Systemd timer every 15 minutes

systemd

I'm trying to make a systemd timer that runs every 15 minutes. Right now I have:

  • timer-fifteen.timer:

    [Unit]
Description=15min timer

[Timer]
OnBootSec=0min
OnCalendar=*:*:0,15,30,45
Unit=timer-fifteen.target

[Install]
WantedBy=basic.target

  • timer-fifteen.target:

    [Unit]
Description=15min Timer Target
StopWhenUnneeded=yes

This runs over and over again without stopping. Does it need to be *:0,15,30,45:* instead? How can I make this work?

Best Answer

Your syntax translates to every 15 seconds, if you want every 15 minutes, IMO the most readable way is:

OnCalendar=*:0/15

An answer most similar to what you use in your question is:

OnCalendar=*:0,15,30,45

More information:

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