LFCS Log Management and Monitoring Flashcards
6 cards from real LFCS Certification practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 LFCS Log Management and Monitoring flashcards as text
Which journalctl option shows all log entries from the current boot?
Answer: journalctl -b
journalctl -b filters the journal to only entries from the current (or a numbered past) boot session.
How do you stream new journal entries in real time, similar to `tail -f`?
Answer: journalctl -f
journalctl -f follows the journal and prints new entries as they arrive, just like tail -f does for plain log files.
Which journalctl option filters output to only show entries from a specific systemd unit, e.g., sshd.service?
Answer: -u / --unit=
journalctl -u sshd.service (or --unit=sshd.service) limits output to journal entries generated by that unit.
Where does systemd-journald store persistent journal data by default?
Answer: /var/log/journal/
/var/log/journal/ holds persistent journal files; if this directory does not exist, logs are stored in /run/log/journal/ and lost on reboot.
Which journalctl option shows entries logged after a specified time, such as 'yesterday' or '2 hours ago'?
Answer: --since
journalctl --since='2 hours ago' (or a specific timestamp) limits output to entries logged after that point in time.
Which file contains the configuration for systemd-journald, including disk usage limits?
Answer: /etc/systemd/journald.conf
/etc/systemd/journald.conf controls journald behavior, including SystemMaxUse, Compress, and Storage settings.
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