Apache Logs That Survive 3am: access.log, error.log, Custom LogFormat
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In this video, we dive deep into professional IT workflows to help you learn faster and code smarter. Whether you're a DevOps engineer, a SysAdmin, or a curious developer, our "No Filler" approach ensures you get the facts without the fluff.
When something breaks at 3am, Apache logs are your only friend. After this lesson, your logs answer questions instead of just listing requests.
Most Apache installs use the default "combined" log format. It's fine for casual reading, useless for incident response. After this lesson you ship a custom LogFormat that includes the fields you NEED — request time, upstream time, the user's session ID — so 3am debugging is "I see exactly when this slowed down" instead of "I have to grep for an hour."
What's covered:
✓ access.log vs error.log — what goes where
✓ The "combined" default LogFormat decoded
✓ The 8 LogFormat directives you'll actually use
✓ Custom LogFormat for production: time-to-serve, upstream timings, session tracking
✓ CustomLog vs TransferLog (and why you only need CustomLog)
✓ LogLevel — alert, error, warn, info, debug, trace1-8
✓ Rotating logs (logrotate config that ships with apache2)
✓ The "where IS my access.log?" gotcha (per-vhost logs)
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⏱️ CHAPTERS
00:00 Why default Apache logs aren't enough
01:30 access.log vs error.log
02:30 The "combined" format decoded
03:00 The 8 LogFormat directives you'll use
03:30 Production LogFormat — what to add
04:00 LogLevel deep dive
05:30 Per-vhost logs — the location gotcha
06:30 logrotate basics
#apache #linux #logging
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