sysctl – Manage entries in sysctl.conf.

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 - / required		The dot-separated path (aka 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 -	Choices: present ← absent	Whether the entry should be present or absent in the sysctl file.
sysctl_file -	Default: "/etc/sysctl.conf"	Specifies the absolute path to sysctl.conf, if not /etc/sysctl.conf.
sysctl_set boolean added in 1.5	Choices: no ← yes	Verify token value with the sysctl command and set with -w if necessary
value -		Desired value of the sysctl key. aliases: val

Examples

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

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

# Set kernel.panic to 3 in /tmp/test_sysctl.conf
- 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
- 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
- sysctl:
    name: net.ipv4.ip_forward
    value: 1
    sysctl_set: yes
    state: present
    reload: yes

Status

• This module is guaranteed to have no backward incompatible interface changes going forward. [stableinterface]
• This module is maintained by the Ansible Core Team. [core]

Red Hat Support

More information about Red Hat’s support of this module is available from this Red Hat Knowledge Base article.

Authors

• David CHANIAL (@davixx) <david.chanial@gmail.com>

Hint

If you notice any issues in this documentation you can edit this document to improve it.