111 lines
3.7 KiB
Python
111 lines
3.7 KiB
Python
#!/usr/bin/python
|
|
# Copyright 2015 Mirantis, Inc.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License");
|
|
# you may not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS,
|
|
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
#
|
|
# Collectd plugin for getting statistics from Nova
|
|
import collectd
|
|
from collections import Counter
|
|
from collections import defaultdict
|
|
import re
|
|
|
|
import collectd_openstack as openstack
|
|
|
|
PLUGIN_NAME = 'nova'
|
|
INTERVAL = openstack.INTERVAL
|
|
|
|
|
|
class NovaStatsPlugin(openstack.CollectdPlugin):
|
|
""" Class to report the statistics on Nova service.
|
|
|
|
status per service and number of instances broken down by state
|
|
"""
|
|
|
|
states = {'up': 0, 'down': 1, 'disabled': 2}
|
|
nova_re = re.compile('^nova-')
|
|
|
|
def collect(self):
|
|
|
|
# Get information of the state per service
|
|
# State can be: 'up', 'down' or 'disabled'
|
|
aggregated_workers = defaultdict(Counter)
|
|
|
|
for worker in self.iter_workers('nova'):
|
|
host = worker['host'].split('.')[0]
|
|
service = self.nova_re.sub('', worker['service'])
|
|
state = worker['state']
|
|
|
|
aggregated_workers[service][state] += 1
|
|
self.dispatch_value('nova_service', '',
|
|
self.states[state],
|
|
{'host': host,
|
|
'service': service,
|
|
'state': state})
|
|
|
|
for service in set(aggregated_workers.keys()).union(
|
|
('compute', 'scheduler', 'conductor', 'cert', 'consoleauth')):
|
|
|
|
total = sum(aggregated_workers[service].values())
|
|
|
|
for state in self.states:
|
|
prct = 0
|
|
if total > 0:
|
|
prct = (100.0 * aggregated_workers[service][state]) / total
|
|
|
|
self.dispatch_value('nova_services_percent', '',
|
|
prct,
|
|
{'state': state, 'service': service})
|
|
|
|
self.dispatch_value('nova_services', '',
|
|
aggregated_workers[service][state],
|
|
{'state': state, 'service': service})
|
|
servers_details = self.get_objects_details('nova', 'servers')
|
|
|
|
def groupby(d):
|
|
return d.get('status', 'unknown').lower()
|
|
status = self.count_objects_group_by(servers_details,
|
|
group_by_func=groupby)
|
|
for s, nb in status.iteritems():
|
|
self.dispatch_value('instances', s, nb)
|
|
|
|
def dispatch_value(self, plugin_instance, name, value, meta=None):
|
|
v = collectd.Values(
|
|
plugin=PLUGIN_NAME, # metric source
|
|
plugin_instance=plugin_instance,
|
|
type='gauge',
|
|
type_instance=name,
|
|
interval=INTERVAL,
|
|
# w/a for https://github.com/collectd/collectd/issues/716
|
|
meta=meta or {'0': True},
|
|
values=[value]
|
|
)
|
|
v.dispatch()
|
|
|
|
plugin = NovaStatsPlugin(collectd, PLUGIN_NAME)
|
|
|
|
|
|
def config_callback(conf):
|
|
plugin.config_callback(conf)
|
|
|
|
|
|
def notification_callback(notification):
|
|
plugin.notification_callback(notification)
|
|
|
|
|
|
def read_callback():
|
|
plugin.conditional_read_callback()
|
|
|
|
collectd.register_config(config_callback)
|
|
collectd.register_notification(notification_callback)
|
|
collectd.register_read(read_callback, INTERVAL)
|