Changes for pending fencing configurationt
This commit is contained in:
parent
76a431a500
commit
20a45f3d36
|
@ -20,7 +20,7 @@
|
|||
#
|
||||
###############################################################################
|
||||
|
||||
import os, sys, socket, time, libvirt, kazoo.client
|
||||
import os, sys, socket, time, libvirt, kazoo.client, threading, fencenode
|
||||
|
||||
class NodeInstance():
|
||||
def __init__(self, name, t_node, s_domain, zk):
|
||||
|
@ -179,11 +179,13 @@ class NodeInstance():
|
|||
self.cpucount = conn.getCPUMap()[0]
|
||||
self.memfree = conn.getFreeMemory()
|
||||
self.cpuload = os.getloadavg()[0]
|
||||
keepalive_time = int(time.time())
|
||||
try:
|
||||
self.zk.set(self.zkey + '/cpucount', str(self.cpucount).encode('ascii'))
|
||||
self.zk.set(self.zkey + '/memfree', str(self.memfree).encode('ascii'))
|
||||
self.zk.set(self.zkey + '/cpuload', str(self.cpuload).encode('ascii'))
|
||||
self.zk.set(self.zkey + '/runningdomains', ' '.join(self.domain_list).encode('ascii'))
|
||||
self.zk.set(self.zkey + '/keepalive', keepalive_time.encode('ascii'))
|
||||
except:
|
||||
return
|
||||
|
||||
|
@ -198,11 +200,21 @@ class NodeInstance():
|
|||
# Update our local node lists
|
||||
for node_name in self.t_node:
|
||||
try:
|
||||
state, stat = self.zk.get('/nodes/%s/state' % node_name)
|
||||
node_state = state.decode('ascii')
|
||||
node_state = self.zk.get('/nodes/%s/state' % node_name)[0].decode('ascii')
|
||||
node_keepalive = int(self.zk.get('/nodes/%s/keepalive' % node_name)[0].decode('ascii'))
|
||||
except:
|
||||
node_state = 'stop'
|
||||
node_state = 'unknown'
|
||||
node_keepalive = 0
|
||||
|
||||
# Handle deadtime and fencng if needed (>30 seconds out-of-date keepalive info)
|
||||
node_deadtime = int(time.time()) - 30
|
||||
if node_keepalive < node_deadtime and ( node_state != 'dead' and node_state != 'flush' and node_state != 'stop' ):
|
||||
print('>>> Node {} is dead! Performing fence operation in 3 seconds.'.format(node_name))
|
||||
self.zk.set('/domains/{}/state'.format(node_name), 'dead'.encode('ascii'))
|
||||
fence_thread = threading.Thread(target=fencenode.fence, args=(node_name), kwargs={})
|
||||
fence_thread.start()
|
||||
|
||||
# Update the arrays
|
||||
if node_state == 'start' and node_name not in self.active_node_list:
|
||||
self.active_node_list.append(node_name)
|
||||
try:
|
||||
|
|
|
@ -0,0 +1,246 @@
|
|||
#!/usr/bin/env python3
|
||||
|
||||
# fencenode.py - Supplemental functions to handle fencing of nodes
|
||||
# Part of the Parallel Virtual Cluster (PVC) system
|
||||
#
|
||||
# Copyright (C) 2018 Joshua M. Boniface <joshua@boniface.me>
|
||||
#
|
||||
# This program is free software: you can redistribute it and/or modify
|
||||
# it under the terms of the GNU General Public License as published by
|
||||
# the Free Software Foundation, either version 3 of the License, or
|
||||
# (at your option) any later version.
|
||||
#
|
||||
# This program is distributed in the hope that it will be useful,
|
||||
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
# GNU General Public License for more details.
|
||||
#
|
||||
# You should have received a copy of the GNU General Public License
|
||||
# along with this program. If not, see <https://www.gnu.org/licenses/>.
|
||||
#
|
||||
###############################################################################
|
||||
|
||||
import os, sys, libvirt, uuid, kazoo.client, lxml.objectify, click
|
||||
|
||||
#
|
||||
# Validate a UUID
|
||||
#
|
||||
def validateUUID(dom_uuid):
|
||||
try:
|
||||
uuid.UUID(dom_uuid)
|
||||
return True
|
||||
except:
|
||||
return False
|
||||
|
||||
|
||||
#
|
||||
# Connect and disconnect from Zookeeper
|
||||
#
|
||||
def startZKConnection(zk_host):
|
||||
zk = kazoo.client.KazooClient(hosts=zk_host)
|
||||
zk.start()
|
||||
return zk
|
||||
|
||||
def stopZKConnection(zk):
|
||||
zk.stop()
|
||||
zk.close()
|
||||
return 0
|
||||
|
||||
|
||||
#
|
||||
# XML information parsing functions
|
||||
#
|
||||
def getInformationFromXML(zk, uuid, long_output):
|
||||
# Obtain the contents of the XML from Zookeeper
|
||||
try:
|
||||
xml = zk.get('/domains/%s/xml' % uuid)[0].decode('ascii')
|
||||
dstate = zk.get('/domains/%s/state' % uuid)[0].decode('ascii')
|
||||
dhypervisor = zk.get('/domains/%s/hypervisor' % uuid)[0].decode('ascii')
|
||||
dlasthypervisor = zk.get('/domains/%s/lasthypervisor' % uuid)[0].decode('ascii')
|
||||
except:
|
||||
return None
|
||||
|
||||
if dlasthypervisor == '':
|
||||
dlasthypervisor = 'N/A'
|
||||
|
||||
# Parse XML using lxml.objectify
|
||||
parsed_xml = lxml.objectify.fromstring(xml)
|
||||
|
||||
# Get the information we want from it
|
||||
duuid = parsed_xml.uuid
|
||||
dname = parsed_xml.name
|
||||
dmemory = parsed_xml.memory
|
||||
dmemory_unit = parsed_xml.memory.attrib['unit']
|
||||
dvcpu = parsed_xml.vcpu
|
||||
try:
|
||||
dvcputopo = '{}/{}/{}'.format(parsed_xml.cpu.topology.attrib['sockets'], parsed_xml.cpu.topology.attrib['cores'], parsed_xml.cpu.topology.attrib['threads'])
|
||||
except:
|
||||
dvcputopo = 'N/A'
|
||||
dtype = parsed_xml.os.type
|
||||
darch = parsed_xml.os.type.attrib['arch']
|
||||
dmachine = parsed_xml.os.type.attrib['machine']
|
||||
dfeatures = []
|
||||
for feature in parsed_xml.features.getchildren():
|
||||
dfeatures.append(feature.tag)
|
||||
dconsole = parsed_xml.devices.console.attrib['type']
|
||||
demulator = parsed_xml.devices.emulator
|
||||
ddisks = []
|
||||
dnets = []
|
||||
dcontrollers = []
|
||||
for device in parsed_xml.devices.getchildren():
|
||||
if device.tag == 'disk':
|
||||
disk_attrib = device.source.attrib
|
||||
disk_target = device.target.attrib
|
||||
disk_type = device.attrib['type']
|
||||
if disk_type == 'network':
|
||||
disk_obj = { 'type': disk_attrib.get('protocol'), 'name': disk_attrib.get('name'), 'dev': disk_target.get('dev'), 'bus': disk_target.get('bus') }
|
||||
elif disk_type == 'file':
|
||||
disk_obj = { 'type': 'file', 'name': disk_attrib.get('file'), 'dev': disk_target.get('dev'), 'bus': disk_target.get('bus') }
|
||||
else:
|
||||
disk_obj = {}
|
||||
ddisks.append(disk_obj)
|
||||
if device.tag == 'interface':
|
||||
net_type = device.attrib['type']
|
||||
net_mac = device.mac.attrib['address']
|
||||
net_bridge = device.source.attrib[net_type]
|
||||
net_model = device.model.attrib['type']
|
||||
net_obj = { 'type': net_type, 'mac': net_mac, 'source': net_bridge, 'model': net_model }
|
||||
dnets.append(net_obj)
|
||||
if device.tag == 'controller':
|
||||
controller_type = device.attrib['type']
|
||||
try:
|
||||
controller_model = device.attrib['model']
|
||||
except KeyError:
|
||||
controller_model = 'none'
|
||||
controller_obj = { 'type': controller_type, 'model': controller_model }
|
||||
dcontrollers.append(controller_obj)
|
||||
|
||||
# Format a nice output; do this line-by-line then concat the elements at the end
|
||||
ainformation = []
|
||||
ainformation.append('Virtual machine information:')
|
||||
ainformation.append('')
|
||||
# Basic information
|
||||
ainformation.append('UUID: {}'.format(duuid))
|
||||
ainformation.append('Name: {}'.format(dname))
|
||||
ainformation.append('Memory: {} {}'.format(dmemory, dmemory_unit))
|
||||
ainformation.append('vCPUs: {}'.format(dvcpu))
|
||||
ainformation.append('Topology [S/C/T]: {}'.format(dvcputopo))
|
||||
|
||||
if long_output == True:
|
||||
# Virtualization information
|
||||
ainformation.append('')
|
||||
ainformation.append('Emulator: {}'.format(demulator))
|
||||
ainformation.append('Type: {}'.format(dtype))
|
||||
ainformation.append('Arch: {}'.format(darch))
|
||||
ainformation.append('Machine: {}'.format(dmachine))
|
||||
ainformation.append('Features: {}'.format(' '.join(dfeatures)))
|
||||
|
||||
# PVC cluster information
|
||||
ainformation.append('')
|
||||
ainformation.append('State: {}'.format(dstate))
|
||||
ainformation.append('Active Hypervisor: {}'.format(dhypervisor))
|
||||
ainformation.append('Last Hypervisor: {}'.format(dlasthypervisor))
|
||||
|
||||
if long_output == True:
|
||||
# Disk list
|
||||
ainformation.append('')
|
||||
ainformation.append('Disks: ID Type Name Dev Bus')
|
||||
for disk in ddisks:
|
||||
ainformation.append(' {0: <3} {1: <5} {2: <20} {3: <4} {4: <5}'.format(ddisks.index(disk), disk['type'], disk['name'], disk['dev'], disk['bus']))
|
||||
# Network list
|
||||
ainformation.append('')
|
||||
ainformation.append('Interfaces: ID Type Source Model MAC')
|
||||
for net in dnets:
|
||||
ainformation.append(' {0: <3} {1: <8} {2: <8} {3: <8} {4: <17}'.format(dnets.index(net), net['type'], net['source'], net['model'], net['mac']))
|
||||
# Controller list
|
||||
ainformation.append('')
|
||||
ainformation.append('Controllers: ID Type Model')
|
||||
for controller in dcontrollers:
|
||||
ainformation.append(' {0: <3} {1: <8} {2: <8}'.format(dcontrollers.index(controller), controller['type'], controller['model']))
|
||||
|
||||
# Join it all together
|
||||
information = '\n'.join(ainformation)
|
||||
return information
|
||||
|
||||
|
||||
#
|
||||
# Cluster search functions
|
||||
#
|
||||
def getClusterDomainList(zk):
|
||||
# Get a list of UUIDs by listing the children of /domains
|
||||
uuid_list = zk.get_children('/domains')
|
||||
name_list = []
|
||||
# For each UUID, get the corresponding name from the data
|
||||
for uuid in uuid_list:
|
||||
name_list.append(zk.get('/domains/%s' % uuid)[0].decode('ascii'))
|
||||
return uuid_list, name_list
|
||||
|
||||
def searchClusterByUUID(zk, uuid):
|
||||
try:
|
||||
# Get the lists
|
||||
uuid_list, name_list = getClusterDomainList(zk)
|
||||
# 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, name):
|
||||
try:
|
||||
# Get the lists
|
||||
uuid_list, name_list = getClusterDomainList(zk)
|
||||
# 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
|
||||
|
||||
|
||||
#
|
||||
# Allow mutually exclusive options in Click
|
||||
#
|
||||
class MutuallyExclusiveOption(click.Option):
|
||||
def __init__(self, *args, **kwargs):
|
||||
meargs = kwargs.pop('mutually_exclusive', [])
|
||||
_me_arg = []
|
||||
_me_func = []
|
||||
|
||||
for arg in meargs:
|
||||
_me_arg.append(arg['argument'])
|
||||
_me_func.append(arg['function'])
|
||||
|
||||
self.me_arg = set(_me_arg)
|
||||
self.me_func = set(_me_func)
|
||||
|
||||
help = kwargs.get('help', '')
|
||||
if self.me_func:
|
||||
ex_str = ', '.join(self.me_arg)
|
||||
kwargs['help'] = help + (
|
||||
' Mutually exclusive with `' + ex_str + '`.'
|
||||
)
|
||||
|
||||
super(MutuallyExclusiveOption, self).__init__(*args, **kwargs)
|
||||
|
||||
def handle_parse_result(self, ctx, opts, args):
|
||||
if self.me_func.intersection(opts) and self.name in opts:
|
||||
raise click.UsageError(
|
||||
"Illegal usage: `{}` is mutually exclusive with "
|
||||
"arguments `{}`.".format(
|
||||
self.opts[-1],
|
||||
', '.join(self.me_arg)
|
||||
)
|
||||
)
|
||||
|
||||
return super(MutuallyExclusiveOption, self).handle_parse_result(
|
||||
ctx,
|
||||
opts,
|
||||
args
|
||||
)
|
2
pvcd.py
2
pvcd.py
|
@ -78,12 +78,14 @@ atexit.register(cleanup)
|
|||
if zk.exists('%s' % mynodestring):
|
||||
print("Node is present in Zookeeper")
|
||||
else:
|
||||
keepalive_time = int(time.time())
|
||||
zk.create('%s' % mynodestring, 'hypervisor'.encode('ascii'))
|
||||
zk.create('%s/state' % mynodestring, 'stop'.encode('ascii'))
|
||||
zk.create('%s/cpucount' % mynodestring, '0'.encode('ascii'))
|
||||
zk.create('%s/memfree' % mynodestring, '0'.encode('ascii'))
|
||||
zk.create('%s/cpuload' % mynodestring, '0.0'.encode('ascii'))
|
||||
zk.create('%s/runningdomains' % mynodestring, ''.encode('ascii'))
|
||||
zk.create('%s/keepalive' % mynodestring, keepalive_time.encode('ascii'))
|
||||
|
||||
t_node = dict()
|
||||
s_domain = dict()
|
||||
|
|
Loading…
Reference in New Issue