Focused hands-on problems designed to help you hone your DevOps or Server Side skills. Some challenges are more educational, while others are based on real-world scenarios. The platform provides hints and feedback for each challenge, including automated solution checks.
The production "Calendar Todo" web application has been deployed in the prod namespace but all pods are stuck in Pending. Investigate the cluster, identify why the application cannot run, fix the underlying node issue, and verify the app is serving traffic on NodePort 31777.
Practice real-world disaster recovery — restore a deleted production workload by restoring an etcd snapshot and reconfiguring the etcd static pod to use the recovered data directory.
A web application is deployed but the website is not accessible. Investigate and fix the issue.
Configure the kube-scheduler static pod with CPU resource requests based on node allocatable, and disable the NodePort access to the Kubernetes API server so it is only reachable via ClusterIP.