Challenges

Focused, hands-on DevOps and server-side problems with hints, feedback, and automated solution checks.

Challenge

CKA Practice: Recover a NotReady Node After a Kubelet Configuration Error

A worker node dropped to NotReady and part of the workload went with it. The container runtime is fine and the control plane is healthy; the trail leads from kubectl symptoms down into systemd and the kubelet configuration. Diagnose the node and bring it back.