Update systems with zypper and reboot automatically if necessary.
os-update runs daily via systemd timers (so can be configured to any time
you want) and updates the system in a defined way. If the updated packages
require a reboot, either rebootmgr is notified (if running) or a reboot is
done via systemctl reboot.
It can be configured to do a full system upgrade (e.g. zypper dup for
rolling release distributions like openSUSE Tumbleweed),
to update only packages (e.g. zypper up for something like
SUSE Linux Enterprise) or to apply only security updates
(e.g. zypper patch --category security).
Additional there is a tool systemd-mail-status which implements "MAILTO of cron for systemd timer". It is called by systemd-status-mail@.service if the service is configured for the
OnFailure and/or OnSuccess case of a systemd unit. It sends an email to a configureable address with the name of the service, the hostname and the output of systemctl status --full <service>.
UPDATE_CMD="auto" - Specifies how to update the system. Valid values are "auto", "dup", "up" and "security". "auto" will select the best fitting command depending on the OS.
REBOOT_CMD="auto" - Specifies how the system will be rebooted in case an update requires this. Valid values are "auto", "rebootmgr", "reboot" and "none". "auto" will use rebootmgr if installed and running, else systemctl reboot. "none" will only print an informative message that a reboot is required, but not trigger any.
RESTART_SERVICES="yes" - Specifies if after a successful update services should automatically restarted, if they are still using old libraries.
IGNORE_SERVICES_FROM_RESTART="dbus" - Specifies a list of services which should not be restarted
SERVICES_TRIGGERING_REBOOT="dbus" : Specifies a list of services which trigger a reboot
/usr/etc/os-update.conf - Vendor provided configuration file, contains the defaults.
/etc/os-update.conf - Admin provided configuration file, should only contain the variables which were changed by the system administrator compared to the vendor configuration file.