Focused, hands-on problems for sharpening your DevOps and server-side skills. Some teach specific concepts while others mirror real-world scenarios. Every challenge includes hints, feedback, and automated solution checks.
A deployment is failing because the application cannot load its TLS certificate. Create the missing secret and mount it into the deployment so the Flask app can serve TLS traffic.
A Pod is failing in the japan namespace. Investigate the issue, identify the root cause, and fix it to get the Pod running.
Two monitoring applications are failing due to missing RBAC permissions. Fix both by creating ServiceAccounts, Roles, and RoleBindings.
A Deployment is failing because its ServiceAccount lacks permissions to list pods. Fix the issue by binding an existing Role to the ServiceAccount.
Debug and fix a Pod that fails to deploy due to resource constraint violations in a namespace with ResourceQuota and LimitRange policies.