Demo: rolling back a bad release
On This Lesson 3 topics
This lesson is planned. The outline below lists the topics it will cover. The full lesson has not been published yet.
In this lesson
return quickly to the last good version. Prepares JNR-052-LAB1.
Draft outline details
Step by step
- Deploy version 1.1 with a deliberate bug.
- Notice the failing health check or error in the logs.
- Redeploy the previous image tag (for example
1.0) and time it. - Verify with the health endpoint and a test request.
- Planned mistake: the previous image was deleted by a cleanup rule; keep the last several tags.
- Write the rollback steps into the runbook, aiming for under five minutes.
Practice
Apply this lesson with the module's lab, exercises and quiz.
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