ansible.posix.sysctl – Manage entries in sysctl.conf.

Note

This plugin is part of the ansible.posix collection (version 1.3.0).

You might already have this collection installed if you are using the ansible package. It is not included in ansible-core. To check whether it is installed, run ansible-galaxy collection list.

To install it, use: ansible-galaxy collection install ansible.posix.

To use it in a playbook, specify: ansible.posix.sysctl.

New in version 1.0.0: of ansible.posix

Synopsis

  • This module manipulates sysctl entries and optionally performs a /sbin/sysctl -p after changing them.

Parameters

Parameter Choices/Defaults Comments
ignoreerrors
boolean
    Choices:
  • no
  • yes
Use this option to ignore errors about unknown keys.
name
string / required
The dot-separated path (also known as key) specifying the sysctl variable.

aliases: key
reload
boolean
    Choices:
  • no
  • yes
If yes, performs a /sbin/sysctl -p if the sysctl_file is updated. If no, does not reload sysctl even if the sysctl_file is updated.
state
string
    Choices:
  • present
  • absent
Whether the entry should be present or absent in the sysctl file.
sysctl_file
path
Default:
"/etc/sysctl.conf"
Specifies the absolute path to sysctl.conf, if not /etc/sysctl.conf.
sysctl_set
boolean
    Choices:
  • no
  • yes
Verify token value with the sysctl command and set with -w if necessary
value
string
Desired value of the sysctl key.

aliases: val

Examples

# Set vm.swappiness to 5 in /etc/sysctl.conf
- ansible.posix.sysctl:
    name: vm.swappiness
    value: '5'
    state: present

# Remove kernel.panic entry from /etc/sysctl.conf
- ansible.posix.sysctl:
    name: kernel.panic
    state: absent
    sysctl_file: /etc/sysctl.conf

# Set kernel.panic to 3 in /tmp/test_sysctl.conf
- ansible.posix.sysctl:
    name: kernel.panic
    value: '3'
    sysctl_file: /tmp/test_sysctl.conf
    reload: no

# Set ip forwarding on in /proc and verify token value with the sysctl command
- ansible.posix.sysctl:
    name: net.ipv4.ip_forward
    value: '1'
    sysctl_set: yes

# Set ip forwarding on in /proc and in the sysctl file and reload if necessary
- ansible.posix.sysctl:
    name: net.ipv4.ip_forward
    value: '1'
    sysctl_set: yes
    state: present
    reload: yes

Authors

  • David CHANIAL (@davixx)

© 2012–2018 Michael DeHaan
© 2018–2021 Red Hat, Inc.
Licensed under the GNU General Public License version 3.
https://docs.ansible.com/ansible/latest/collections/ansible/posix/sysctl_module.html