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#!/usr/bin/python
# -*- coding: utf-8 -*-
# (c) 2013, Darryl Stoflet <stoflet@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/>.
#
DOCUMENTATION = '''
---
module: monit
short_description: Manage the state of a program monitored via Monit
description:
- Manage the state of a program monitored via I(Monit)
version_added: "1.2"
options:
name:
description:
- The name of the I(monit) program/process to manage
required: true
default: null
state:
description:
- The state of service
required: true
default: null
choices: [ "present", "started", "stopped", "restarted", "monitored", "unmonitored", "reloaded" ]
requirements: [ ]
author: Darryl Stoflet
'''
EXAMPLES = '''
# Manage the state of program "httpd" to be in "started" state.
- monit: name=httpd state=started
'''
def main():
arg_spec = dict(
name=dict(required=True),
state=dict(required=True, choices=['present', 'started', 'restarted', 'stopped', 'monitored', 'unmonitored', 'reloaded'])
)
module = AnsibleModule(argument_spec=arg_spec, supports_check_mode=True)
name = module.params['name']
state = module.params['state']
MONIT = module.get_bin_path('monit', True)
if state == 'reloaded':
if module.check_mode:
module.exit_json(changed=True)
rc, out, err = module.run_command('%s reload' % MONIT)
if rc != 0:
module.fail_json(msg='monit reload failed', stdout=out, stderr=err)
module.exit_json(changed=True, name=name, state=state)
def status():
"""Return the status of the process in monit, or the empty string if not present."""
rc, out, err = module.run_command('%s summary' % MONIT, check_rc=True)
for line in out.split('\n'):
# Sample output lines:
# Process 'name' Running
# Process 'name' Running - restart pending
parts = line.lower().split()
if len(parts) > 2 and parts[0] == 'process' and parts[1] == "'%s'" % name:
return ' '.join(parts[2:])
else:
return ''
def run_command(command):
"""Runs a monit command, and returns the new status."""
module.run_command('%s %s %s' % (MONIT, command, name), check_rc=True)
return status()
present = status() != ''
if not present and not state == 'present':
module.fail_json(msg='%s process not presently configured with monit' % name, name=name, state=state)
if state == 'present':
if not present:
if module.check_mode:
module.exit_json(changed=True)
status = run_command('reload')
if status == '':
module.fail_json(msg='%s process not configured with monit' % name, name=name, state=state)
else:
module.exit_json(changed=True, name=name, state=state)
module.exit_json(changed=False, name=name, state=state)
running = 'running' in status()
if running and state in ['started', 'monitored']:
module.exit_json(changed=False, name=name, state=state)
if running and state == 'stopped':
if module.check_mode:
module.exit_json(changed=True)
status = run_command('stop')
if status in ['not monitored'] or 'stop pending' in status:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg='%s process not stopped' % name, status=status)
if running and state == 'unmonitored':
if module.check_mode:
module.exit_json(changed=True)
status = run_command('unmonitor')
if status in ['not monitored']:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg='%s process not unmonitored' % name, status=status)
elif state == 'restarted':
if module.check_mode:
module.exit_json(changed=True)
status = run_command('restart')
if status in ['initializing', 'running'] or 'restart pending' in status:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg='%s process not restarted' % name, status=status)
elif not running and state == 'started':
if module.check_mode:
module.exit_json(changed=True)
status = run_command('start')
if status in ['initializing', 'running'] or 'start pending' in status:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg='%s process not started' % name, status=status)
elif not running and state == 'monitored':
if module.check_mode:
module.exit_json(changed=True)
status = run_command('monitor')
if status not in ['not monitored']:
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg='%s process not monitored' % name, status=status)
module.exit_json(changed=False, name=name, state=state)
# import module snippets
from ansible.module_utils.basic import *
main()
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