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#!/usr/bin/env python
# (c) 2015, Yannig Perre <yannig.perre@gmail.com>
#
# This file is part of Ansible,
#
# Ansible is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# Ansible 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with Ansible. If not, see <http://www.gnu.org/licenses/>.
'''
Nagios livestatus inventory script. Before using this script, please
update nagios_livestatus.ini file.
Livestatus is a nagios/naemon/shinken module which let you retrieve
informations stored in the monitoring core.
This plugin inventory need livestatus API for python. Please install it
before using this script (apt/pip/yum/...).
Checkmk livestatus: https://mathias-kettner.de/checkmk_livestatus.html
Livestatus API: http://www.naemon.org/documentation/usersguide/livestatus.html
'''
import os
import re
import argparse
import sys
try:
import configparser
except ImportError:
import ConfigParser
configparser = ConfigParser
import json
try:
from mk_livestatus import Socket
except ImportError:
sys.exit("Error: mk_livestatus is needed. Try something like: pip install python-mk-livestatus")
class NagiosLivestatusInventory(object):
def parse_ini_file(self):
config = configparser.SafeConfigParser()
config.read(os.path.dirname(os.path.realpath(__file__)) + '/nagios_livestatus.ini')
for section in config.sections():
if not config.has_option(section, 'livestatus_uri'):
continue
# If fields_to_retrieve is not set, using default fields
fields_to_retrieve = self.default_fields_to_retrieve
if config.has_option(section, 'fields_to_retrieve'):
fields_to_retrieve = [field.strip() for field in config.get(section, 'fields_to_retrieve').split(',')]
fields_to_retrieve = tuple(fields_to_retrieve)
# default section values
section_values = {
'var_prefix': 'livestatus_',
'host_filter': None,
'host_field': 'name',
'group_field': 'groups'
}
for key, value in section_values.items():
if config.has_option(section, key):
section_values[key] = config.get(section, key).strip()
# Retrieving livestatus string connection
livestatus_uri = config.get(section, 'livestatus_uri')
backend_definition = None
# Local unix socket
unix_match = re.match('unix:(.*)', livestatus_uri)
if unix_match is not None:
backend_definition = {'connection': unix_match.group(1)}
# Remote tcp connection
tcp_match = re.match('tcp:(.*):([^:]*)', livestatus_uri)
if tcp_match is not None:
backend_definition = {'connection': (tcp_match.group(1), int(tcp_match.group(2)))}
# No valid livestatus_uri => exiting
if backend_definition is None:
raise Exception('livestatus_uri field is invalid (%s). Expected: unix:/path/to/live or tcp:host:port' % livestatus_uri)
# Updating backend_definition with current value
backend_definition['name'] = section
backend_definition['fields'] = fields_to_retrieve
for key, value in section_values.items():
backend_definition[key] = value
self.backends.append(backend_definition)
def parse_options(self):
parser = argparse.ArgumentParser()
parser.add_argument('--host', nargs=1)
parser.add_argument('--list', action='store_true')
parser.add_argument('--pretty', action='store_true')
self.options = parser.parse_args()
def add_host(self, hostname, group):
if group not in self.result:
self.result[group] = {}
self.result[group]['hosts'] = []
if hostname not in self.result[group]['hosts']:
self.result[group]['hosts'].append(hostname)
def query_backend(self, backend, host=None):
'''Query a livestatus backend'''
hosts_request = Socket(backend['connection']).hosts.columns(backend['host_field'], backend['group_field'])
if backend['host_filter'] is not None:
hosts_request = hosts_request.filter(backend['host_filter'])
if host is not None:
hosts_request = hosts_request.filter('name = ' + host[0])
hosts_request._columns += backend['fields']
hosts = hosts_request.call()
for host in hosts:
hostname = host[backend['host_field']]
hostgroups = host[backend['group_field']]
if not isinstance(hostgroups, list):
hostgroups = [hostgroups]
self.add_host(hostname, 'all')
self.add_host(hostname, backend['name'])
for group in hostgroups:
self.add_host(hostname, group)
for field in backend['fields']:
var_name = backend['var_prefix'] + field
if hostname not in self.result['_meta']['hostvars']:
self.result['_meta']['hostvars'][hostname] = {}
self.result['_meta']['hostvars'][hostname][var_name] = host[field]
def __init__(self):
self.defaultgroup = 'group_all'
self.default_fields_to_retrieve = ('address', 'alias', 'display_name', 'childs', 'parents')
self.backends = []
self.options = None
self.parse_ini_file()
self.parse_options()
self.result = {}
self.result['_meta'] = {}
self.result['_meta']['hostvars'] = {}
self.json_indent = None
if self.options.pretty:
self.json_indent = 2
if len(self.backends) == 0:
sys.exit("Error: Livestatus configuration is missing. See nagios_livestatus.ini.")
for backend in self.backends:
self.query_backend(backend, self.options.host)
if self.options.host:
print(json.dumps(self.result['_meta']['hostvars'][self.options.host[0]], indent=self.json_indent))
elif self.options.list:
print(json.dumps(self.result, indent=self.json_indent))
else:
sys.exit("usage: --list or --host HOSTNAME [--pretty]")
NagiosLivestatusInventory()
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