NOC Lab — Reading the Journal

operator@tide-noc-01: ~

Shift brief

You are on the overnight ops desk at Tideline Networks. At 02:14 the log-collector host tide-noc-01 — the box that receives syslog from the edge routers — rebooted on its own. Before you escalate, pull its journal so you can see what the kernel reported on this boot, and skim the whole journal newest entries first.

Tasks

Show the kernel message log for the current boot. Not yet complete.
Show the journal in reverse order — newest entries first. Not yet complete.

Check your understanding

Which journalctl option restricts output to kernel ring-buffer messages?

Which option prints entries in reverse, with the newest first?

By default, the kernel-only option limits output to which boot?

Callsign 0 / 5 complete