def command_status(parser, input_args):
"""Print current cluster status."""
parser.parse_args(input_args)
cluster = pvestats.buildcluster()
cluster.freeze()
print_state(cluster)
def command_flush(parser, input_args):
"""Migrate all migrateable VMs off the given Node."""
parser.add_argument(
'-v',
'--verbose',
action=_VerbosityAction,
help='increase verbosity level, can be used multiple times')
parser.add_argument('-n',
'--noexec',
action='store_true',
help='only show, don\'t migrate')
parser.add_argument('-c',
'--count',
type=int,
help='number of migrations to run')
parser.add_argument('-o',
'--onlyha',
action='store_true',
help='only migrate HA managed VMs')
parser.add_argument(
'-i',
'--ignore',
type=lambda x: x.split(','),
help='comma separated list of nodes to ignore as migration targets')
parser.add_argument('-f',
'--nofail',
action='store_true',
help="do not fail if a migration's exit code is not 0")
parser.add_argument('nodes',
nargs='+',
help='name of the nodes to migrate all VMs off')
args = parser.parse_args(input_args)
cluster = pvestats.buildcluster()
cluster.freeze()
options = {'onlyha': args.onlyha}
if 'count' in args and args.count:
options['maxmigrations'] = args.count
if 'ignore' in args and args.ignore:
options['ignorenodenames'] = args.ignore
try:
newcluster = pvecluster.planflush(args.nodes, cluster.clone(),
**options)
exec_migrate(cluster, newcluster, args)
except Error as exc:
print('{}: {} - Aborting'.format(exc.__class__.__name__, exc.message))
def readstats():
cluster = pvestats.buildcluster()
hostname = socket.gethostname()
node = cluster[hostname]
for vm in node.vms(lambda c: c.status == 'running'):
if vm.type == 'qemu':
blockstat = pveqemumonitor.query_blockstats(vm.vmid)
vm.diskrops = sum([d['stats']['rd_operations'] for d in blockstat])
vm.diskwops = sum([d['stats']['wr_operations'] for d in blockstat])
for plugin, metrics in plugin_metrics.items():
for metric, attrs in metrics.items():
try:
values = [getattr(vm, attr) for attr in attrs]
except AttributeError:
continue
instance = "VM_%s" % vm.vmid
dispatch(plugin, instance, metric, None, values)
def command_balance(parser, input_args):
"""Migrate VMs in order to achieve a memeory balanced state."""
parser.add_argument(
'-v',
'--verbose',
action=_VerbosityAction,
help='increase verbosity level, can be used multiple times')
parser.add_argument('-n',
'--noexec',
action='store_true',
help='only show, don\'t migrate')
parser.add_argument('-c',
'--count',
type=int,
help='number of migrations to run')
parser.add_argument(
'-i',
'--ignore',
type=lambda x: x.split(','),
help='comma separated list of nodes to ignore as migration targets')
parser.add_argument('-f',
'--nofail',
action='store_true',
help="do not fail if a migration's exit code is not 0")
args = parser.parse_args(input_args)
cluster = pvestats.buildcluster()
cluster.freeze()
options = {}
if 'count' in args and args.count:
options['iterations'] = args.count
if 'ignore' in args and args.ignore:
options['ignorenodenames'] = args.ignore
try:
newcluster = pvecluster.planbalance(cluster.clone(), **options)
exec_migrate(cluster, newcluster, args)
except Error as exc:
print('{}: {} - Aborting'.format(exc.__class__.__name__, exc.message))