedBy = multi-user.target

348
router-daemon/pvcrd/Daemon.py
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@ -1,348 +0,0 @@
#!/usr/bin/env python3
# Daemon.py - PVC hypervisor router daemon
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import kazoo.client
import sys
import os
import socket
import psutil
import subprocess
import time
import configparser
import signal
import atexit
import apscheduler.schedulers.background
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import daemon_lib.common as common
import pvcrd.RouterInstance as RouterInstance
import pvcrd.VXNetworkInstance as VXNetworkInstance
print(ansiiprint.bold() + "pvcrd - Parallel Virtual Cluster router daemon" + ansiiprint.end())
# Set sysctl to enable routing before we do anything else
common.run_os_command('sysctl net.ipv4.ip_forward=1')
common.run_os_command('sysctl net.ipv4.conf.all.send_redirects=1')
common.run_os_command('sysctl net.ipv4.conf.all.rp_filter=0')
common.run_os_command('sysctl net.ipv4.conf.default.rp_filter=0')
common.run_os_command('sysctl net.ipv4.conf.all.accept_source_route=1')
common.run_os_command('sysctl net.ipv4.conf.all.accept_source_route=1')
common.run_os_command('sysctl net.ipv6.ip_forward=1')
common.run_os_command('sysctl net.ipv6.conf.all.rp_filter=0')
common.run_os_command('sysctl net.ipv6.conf.default.rp_filter=0')
common.run_os_command('sysctl net.ipv6.conf.all.send_redirects=1')
common.run_os_command('sysctl net.ipv6.conf.all.accept_source_route=1')
# Get the config file variable from the environment
try:
pvcrd_config_file = os.environ['PVCRD_CONFIG_FILE']
except:
print('ERROR: The "PVCRD_CONFIG_FILE" environment variable must be set before starting pvcrd.')
exit(1)
myhostname = socket.gethostname()
myshorthostname = myhostname.split('.', 1)[0]
mynetworkname = ''.join(myhostname.split('.', 1)[1:])
# Config values dictionary
config_values = [
'zookeeper',
'keepalive_interval',
'keepalive_interval',
'fence_intervals',
'vni_dev',
'vni_dev_ip',
'ipmi_hostname',
'ipmi_username',
'ipmi_password'
]
def readConfig(pvcrd_config_file, myhostname):
print('Loading configuration from file {}'.format(pvcrd_config_file))
o_config = configparser.ConfigParser()
o_config.read(pvcrd_config_file)
config = {}
config['pvcrd_config_file'] = pvcrd_config_file
try:
entries = o_config[myhostname]
except:
try:
entries = o_config['default']
except Exception as e:
print('ERROR: Config file is not valid!')
exit(1)
for entry in config_values:
try:
config[entry] = entries[entry]
except:
try:
config[entry] = o_config['default'][entry]
except:
print('ERROR: Config file missing required value "{}" for this host!'.format(entry))
exit(1)
# Handle an empty ipmi_hostname
if config['ipmi_hostname'] == '':
config['ipmi_hostname'] = myshorthostname + '-lom.' + mynetworkname
return config
# Get config
config = readConfig(pvcrd_config_file, myhostname)
# Add some static config elements
config['nftables_rules_dir'] = '/var/lib/pvc/nftables'
config['dnsmasq_hosts_dir'] = '/var/lib/pvc/dnsmasq'
# Set up our VNI interface
vni_dev = config['vni_dev']
vni_dev_ip = config['vni_dev_ip']
print('Setting up VNI interface {} with IP {}'.format(vni_dev, vni_dev_ip))
common.run_os_command('ip link set {} up'.format(vni_dev))
common.run_os_command('ip address add {} dev {}'.format(vni_dev_ip, vni_dev))
# Connect to local zookeeper
zk_conn = kazoo.client.KazooClient(hosts=config['zookeeper'])
try:
print('Connecting to Zookeeper instance at {}'.format(config['zookeeper']))
zk_conn.start()
except:
print('ERROR: Failed to connect to Zookeeper')
exit(1)
# Handle zookeeper failures
def zk_listener(state):
global zk_conn, update_timer
if state == kazoo.client.KazooState.SUSPENDED:
ansiiprint.echo('Connection to Zookeeper lost; retrying', '', 'e')
# Stop keepalive thread
stopKeepaliveTimer(update_timer)
while True:
_zk_conn = kazoo.client.KazooClient(hosts=config['zookeeper'])
try:
_zk_conn.start()
zk_conn = _zk_conn
break
except:
time.sleep(1)
elif state == kazoo.client.KazooState.CONNECTED:
ansiiprint.echo('Connection to Zookeeper started', '', 'o')
# Start keepalive thread
update_timer = createKeepaliveTimer()
else:
pass
zk_conn.add_listener(zk_listener)
# Cleanup function
def cleanup():
ansiiprint.echo('Cleaning up', '', 'e')
# Stop keepalive thread
stopKeepaliveTimer(update_timer)
# Set stop state in Zookeeper
zkhandler.writedata(zk_conn, {'/routers/{}/daemonstate'.format(myhostname): 'stop'})
if this_router.name == this_router.primary_router:
zkhandler.writedata(zk_conn, {'/routers': 'none'})
# Wait for everything to flush
time.sleep(3)
# Close the Zookeeper connection
try:
zk_conn.stop()
zk_conn.close()
except:
pass
ansiiprint.echo('Terminating daemon', '', 'e')
atexit.register(cleanup)
# Gather useful data about our host for staticdata
# Static data format: 'cpu_count', 'arch', 'os', 'kernel'
staticdata = []
staticdata.append(str(psutil.cpu_count()))
staticdata.append(subprocess.run(['uname', '-r'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
staticdata.append(subprocess.run(['uname', '-o'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
staticdata.append(subprocess.run(['uname', '-m'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
# Print static data on start
print('{0}Router hostname:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), myhostname))
print('{0}IPMI hostname:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), config['ipmi_hostname']))
print('{0}Machine details:{1}'.format(ansiiprint.bold(), ansiiprint.end()))
print(' {0}CPUs:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[0]))
print(' {0}Arch:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[3]))
print(' {0}OS:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[2]))
print(' {0}Kernel:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[1]))
# Check if our router exists in Zookeeper, and create it if not
if zk_conn.exists('/routers/{}'.format(myhostname)):
print("Router is " + ansiiprint.green() + "present" + ansiiprint.end() + " in Zookeeper")
# Update static data just in case it's changed
zkhandler.writedata(zk_conn, { '/routers/{}/staticdata'.format(myhostname): ' '.join(staticdata) })
else:
print("Router is " + ansiiprint.red() + "absent" + ansiiprint.end() + " in Zookeeper; adding new router")
keepalive_time = int(time.time())
transaction = zk_conn.transaction()
transaction.create('/routers/{}'.format(myhostname), 'hypervisor'.encode('ascii'))
# Basic state information
transaction.create('/routers/{}/daemonstate'.format(myhostname), 'stop'.encode('ascii'))
transaction.create('/routers/{}/networkstate'.format(myhostname), 'secondary'.encode('ascii'))
transaction.create('/routers/{}/staticdata'.format(myhostname), ' '.join(staticdata).encode('ascii'))
transaction.create('/routers/{}/cpuload'.format(myhostname), '0'.encode('ascii'))
# Keepalives and fencing information
transaction.create('/routers/{}/keepalive'.format(myhostname), str(keepalive_time).encode('ascii'))
transaction.create('/routers/{}/ipmihostname'.format(myhostname), config['ipmi_hostname'].encode('ascii'))
transaction.create('/routers/{}/ipmiusername'.format(myhostname), config['ipmi_username'].encode('ascii'))
transaction.create('/routers/{}/ipmipassword'.format(myhostname), config['ipmi_password'].encode('ascii'))
transaction.commit()
# Check that the primary key exists, and create it with us as master if not
current_primary = zkhandler.readdata(zk_conn, '/routers')
if current_primary:
print('Current primary router is {}"{}"{}.'.format(ansiiprint.blue(), current_primary, ansiiprint.end()))
else:
print('No primary router key found; creating with us as primary.')
zkhandler.writedata(zk_conn, { '/routers': myhostname })
zkhandler.writedata(zk_conn, { '/routers/{}/daemonstate'.format(myhostname): 'init' })
t_router = dict()
s_network = dict()
router_list = []
network_list = []
# Create our config dirs
common.run_os_command(
'/bin/mkdir --parents {}/networks'.format(
config['nftables_rules_dir']
)
)
common.run_os_command(
'/bin/mkdir --parents {}/static'.format(
config['nftables_rules_dir']
)
)
common.run_os_command(
'/bin/mkdir --parents {}'.format(
config['dnsmasq_hosts_dir']
)
)
# Set up the basic features of the nftables firewall
nftables_base_rules = """# Base rules
flush ruleset
# Add the filter table and chains
add table inet filter
add chain inet filter forward {{ type filter hook forward priority 0; }}
add chain inet filter input {{ type filter hook input priority 0; }}
# Include static rules and network rules
include "{rulesdir}/static/*"
include "{rulesdir}/networks/*"
""".format(
rulesdir=config['nftables_rules_dir']
)
# Write the basic firewall config
print(nftables_base_rules)
nftables_base_filename = '{}/base.nft'.format(config['nftables_rules_dir'])
nftables_update_filename = '{}/update'.format(config['nftables_rules_dir'])
with open(nftables_base_filename, 'w') as nfbasefile:
nfbasefile.write(nftables_base_rules)
open(nftables_update_filename, 'a').close()
#
# Router instances
#
@zk_conn.ChildrenWatch('/routers')
def updaterouters(new_router_list):
global router_list
router_list = new_router_list
print(ansiiprint.blue() + 'Router list: ' + ansiiprint.end() + '{}'.format(' '.join(router_list)))
for router in router_list:
if router in t_router:
t_router[router].updaterouterlist(t_router)
else:
t_router[router] = RouterInstance.RouterInstance(myhostname, router, t_router, s_network, zk_conn, config)
# Set up our update function
this_router = t_router[myhostname]
update_zookeeper = this_router.update_zookeeper
#
# Network instances
#
@zk_conn.ChildrenWatch('/networks')
def updatenetworks(new_network_list):
global network_list
for network in new_network_list:
if not network in s_network:
s_network[network] = VXNetworkInstance.VXNetworkInstance(network, zk_conn, config, t_router[myhostname])
if this_router.network_state == 'primary':
s_network[network].createGatewayAddress()
s_network[network].startDHCPServer()
for network in network_list:
if not network in new_network_list:
if this_router.network_state == 'primary':
s_network[network].stopDHCPServer()
s_network[network].removeGatewayAddress()
s_network[network].removeFirewall()
s_network[network].removeNetwork()
del(s_network[network])
network_list = new_network_list
for router in router_list:
if router in t_router:
t_router[router].updatenetworklist(s_network)
print(ansiiprint.blue() + 'Network list: ' + ansiiprint.end() + '{}'.format(' '.join(network_list)))
# Create timer to update this router in Zookeeper
def createKeepaliveTimer():
interval = int(config['keepalive_interval'])
ansiiprint.echo('Starting keepalive timer ({} second interval)'.format(interval), '', 'o')
update_timer = apscheduler.schedulers.background.BackgroundScheduler()
update_timer.add_job(update_zookeeper, 'interval', seconds=interval)
update_timer.start()
return update_timer
def stopKeepaliveTimer(update_timer):
ansiiprint.echo('Stopping keepalive timer', '', 'c')
update_timer.shutdown()
# Start keepalive thread
update_timer = createKeepaliveTimer()
update_zookeeper()
# Tick loop
while True:
try:
time.sleep(0.5)
except:
break

291
router-daemon/pvcrd/RouterInstance.py
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@ -1,291 +0,0 @@
#!/usr/bin/env python3
# RouterInstance.py - Class implementing a PVC router and run by pvcrd
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import os
import sys
import psutil
import socket
import time
import threading
import subprocess
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import daemon_lib.common as common
class RouterInstance():
# Initialization function
def __init__(self, this_router, name, t_router, s_network, zk_conn, config):
# Passed-in variables on creation
self.zk_conn = zk_conn
self.config = config
self.this_router = this_router
self.name = name
self.primary_router = None
self.daemon_state = 'stop'
self.network_state = 'secondary'
self.t_router = t_router
self.primary_router_list = []
self.secondary_router_list = []
self.inactive_router_list = []
self.s_network = s_network
self.network_list = []
self.ipmi_hostname = self.config['ipmi_hostname']
# Zookeeper handlers for changed states
@zk_conn.DataWatch('/routers/{}/daemonstate'.format(self.name))
def watch_router_daemonstate(data, stat, event=''):
try:
data = data.decode('ascii')
except AttributeError:
data = 'stop'
if data != self.daemon_state:
self.daemon_state = data
@zk_conn.DataWatch('/routers/{}/networkstate'.format(self.name))
def watch_router_networkstate(data, stat, event=''):
try:
data = data.decode('ascii')
except AttributeError:
data = 'secondary'
if data != self.network_state:
self.network_state = data
if self.name == self.this_router:
if self.network_state == 'primary':
self.become_primary()
else:
self.become_secondary()
@zk_conn.DataWatch('/routers')
def watch_primary_router(data, stat, event=''):
try:
data = data.decode('ascii')
except AttributeError:
data = 'none'
# toggle state management of this router
if data != self.primary_router:
if data == 'none':
if self.name == self.this_router:
if self.daemon_state == 'run' and self.network_state != 'primary':
# Contend for primary
ansiiprint.echo('Contending for primary', '', 'i')
zkhandler.writedata(self.zk_conn, {
'/routers': self.name
})
elif data == self.this_router:
if self.name == self.this_router:
zkhandler.writedata(self.zk_conn, {
'/routers/{}/networkstate'.format(self.name): 'primary',
})
self.primary_router = data
else:
if self.name == self.this_router:
zkhandler.writedata(self.zk_conn, {
'/routers/{}/networkstate'.format(self.name): 'secondary',
})
self.primary_router = data
# Get value functions
def getname(self):
return self.name
def getdaemonstate(self):
return self.daemon_state
def getnetworkstate(self):
return self.network_state
def getnetworklist(self):
return self.network_list
# Update value functions
def updaterouterlist(self, t_router):
self.t_router = t_router
def updatenetworklist(self, s_network):
self.s_network = s_network
network_list = []
for network in s_network:
network_list.append(s_network[network].getvni())
self.network_list = network_list
def become_secondary(self):
ansiiprint.echo('Setting router {} to secondary state'.format(self.name), '', 'i')
ansiiprint.echo('Network list: {}'.format(', '.join(self.network_list)), '', 'c')
time.sleep(0.5)
for network in self.s_network:
self.s_network[network].stopDHCPServer()
self.s_network[network].removeGatewayAddress()
def become_primary(self):
ansiiprint.echo('Setting router {} to primary state.'.format(self.name), '', 'i')
ansiiprint.echo('Network list: {}'.format(', '.join(self.network_list)), '', 'c')
for network in self.s_network:
self.s_network[network].createGatewayAddress()
self.s_network[network].startDHCPServer()
def update_zookeeper(self):
# Get past state and update if needed
past_state = zkhandler.readdata(self.zk_conn, '/routers/{}/daemonstate'.format(self.name))
if past_state != 'run':
self.daemon_state = 'run'
zkhandler.writedata(self.zk_conn, { '/routers/{}/daemonstate'.format(self.name): 'run' })
else:
self.daemon_state = 'run'
# Ensure the master key is properly set at a keepalive
if self.name == self.this_router:
if self.network_state == 'primary':
if zkhandler.readdata(self.zk_conn, '/routers') == 'none':
zkhandler.writedata(self.zk_conn, {'/routers': self.name})
# Set our information in zookeeper
cpuload = os.getloadavg()[0]
keepalive_time = int(time.time())
try:
zkhandler.writedata(self.zk_conn, {
'/routers/{}/keepalive'.format(self.name): str(keepalive_time),
'/routers/{}/cpuload'.format(self.name): str(cpuload),
})
except:
ansiiprint.echo('Failed to set keepalive data', '', 'e')
return
# Display router information to the terminal
ansiiprint.echo('{}{} keepalive{}'.format(ansiiprint.purple(), self.name, ansiiprint.end()), '', 't')
ansiiprint.echo('{0}Networks count:{1} {2} {0}Load average:{1} {3}'.format(ansiiprint.bold(), ansiiprint.end(), len(self.network_list), cpuload), '', 'c')
# Update our local router lists
for router_name in self.t_router:
try:
router_daemon_state = zkhandler.readdata(self.zk_conn, '/routers/{}/daemonstate'.format(router_name))
router_network_state = zkhandler.readdata(self.zk_conn, '/routers/{}/networkstate'.format(router_name))
router_keepalive = int(zkhandler.readdata(self.zk_conn, '/routers/{}/keepalive'.format(router_name)))
except:
router_daemon_state = 'unknown'
router_network_state = 'unknown'
router_keepalive = 0
# Handle deadtime and fencng if needed
# (A router is considered dead when its keepalive timer is >6*keepalive_interval seconds
# out-of-date while in 'start' state)
router_deadtime = int(time.time()) - ( int(self.config['keepalive_interval']) * int(self.config['fence_intervals']) )
if router_keepalive < router_deadtime and router_daemon_state == 'run':
ansiiprint.echo('Router {} seems dead - starting monitor for fencing'.format(router_name), '', 'w')
zkhandler.writedata(self.zk_conn, { '/routers/{}/daemonstate'.format(router_name): 'dead' })
fence_thread = threading.Thread(target=fenceRouter, args=(router_name, self.zk_conn, self.config), kwargs={})
fence_thread.start()
# Update the arrays
if router_daemon_state == 'run' and router_network_state == 'primary' and router_name not in self.primary_router_list:
self.primary_router_list.append(router_name)
try:
self.secondary_router_list.remove(router_name)
except ValueError:
pass
try:
self.inactive_router_list.remove(router_name)
except ValueError:
pass
if router_daemon_state == 'run' and router_network_state == 'secondary' and router_name not in self.secondary_router_list:
self.secondary_router_list.append(router_name)
try:
self.primary_router_list.remove(router_name)
except ValueError:
pass
try:
self.inactive_router_list.remove(router_name)
except ValueError:
pass
if router_daemon_state != 'run' and router_name not in self.inactive_router_list:
self.inactive_router_list.append(router_name)
try:
self.primary_router_list.remove(router_name)
except ValueError:
pass
try:
self.secondary_router_list.remove(router_name)
except ValueError:
pass
# Display cluster information to the terminal
ansiiprint.echo('{}Cluster status{}'.format(ansiiprint.purple(), ansiiprint.end()), '', 't')
ansiiprint.echo('{}Primary router:{} {}'.format(ansiiprint.bold(), ansiiprint.end(), ' '.join(self.primary_router_list)), '', 'c')
ansiiprint.echo('{}Secondary router:{} {}'.format(ansiiprint.bold(), ansiiprint.end(), ' '.join(self.secondary_router_list)), '', 'c')
ansiiprint.echo('{}Inactive routers:{} {}'.format(ansiiprint.bold(), ansiiprint.end(), ' '.join(self.inactive_router_list)), '', 'c')
# Reload firewall rules if needed
if os.path.isfile('{}/update'.format(self.config['nftables_rules_dir'])):
common.reload_firewall_rules(self.config['nftables_rules_dir'])
os.remove('{}/update'.format(self.config['nftables_rules_dir']))
#
# Fence thread entry function
#
def fenceRouter(router_name, zk_conn, config):
failcount = 0
# We allow exactly 3 saving throws for the host to come back online
while failcount < 3:
# Wait 5 seconds
time.sleep(5)
# Get the state
router_daemon_state = zkhandler.readdata(zk_conn, '/routers/{}/daemonstate'.format(router_name))
# Is it still 'dead'
if router_daemon_state == 'dead':
failcount += 1
ansiiprint.echo('Router "{}" failed {} saving throws'.format(router_name, failcount), '', 'w')
# It changed back to something else so it must be alive
else:
ansiiprint.echo('Router "{}" passed a saving throw; canceling fence'.format(router_name), '', 'o')
return
ansiiprint.echo('Fencing router "{}" via IPMI reboot signal'.format(router_name), '', 'e')
# Get IPMI information
ipmi_hostname = zkhandler.readdata(zk_conn, '/routers/{}/ipmihostname'.format(router_name))
ipmi_username = zkhandler.readdata(zk_conn, '/routers/{}/ipmiusername'.format(router_name))
ipmi_password = zkhandler.readdata(zk_conn, '/routers/{}/ipmipassword'.format(router_name))
# Shoot it in the head
fence_status = rebootViaIPMI(ipmi_hostname, ipmi_username, ipmi_password)
# Hold to ensure the fence takes effect
time.sleep(3)
# Set router in secondary state
zkhandler.writedata(zk_conn, { '/routers/{}/networkstate'.format(router_name): 'secondary' })
#
# Perform an IPMI fence
#
def rebootViaIPMI(ipmi_hostname, ipmi_user, ipmi_password):
retcode = common.run_os_command('ipmitool -I lanplus -H {} -U {} -P {} chassis power reset'.format(
ipmi_hostname, ipmi_user, ipmi_password
))
if retcode == 0:
ansiiprint.echo('Successfully rebooted dead router', '', 'o')
return True
else:
ansiiprint.echo('Failed to reboot dead router', '', 'e')
return False

0
router-daemon/pvcrd/__init__.py
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43
virtualization-daemon/pvcvd.conf.sample
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@ -1,43 +0,0 @@
# pvcvd cluster configuration file example
#
# This configuration file specifies details for this node in PVC. Multiple host
# blocks can be added but only the one matching the current system hostname will
# be used by the local daemon. Default values apply to all hosts for any value
# not specifically overridden.
#
# The following values are required for each host or in a default section:
# zookeeper: the IP+port of the Zookeper instance (defaults to 127.0.0.1:2181)
# keepalive_interval: the interval between keepalives and for dead node timeout (defaults to 5)
# fence_intervals: the number of keepalive_intervals without Zookeeper contact before this node
# will consider another node dead and fence it (defaults to 6, i.e. 30s)
# suicide_intervals: the number of keepalive_intervals without Zookeeper contact before this
# node will consider itself failed and terminate all running VMs (defaults
# to 0, i.e. disabled); should be less than "fence_intervals"
# successful_fence: the action to take on a successful fencing operation; can be "none" or
# "migrate" (defaults to "migrate")
# failed_fence: the action to take on a failed fencing operation; can be "none" or "migrate"
# (defaults to "none"); "migrate" requires "suicide_intervals" to be set)
# NOTE: POTENTIALLY DANGEROUS - see README for details
# migration_target_selector: the method to use to select target hypervisor nodes during a
# flush action; can be "mem", "load", "vcpus", or "vms" (defaults
# to "mem"); the best choice based on this field is selected for
# each VM to be migrated
# ipmi_hostname: the IPMI hostname for fencing (defaults to <shortname>-lom.<domain>)
# ipmi_username: username to connect to IPMI
# ipmi_password: password to connect to IPMI
#
# Copy this example to /etc/pvc/pvcd.conf and edit to your needs
[default]
zookeeper = 127.0.0.1:2181
keepalive_interval = 5
fence_intervals = 6
suicide_intervals = 0
successful_fence = migrate
failed_fence = none
migration_target_selector = mem
[myhost]
ipmi_username = admin
ipmi_password = admin
ipmi_hostname = myhost-lom

23
virtualization-daemon/pvcvd.py
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@ -1,23 +0,0 @@
#!/usr/bin/env python3
# pvcvd.py - Virtualization daemon startup stub
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import pvcvd.Daemon

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virtualization-daemon/pvcvd/Daemon.py
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@ -1,273 +0,0 @@
#!/usr/bin/env python3
# Daemon.py - PVC hypervisor virtualization daemon
# Part of the Parallel Virtual Cluster (PVC) system
#
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <https://www.gnu.org/licenses/>.
#
###############################################################################
import kazoo.client
import libvirt
import sys
import os
import signal
import socket
import psutil
import subprocess
import uuid
import time
import configparser
import apscheduler.schedulers.background
import daemon_lib.ansiiprint as ansiiprint
import daemon_lib.zkhandler as zkhandler
import pvcvd.VMInstance as VMInstance
import pvcvd.NodeInstance as NodeInstance
print(ansiiprint.bold() + "pvcvd - Parallel Virtual Cluster virtualization daemon" + ansiiprint.end())
# Get the config file variable from the environment
try:
pvcvd_config_file = os.environ['PVCVD_CONFIG_FILE']
except:
print('ERROR: The "PVCVD_CONFIG_FILE" environment variable must be set before starting pvcvd.')
exit(1)
myhostname = socket.gethostname()
myshorthostname = myhostname.split('.', 1)[0]
mydomainname = ''.join(myhostname.split('.', 1)[1:])
# Config values dictionary
config_values = [
'zookeeper',
'keepalive_interval',
'fence_intervals',
'suicide_intervals',
'successful_fence',
'failed_fence',
'migration_target_selector',
'ipmi_hostname',
'ipmi_username',
'ipmi_password'
]
def readConfig(pvcvd_config_file, myhostname):
print('Loading configuration from file {}'.format(pvcvd_config_file))
o_config = configparser.ConfigParser()
o_config.read(pvcvd_config_file)
config = {}
try:
entries = o_config[myhostname]
except:
try:
entries = o_config['default']
except Exception as e:
print('ERROR: Config file is not valid!')
exit(1)
for entry in config_values:
try:
config[entry] = entries[entry]
except:
try:
config[entry] = o_config['default'][entry]
except:
print('ERROR: Config file missing required value "{}" for this host!'.format(entry))
exit(1)
# Handle an empty ipmi_hostname
if config['ipmi_hostname'] == '':
config['ipmi_hostname'] = myshorthostname + '-lom.' + mydomainname
return config
# Get config
config = readConfig(pvcvd_config_file, myhostname)
# Check that libvirtd is listening TCP
libvirt_check_name = "qemu+tcp://127.0.0.1:16509/system"
try:
print('Connecting to Libvirt instance at {}'.format(libvirt_check_name))
lv_conn = libvirt.open(libvirt_check_name)
if lv_conn == None:
raise
except:
print('ERROR: Failed to open local libvirt connection via TCP; required for PVC!')
exit(1)
lv_conn.close()
# Connect to local zookeeper
zk_conn = kazoo.client.KazooClient(hosts=config['zookeeper'])
try:
print('Connecting to Zookeeper instance at {}'.format(config['zookeeper']))
zk_conn.start()
except:
print('ERROR: Failed to connect to Zookeeper')
exit(1)
# Handle zookeeper failures
def zk_listener(state):
global zk_conn, update_timer
if state == kazoo.client.KazooState.SUSPENDED:
ansiiprint.echo('Connection to Zookeeper lost; retrying', '', 'e')
# Stop keepalive thread
stopKeepaliveTimer(update_timer)
while True:
_zk_conn = kazoo.client.KazooClient(hosts=config['zookeeper'])
try:
_zk_conn.start()
zk_conn = _zk_conn
break
except:
time.sleep(1)
elif state == kazoo.client.KazooState.CONNECTED:
ansiiprint.echo('Connection to Zookeeper started', '', 'o')
# Start keepalive thread
update_timer = createKeepaliveTimer()
else:
pass
zk_conn.add_listener(zk_listener)
# Cleanup function
def cleanup(signum, frame):
ansiiprint.echo('Terminating daemon', '', 'e')
# Set stop state in Zookeeper
zkhandler.writedata(zk_conn, { '/nodes/{}/daemonstate'.format(myhostname): 'stop' })
# Close the Zookeeper connection
try:
zk_conn.stop()
zk_conn.close()
except:
pass
# Stop keepalive thread
stopKeepaliveTimer(update_timer)
# Exit
sys.exit(0)
# Handle signals gracefully
signal.signal(signal.SIGTERM, cleanup)
signal.signal(signal.SIGINT, cleanup)
signal.signal(signal.SIGQUIT, cleanup)
# Gather useful data about our host for staticdata
# Static data format: 'cpu_count', 'arch', 'os', 'kernel'
staticdata = []
staticdata.append(str(psutil.cpu_count()))
staticdata.append(subprocess.run(['uname', '-r'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
staticdata.append(subprocess.run(['uname', '-o'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
staticdata.append(subprocess.run(['uname', '-m'], stdout=subprocess.PIPE).stdout.decode('ascii').strip())
# Print static data on start
print('{0}Node hostname:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), myhostname))
print('{0}IPMI hostname:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), config['ipmi_hostname']))
print('{0}Machine details:{1}'.format(ansiiprint.bold(), ansiiprint.end()))
print(' {0}CPUs:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[0]))
print(' {0}Arch:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[3]))
print(' {0}OS:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[2]))
print(' {0}Kernel:{1} {2}'.format(ansiiprint.bold(), ansiiprint.end(), staticdata[1]))
# Check if our node exists in Zookeeper, and create it if not
if zk_conn.exists('/nodes/{}'.format(myhostname)):
print("Node is " + ansiiprint.green() + "present" + ansiiprint.end() + " in Zookeeper")
# Update static data just in case it's changed
zkhandler.writedata(zk_conn, { '/nodes/{}/staticdata'.format(myhostname): ' '.join(staticdata) })
else:
print("Node is " + ansiiprint.red() + "absent" + ansiiprint.end() + " in Zookeeper; adding new node")
keepalive_time = int(time.time())
transaction = zk_conn.transaction()
transaction.create('/nodes/{}'.format(myhostname), 'hypervisor'.encode('ascii'))
# Basic state information
transaction.create('/nodes/{}/daemonstate'.format(myhostname), 'stop'.encode('ascii'))
transaction.create('/nodes/{}/domainstate'.format(myhostname), 'ready'.encode('ascii'))
transaction.create('/nodes/{}/staticdata'.format(myhostname), ' '.join(staticdata).encode('ascii'))
transaction.create('/nodes/{}/memfree'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/memused'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/memalloc'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/vcpualloc'.format(myhostname), '0'.encode('ascii'))
transaction.create('/nodes/{}/cpuload'.format(myhostname), '0.0'.encode('ascii'))
transaction.create('/nodes/{}/runningdomains'.format(myhostname), ''.encode('ascii'))
transaction.create('/nodes/{}/domainscount'.format(myhostname), '0'.encode('ascii'))
# Keepalives and fencing information
transaction.create('/nodes/{}/keepalive'.format(myhostname), str(keepalive_time).encode('ascii'))
transaction.create('/nodes/{}/ipmihostname'.format(myhostname), config['ipmi_hostname'].encode('ascii'))
transaction.create('/nodes/{}/ipmiusername'.format(myhostname), config['ipmi_username'].encode('ascii'))
transaction.create('/nodes/{}/ipmipassword'.format(myhostname), config['ipmi_password'].encode('ascii'))
transaction.commit()
zkhandler.writedata(zk_conn, { '/nodes/{}/daemonstate'.format(myhostname): 'init' })
t_node = dict()
s_domain = dict()
node_list = []
domain_list = []
@zk_conn.ChildrenWatch('/nodes')
def updatenodes(new_node_list):
global node_list
node_list = new_node_list
print(ansiiprint.blue() + 'Node list: ' + ansiiprint.end() + '{}'.format(' '.join(node_list)))
for node in node_list:
if node in t_node:
t_node[node].updatenodelist(t_node)
else:
t_node[node] = NodeInstance.NodeInstance(myhostname, node, t_node, s_domain, zk_conn, config)
@zk_conn.ChildrenWatch('/domains')
def updatedomains(new_domain_list):
global domain_list
domain_list = new_domain_list
print(ansiiprint.blue() + 'Domain list: ' + ansiiprint.end() + '{}'.format(' '.join(domain_list)))
for domain in domain_list:
if not domain in s_domain:
s_domain[domain] = VMInstance.VMInstance(domain, zk_conn, config, t_node[myhostname]);
for node in node_list:
if node in t_node:
t_node[node].updatedomainlist(s_domain)
# Set up our update function
this_node = t_node[myhostname]
update_zookeeper = this_node.update_zookeeper
# Create timer to update this node in Zookeeper
def createKeepaliveTimer():
interval = int(config['keepalive_interval'])
ansiiprint.echo('Starting keepalive timer ({} second interval)'.format(interval), '', 'o')
update_timer = apscheduler.schedulers.background.BackgroundScheduler()
update_timer.add_job(update_zookeeper, 'interval', seconds=interval)
update_timer.start()
return update_timer
def stopKeepaliveTimer(update_timer):
ansiiprint.echo('Stopping keepalive timer', '', 'c')
update_timer.shutdown()
# Start keepalive thread
update_timer = createKeepaliveTimer()
update_zookeeper()
# Tick loop
while True:
try:
time.sleep(0.1)
except:
break

0
virtualization-daemon/pvcvd/__init__.py
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