CSE47 · CI/CD, GitOps & SRE
Incident Timeline & Postmortem
Rebuild the timeline of an outage, find the cause and write a blameless postmortem with actions.
🎯 You will learn to
- Build a timeline
- Find contributing causes
- Write blameless actions
📘 Guided lab
This mission is a guided walkthrough: follow the steps on your own computer or practice account. The in-browser simulator for it is planned for a later release.
✅ Steps & checkpoints
🗺️ Incident timeline
Detection, response and recovery are put on one timeline; the postmortem turns causes into owned actions.
The 2D diagram shows the exact flow, ports and trust boundaries. The 3D scene is a concept view of the same parts; packets travel along the same arrows.
🤔 Think about it
Why are postmortems blameless?
🛡️ Safety & cost
Pipelines run in a simulator. No repository or cluster is changed.
🧹 Cleanup
Nothing to clean up.
📚 Reference documents
- Site Reliability Engineering book · Google SRE
- GitHub Actions documentation · GitHub
- Argo CD documentation · Argo Project
Official sources, checked on 5 Nov 2026. Cloud services change often; check the official page before relying on a feature. All references