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community.general/library/monitoring/monit
Chris Lamb f510389298 Fail if monit reload failed; don't mask the error.
This is necessary for the scenario when you push a new, broken monit
config out, and then set a state=reloaded handler - the error was
previously swallowed so you could end up with successful play but missing
monitoring (!).

Signed-off-by: Chris Lamb <chris@chris-lamb.co.uk>
2014-05-08 18:18:28 +01:00

152 lines
5.7 KiB
Python

#!/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
'''
import pipes
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)
rc, out, err = module.run_command('%s summary | grep "Process \'%s\'"' % (MONIT, pipes.quote(name)), use_unsafe_shell=True)
present = name in out
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)
module.run_command('%s reload' % MONIT, check_rc=True)
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, pipes.quote(name)), use_unsafe_shell=True)
if name in out:
module.exit_json(changed=True, name=name, state=state)
else:
module.fail_json(msg=out, name=name, state=state)
module.exit_json(changed=False, name=name, state=state)
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, pipes.quote(name)), use_unsafe_shell=True)
running = 'running' in out.lower()
if running and (state == 'started' or state == 'monitored'):
module.exit_json(changed=False, name=name, state=state)
if running and state == 'monitored':
module.exit_json(changed=False, name=name, state=state)
if running and state == 'stopped':
if module.check_mode:
module.exit_json(changed=True)
module.run_command('%s stop %s' % (MONIT, name))
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, pipes.quote(name)), use_unsafe_shell=True)
if 'not monitored' in out.lower() or 'stop pending' in out.lower():
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
if running and state == 'unmonitored':
if module.check_mode:
module.exit_json(changed=True)
module.run_command('%s unmonitor %s' % (MONIT, name))
# FIXME: DRY FOLKS!
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, pipes.quote(name)), use_unsafe_shell=True)
if 'not monitored' in out.lower():
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
elif state == 'restarted':
if module.check_mode:
module.exit_json(changed=True)
module.run_command('%s restart %s' % (MONIT, name))
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, name))
if 'initializing' in out.lower() or 'restart pending' in out.lower():
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
elif not running and state == 'started':
if module.check_mode:
module.exit_json(changed=True)
module.run_command('%s start %s' % (MONIT, name))
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, name))
if 'initializing' in out.lower() or 'start pending' in out.lower():
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
elif not running and state == 'monitored':
if module.check_mode:
module.exit_json(changed=True)
module.run_command('%s monitor %s' % (MONIT, name))
rc, out, err = module.run_command('%s summary | grep %s' % (MONIT, name))
if 'initializing' in out.lower() or 'start pending' in out.lower():
module.exit_json(changed=True, name=name, state=state)
module.fail_json(msg=out)
module.exit_json(changed=False, name=name, state=state)
# import module snippets
from ansible.module_utils.basic import *
main()