[systemd-devel] How to silence systemd's "Starting", "Succeeded" and "Started" notifications?

[Lennart Poettering]

On Sa, 16.05.20 10:31, Jaime (enopatch at gmail.com) wrote:

> I have a simple non-looping shell script that I call every 60 seconds
> using a systemd service and associated timer. My shell script produces
> no output at all. My journal looks like this:
>
> May 15 03:43:00 server systemd[450]: Starting updater.service...
> May 15 03:43:01 server systemd[450]: updater.service: Succeeded.
> May 15 03:43:01 server systemd[450]: Started updater.service.
> May 15 03:44:00 server systemd[450]: Starting updater.service...
> May 15 03:44:01 server systemd[450]: updater.service: Succeeded.
> May 15 03:44:01 server systemd[450]: Started updater.service.
> May 15 03:45:00 server systemd[450]: Starting updater.service...
> May 15 03:45:01 server systemd[450]: updater.service: Succeeded.
> May 15 03:45:01 server systemd[450]: Started updater.service.
> May 15 03:46:00 server systemd[450]: Starting updater.service...
> May 15 03:46:01 server systemd[450]: updater.service: Succeeded.
> May 15 03:46:01 server systemd[450]: Started updater.service.
> May 15 03:47:00 server systemd[450]: Starting updater.service...
> May 15 03:47:01 server systemd[450]: updater.service: Succeeded.
> May 15 03:47:01 server systemd[450]: Started updater.service.
> May 15 03:48:00 server systemd[450]: Starting updater.service...
> May 15 03:48:01 server systemd[450]: updater.service: Succeeded.
> May 15 03:48:01 server systemd[450]: Started updater.service.
>
> Is it possible to stop these notification lines from being entered
> into the journal? I understand that one alternative is to just rewrite
> the script to loop forever ("while true ; do blah ; done"-style) and
> get rid of the timer, but I wanted to know whether there is any
> built-in log-level style control for these systemd-generated messages.

systemd logs about everything it does. If you don#t want that, you can
turn it of. Set "systemd.log_level=notice" or so on the kernel
cmdline, or LogLevel=notice in /etc/systemd/system.conf

But of course, thigns will be very quiet then...

Lennart

--
Lennart Poettering, Berlin