Add the aix_inittab module to be able to modify the inittab at AIX systems (#21511)
* Added the aix_inittab module to be able to modify the inittab at AIX systems. * fixed identation errors * fixed identations and trailing whitespace changed if conditions * repaired tab-identation * adjusted to long line and identation * Adjusted the yaml in the example documentation * Adjusted the documentation yaml * Repaired return yaml * repaired typo * Removed unnecessary parameters from comment changed action to state, and changed the way to call this module changed proccessaction to action * adjusted result['warnings'] to module.warn() * adjusted the documentation * changed warning to failed ran module against autopep8 * added check_mode * fixed typo * changed description and short description, to be able to push again after a failure at shippable
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molekuul
Brian Coca
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1 changed files with 248 additions and 0 deletions
248
lib/ansible/modules/system/aix_inittab.py
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248
lib/ansible/modules/system/aix_inittab.py
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#!/usr/bin/python
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# -*- coding: utf-8 -*-
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# (c) 2017, Joris Weijters <joris.weijters@gmail.com>
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#
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# This file is part of Ansible
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#
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# Ansible 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 by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# Ansible is distributed in the hope that it will be useful,
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# but 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 Ansible. If not, see <http://www.gnu.org/licenses/>.
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#
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ANSIBLE_METADATA = {'status': ['preview'],
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'supported_by': 'community',
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'version': '1.0'}
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DOCUMENTATION = '''
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---
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author: "Joris Weijters (@molekuul)"
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module: aix_inittab
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short_description: Manages the inittab on AIX.
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description:
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- Manages the inittab on AIX.
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version_added: "2.3"
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options:
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name:
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description: Name of the inittab entry.
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required: True
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alias: service
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type: string
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runlevel:
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description: Runlevel of the entry.
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required: True
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type: string
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action:
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description: Action what the init has to do with this entry.
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required: True
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choices: [
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'respawn',
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'wait',
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'once',
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'boot',
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'bootwait',
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'powerfail',
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'powerwait',
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'off',
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'hold',
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'ondemand',
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'initdefault',
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'sysinit'
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]
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type: string
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command:
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description: What command has to run.
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required: True
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type: string
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insertafter:
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description: After which inittabline should the new entry inserted.
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type: string
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state:
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description: Whether the entry should be present or absent in the inittab file
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type: string
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choices: [ "present", "absent" ]
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default: present
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notes:
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- The changes are persistent across reboots.
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- You need root rights to read or adjust the inittab with the lsitab, chitab,
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mkitab or rmitab commands.
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- tested on AIX 7.1.
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requirements: [ 'itertools']
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'''
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EXAMPLES = '''
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# Add service startmyservice to the inittab, directly after service existingservice.
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- name: Add startmyservice to inittab
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aix_inittab:
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name: startmyservice
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runlevel: 4
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action: once
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command: "echo hello"
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insertafter: existingservice
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state: present
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become: yes
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# Change inittab enrty startmyservice to runlevel "2" and processaction "wait".
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- name: Change startmyservice to inittab
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aix_inittab:
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name: startmyservice
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runlevel: 2
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action: wait
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command: "echo hello"
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state: present
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become: yes
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# Remove inittab entry startmyservice.
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- name: remove startmyservice from inittab
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aix_inittab:
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name: startmyservice
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runlevel: 2
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action: wait
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command: "echo hello"
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state: absent
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become: yes
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'''
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RETURN = '''
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# description: The result is deliverd in an dictionary.
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- return:
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changed: true
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name: "startmyservice"
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msg: "changed inittab entry startmyservice"
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'''
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# Import necessary libraries
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import itertools
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from ansible.module_utils.basic import AnsibleModule
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# end import modules
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# start defining the functions
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def check_current_entry(module):
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# Check if entry exists, if not return False in exists in return dict,
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# if true return True and the entry in return dict
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existsdict = {'exist': False}
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lsitab = module.get_bin_path('lsitab')
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(rc, out, err) = module.run_command([lsitab, module.params['name']])
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if rc == 0:
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keys = ('name', 'runlevel', 'action', 'command')
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values = out.split(":")
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# strip non readable characters as \n
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values = map(lambda s: s.strip(), values)
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existsdict = dict(itertools.izip(keys, values))
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existsdict.update({'exist': True})
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return existsdict
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def main():
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# initialize
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module = AnsibleModule(
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argument_spec=dict(
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name=dict(required=True, type='str', aliases=['service']),
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runlevel=dict(required=True, type='str'),
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action=dict(choices=[
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'respawn',
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'wait',
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'once',
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'boot',
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'bootwait',
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'powerfail',
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'powerwait',
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'off',
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'hold',
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'ondemand',
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'initdefault',
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'sysinit'
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], type='str'),
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command=dict(required=True, type='str'),
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insertafter=dict(type='str'),
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state=dict(choices=[
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'present',
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'absent',
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], required=True, type='str'),
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),
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supports_check_mode=True,
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)
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result = {
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'name': module.params['name'],
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'changed': False,
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'msg': ""
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}
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# Find commandline strings
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mkitab = module.get_bin_path('mkitab')
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rmitab = module.get_bin_path('rmitab')
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chitab = module.get_bin_path('chitab')
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rc = 0
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# check if the new entry exists
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current_entry = check_current_entry(module)
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# if action is install or change,
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if module.params['state'] == 'present':
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# create new entry string
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new_entry = module.params['name'] + ":" + module.params['runlevel'] + \
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":" + module.params['action'] + ":" + module.params['command']
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# If current entry exists or fields are different(if the entry does not
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# exists, then the entry wil be created
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if (not current_entry['exist']) or (
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module.params['runlevel'] != current_entry['runlevel'] or
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module.params['action'] != current_entry['action'] or
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module.params['command'] != current_entry['command']):
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# If the entry does exist then change the entry
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if current_entry['exist']:
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if not module.check_mode:
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(rc, out, err) = module.run_command([chitab, new_entry])
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if rc != 0:
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module.fail_json(
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msg="could not change inittab", rc=rc, err=err)
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result['msg'] = "changed inittab entry" + " " + current_entry['name']
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result['changed'] = True
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# If the entry does not exist create the entry
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elif not current_entry['exist']:
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if module.params['insertafter']:
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if not module.check_mode:
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(rc, out, err) = module.run_command(
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[mkitab, '-i', module.params['insertafter'], new_entry])
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else:
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if not module.check_mode:
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(rc, out, err) = module.run_command(
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[mkitab, new_entry])
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if rc != 0:
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module.fail_json(
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"could not adjust inittab", rc=rc, err=err)
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result['msg'] = "add inittab entry" + " " + module.params['name']
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result['changed'] = True
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elif module.params['state'] == 'absent':
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# If the action is remove and the entry exists then remove the entry
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if current_entry['exist']:
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if not module.check_mode:
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(rc, out, err) = module.run_command(
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[rmitab, module.params['name']])
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if rc != 0:
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module.fail_json(
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msg="could not remove entry grom inittab)", rc=rc, err=err)
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result['msg'] = "removed inittab entry" + " " + current_entry['name']
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result['changed'] = True
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module.exit_json(**result)
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if __name__ == '__main__':
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main()
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