ansible.builtin.reboot - Reboot a machine

This module is part of ansible-base and included in all Ansible installations. In most cases, you can use the short module name reboot even without specifying the collections: keyword. Despite that, we recommend you use the FQCN for easy linking to the module documentation and to avoid conflicting with other collections that may have the same module name.

New in version 2.7: of ansible.builtin

• Synopsis
• Parameters
• Notes
• See Also
• Examples
• Return Values

Synopsis

• Reboot a machine, wait for it to go down, come back up, and respond to commands.

• For Windows targets, use the ansible.windows.win_reboot module instead.

This module has a corresponding action plugin.

Parameters

Parameter	Choices/Defaults	Comments
boot_time_command string added in 2.10 of ansible.builtin	Default: "cat /proc/sys/kernel/random/boot_id"	Command to run that returns a unique string indicating the last time the system was booted. Setting this to a command that has different output each time it is run will cause the task to fail.
connect_timeout integer		Maximum seconds to wait for a successful connection to the managed hosts before trying again. If unspecified, the default setting for the underlying connection plugin is used.
msg string	Default: "Reboot initiated by Ansible"	Message to display to users before reboot.
post_reboot_delay integer	Default: 0	Seconds to wait after the reboot command was successful before attempting to validate the system rebooted successfully. This is useful if you want wait for something to settle despite your connection already working.
pre_reboot_delay integer	Default: 0	Seconds to wait before reboot. Passed as a parameter to the reboot command. On Linux, macOS and OpenBSD, this is converted to minutes and rounded down. If less than 60, it will be set to 0. On Solaris and FreeBSD, this will be seconds.
reboot_timeout integer	Default: 600	Maximum seconds to wait for machine to reboot and respond to a test command. This timeout is evaluated separately for both reboot verification and test command success so the maximum execution time for the module is twice this amount.
search_paths list / elements=string	Default: ["/sbin", "/usr/sbin", "/usr/local/sbin"]	Paths to search on the remote machine for the shutdown command. Only these paths will be searched for the shutdown command. PATH is ignored in the remote node when searching for the shutdown command.
test_command string	Default: "whoami"	Command to run on the rebooted host and expect success from to determine the machine is ready for further tasks.

Notes

• PATH is ignored on the remote node when searching for the shutdown command. Use search_paths to specify locations to search if the default paths do not work.

See Also

See also

ansible.windows.win_reboot

The official documentation on the ansible.windows.win_reboot module.

Examples

- name: Unconditionally reboot the machine with all defaults
  reboot:

- name: Reboot a slow machine that might have lots of updates to apply
  reboot:
    reboot_timeout: 3600

- name: Reboot a machine with shutdown command in unusual place
  reboot:
    search_paths:
     - '/lib/molly-guard'

Return Values

Common return values are documented here, the following are the fields unique to this module:

Key	Returned	Description
elapsed integer	always	The number of seconds that elapsed waiting for the system to be rebooted. Sample: 23
rebooted boolean	always	true if the machine was rebooted Sample: True

Authors

• Matt Davis (@nitzmahone)

• Sam Doran (@samdoran)

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