Fix giant system log file on ubuntu server:
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I can quickly run out of space due to systemd spamming by /var/log/auth.log file when it cant go to sleep when system lid is closed.

First, edit this file "/etc/systemd/logind.conf"
and add this contents to the file:

HandleLidSwitch=ignore

save the file and delete all /var/log/auth.log files (including auth.log.1 for exsample)
then reboot and the issue should be fixed.


Sources:
https://unix.stackexchange.com/questions/506629/auth-log-systemd-log-spam-suspend-target-is-masked#506630

Date: February 26th 2023.