Interactive browser-based simulator with 23 hands-on CKA scenarios + Break the Cluster mode (20 troubleshooting challenges). Full kubectl, Helm, etcdctl, and kubeadm. No Docker, no cluster, no waiting.
Kubernetes runs most of the world's cloud-native workloads. Practice the full workflow — from first pod to advanced deployments — without touching a real cluster.
20 troubleshooting challenges across all 5 CKA exam domains. CrashLoopBackOff, OOMKilled, RBAC, NetworkPolicy, etcd — fix with real kubectl set image, patch, scale, taint, create. 8 free, 12 premium.
Inline prompt, blinking cursor, Ctrl+C, arrow key history, Tab completion — exactly like kubectl on a real bastion host.
Sidebar shows real-time pod status across namespaces. CrashLoopBackOff, Pending, ImagePullBackOff — all simulated.
Search 300+ commands — kubectl, Helm, Git, and Linux — by name or description. Click any result to paste it directly into the terminal.
Apply deployment.yaml, service.yaml, pod.yaml, and configmap.yaml from the virtual filesystem — just like production.
Full Helm workflow — install, upgrade, rollback, lint, package, dependencies. Plus Git with real branches, commits, and diffs that track your files.
1 control plane + 3 workers, 4 namespaces, pre-existing pods in various states. Drain nodes, cordon workers, debug crashes.
A selection of the most common commands — the trainer supports 300+ kubectl commands, Helm, and Linux system tools.