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pvc/daemon-common/vm.py

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Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
#!/usr/bin/env python3
# vm.py - PVC client function library, VM fuctions
# Part of the Parallel Virtual Cluster (PVC) system
#
Update copyright header year to 2020
2020-01-08 19:38:02 -05:00
# Copyright (C) 2018-2020 Joshua M. Boniface <joshua@boniface.me>
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
#
# 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 subprocess
import difflib
import colorama
import click
import lxml.objectify
import configparser
import kazoo.client
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
from collections import deque
Rename API and common Debian packages Closes #79
2020-02-08 18:48:59 -05:00
import daemon_lib.ansiprint as ansiprint
import daemon_lib.zkhandler as zkhandler
import daemon_lib.common as common
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Rename API and common Debian packages Closes #79
2020-02-08 18:48:59 -05:00
import daemon_lib.ceph as ceph
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
#
# Cluster search functions
#
def getClusterDomainList(zk_conn):
# Get a list of UUIDs by listing the children of /domains
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
uuid_list = zkhandler.listchildren(zk_conn, '/domains')
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
name_list = []
# For each UUID, get the corresponding name from the data
for uuid in uuid_list:
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
name_list.append(zkhandler.readdata(zk_conn, '/domains/%s' % uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return uuid_list, name_list
def searchClusterByUUID(zk_conn, uuid):
try:
# Get the lists
uuid_list, name_list = getClusterDomainList(zk_conn)
# We're looking for UUID, so find that element ID
index = uuid_list.index(uuid)
# Get the name_list element at that index
name = name_list[index]
except ValueError:
# We didn't find anything
return None
return name
def searchClusterByName(zk_conn, name):
try:
# Get the lists
uuid_list, name_list = getClusterDomainList(zk_conn)
# We're looking for name, so find that element ID
index = name_list.index(name)
# Get the uuid_list element at that index
uuid = uuid_list[index]
except ValueError:
# We didn't find anything
return None
return uuid
def getDomainUUID(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if common.validateUUID(domain):
dom_name = searchClusterByUUID(zk_conn, domain)
dom_uuid = searchClusterByName(zk_conn, dom_name)
else:
dom_uuid = searchClusterByName(zk_conn, domain)
dom_name = searchClusterByUUID(zk_conn, dom_uuid)
return dom_uuid
Add getDomainName to vm functions
2018-09-25 02:26:37 -04:00
def getDomainName(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Add getDomainName to vm functions
2018-09-25 02:26:37 -04:00
if common.validateUUID(domain):
dom_name = searchClusterByUUID(zk_conn, domain)
dom_uuid = searchClusterByName(zk_conn, dom_name)
else:
dom_uuid = searchClusterByName(zk_conn, domain)
dom_name = searchClusterByUUID(zk_conn, dom_uuid)
return dom_name
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
#
# Direct functions
#
Add is_migrated check function
2019-07-25 14:33:50 -04:00
def is_migrated(zk_conn, domain):
# Validate that VM exists in cluster
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
if last_node:
return True
Fix typo in common
2019-07-25 15:45:45 -04:00
else:
Add is_migrated check function
2019-07-25 14:33:50 -04:00
return False
Implement lock flush function for clients Uses a similar command pathway as the Ceph commands do, but in a different location (pending move of the Ceph commands to a similar location).
2019-08-07 13:38:49 -04:00
def flush_locks(zk_conn, domain):
# Validate that VM exists in cluster
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Verify that the VM is in a stopped state; freeing locks is not safe otherwise
state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
if state != 'stop':
return False, 'ERROR: VM "{}" is not in stopped state; flushing RBD locks on a running VM is dangerous.'.format(domain)
# Tell the cluster to create a new OSD for the host
flush_locks_string = 'flush_locks {}'.format(dom_uuid)
zkhandler.writedata(zk_conn, {'/cmd/domains': flush_locks_string})
# Wait 1/2 second for the cluster to get the message and start working
time.sleep(0.5)
# Acquire a read lock, so we get the return exclusively
lock = zkhandler.readlock(zk_conn, '/cmd/domains')
with lock:
try:
result = zkhandler.readdata(zk_conn, '/cmd/domains').split()[0]
if result == 'success-flush_locks':
message = 'Flushed locks on VM "{}"'.format(domain)
success = True
else:
message = 'ERROR: Failed to flush locks on VM "{}"; check node logs for details.'.format(domain)
success = False
except:
message = 'ERROR: Command ignored by node.'
success = False
# Acquire a write lock to ensure things go smoothly
lock = zkhandler.writelock(zk_conn, '/cmd/domains')
with lock:
time.sleep(0.5)
zkhandler.writedata(zk_conn, {'/cmd/domains': ''})
return success, message
Support overriding initial state of VM Still defaults to "stop" state unless overridden in the calling function.
2020-01-08 17:46:30 -05:00
def define_vm(zk_conn, config_data, target_node, node_limit, node_selector, node_autostart, profile=None, initial_state='stop'):
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Parse the XML data
Store list of RBD disks in ZK Store a basic list of RBD disks in Zookeeper for access by the node subsystem to handle RBD locks. This avoids the need to implement complex parsing logic inside the fencing configuration (or elsewhere). Also handle a malformed XML content properly during VM define.
2019-07-09 10:22:23 -04:00
try:
parsed_xml = lxml.objectify.fromstring(config_data)
except:
return False, 'ERROR: Failed to parse XML data.'
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = parsed_xml.uuid.text
dom_name = parsed_xml.name.text
Enforce VM uniqueness when defining Closes #56
2019-12-09 09:56:59 -05:00
# Ensure that the UUID and name are unique
Fix missing argument
2019-12-09 11:31:56 -05:00
if searchClusterByUUID(zk_conn, dom_uuid) or searchClusterByName(zk_conn, dom_name):
Enforce VM uniqueness when defining Closes #56
2019-12-09 09:56:59 -05:00
return False, 'ERROR: Specified VM "{}" or UUID "{}" matches an existing VM on the cluster'.format(dom_name, dom_uuid)
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if not target_node:
Fix minor bugs
2019-10-12 02:03:23 -04:00
target_node = common.findTargetNode(zk_conn, dom_uuid)
Properly verify node inputs
2019-06-24 13:25:24 -04:00
else:
# Verify node is valid
valid_node = common.verifyNode(zk_conn, target_node)
if not valid_node:
Store list of RBD disks in ZK Store a basic list of RBD disks in Zookeeper for access by the node subsystem to handle RBD locks. This avoids the need to implement complex parsing logic inside the fencing configuration (or elsewhere). Also handle a malformed XML content properly during VM define.
2019-07-09 10:22:23 -04:00
return False, 'ERROR: Specified node "{}" is invalid.'.format(target_node)
# Obtain the RBD disk list using the common functions
Add stats to VM information
2020-06-07 00:40:21 -04:00
ddisks = common.getDomainDisks(parsed_xml, {})
Store list of RBD disks in ZK Store a basic list of RBD disks in Zookeeper for access by the node subsystem to handle RBD locks. This avoids the need to implement complex parsing logic inside the fencing configuration (or elsewhere). Also handle a malformed XML content properly during VM define.
2019-07-09 10:22:23 -04:00
rbd_list = []
for disk in ddisks:
if disk['type'] == 'rbd':
rbd_list.append(disk['name'])
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
# Join the limit
Handle the list of node_limits even better
2019-12-19 13:22:38 -05:00
if isinstance(node_limit, list) and node_limit:
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
formatted_node_limit = ','.join(node_limit)
else:
Handle the list of node_limits even better
2019-12-19 13:22:38 -05:00
formatted_node_limit = ''
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
# Join the RBD list
Handle the list of node_limits even better
2019-12-19 13:22:38 -05:00
if isinstance(rbd_list, list) and rbd_list:
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
formatted_rbd_list = ','.join(rbd_list)
else:
Handle the list of node_limits even better
2019-12-19 13:22:38 -05:00
formatted_rbd_list = ''
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Add the new domain to Zookeeper
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
zkhandler.writedata(zk_conn, {
'/domains/{}'.format(dom_uuid): dom_name,
Support overriding initial state of VM Still defaults to "stop" state unless overridden in the calling function.
2020-01-08 17:46:30 -05:00
'/domains/{}/state'.format(dom_uuid): initial_state,
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
'/domains/{}/node'.format(dom_uuid): target_node,
'/domains/{}/lastnode'.format(dom_uuid): '',
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
'/domains/{}/node_limit'.format(dom_uuid): formatted_node_limit,
Implement VM metadata and use it Implements the storing of three VM metadata attributes: 1. Node limits - allows specifying a list of hosts on which the VM must run. This limit influences the migration behaviour of VMs. 2. Per-VM node selectors - allows each VM to have its migration autoselection method specified, to automatically allow different methods per VM based on the administrator's preferences. 3. VM autorestart - allows a VM to be automatically restarted from a stopped state, presumably due to a failure to find a target node (either due to limits or otherwise) during a flush/fence recovery, on the next node unflush/ready state of its home hypervisor. Useful mostly in conjunction with limits to ensure that VMs which were shut down due to there being no valid migration targets are started back up when their node becomes ready again. Includes the full client interaction with these metadata options, including printing, as well as defining a new function to modify this metadata. For the CLI it is set/modified either on `vm define` or via the `vm meta` command. For the API it is set/modified either on a POST to the `/vm` endpoint (during VM definition) or on POST to the `/vm/<vm>` endpoint. For the API this replaces the previous reserved word for VM creation from scratch as this will no longer be implemented in-daemon (see #22). Closes #52
2019-10-12 01:17:39 -04:00
'/domains/{}/node_selector'.format(dom_uuid): node_selector,
'/domains/{}/node_autostart'.format(dom_uuid): node_autostart,
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
'/domains/{}/failedreason'.format(dom_uuid): '',
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
'/domains/{}/consolelog'.format(dom_uuid): '',
Better handle list elements when defining VM
2019-12-19 12:03:46 -05:00
'/domains/{}/rbdlist'.format(dom_uuid): formatted_rbd_list,
Add profile from provisioner to data stored in ZK
2019-12-11 16:49:11 -05:00
'/domains/{}/profile'.format(dom_uuid): profile,
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
'/domains/{}/xml'.format(dom_uuid): config_data
})
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
return True, 'Added new VM with Name "{}" and UUID "{}" to database.'.format(dom_name, dom_uuid)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Allow modification of a VM profile And fix some bugs around this. Fixes #76
2020-01-30 11:45:46 -05:00
def modify_vm_metadata(zk_conn, domain, node_limit, node_selector, node_autostart, provisioner_profile):
Implement VM metadata and use it Implements the storing of three VM metadata attributes: 1. Node limits - allows specifying a list of hosts on which the VM must run. This limit influences the migration behaviour of VMs. 2. Per-VM node selectors - allows each VM to have its migration autoselection method specified, to automatically allow different methods per VM based on the administrator's preferences. 3. VM autorestart - allows a VM to be automatically restarted from a stopped state, presumably due to a failure to find a target node (either due to limits or otherwise) during a flush/fence recovery, on the next node unflush/ready state of its home hypervisor. Useful mostly in conjunction with limits to ensure that VMs which were shut down due to there being no valid migration targets are started back up when their node becomes ready again. Includes the full client interaction with these metadata options, including printing, as well as defining a new function to modify this metadata. For the CLI it is set/modified either on `vm define` or via the `vm meta` command. For the API it is set/modified either on a POST to the `/vm` endpoint (during VM definition) or on POST to the `/vm/<vm>` endpoint. For the API this replaces the previous reserved word for VM creation from scratch as this will no longer be implemented in-daemon (see #22). Closes #52
2019-10-12 01:17:39 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
if node_limit is not None:
Fix bug setting node limit of CSV
2019-12-26 19:08:26 -05:00
zkhandler.writedata(zk_conn, {
'/domains/{}/node_limit'.format(dom_uuid): node_limit
})
Implement VM metadata and use it Implements the storing of three VM metadata attributes: 1. Node limits - allows specifying a list of hosts on which the VM must run. This limit influences the migration behaviour of VMs. 2. Per-VM node selectors - allows each VM to have its migration autoselection method specified, to automatically allow different methods per VM based on the administrator's preferences. 3. VM autorestart - allows a VM to be automatically restarted from a stopped state, presumably due to a failure to find a target node (either due to limits or otherwise) during a flush/fence recovery, on the next node unflush/ready state of its home hypervisor. Useful mostly in conjunction with limits to ensure that VMs which were shut down due to there being no valid migration targets are started back up when their node becomes ready again. Includes the full client interaction with these metadata options, including printing, as well as defining a new function to modify this metadata. For the CLI it is set/modified either on `vm define` or via the `vm meta` command. For the API it is set/modified either on a POST to the `/vm` endpoint (during VM definition) or on POST to the `/vm/<vm>` endpoint. For the API this replaces the previous reserved word for VM creation from scratch as this will no longer be implemented in-daemon (see #22). Closes #52
2019-10-12 01:17:39 -04:00
if node_selector is not None:
zkhandler.writedata(zk_conn, {
'/domains/{}/node_selector'.format(dom_uuid): node_selector
})
if node_autostart is not None:
zkhandler.writedata(zk_conn, {
'/domains/{}/node_autostart'.format(dom_uuid): node_autostart
})
Allow modification of a VM profile And fix some bugs around this. Fixes #76
2020-01-30 11:45:46 -05:00
if provisioner_profile is not None:
zkhandler.writedata(zk_conn, {
'/domains/{}/profile'.format(dom_uuid): provisioner_profile
})
Implement VM metadata and use it Implements the storing of three VM metadata attributes: 1. Node limits - allows specifying a list of hosts on which the VM must run. This limit influences the migration behaviour of VMs. 2. Per-VM node selectors - allows each VM to have its migration autoselection method specified, to automatically allow different methods per VM based on the administrator's preferences. 3. VM autorestart - allows a VM to be automatically restarted from a stopped state, presumably due to a failure to find a target node (either due to limits or otherwise) during a flush/fence recovery, on the next node unflush/ready state of its home hypervisor. Useful mostly in conjunction with limits to ensure that VMs which were shut down due to there being no valid migration targets are started back up when their node becomes ready again. Includes the full client interaction with these metadata options, including printing, as well as defining a new function to modify this metadata. For the CLI it is set/modified either on `vm define` or via the `vm meta` command. For the API it is set/modified either on a POST to the `/vm` endpoint (during VM definition) or on POST to the `/vm/<vm>` endpoint. For the API this replaces the previous reserved word for VM creation from scratch as this will no longer be implemented in-daemon (see #22). Closes #52
2019-10-12 01:17:39 -04:00
return True, 'Successfully modified PVC metadata of VM "{}".'.format(domain)
Fix some problems with modify command after split
2018-09-25 02:32:08 -04:00
def modify_vm(zk_conn, domain, restart, new_vm_config):
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
Fix some problems with modify command after split
2018-09-25 02:32:08 -04:00
dom_name = getDomainName(zk_conn, domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Ensure rbdlist is updated when modifying VM config
2020-05-12 11:07:58 -04:00
# Parse and valiate the XML
try:
parsed_xml = lxml.objectify.fromstring(new_vm_config)
except:
return False, 'ERROR: Failed to parse XML data.'
# Obtain the RBD disk list using the common functions
Add stats to VM information
2020-06-07 00:40:21 -04:00
ddisks = common.getDomainDisks(parsed_xml, {})
Ensure rbdlist is updated when modifying VM config
2020-05-12 11:07:58 -04:00
rbd_list = []
for disk in ddisks:
if disk['type'] == 'rbd':
rbd_list.append(disk['name'])
# Join the RBD list
if isinstance(rbd_list, list) and rbd_list:
formatted_rbd_list = ','.join(rbd_list)
else:
formatted_rbd_list = ''
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Add the modified config to Zookeeper
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
zk_data = {
'/domains/{}'.format(dom_uuid): dom_name,
Ensure rbdlist is updated when modifying VM config
2020-05-12 11:07:58 -04:00
'/domains/{}/rbdlist'.format(dom_uuid): formatted_rbd_list,
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
'/domains/{}/xml'.format(dom_uuid): new_vm_config
}
zkhandler.writedata(zk_conn, zk_data)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Ensure VM restart happens after cfg update Fixes #74
2020-01-30 11:15:07 -05:00
if restart:
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' })
lock.release()
Ensure VM restart happens after cfg update Fixes #74
2020-01-30 11:15:07 -05:00
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return True, ''
Allow dumping of VMs
2019-03-12 21:09:54 -04:00
def dump_vm(zk_conn, domain):
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Allow dumping of VMs
2019-03-12 21:09:54 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Gram the domain XML and dump it to stdout
vm_xml = zkhandler.readdata(zk_conn, '/domains/{}/xml'.format(dom_uuid))
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
return True, vm_xml
Allow dumping of VMs
2019-03-12 21:09:54 -04:00
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
def undefine_vm(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Shut down the VM
Fix bad ZK node entry
2019-07-06 01:42:55 -04:00
current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
if current_vm_state != 'stop':
# Set the domain into stop mode
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
# Wait for 2 seconds to allow state to flow to all nodes
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
time.sleep(2)
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Gracefully terminate the class instances
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'delete'})
time.sleep(2)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Delete the configurations
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
zkhandler.deletekey(zk_conn, '/domains/{}'.format(dom_uuid))
return True, 'Undefined VM "{}" from the cluster.'.format(domain)
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
def remove_vm(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
Reorganize client functions Move some functions to the common file for future usage.
2019-07-09 09:29:47 -04:00
disk_list = common.getDomainDiskList(zk_conn, dom_uuid)
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Shut down the VM
current_vm_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
if current_vm_state != 'stop':
# Set the domain into stop mode
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
lock.release()
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
# Wait for 2 seconds to allow state to flow to all nodes
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
time.sleep(2)
# Gracefully terminate the class instances
zkhandler.writedata(zk_conn, {'/domains/{}/state'.format(dom_uuid): 'delete'})
time.sleep(2)
# Delete the configurations
zkhandler.deletekey(zk_conn, '/domains/{}'.format(dom_uuid))
Add delay after deleting VM Otherwise there might still be a watcher on the block device when we go to delete it, which causes a failure.
2019-07-10 19:05:36 -04:00
time.sleep(2)
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Remove disks
for disk in disk_list:
# vmpool/vmname_volume
Don't crash if VM has invalid disks Useful if storage=False and removing a VM.
2019-07-31 23:05:00 -04:00
try:
disk_pool, disk_name = disk.split('/')
retcode, message = ceph.remove_volume(zk_conn, disk_pool, disk_name)
except ValueError:
continue
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
return True, 'Removed VM "{}" and disks from the cluster.'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
def start_vm(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Set the VM to start
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'start' })
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return True, 'Starting VM "{}".'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
def restart_vm(zk_conn, domain, wait=False):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get state and verify we're OK to proceed
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if current_state != 'start':
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return False, 'ERROR: VM "{}" is not in "start" state!'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
retmsg = 'Restarting VM "{}".'.format(domain)
# Set the VM to restart
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'restart' })
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
if wait:
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == 'restart':
time.sleep(1)
retmsg = 'Restarted VM "{}"'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
return True, retmsg
def shutdown_vm(zk_conn, domain, wait=False):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get state and verify we're OK to proceed
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if current_state != 'start':
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return False, 'ERROR: VM "{}" is not in "start" state!'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
retmsg = 'Shutting down VM "{}"'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Set the VM to shutdown
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'shutdown' })
lock.release()
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
if wait:
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == 'shutdown':
time.sleep(1)
Use correct wording of "shut down"
2020-02-19 10:04:58 -05:00
retmsg = 'Shut down VM "{}"'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
return True, retmsg
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
def stop_vm(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get state and verify we're OK to proceed
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Set the VM to start
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'stop' })
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return True, 'Forcibly stopping VM "{}".'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Add VM disable command Closes #53
2019-10-23 23:37:42 -04:00
def disable_vm(zk_conn, domain):
# Validate that VM exists in cluster
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get state and verify we're OK to proceed
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
if current_state != 'stop':
return False, 'ERROR: VM "{}" must be stopped before disabling!'.format(domain)
# Set the VM to start
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, { '/domains/{}/state'.format(dom_uuid): 'disable' })
lock.release()
Add VM disable command Closes #53
2019-10-23 23:37:42 -04:00
Use consistent tense for VM states Replace "failed" with "fail" and "disabled" with "disable" for consistency with the remaining states.
2019-10-23 23:53:25 -04:00
return True, 'Marked VM "{}" as disable.'.format(domain)
Add VM disable command Closes #53
2019-10-23 23:37:42 -04:00
Allow enforcement of live migration Provides a CLI and API argument to force live migration, which triggers a new VM state "migrate-live". The node daemon VMInstance during migrate will read this flag from the state and, if enforced, will not trigger a shutdown migration. Closes #95
2020-06-06 11:49:21 -04:00
def move_vm(zk_conn, domain, target_node, wait=False, force_live=False):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
# Get state and verify we're OK to proceed
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
if current_state != 'start':
# If the current state isn't start, preserve it; we're not doing live migration
target_state = current_state
else:
Allow enforcement of live migration Provides a CLI and API argument to force live migration, which triggers a new VM state "migrate-live". The node daemon VMInstance during migrate will read this flag from the state and, if enforced, will not trigger a shutdown migration. Closes #95
2020-06-06 11:49:21 -04:00
if force_live:
target_state = 'migrate-live'
else:
target_state = 'migrate'
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_node = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if not target_node:
Use build-in selector and respect limits in client Use the new built-in selector option, as well as respecting node limits, when performing migrate or move actions on a VM via the clients.
2019-10-12 01:45:44 -04:00
target_node = common.findTargetNode(zk_conn, dom_uuid)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
Properly verify node inputs
2019-06-24 13:25:24 -04:00
# Verify node is valid
valid_node = common.verifyNode(zk_conn, target_node)
if not valid_node:
Fix minor bugs
2019-10-12 01:50:15 -04:00
return False, 'ERROR: Specified node "{}" is invalid.'.format(target_node)
Properly verify node inputs
2019-06-24 13:25:24 -04:00
Use build-in selector and respect limits in client Use the new built-in selector option, as well as respecting node limits, when performing migrate or move actions on a VM via the clients.
2019-10-12 01:45:44 -04:00
# Check if node is within the limit
Properly handle empty node limit
2020-01-05 13:42:23 -05:00
node_limit = zkhandler.readdata(zk_conn, '/domains/{}/node_limit'.format(dom_uuid))
if node_limit and target_node not in node_limit.split(','):
Fix minor bugs
2019-10-12 01:50:15 -04:00
return False, 'ERROR: Specified node "{}" is not in the allowed list of nodes for VM "{}".'.format(target_node, domain)
Use build-in selector and respect limits in client Use the new built-in selector option, as well as respecting node limits, when performing migrate or move actions on a VM via the clients.
2019-10-12 01:45:44 -04:00
Properly verify node inputs
2019-06-24 13:25:24 -04:00
# Verify if node is current node
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).
2018-10-14 02:01:35 -04:00
if target_node == current_node:
Allow move of migrated VM to current node Will make the migrate permanent instead of throwing an error. Fixes #96
2020-06-06 11:21:58 -04:00
last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
if last_node:
Fix erroneous comma
2020-08-05 10:34:30 -04:00
zkhandler.writedata(zk_conn, {'/domains/{}/lastnode'.format(dom_uuid): ''})
Allow move of migrated VM to current node Will make the migrate permanent instead of throwing an error. Fixes #96
2020-06-06 11:21:58 -04:00
return True, 'Making temporary migration permanent for VM "{}".'.format(domain)
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return False, 'ERROR: VM "{}" is already running on node "{}".'.format(domain, current_node)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Avoid migration to invalid target_nodes
2019-10-17 12:16:21 -04:00
if not target_node:
return False, 'ERROR: Could not find a valid migration target for VM "{}".'.format(domain)
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
retmsg = 'Permanently migrating VM "{}" to node "{}".'.format(domain, target_node)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, {
Add locks for VM state changes Use exclusive locks during API events which change VM state. This is fairly critical to avoid potential duplicate updates. Only implemented for these specifically required functions to avoid major performance hits elsewhere.
2020-10-21 10:40:00 -04:00
'/domains/{}/state'.format(dom_uuid): target_state,
'/domains/{}/node'.format(dom_uuid): target_node,
'/domains/{}/lastnode'.format(dom_uuid): ''
})
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
if wait:
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
time.sleep(1)
retmsg = 'Permanently migrated VM "{}" to node "{}"'.format(domain, target_node)
return True, retmsg
Allow enforcement of live migration Provides a CLI and API argument to force live migration, which triggers a new VM state "migrate-live". The node daemon VMInstance during migrate will read this flag from the state and, if enforced, will not trigger a shutdown migration. Closes #95
2020-06-06 11:49:21 -04:00
def migrate_vm(zk_conn, domain, target_node, force_migrate, wait=False, force_live=False):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get state and verify we're OK to proceed
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if current_state != 'start':
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
# If the current state isn't start, preserve it; we're not doing live migration
target_state = current_state
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
Allow enforcement of live migration Provides a CLI and API argument to force live migration, which triggers a new VM state "migrate-live". The node daemon VMInstance during migrate will read this flag from the state and, if enforced, will not trigger a shutdown migration. Closes #95
2020-06-06 11:49:21 -04:00
if force_live:
target_state = 'migrate-live'
else:
target_state = 'migrate'
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_node = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(dom_uuid))
last_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if last_node and not force_migrate:
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
return False, 'ERROR: VM "{}" has been previously migrated.'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if not target_node:
Use build-in selector and respect limits in client Use the new built-in selector option, as well as respecting node limits, when performing migrate or move actions on a VM via the clients.
2019-10-12 01:45:44 -04:00
target_node = common.findTargetNode(zk_conn, dom_uuid)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
Properly verify node inputs
2019-06-24 13:25:24 -04:00
# Verify node is valid
valid_node = common.verifyNode(zk_conn, target_node)
if not valid_node:
Fix minor bugs
2019-10-12 01:50:15 -04:00
return False, 'ERROR: Specified node "{}" is invalid.'.format(target_node)
Properly verify node inputs
2019-06-24 13:25:24 -04:00
Use build-in selector and respect limits in client Use the new built-in selector option, as well as respecting node limits, when performing migrate or move actions on a VM via the clients.
2019-10-12 01:45:44 -04:00
# Check if node is within the limit
Properly handle empty node limit
2020-01-05 13:42:23 -05:00
node_limit = zkhandler.readdata(zk_conn, '/domains/{}/node_limit'.format(dom_uuid))
if node_limit and target_node not in node_limit.split(','):
Fix minor bugs
2019-10-12 01:50:15 -04:00
return False, 'ERROR: Specified node "{}" is not in the allowed list of nodes for VM "{}".'.format(target_node, domain)
Use build-in selector and respect limits in client Use the new built-in selector option, as well as respecting node limits, when performing migrate or move actions on a VM via the clients.
2019-10-12 01:45:44 -04:00
Properly verify node inputs
2019-06-24 13:25:24 -04:00
# Verify if node is current node
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).
2018-10-14 02:01:35 -04:00
if target_node == current_node:
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return False, 'ERROR: VM "{}" is already running on node "{}".'.format(domain, current_node)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Avoid migration to invalid target_nodes
2019-10-17 12:16:21 -04:00
if not target_node:
return False, 'ERROR: Could not find a valid migration target for VM "{}".'.format(domain)
Make force_migrate not replace existing node Previous to this, if once force-migrated a VM, the previous_node value would be updated to the current node, which is likely never what an administrator would want. Change this functionality so that the previous node value is not changed, and update the documentation to reflect this.
2019-07-07 15:10:48 -04:00
# Don't overwrite an existing last_node when using force_migrate
if last_node and force_migrate:
current_node = last_node
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
retmsg = 'Migrating VM "{}" to node "{}".'.format(domain, target_node)
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, {
'/domains/{}/state'.format(dom_uuid): target_state,
'/domains/{}/node'.format(dom_uuid): target_node,
'/domains/{}/lastnode'.format(dom_uuid): current_node
})
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
if wait:
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
time.sleep(1)
retmsg = 'Migrated VM "{}" to node "{}"'.format(domain, target_node)
return True, retmsg
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Allow enforcement of live migration Provides a CLI and API argument to force live migration, which triggers a new VM state "migrate-live". The node daemon VMInstance during migrate will read this flag from the state and, if enforced, will not trigger a shutdown migration. Closes #95
2020-06-06 11:49:21 -04:00
def unmigrate_vm(zk_conn, domain, wait=False, force_live=False):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
if not dom_uuid:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get state and verify we're OK to proceed
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
current_state = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if current_state != 'start':
Don't set unmigrated VMs to start
2019-03-20 10:19:01 -04:00
# If the current state isn't start, preserve it; we're not doing live migration
target_state = current_state
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
Allow enforcement of live migration Provides a CLI and API argument to force live migration, which triggers a new VM state "migrate-live". The node daemon VMInstance during migrate will read this flag from the state and, if enforced, will not trigger a shutdown migration. Closes #95
2020-06-06 11:49:21 -04:00
if force_live:
target_state = 'migrate-live'
else:
target_state = 'migrate'
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
target_node = zkhandler.readdata(zk_conn, '/domains/{}/lastnode'.format(dom_uuid))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
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).
2018-10-14 02:01:35 -04:00
if target_node == '':
Always use the passed domain in messages Don't ever output an ugly UUID unless that's what was actually sent to the function. Makes output much much nicer, especially on errors.
2019-07-05 16:38:54 -04:00
return False, 'ERROR: VM "{}" has not been previously migrated.'.format(domain)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
retmsg = 'Unmigrating VM "{}" back to node "{}".'.format(domain, target_node)
Use explicit acquire/release instead of with The with blocks did not seem to work as expected. Go back to exclusive locks as well since these are more consistent.
2020-10-21 11:32:40 -04:00
lock = zkhandler.exclusivelock(zk_conn, '/domains/{}/state'.format(dom_uuid))
lock.acquire()
zkhandler.writedata(zk_conn, {
'/domains/{}/state'.format(dom_uuid): target_state,
'/domains/{}/node'.format(dom_uuid): target_node,
'/domains/{}/lastnode'.format(dom_uuid): ''
})
lock.release()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
if wait:
Clean up obsolete is_cli flags
2020-02-19 10:18:41 -05:00
while zkhandler.readdata(zk_conn, '/domains/{}/state'.format(dom_uuid)) == target_state:
Implement wait support for various VM commands Implements wait support for VM restart, shutdown, move, migrate, and unmigrate commands, similar to node flush/node unflush. Includes some additional refactoring of the move command to make its operation identical to migrate, only without recording the previous node. References #72
2020-02-19 09:45:31 -05:00
time.sleep(1)
retmsg = 'Unmigrated VM "{}" back to node "{}"'.format(domain, target_node)
return True, retmsg
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
def get_console_log(zk_conn, domain, lines=1000):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: Could not find VM "{}" in the cluster!'.format(domain)
# Get the data from ZK
console_log = zkhandler.readdata(zk_conn, '/domains/{}/consolelog'.format(dom_uuid))
# Shrink the log buffer to length lines
shrunk_log = console_log.split('\n')[-lines:]
loglines = '\n'.join(shrunk_log)
Support providing console log lines from API
2019-12-25 19:10:12 -05:00
return True, loglines
Implement domain log watching Implements the ability for a client to watch almost-live domain console logs from the hypervisors. It does this using a deque-based "tail -f" mechanism (with a configurable buffer per-VM) that watches the domain console logfile in the (configurable) directory every half-second. It then stores the current buffer in Zookeeper when changed, where a client can then request it, either as a static piece of text in the `less` pager, or via a similar "tail -f" functionality implemented using fixed line splitting and comparison to provide a generally-seamless output. Enabling this feature requires each guest VM to implement a Libvirt serial log and write its (text) console to it, for example using the default logging directory: ``` <serial type='pty'> <log file='/var/log/libvirt/vmname.log' append='off'/> <serial> ``` The append mode can be either on or off; on grows files unbounded, off causes the log (and hence the PVC log data) to be truncated on initial VM startup from offline. The administrator must choose how they best want to handle this until Libvirt implements their own clog-type logging format.
2019-04-11 19:06:06 -04:00
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
def get_info(zk_conn, domain):
Support removing VMs (and disks) from PVC clients Adds full support for removing a VM entirely, including its RBD disks, via the PVC client(s). Avoids needing an undefine + manual removal.
2019-06-27 11:19:48 -04:00
# Validate that VM exists in cluster
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
dom_uuid = getDomainUUID(zk_conn, domain)
if not dom_uuid:
return False, 'ERROR: No VM named "{}" is present in the cluster.'.format(domain)
# Gather information from XML config and print it
Reorganize client functions Move some functions to the common file for future usage.
2019-07-09 09:29:47 -04:00
domain_information = common.getInformationFromXML(zk_conn, dom_uuid)
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if not domain_information:
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
return False, 'ERROR: Could not get information about VM "{}".'.format(domain)
return True, domain_information
Support disabling fuzzy limit matching Used for the APIs when they filter by name but we don't want a fuzzy limit since we specified an exact name.
2019-07-05 16:28:18 -04:00
def get_list(zk_conn, node, state, limit, is_fuzzy=True):
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if node:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Verify node is valid
Fix variable naming bug
2019-07-05 14:18:18 -04:00
if not common.verifyNode(zk_conn, node):
Add quotes around vars in all return messages
2019-07-08 22:37:26 -04:00
return False, 'Specified node "{}" is invalid.'.format(node)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if state:
Add provision to VM list state
2020-01-21 21:51:02 -05:00
valid_states = [ 'start', 'restart', 'shutdown', 'stop', 'disable', 'fail', 'migrate', 'unmigrate', 'provision' ]
Support VM list filtering by state
2019-03-20 11:31:54 -04:00
if not state in valid_states:
return False, 'VM state "{}" is not valid.'.format(state)
Use zkhandler for everything; add delete operation
2018-10-27 15:27:08 -04:00
full_vm_list = zkhandler.listchildren(zk_conn, '/domains')
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_list = []
Handle regex in a more consistent way
2019-03-12 23:52:59 -04:00
# Set our limit to a sensible regex
Support disabling fuzzy limit matching Used for the APIs when they filter by name but we don't want a fuzzy limit since we specified an exact name.
2019-07-05 16:28:18 -04:00
if limit and is_fuzzy:
Handle regex in a more consistent way
2019-03-12 23:52:59 -04:00
try:
# Implcitly assume fuzzy limits
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if not re.match('\^.*', limit):
Handle regex in a more consistent way
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limit = '.*' + limit
Make conditionals more Pythonic
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if not re.match('.*\$', limit):
Handle regex in a more consistent way
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limit = limit + '.*'
except Exception as e:
return False, 'Regex Error: {}'.format(e)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# If we're limited, remove other nodes' VMs
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
vm_node = {}
vm_state = {}
Improve limit handling
2018-09-25 02:20:32 -04:00
for vm in full_vm_list:
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Check we don't match the limit
Improve limit handling
2018-09-25 02:20:32 -04:00
name = zkhandler.readdata(zk_conn, '/domains/{}'.format(vm))
Deleted the wrong line
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vm_node[vm] = zkhandler.readdata(zk_conn, '/domains/{}/node'.format(vm))
Support VM list filtering by state
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vm_state[vm] = zkhandler.readdata(zk_conn, '/domains/{}/state'.format(vm))
Handle regex in a more consistent way
2019-03-12 23:52:59 -04:00
# Handle limiting
Make conditionals more Pythonic
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if limit:
Refactor CLI client to split out actual functions for reuse
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try:
Make conditionals more Pythonic
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if re.match(limit, vm):
if not node and not state:
Reorganize client functions Move some functions to the common file for future usage.
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vm_list.append(common.getInformationFromXML(zk_conn, vm))
Improve limit handling
2018-09-25 02:20:32 -04:00
else:
Support VM list filtering by state
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if vm_node[vm] == node or vm_state[vm] == state:
Reorganize client functions Move some functions to the common file for future usage.
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vm_list.append(common.getInformationFromXML(zk_conn, vm))
Improve limit handling
2018-09-25 02:20:32 -04:00
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if re.match(limit, name):
if not node and not state:
Reorganize client functions Move some functions to the common file for future usage.
2019-07-09 09:29:47 -04:00
vm_list.append(common.getInformationFromXML(zk_conn, vm))
Improve limit handling
2018-09-25 02:20:32 -04:00
else:
Support VM list filtering by state
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if vm_node[vm] == node or vm_state[vm] == state:
Reorganize client functions Move some functions to the common file for future usage.
2019-07-09 09:29:47 -04:00
vm_list.append(common.getInformationFromXML(zk_conn, vm))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
except Exception as e:
Improve limit handling
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return False, 'Regex Error: {}'.format(e)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
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).
2018-10-14 02:01:35 -04:00
# Check node to avoid unneeded ZK calls
Make conditionals more Pythonic
2019-06-24 13:37:56 -04:00
if not node and not state:
Reorganize client functions Move some functions to the common file for future usage.
2019-07-09 09:29:47 -04:00
vm_list.append(common.getInformationFromXML(zk_conn, vm))
Improve limit handling
2018-09-25 02:20:32 -04:00
else:
Support VM list filtering by state
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if vm_node[vm] == node or vm_state[vm] == state:
Reorganize client functions Move some functions to the common file for future usage.
2019-07-09 09:29:47 -04:00
vm_list.append(common.getInformationFromXML(zk_conn, vm))
Update vm.py to allow API use
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return True, vm_list
#
# CLI-specific functions
#
def format_info(zk_conn, domain_information, long_output):
# Format a nice output; do this line-by-line then concat the elements at the end
ainformation = []
ainformation.append('{}Virtual machine information:{}'.format(ansiprint.bold(), ansiprint.end()))
ainformation.append('')
# Basic information
ainformation.append('{}UUID:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['uuid']))
ainformation.append('{}Name:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['name']))
ainformation.append('{}Description:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['description']))
Add provisioner profile to VM information
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ainformation.append('{}Profile:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['profile']))
Update vm.py to allow API use
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ainformation.append('{}Memory (M):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['memory']))
ainformation.append('{}vCPUs:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu']))
ainformation.append('{}Topology (S/C/T):{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['vcpu_topology']))
if long_output == True:
# Virtualization information
ainformation.append('')
ainformation.append('{}Emulator:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['emulator']))
ainformation.append('{}Type:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['type']))
ainformation.append('{}Arch:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['arch']))
ainformation.append('{}Machine:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['machine']))
ainformation.append('{}Features:{} {}'.format(ansiprint.purple(), ansiprint.end(), ' '.join(domain_information['features'])))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Update vm.py to allow API use
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# PVC cluster information
ainformation.append('')
dstate_colour = {
'start': ansiprint.green(),
'restart': ansiprint.yellow(),
'shutdown': ansiprint.yellow(),
'stop': ansiprint.red(),
Use consistent tense for VM states Replace "failed" with "fail" and "disabled" with "disable" for consistency with the remaining states.
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'disable': ansiprint.blue(),
'fail': ansiprint.red(),
Update vm.py to allow API use
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'migrate': ansiprint.blue(),
'unmigrate': ansiprint.blue()
}
ainformation.append('{}State:{} {}{}{}'.format(ansiprint.purple(), ansiprint.end(), dstate_colour[domain_information['state']], domain_information['state'], ansiprint.end()))
ainformation.append('{}Current Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['node']))
Add provisioner profile to VM information
2019-12-11 16:50:38 -05:00
if not domain_information['last_node']:
domain_information['last_node'] = "N/A"
Update vm.py to allow API use
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ainformation.append('{}Previous Node:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['last_node']))
# Get a failure reason if applicable
Make conditionals more Pythonic
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if domain_information['failed_reason']:
Fix refactoring bugs
2019-06-24 09:56:06 -04:00
ainformation.append('')
ainformation.append('{}Failure reason:{} {}'.format(ansiprint.purple(), ansiprint.end(), domain_information['failed_reason']))
Update vm.py to allow API use
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Make this even nicer
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if not domain_information['node_selector']:
formatted_node_selector = "False"
else:
formatted_node_selector = domain_information['node_selector']
if not domain_information['node_limit']:
formatted_node_limit = "False"
else:
formatted_node_limit = ', '.join(domain_information['node_limit'])
if not domain_information['node_autostart']:
formatted_node_autostart = "False"
else:
formatted_node_autostart = domain_information['node_autostart']
ainformation.append('{}Migration selector:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_selector))
ainformation.append('{}Node limit:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_limit))
ainformation.append('{}Autostart:{} {}'.format(ansiprint.purple(), ansiprint.end(), formatted_node_autostart))
Implement VM metadata and use it Implements the storing of three VM metadata attributes: 1. Node limits - allows specifying a list of hosts on which the VM must run. This limit influences the migration behaviour of VMs. 2. Per-VM node selectors - allows each VM to have its migration autoselection method specified, to automatically allow different methods per VM based on the administrator's preferences. 3. VM autorestart - allows a VM to be automatically restarted from a stopped state, presumably due to a failure to find a target node (either due to limits or otherwise) during a flush/fence recovery, on the next node unflush/ready state of its home hypervisor. Useful mostly in conjunction with limits to ensure that VMs which were shut down due to there being no valid migration targets are started back up when their node becomes ready again. Includes the full client interaction with these metadata options, including printing, as well as defining a new function to modify this metadata. For the CLI it is set/modified either on `vm define` or via the `vm meta` command. For the API it is set/modified either on a POST to the `/vm` endpoint (during VM definition) or on POST to the `/vm/<vm>` endpoint. For the API this replaces the previous reserved word for VM creation from scratch as this will no longer be implemented in-daemon (see #22). Closes #52
2019-10-12 01:17:39 -04:00
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
# Network list
net_list = []
for net in domain_information['networks']:
# Split out just the numerical (VNI) part of the brXXXX name
net_vnis = re.findall(r'\d+', net['source'])
if net_vnis:
net_vni = net_vnis[0]
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
Update vm.py to allow API use
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net_vni = re.sub('br', '', net['source'])
net_exists = zkhandler.exists(zk_conn, '/networks/{}'.format(net_vni))
if not net_exists and net_vni != 'cluster':
net_list.append(ansiprint.red() + net_vni + ansiprint.end() + ' [invalid]')
else:
net_list.append(net_vni)
ainformation.append('')
ainformation.append('{}Networks:{} {}'.format(ansiprint.purple(), ansiprint.end(), ', '.join(net_list)))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
if long_output == True:
# Disk list
ainformation.append('')
name_length = 0
for disk in domain_information['disks']:
_name_length = len(disk['name']) + 1
if _name_length > name_length:
name_length = _name_length
ainformation.append('{0}Disks:{1} {2}ID Type {3: <{width}} Dev Bus{4}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), 'Name', ansiprint.end(), width=name_length))
for disk in domain_information['disks']:
ainformation.append(' {0: <3} {1: <5} {2: <{width}} {3: <4} {4: <5}'.format(domain_information['disks'].index(disk), disk['type'], disk['name'], disk['dev'], disk['bus'], width=name_length))
ainformation.append('')
ainformation.append('{}Interfaces:{} {}ID Type Source Model MAC{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
Fix refactoring bugs
2019-06-24 09:56:06 -04:00
for net in domain_information['networks']:
ainformation.append(' {0: <3} {1: <8} {2: <10} {3: <8} {4}'.format(domain_information['networks'].index(net), net['type'], net['source'], net['model'], net['mac']))
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
# Controller list
ainformation.append('')
ainformation.append('{}Controllers:{} {}ID Type Model{}'.format(ansiprint.purple(), ansiprint.end(), ansiprint.bold(), ansiprint.end()))
for controller in domain_information['controllers']:
ainformation.append(' {0: <3} {1: <14} {2: <8}'.format(domain_information['controllers'].index(controller), controller['type'], controller['model']))
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Update vm.py to allow API use
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# Join it all together
information = '\n'.join(ainformation)
click.echo(information)
click.echo('')
def format_list(zk_conn, vm_list, raw):
Functionize duplicate code and fix net length bug
2019-06-24 10:10:07 -04:00
# Function to strip the "br" off of nets and return a nicer list
def getNiceNetID(domain_information):
# Network list
net_list = []
for net in domain_information['networks']:
# Split out just the numerical (VNI) part of the brXXXX name
net_vnis = re.findall(r'\d+', net['source'])
if net_vnis:
net_vni = net_vnis[0]
else:
net_vni = re.sub('br', '', net['source'])
net_list.append(net_vni)
return net_list
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
# Handle raw mode since it just lists the names
Move the output to a better place;
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if raw:
Handle raw sorting properly with new list format
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for vm in sorted(item['name'] for item in vm_list):
Sort the names properly
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click.echo(vm)
Move the output to a better place;
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return True, ''
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
vm_list_output = []
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# Determine optimal column widths
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).
2018-10-14 02:01:35 -04:00
# Dynamic columns: node_name, node, migrated
Tweak some output formatting in lists
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vm_name_length = 5
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
vm_uuid_length = 37
vm_state_length = 6
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).
2018-10-14 02:01:35 -04:00
vm_nets_length = 9
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
vm_ram_length = 8
vm_vcpu_length = 6
vm_node_length = 8
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).
2018-10-14 02:01:35 -04:00
vm_migrated_length = 10
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
for domain_information in vm_list:
Functionize duplicate code and fix net length bug
2019-06-24 10:10:07 -04:00
net_list = getNiceNetID(domain_information)
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# vm_name column
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
_vm_name_length = len(domain_information['name']) + 1
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if _vm_name_length > vm_name_length:
vm_name_length = _vm_name_length
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
# vm_state column
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
_vm_state_length = len(domain_information['state']) + 1
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
if _vm_state_length > vm_state_length:
vm_state_length = _vm_state_length
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).
2018-10-14 02:01:35 -04:00
# vm_nets column
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
_vm_nets_length = len(','.join(net_list)) + 1
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).
2018-10-14 02:01:35 -04:00
if _vm_nets_length > vm_nets_length:
vm_nets_length = _vm_nets_length
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
# vm_node column
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
_vm_node_length = len(domain_information['node']) + 1
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
if _vm_node_length > vm_node_length:
vm_node_length = _vm_node_length
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
# vm_migrated column
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
_vm_migrated_length = len(domain_information['migrated']) + 1
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
if _vm_migrated_length > vm_migrated_length:
vm_migrated_length = _vm_migrated_length
# Format the string (header)
vm_list_output.append(
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
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).
2018-10-14 02:01:35 -04:00
{vm_networks: <{vm_nets_length}} \
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
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).
2018-10-14 02:01:35 -04:00
{vm_node: <{vm_node_length}} \
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
vm_name_length=vm_name_length,
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
vm_uuid_length=vm_uuid_length,
vm_state_length=vm_state_length,
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).
2018-10-14 02:01:35 -04:00
vm_nets_length=vm_nets_length,
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
vm_ram_length=vm_ram_length,
vm_vcpu_length=vm_vcpu_length,
vm_node_length=vm_node_length,
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_migrated_length=vm_migrated_length,
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
bold=ansiprint.bold(),
end_bold=ansiprint.end(),
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_state_colour='',
end_colour='',
vm_name='Name',
vm_uuid='UUID',
vm_state='State',
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).
2018-10-14 02:01:35 -04:00
vm_networks='Networks',
Tweak some output formatting in lists
2018-11-01 23:24:38 -04:00
vm_memory='RAM (M)',
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_vcpu='vCPUs',
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).
2018-10-14 02:01:35 -04:00
vm_node='Node',
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_migrated='Migrated'
)
)
# Format the string (elements)
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
for domain_information in vm_list:
if domain_information['state'] == 'start':
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
vm_state_colour = ansiprint.green()
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
elif domain_information['state'] == 'restart':
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
vm_state_colour = ansiprint.yellow()
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
elif domain_information['state'] == 'shutdown':
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
vm_state_colour = ansiprint.yellow()
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
elif domain_information['state'] == 'stop':
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
vm_state_colour = ansiprint.red()
Use consistent tense for VM states Replace "failed" with "fail" and "disabled" with "disable" for consistency with the remaining states.
2019-10-23 23:53:25 -04:00
elif domain_information['state'] == 'fail':
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
vm_state_colour = ansiprint.red()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
else:
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
vm_state_colour = ansiprint.blue()
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
Handle colouring of network lists when a network is invalid
2018-10-20 15:27:07 -04:00
# Handle colouring for an invalid network config
Functionize duplicate code and fix net length bug
2019-06-24 10:10:07 -04:00
raw_net_list = getNiceNetID(domain_information)
Handle colouring of network lists when a network is invalid
2018-10-20 15:27:07 -04:00
net_list = []
Move bad-net colour outside of string This just trashed the formatting of the string if the network didn't exist, despite several previous attempts to get this to align. Give up; set the colour for the whole net list if any one network is invalid. This is not as nice as per-network colouring but saves the hassle and complexity.
2019-07-12 12:22:41 -04:00
vm_net_colour = ''
Functionize duplicate code and fix net length bug
2019-06-24 10:10:07 -04:00
for net_vni in raw_net_list:
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
net_exists = zkhandler.exists(zk_conn, '/networks/{}'.format(net_vni))
if not net_exists and net_vni != 'cluster':
Move bad-net colour outside of string This just trashed the formatting of the string if the network didn't exist, despite several previous attempts to get this to align. Give up; set the colour for the whole net list if any one network is invalid. This is not as nice as per-network colouring but saves the hassle and complexity.
2019-07-12 12:22:41 -04:00
vm_net_colour = ansiprint.red()
net_list.append(net_vni)
Handle colouring of network lists when a network is invalid
2018-10-20 15:27:07 -04:00
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_list_output.append(
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
'{bold}{vm_name: <{vm_name_length}} {vm_uuid: <{vm_uuid_length}} \
{vm_state_colour}{vm_state: <{vm_state_length}}{end_colour} \
Move bad-net colour outside of string This just trashed the formatting of the string if the network didn't exist, despite several previous attempts to get this to align. Give up; set the colour for the whole net list if any one network is invalid. This is not as nice as per-network colouring but saves the hassle and complexity.
2019-07-12 12:22:41 -04:00
{vm_net_colour}{vm_networks: <{vm_nets_length}}{end_colour} \
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
{vm_memory: <{vm_ram_length}} {vm_vcpu: <{vm_vcpu_length}} \
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).
2018-10-14 02:01:35 -04:00
{vm_node: <{vm_node_length}} \
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
{vm_migrated: <{vm_migrated_length}}{end_bold}'.format(
vm_name_length=vm_name_length,
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
vm_uuid_length=vm_uuid_length,
vm_state_length=vm_state_length,
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).
2018-10-14 02:01:35 -04:00
vm_nets_length=vm_nets_length,
Standardize the layout of lists (dynamic fields)
2018-11-02 00:42:44 -04:00
vm_ram_length=vm_ram_length,
vm_vcpu_length=vm_vcpu_length,
vm_node_length=vm_node_length,
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
vm_migrated_length=vm_migrated_length,
bold='',
end_bold='',
vm_state_colour=vm_state_colour,
Fix name of "ansiiprint" since it's "ANSI"
2018-10-20 15:28:25 -04:00
end_colour=ansiprint.end(),
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
vm_name=domain_information['name'],
vm_uuid=domain_information['uuid'],
vm_state=domain_information['state'],
Move bad-net colour outside of string This just trashed the formatting of the string if the network didn't exist, despite several previous attempts to get this to align. Give up; set the colour for the whole net list if any one network is invalid. This is not as nice as per-network colouring but saves the hassle and complexity.
2019-07-12 12:22:41 -04:00
vm_net_colour=vm_net_colour,
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00
vm_networks=','.join(net_list),
vm_memory=domain_information['memory'],
vm_vcpu=domain_information['vcpu'],
vm_node=domain_information['node'],
vm_migrated=domain_information['migrated']
Refactor CLI client to split out actual functions for reuse
2018-09-20 03:25:58 -04:00
)
)
click.echo('\n'.join(sorted(vm_list_output)))
return True, ''
Update vm.py to allow API use
2019-05-20 22:15:28 -04:00