89 lines
3.7 KiB
Python
89 lines
3.7 KiB
Python
# (C) Copyright 2015 Hewlett Packard Enterprise Development Company LP
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"""Detection Plugin for MK_Livestatus Nagios/Icinga Event Broker Module
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This monasca_setup detection plugin will determine if either Nagios or
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Icinga is configured on this system, if that configuration includes the
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MK_Livestatus module, if that module's configured socket path exists
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(which should be the case as long as Nagios/Icinga is running), and if
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the Monasca Agent's user can read it. If all these criteria are met, the
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mk_livestatus Agent plugin will be enabled with a basic configuration that
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polls all services and all hosts.
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"""
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import logging
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import os
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import re
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import monasca_setup.agent_config
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import monasca_setup.detection
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log = logging.getLogger(__name__)
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# List several common locations of Nagios/Icinga configuration files to scan
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nagios_cfg_files = ['/etc/nagios/nagios.cfg',
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'/etc/nagios/nagios.cfg',
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'/etc/nagios3/nagios.cfg',
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'/etc/nagios4/nagios.cfg',
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'/usr/local/nagios/nagios.cfg',
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'/usr/local/nagios/etc/nagios.cfg',
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'/etc/icinga/icinga.cfg',
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'/usr/local/icinga/icinga.cfg',
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'/usr/local/icinga/etc/icinga.cfg']
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agent_user = 'monasca-agent'
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class MKLivestatus(monasca_setup.detection.Plugin):
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"""Detect MK_Livestatus Nagios Event Broker and verify permissions
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"""
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def _find_socket_path(self):
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"""Search common Nagios/Icinga config file locations for mk_livestatus
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broker module socket path
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"""
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# Search likely Nagios/Icinga config file locations
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for cfg_file in nagios_cfg_files:
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if os.path.isfile(cfg_file):
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# Search the file for the mk_livestatus socket
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with open(cfg_file) as cfg:
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for line in cfg:
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if line.startswith('broker_module') and line.find('mk') > 0:
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return line.split(' ')[-1].rstrip()
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def _detect(self):
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"""Set self.available=True if module is installed and path is readable
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"""
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socket_path = self._find_socket_path()
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if self.dependencies_installed and socket_path is not None:
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if os.path.exists(socket_path):
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# Is it readable by the monasca-agent user?
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test_readable = os.system('sudo -u {0} ls -1 {1} >/dev/null 2>&1'.format(agent_user,
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socket_path))
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if test_readable != 0:
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log.info("Not configuring MK_Livestatus:")
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log.info("\t{0} exists but is not readable by {1}.".format(socket_path,
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agent_user))
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else:
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self.available = True
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self.socket_path = socket_path
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def build_config(self):
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"""Build the config as a Plugins object and return.
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"""
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config = monasca_setup.agent_config.Plugins()
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log.info("\tEnabling the mk_livestatus plugin")
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config['mk_livestatus'] = {'init_config': {'socket_path': self.socket_path},
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'instances': [{'check_type': 'service'},
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{'name': 'nagios.host_status',
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'check_type': 'host'}]}
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log.info("\tConfigured for all services and hosts")
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return config
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def dependencies_installed(self):
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try:
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import socket
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except ImportError:
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return False
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else:
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return True
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