Microservices shop, mission 1 of 7
Find each other
intermediate, about 8 minutes, in the Kubernetes Simulator
Start mission
Free in your browser, nothing to install.
The briefing
The shop is three deployments: frontend (nginx), and two APIs it calls, catalog and cart. Pods come and go and their IPs with them, so nothing should call a pod by address.
A Service gives a set of pods one stable name and IP. Cluster DNS answers that name from any pod — catalog, or in full catalog.default.svc.cluster.local. catalog listens on port 8080, and it serves its items at /api/catalog/items.
kubectl exec deploy/frontend -- curl … runs curl inside a frontend pod, where the cluster's DNS is.
What you'll do
- Give catalog a Service on port 80
- Fetch the items from a frontend pod by name
- Bonus star: Look the name up the way curl does: getent hosts catalog
The mission checks the cluster, not your keystrokes: any fix that works, passes.
More Microservices shop missions
- 1. Find each other
- 2. Wrong door
- 3. One front door
- 4. Need to know
- 5. Outbound only
- 6. A fixed address
- 7. Moved out