rebootmgr

RebootManager is a dbus service to execute a controlled reboot after updates in a defined maintenance window.

If you updated a system with e.g. transactional updates or a kernel update was applied, you can tell rebootmgrd with rebootmgrctl, that the machine should be reboot at the next possible time. This can either be immediately or during a defined maintenance window or.

Reboot Strategies

rebootmgr supports different strategies, when a reboot should be done:

• instantly - reboot immediately when the signal arrives.
• maint-window - reboot only during a specified maintenance window. If no window is specified, reboot immediately.
• best-effort - this is the default. If a maintenance window is specified, use maint-window. If no maintenance window is specified, reboot immediately (instantly).
• off - rebootmgr continues to run, but ignores all signals to reboot. Setting the strategy to off does not clear the maintenance window. If rebootmgr is enabled again, it will continue to use the old specified maintenance window.

Configuration example

File /etc/rebootmgr.conf

[rebootmgr]
window-start=3:30
window-duration=1h30m
strategy=best-effort

Checking if a reboot is requested

$ sudo rebootmgrctl status
Status: Reboot not requested