https://lead-devops.blackdevhub.online/en/tags/logs/Recent content in Logs on Lead DevOpsHugoen-USThu, 17 Sep 2026 00:00:00 +0000https://lead-devops.blackdevhub.online/en/posts/journalctl-filtry-i-follow/Thu, 17 Sep 2026 00:00:00 +0000https://lead-devops.blackdevhub.online/en/posts/journalctl-filtry-i-follow/<p>Systemd&rsquo;s journal is the first place to look when a service crashes or a node starts burning CPU. <code>journalctl</code> does far more than dump the entire log in sequence: it can filter by units, priorities, time windows, and stream in real time. Below is the working set I use daily.</p> <h2 id="follow-in-real-time">Follow in real time </h2> <p>Behavior similar to <code>tail -f</code>, but aware of journald&rsquo;s structured format:</p>