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#!/usr/bin/env python
#
# Copyright (C) 2012 eNovance <licensing@enovance>
#
# Authors: Mehdi Abaakouk <sileht@sileht.net>
# Gael Lambert <gael.lambert@enovance.com>
# Jesse Andrews <anotherjesse@rackspace.com>
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
#
# Plugin to monitor status of Floating IPs in Nova
#
# To monitor instance states, link instance_states to this file.
# E.g.
# ln -s /usr/share/munin/plugins/nova_instance_states /etc/munin/plugins/
#
# Needs following minimal configuration in plugin-conf.d/nova:
# [nova_*]
# user nova
#
# Magic markers
#%# capabilities=autoconf suggest
#%# family=auto
import sys
try:
from nova import context
from nova import db
from nova import flags
from nova import utils
from nova.compute import power_state
except ImportError:
succesful_import = False
else:
succesful_import = True
class InstanceState(object):
instance_counts = None
states = None
@classmethod
def init(cls, metric):
if cls.states and cls.instance_counts:
return
ctxt = context.get_admin_context()
instances = db.instance_get_all(ctxt)
cls.instance_counts = {}
instance_types = {}
for it in db.instance_type_get_all(ctxt, True):
instance_types[it['id']] = it['name']
for instance in instances:
i = dict(instance)
i['instance_type'] = i['type'] = instance_types.get(
instance.instance_type_id,
'(unknown')
val = cls.instance_counts.get(i[metric], 0)
cls.instance_counts[i[metric]] = val + 1
cls.states = cls.instance_counts.keys()
@classmethod
def get_states(cls, metric):
InstanceState.init(metric)
return cls.states
@classmethod
def get_instance_counts(cls, metric):
InstanceState.init(metric)
return cls.instance_counts
def get_name(metric, code):
if metric == "power_state":
return power_state.name(code)
elif metric in ["root_gb", "ephemeral_gb"]:
return "%d gb" % code
else:
return code
def print_config(metric):
states = InstanceState.get_states(metric)
print 'graph_title Nova Instance %s' % metric
print 'graph_vlabel instances'
print 'graph_args --base 1000 --lower-limit 0'
print 'graph_category nova'
print 'graph_scale no'
print 'graph_info This graph shows the number of instances by %s' % metric
for state in states:
print '%s.label %s' % (state, get_name(metric, state))
print '%s.draw LINE2' % state
print '%s.info %s IPs' % (state, state)
def print_values(metric):
status = InstanceState.get_instance_counts(metric)
for (state, value) in status.iteritems():
print '%s.value %s' % (state, value)
def print_suggest():
suggest = [ "vm_state",
"vcpus",
"task_state",
"root_gb",
"ephemeral_gb",
"power_state",
"memory_mb",
"instance_type_id",
]
print "\n".join(suggest)
if __name__ == '__main__':
argv = sys.argv[:]
utils.default_flagfile()
flags.FLAGS(sys.argv)
metric = argv[0].split('nova_instance_').pop() or 'vm_state'
if len(argv) > 1:
if argv[1] == 'config':
print_config(metric)
elif argv[1] == 'suggest':
print_suggest()
elif argv[1] == 'autoconf':
if not succesful_import:
print 'no (failed import nova module)'
sys.exit(0)
else:
print 'yes'
elif succesful_import:
print_values(metric)
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