https://blog.margrop.net/en/tag/logs/ Recent content in Logs on Margrop Blog Hugo -- gohugo.io en-US Wed, 29 Jul 2026 20:30:00 +0800 https://blog.margrop.net/en/post/%E7%9C%8B%E6%97%A5%E5%BF%97-log-reading-art/ Wed, 29 Jul 2026 20:30:00 +0800 https://blog.margrop.net/en/post/%E7%9C%8B%E6%97%A5%E5%BF%97-log-reading-art/ <blockquote> <p><strong>The short conclusion</strong></p> <p>Computers rarely fail without leaving a trace. A disk gradually fills up. A service emits warnings before it exits. A DNS lookup fails before a browser reports a timeout. A process starts and stops several times before a user sees a broken page. The practical skill is not to reinstall everything after seeing a red error. It is to ask five detective questions: <strong>When did it happen? Which object was involved? How serious was it? What happened before and after it? Can the result be verified after the fix?</strong></p> <p>This article explains logs as a computer’s diary instead of presenting them as mysterious engineering jargon. It uses real collection output from Windows 11, Ubuntu 26.04, and macOS 26, provides three native read-only collectors, and shows how to give the same evidence-first workflow to an Agent. A child should understand most of the story; an engineer can still reuse the commands and the reasoning pattern.</p> </blockquote>