Here's a preview from my zine, The Pocket Guide to Debugging! If you want to see more comics like this, sign up for my saturday comics newsletter or browse more comics!
read the transcript!
- filter out irrelevant lines (for example with grep -v)
- find 1 failed request and search for that request’s ID to get all the logs for that request
- build a timeline: copy and paste log lines (and your interpretations!) into a document
- if you see a suspicious log line, search to make sure it doesn’t also happen during normal operation
- if there’s a cascade of errors, find the first error that started the problems
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