Clean Up Systemd Journal Logs

Fri, 26 Mar 2021 19:15:29 +1100

On my Fedora 33 system, the systemd journal is persistently logged. Over time, the size of the log accumulate quite a lot.

# du -shx journal/
4.2G    journal/

I already cleaned up the log twice in the past, but I already forgot how to do it. To fix my short-term memory, I’m going to document how I do this by following this blog post Clear systemd journal.

The command for cleaning up old logs is journalctl with the option --vaccume-time=OLDER_THAN_TIME. To read more about this, we can check the journactl manual page. (man journalctl and search for vacuume key word.)

Cleaning Up Systemd Journal Logs

Sat, 10 Oct 2020 00:16:23 +1100

“Bad boys, whatcha want. Watcha want, whatcha gonna do when the root is full?”

Actually, what are you gonna do when the journald taking up lots of space? For example, during the operating system upgrade on my desktop, the free space on / is not sufficient.

Error Summary
-------------
Disk Requirements:
   At least 5643MB more space needed on the / filesystem.

So, I check how much space the systemd-journald log was consuming:

Journalctl on Kenno's Open Note

Clean Up Systemd Journal Logs

Cleaning Up Systemd Journal Logs