rsyslog basics, the systemd journal, keeping logs from filling the disk, and shipping them somewhere central
rsyslog, facilities, severity levels, and the key log files — why logging matters and where to find things.
Read Part 1 →A deep dive into the systemd journal — the modern structured logging system and how to query it.
Read Part 2 →Configuration and troubleshooting — why logrotate matters and how to keep logs from filling up the disk.
Read Part 3 →rsyslog forwarding and log aggregation — why centralizing logs matters and how to set it up.
Read Part 4 →