Docker · hands-on lab
Docker Lab 17: Rolling Updates and Rollbacks in Swarm
Update a service image with parallelism, delay and failure action, watch the rollout and roll back.
- 40 minutesTime in the lab
- AdvancedLevel
- 5 tasksChecked automatically
- CertificateVerifiable link when you finish
The situation
The shop service runs nginx 1.26. You move it to 1.27 without downtime, then practise a rollback.
What you will do
- Guided exercise: Current imagequestion
- Guided exercise: Update policy
- Guided exercise: Roll out the new image
- Lab: Roll back
- Orderquestion
How it works
The lab opens in your browser: a real terminal or desktop, nothing to install. Work through the tasks, press Check after each one and the portal verifies your work. Stuck? Ask for a hint. Finish every task and you get a certificate page with its own verification link for LinkedIn or your CV.