How to write troubleshooting notes that others can replay
Updated Feb 2026 • Writing / Docs
The replayable format
- Symptom: what is failing and how you observed it
- Environment: version, node names, network zone, time
- Hypotheses: top 3 likely causes
- Tests: ordered steps with expected result
- Observed: what actually happened
- Root cause: confirmed, not guessed
- Fix: exact change made
- Verification: proof the fix works
- Prevention: what to do next time
One rule
If a future engineer cannot repeat it, it is not done.