salt.modules.minion#

Module to provide information about minions and handle killing and restarting minions

salt.modules.minion.kill(timeout=15)#

Kill the salt minion.

timeout

int seconds to wait for the minion to die.

If you have a monitor that restarts salt-minion when it dies then this is a great way to restart after a minion upgrade.

CLI Example:

salt minion[12] minion.kill

minion1:
    ----------
    killed:
        7874
    retcode:
        0
minion2:
    ----------
    killed:
        29071
    retcode:
        0

The result of the salt command shows the process ID of the minions and the results of a kill signal to the minion in as the retcode value: 0 is success, anything else is a failure.

salt.modules.minion.list_()#

Return a list of accepted, denied, unaccepted and rejected keys. This is the same output as salt-key -L

CLI Example:

salt 'master' minion.list
salt.modules.minion.restart(systemd=True, win_service=True, schedule_retry=False, retry_delay=180)#

Restart the salt minion.

The method to restart the minion will be chosen as follows:

If minion_restart_command is set in the minion configuration then the command specified will be used to restart the minion.

If the minion is running as a systemd service then the minion will be restarted using the systemd_service module, unless systemd is set to False

If the minion is running as a Windows service then the minion will be restarted using the win_service module, unless win_service is set to False

If the salt-minion process is running in daemon mode (the -d argument is present in argv) then the minion will be killed and restarted using the same command line arguments, if possible.

If the salt-minion process is running in the foreground (the -d argument is not present in argv) then the minion will be killed but not restarted. This behavior is intended for minion processes that are managed by a process supervisor.

systemd

If set to False then systemd will not be used to restart the minion. Defaults to True.

win_service

If set to False then the Windows service manager will not be used to restart the minion. Defaults to True.

schedule_retry

If set to True then a scheduled job will be added to start the minion if it has failed to restart after the retry_delay

retry_delay

The amount of time to wait before attempting to start the minion if it has failed to restart. Defaults to 180 seconds.

CLI Examples:

salt minion[12] minion.restart

minion1:
----------
    comment:
        - Using systemctl to restart salt-minion
        - Service restart successful
    killed:
        None
    restart:
        ----------
    retcode:
        0
    service_restart:
        ----------
        result:
            True
minion2:
    ----------
    comment:
        - Using windows service manager to restart salt-minion
        - Service restart successful
    killed:
        None
    restart:
        ----------
    retcode:
        0
    service_restart:
        ----------
        result:
            True

The result shows that minion1 was restarted using systemd and minion2 was restarted using the Windows service manager. The service_restart field indicates the result of the service restart operation. The killed field is None because the minion was restarted using the service manager and not by killing the process. The restart field is empty because the minion was restarted using the service manager and not by running the command line arguments of the minion process.

salt minion[12] minion.restart

minion1:
    ----------
    comment:
        - Restart using process argv:
        -     /home/omniture/install/bin/salt-minion
        -     -d
        -     -c
        -     /home/omniture/install/etc/salt
    killed:
        10070
    restart:
        ----------
        stderr:
        stdout:
    retcode:
        0
minion2:
    ----------
    comment:
        - Using configuration minion_restart_command:
        -     /home/omniture/install/bin/salt-minion
        -     --not-an-option
        -     -d
        -     -c
        -     /home/omniture/install/etc/salt
        - Restart failed
    killed:
        10896
    restart:
        ----------
        stderr:
            Usage: salt-minion

            salt-minion: error: no such option: --not-an-option
        stdout:
    retcode:
        64

The result of the command shows the process ID of minion1 that is shutdown (killed) and the results of the restart. If there is a failure in the restart it will be reflected in a non-zero retcode and possibly output in the stderr and/or stdout values along with addition information in the comment field as is demonstrated with minion2.

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