2023-12-29            HONK! MY FIRST SYSTEMD TIMER


Along with the update of Honk[1] to version 1.2[2], I add a systemd timer
to keep its database lean.

I add two files in /etc/systemd/system:
• honk-daily-cleanup.timer
• honk-daily-cleanup.service

honk-daily-cleanup.timer looks like this:

,----
|  [Unit]
|  Description="Timer for the daily honk database cleanup"
|  
|  [Timer]
|  Unit=honk-database-cleanup-timer.service
|  OnBootSec=30min
|  OnUnitActiveSec=1day
|  
|  [Install]
|  WantedBy=timers.target
`----

And honk-daily-cleanup.service is:

,----
|  [Unit]
|  Description="Honk database cleanup" 
|  
|  [Service]
|  Type=simple
|  WorkingDirectory=/usr/local/bin/honk
|  ExecStart=/usr/local/bin/honk/honk -datadir /var/lib/honk cleanup
|  User=honk
|  Group=honk
`----

I then add the timer like this:

,----
|  enable honk-daily-cleanup.timer
`----


And this will run the service daily.

,----
|  systemctl status honk-daily-cleanup.timer
`----

will show something like:

,----
|  ● honk-daily-cleanup.timer - "Timer for the daily honk database cleanup"
|       Loaded: loaded (/etc/systemd/system/honk-daily-cleanup.timer; enabled; preset: enabled)
|       Active: active (waiting) since Wed 2023-12-27 11:12:08 CET; 1 day 22h ago
|      Trigger: Fri 2023-12-29 11:12:11 CET; 1h 58min left
|     Triggers: ● honk-daily-cleanup.service
|  
|  systemd[1]: Started honk-daily-cleanup.timer - "Timer for the daily honk database cleanup".
`----

And

,----
|  systemctl status honk-daily-cleanup.service 
`----

will show something like:

,----
|  ○ honk-daily-cleanup.service - "Honk database cleanup"
|       Loaded: loaded (/etc/systemd/system/honk-daily-cleanup.service; static)
|       Active: inactive (dead) since Thu 2023-12-28 11:12:38 CET; 22h ago
|     Duration: 27.498s
|  TriggeredBy: ● honk-daily-cleanup.timer
|      Process: 2989903 ExecStart=/usr/local/bin/honk/honk -datadir /var/lib/honk cleanup (code=exited,
|  status=0/SUCCESS)
|     Main PID: 2989903 (code=exited, status=0/SUCCESS)
|          CPU: 1.038s
|  
|  Dec 28 11:12:11 systemd[1]: Started honk-daily-cleanup.service - "Honk database cleanup".
|  Dec 28 11:12:38 systemd[1]: honk-daily-cleanup.service: Deactivated successfully.
|  Dec 28 11:12:38 systemd[1]: honk-daily-cleanup.service: Consumed 1.038s CPU time.
`----



[1]: https://humungus.tedunangst.com/r/honk

[2]: https://humungus.tedunangst.com/r/honk/d