Chapter 14: Logging and Light Observability
14.11 Troubleshooting table
| Symptom | Likely cause | What to try |
|---|---|---|
docker logs empty |
App logs to a file inside container only | exec and find file; or fix app to stdout |
| CloudWatch empty | Wrong region / IAM / agent down | Verify identity, region, agent status |
| Too much noise | INFO flood | Sample; raise level; filter in query |
| Cannot find error | Wrong time window / timezone | Align IST; widen then narrow |
| Disk full again | Rotate/ship failed | Monitoring alert + fix retention/rotate |