get_sysctl.py

#!/usr/bin/python

# Copyright: (c) 2019, Andrew J. Huffman <ahuffman@redhat.com>
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

ANSIBLE_METADATA = {'metadata_version': '1.1',
                    'status': ['preview'],
                    'supported_by': 'community'}

DOCUMENTATION = '''
---
module: scan_sysctl
short_description: Collects currently set sysctl parameters on a system
version_added: "2.9"
description:
    - "Collects the currently set sysctl parameters on a system at the time the module is run."
    - "This module presents the currently set values as ansible_facts"
author:
    - konrad rzentarzewski (@asquelt)
'''

EXAMPLES = '''
# Collect sysctls and output parsed data
- name: "Collect sysctls"   
  scan_sysctl:
'''

RETURN = '''
ansible_facts.sysctl:
'''

from ansible.module_utils.basic import AnsibleModule
import os, re, subprocess
from os.path import isfile, isdir, join

def main():
    module_args = dict()

    result = dict(
        changed=False,
        original_message='',
        message=''
    )

    module = AnsibleModule(
        argument_spec=module_args,
        supports_check_mode=True
    )

    params = module.params

    def get_sysctl():
        re_disabled = re.compile(r'=\s*$')
        bools = list()
        try:
            out = subprocess.check_output(["/sbin/sysctl -a"], universal_newlines=True, shell=True)
        except:
            out = ''

        for l in out.split('\n'):
            if len(l) > 0 and re_disabled.search(l) is None:
                kv = l.split('=')
                bools.append({ 'key': kv[0].strip(), 'value': kv[1].strip().replace('\t',' ') })
        return bools

    # Do work
    data = get_sysctl()

    # Build output
    result = {'ansible_facts': {'sysctl': data}}

    module.exit_json(**result)


if __name__ == '__main__':
    main()