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Filename : reboot.py
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# -*- coding: utf-8 -*-
# Copyright: (c) 2018, Ansible Project
# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type


DOCUMENTATION = r'''
module: reboot
short_description: Reboot a machine
notes:
  - C(PATH) is ignored on the remote node when searching for the C(shutdown) command. Use C(search_paths)
    to specify locations to search if the default paths do not work.
description:
    - Reboot a machine, wait for it to go down, come back up, and respond to commands.
    - For Windows targets, use the M(ansible.windows.win_reboot) module instead.
version_added: "2.7"
options:
  pre_reboot_delay:
    description:
      - 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.
    type: int
    default: 0
  post_reboot_delay:
    description:
      - 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.
    type: int
    default: 0
  reboot_timeout:
    description:
      - 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.
    type: int
    default: 600
  connect_timeout:
    description:
      - 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.
    type: int
  test_command:
    description:
      - Command to run on the rebooted host and expect success from to determine the machine is ready for
        further tasks.
    type: str
    default: whoami
  msg:
    description:
      - Message to display to users before reboot.
    type: str
    default: Reboot initiated by Ansible

  search_paths:
    description:
      - Paths to search on the remote machine for the C(shutdown) command.
      - I(Only) these paths will be searched for the C(shutdown) command. C(PATH) is ignored in the remote node when searching for the C(shutdown) command.
    type: list
    elements: str
    default: ['/sbin', '/bin', '/usr/sbin', '/usr/bin', '/usr/local/sbin']
    version_added: '2.8'

  boot_time_command:
    description:
      - 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.
    type: str
    default: 'cat /proc/sys/kernel/random/boot_id'
    version_added: '2.10'

  reboot_command:
    description:
      - Command to run that reboots the system, including any parameters passed to the command.
      - Can be an absolute path to the command or just the command name. If an absolute path to the
        command is not given, C(search_paths) on the target system will be searched to find the absolute path.
      - This will cause C(pre_reboot_delay), C(post_reboot_delay), and C(msg) to be ignored.
    type: str
    default: '[determined based on target OS]'
    version_added: '2.11'
extends_documentation_fragment:
  -  action_common_attributes
  -  action_common_attributes.flow
attributes:
    action:
        support: full
    async:
        support: none
    bypass_host_loop:
        support: none
    check_mode:
        support: full
    diff_mode:
        support: none
    platform:
        platforms: posix
seealso:
- module: ansible.windows.win_reboot
author:
    - Matt Davis (@nitzmahone)
    - Sam Doran (@samdoran)
'''

EXAMPLES = r'''
- name: Unconditionally reboot the machine with all defaults
  ansible.builtin.reboot:

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

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

- name: Reboot machine using a custom reboot command
  ansible.builtin.reboot:
    reboot_command: launchctl reboot userspace
    boot_time_command: uptime | cut -d ' ' -f 5

'''

RETURN = r'''
rebooted:
  description: true if the machine was rebooted
  returned: always
  type: bool
  sample: true
elapsed:
  description: The number of seconds that elapsed waiting for the system to be rebooted.
  returned: always
  type: int
  sample: 23
'''