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I have a service that runs a python script:

[Unit] Description="Daily python service" [Service] WorkingDirectory=/home/ubuntu/python_project/ ExecStartPre=/bin/bash -c 'truncate -s 0 /var/log/project.log /var/log/project_error.log' ExecStart=/home/ubuntu/.conda/envs/test/bin/python -u main.py StandardOutput=append:/var/log/project.log StandardError=append:/var/log/project_error.log [Install] WantedBy=multi-user.target

I want this to run daily at a specific time:

[Unit] Description=Run service daily [Timer] OnCalendar=*-*-* 12:00:00 Persistent=true [Install] WantedBy=timers.target

When I reload the daemon, enable the timer, and start the timer, it runs the first day. But after the first day it stops running automatically, unless I manually stop the service.

Why is this happening? And how do I get around this?

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Here's an example of how I do something similar. In this example, I call the service every hour, so adjust yours as necessary:

/etc/systemd/system/btrfsbk.service

[Unit] Description=Create mirror of current state of all BTRFS snapshots [Service] Type=simple ExecStart=/usr/local/sbin/btrfsbk

/etc/systemd/system/btrfsbk.timer

[Unit] Description=Create mirror of current state of all BTRFS snapshots [Timer] Unit=btrfsbk.service OnBootSec=15min OnUnitActiveSec=60min AccuracySec=1us Persistent=True [Install] WantedBy=timers.target

Notice how I do not have an [Install] section in the .service file; there's no need to enable this as it will be activated by the timer.

For another example, check out the fstrim service/timer files.

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  • Still when I check the status, the trigger field is N/A. Commented Apr 26, 2024 at 3:24
  • Status of what - the service or the timer? Please add the results of your findings to your question, please. Commented Apr 26, 2024 at 15:55

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