New plugin: check_collectd (proof of concept)
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Sven Velt
parent
ba038dbba2
commit
ed17f572dc
141
check_collectd.py
Executable file
141
check_collectd.py
Executable file
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#!/usr/bin/env python
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# -*- encoding: utf-8 -*-
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#####################################################################
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# (c) 2016 by Sven Velt, Germany #
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# sven-mymonplugins@velt.biz #
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# #
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# This file is part of "velt.biz - My Monitoring Plugins" #
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# a fork of "team(ix) Monitoring Plugins" in 2015 #
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# URL: https://gogs.velt.biz/velt.biz/MyMonPlugins/ #
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# #
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# This file is free software: you can redistribute it and/or modify #
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# it under the terms of the GNU General Public License as published #
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# by the Free Software Foundation, either version 2 of the License, #
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# or (at your option) any later version. #
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# #
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# This file is distributed in the hope that it will be useful, but #
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# WITHOUT ANY WARRANTY; without even the implied warranty of #
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the #
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# GNU General Public License for more details. #
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# #
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# You should have received a copy of the GNU General Public License #
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# along with this file. If not, see <http://www.gnu.org/licenses/>. #
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#####################################################################
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import os
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import re
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import socket
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import sys
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from collections import OrderedDict
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try:
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from monitoringplugin import MonitoringPlugin
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except ImportError:
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print '=========================='
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print 'AIKS! Python import error!'
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print '==========================\n'
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print 'Could not find "monitoringplugin.py"!\n'
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print 'Did you download "%s"' % os.path.basename(sys.argv[0])
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print 'without "monitoringplugin.py"?\n'
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print 'Please go back to'
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print 'https://gogs.velt.biz/velt.biz/MyMonPlugins and download it,'
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print 'or even better:'
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print 'get a full archive at http://gogs.velt.biz/velt.biz/MyMonPlugins/releases\n'
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sys.exit(127)
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plugin = MonitoringPlugin(
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pluginname='check_collectd',
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tagforstatusline='COLLECTD',
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description='Check values of collectd server',
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version='0.1',
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)
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SOCKPATHs= [
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'/var/run/collectd-unixsock',
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]
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plugin.add_cmdlineoption('-S', '--socket', 'socket', 'path to socket of collectd', default=None)
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plugin.add_cmdlineoption('-H', '--host', 'host', 'Hostname (in collectd) to check', default=None)
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plugin.add_cmdlineoption('-V', '--value_spec', 'var', 'value to from collectd', default=None)
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plugin.add_cmdlineoption('-w', '', 'warn', 'warning thresold', default=None)
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plugin.add_cmdlineoption('-c', '', 'crit', 'warning thresold', default=None)
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plugin.parse_cmdlineoptions()
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if not plugin.options.host:
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plugin.back2nagios(3, 'Need a hostname (-H/--hostname) to check!')
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if not plugin.options.var:
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plugin.back2nagios(3, 'Need a value_spec (-V/--value_spec) to check!')
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# FIXME: New method: find path (file or dir) and test we can read/write from/to it
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if not plugin.options.socket:
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plugin.verbose(2, "Auto-detecting path to collectd's unixsock...")
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for sockpath in SOCKPATHs:
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if os.path.exists(sockpath):
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plugin.options.socket = sockpath
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plugin.verbose(2, 'Found it at "%s"' % sockpath)
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break
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if not plugin.options.socket:
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plugin.back2nagios(3, 'Need a socket path (-S/--socket) to connecto to')
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if not os.access(plugin.options.socket, os.W_OK):
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plugin.back2nagios(3, 'Could not read from socket "%s"' % plugin.options.socket)
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# FIXME: End
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s = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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s.connect(plugin.options.socket)
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command = 'GETVAL "%s/%s"\n' % (plugin.options.host, plugin.options.var)
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plugin.verbose(3, 'Socket command: %s' % command.rstrip())
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s.send(command)
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s.shutdown(socket.SHUT_WR)
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answer = ''
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try:
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while True:
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s.settimeout(10)
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data = s.recv(32768)
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if data:
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answer += data
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else:
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break
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except socket.timeout:
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plugin.back2nagios(3, 'Timeout while reading from socket')
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answer = answer.split('\n')
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plugin.verbose(3, 'Socket answer: %s' % answer)
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(status, text) = answer.pop(0).split(' ', 1)
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try:
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status = long(status)
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except ValueError:
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plugin.back2nagios(3, 'Unknown answer from socket: "%s"' % answer[0])
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plugin.verbose(3, 'Socket status code: %s' % status)
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if status < 0:
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plugin.back2nagios(3, 'Collectd error: "%s"' % text)
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answer = answer[:status]
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answer = OrderedDict( [ (p[0], float(p[1])) for p in [ p.split('=') for p in answer ] ] )
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for (key,value) in answer.iteritems():
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returncode = plugin.value_wc_to_returncode(value, plugin.options.warn, plugin.options.crit)
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longoutput = '%s: %s' % (key, value)
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perfdata={
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'label': key,
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'value': value,
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'unit': '',
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'warn': plugin.options.warn,
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'crit': plugin.options.crit,
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}
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plugin.remember_check(key, returncode, longoutput, perfdata=[perfdata,])
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plugin.brain2output()
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plugin.exit()
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