Cfrtjryk

I have systemd unit file, I know it can be restarted on failure by providing parameters, like :

Restart=always

RestartSec=90

It will restart after 90 seconds whenever it fails,

But, I want to restart only if system time is in between given time-frame, say between 08:00 and 17:00, only then restart.

Is there way to do this via systemd ?

Directly in a service unit file with settings: no.

With a Heath Robinson mechanism: yes, as follows.

• Create two snippet files somewhere, wibble-in-hours.conf with these settings turned on and wibble-out-of-hours.conf with these settings turned off. Don't forget the section heading.


• At any given point, /etc/systemd/system/wibble.service.d/restart.conf is one or the other of these files. The systemd manual (q.v.) explains drop-in directories and snippet files.


• Set up uschedule jobs, cron jobs, or whatever other mechanism you like, to swap the snippet files around at the appropriate times, invoke systemctl daemon-reload, and of course bring the service up if it has terminated during the out of hours period. (Be aware of masking, disabled services, and the fact that some operating systems stop services temporarily during package upgrades, all of which make the test of whether to start the service non-trivial.)