Premium Kubernetes Emulator: 50 explained kubectl commands
Run the emulator, copy a command from the table, and watch the text output plus the node canvas to understand which resource moves, where it runs, and what changes inside the cluster.
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Premium Kubernetes Emulator
Learn Kubernetes by running simulated commands with terminal output, explanations and node canvas.
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kubectl terminalcontext: ww-training / Profile: learner-admin
$
Execution outputkubectl simulator
Node canvasDetected resources
🔒 This emulator does not connect to a real cluster. It simulates kubectl for safe learning.
How to use it
- Run the commands in order first so resources exist before checking services, endpoints, HPA or ingress.
- The node canvas shows pods, private IPs, services, profile and simulated permissions.
- The lab is safe: it does not connect to a real cluster.
50explained commands
12guided challenges
Responsive kubectl command table
| # | Category | Command | Explanation | Action |
|---|---|---|---|---|
| 1 | Basics | kubectl version --client | Shows the local kubectl client version to validate client compatibility. | |
| 2 | Basics | kubectl cluster-info | Shows control plane and main cluster service information. | |
| 3 | Context | kubectl config current-context | Shows the active context where kubectl will send commands. | |
| 4 | Context | kubectl config get-contexts | Lists configured contexts, user, cluster and associated namespace. | |
| 5 | Security/RBAC | kubectl auth can-i get pods | Checks whether the current profile can list pods according to RBAC. | |
| 6 | API | kubectl api-resources | Lists available resources, aliases, API version and namespace scope. | |
| 7 | API | kubectl api-versions | Shows available API versions for compatible manifests. | |
| 8 | API | kubectl explain pod | Explains the structure and main fields of the Pod resource. | |
| 9 | Nodes | kubectl get nodes | Lists cluster nodes and their Ready/NotReady state. | |
| 10 | Nodes | kubectl describe node ww-node-02 | Shows capacity, conditions, role and private IP of the worker node. | |
| 11 | Nodes | kubectl top nodes | Shows simulated CPU and memory metrics by node. | |
| 12 | Namespaces | kubectl get namespaces | Lists namespaces available in the cluster. | |
| 13 | Namespaces | kubectl create namespace ww-lab | Creates a lab namespace to isolate resources. | |
| 14 | Namespaces | kubectl label namespace ww-lab environment=training | Adds a label to the namespace for classification and filtering. | |
| 15 | Context | kubectl config set-context --current --namespace=ww-lab | Sets ww-lab as the default namespace for the current context. | |
| 16 | Pods | kubectl get pods -A | Lists pods across all namespaces, including kube-system. | |
| 17 | Pods | kubectl get pods | Lists pods in the current namespace. | |
| 18 | Pods | kubectl get pods -o wide | Shows pods with private IP and assigned node. | |
| 19 | Pods | kubectl get pods --show-labels | Lists pods with labels to understand selectors and service relationships. | |
| 20 | Workloads | kubectl create deployment web --image=nginx:1.27 | Creates a Deployment named web using the nginx image. | |
| 21 | Workloads | kubectl get deployments | Lists deployments and available replicas. | |
| 22 | Workloads | kubectl describe deployment web | Shows Deployment details, image, strategy and replicas. | |
| 23 | Workloads | kubectl scale deployment web --replicas=3 | Scales the Deployment to three replicas distributed across nodes. | |
| 24 | Workloads | kubectl get rs | Lists ReplicaSets created by the Deployment. | |
| 25 | Networking/Services | kubectl expose deployment web --port=80 --target-port=80 | Creates a ClusterIP Service to route internal traffic to pods. | |
| 26 | Networking/Services | kubectl get svc | Lists services and internal cluster IPs. | |
| 27 | Networking/Services | kubectl describe svc web | Shows selector, ports and endpoints of the web service. | |
| 28 | Networking/Services | kubectl get endpoints | Lists private endpoints targeted by the Service. | |
| 29 | Troubleshooting | kubectl logs -l app=web | Queries logs from pods matching the app=web label. | |
| 30 | Troubleshooting | kubectl describe pod web-7d8b | Shows events, state and details for the simulated pod. | |
| 31 | Metrics | kubectl top pods | Shows simulated CPU and memory usage by pod. | |
| 32 | Operations | kubectl exec deploy/web -- nginx -v | Runs a command inside the Deployment container. | |
| 33 | Updates | kubectl set image deployment/web nginx=nginx:1.28 | Updates the Deployment image and triggers a rolling update. | |
| 34 | Updates | kubectl rollout status deployment/web | Checks whether the rollout completed successfully. | |
| 35 | Updates | kubectl rollout history deployment/web | Shows the Deployment revision history. | |
| 36 | Updates | kubectl rollout undo deployment/web | Rolls the Deployment back to the previous version. | |
| 37 | Configuration | kubectl create configmap web-config --from-literal=ENV=training | Creates a ConfigMap with non-sensitive configuration. | |
| 38 | Configuration | kubectl get configmap | Lists ConfigMaps in the current namespace. | |
| 39 | Configuration | kubectl describe configmap web-config | Shows keys and values in the simulated ConfigMap. | |
| 40 | Secrets | kubectl create secret generic web-secret --from-literal=API_KEY=demo | Creates a generic Secret to represent sensitive data. | |
| 41 | Secrets | kubectl get secret | Lists Secrets without exposing values. | |
| 42 | Secrets | kubectl describe secret web-secret | Describes the Secret while masking sensitive values. | |
| 43 | Autoscaling | kubectl autoscale deployment web --cpu-percent=70 --min=2 --max=6 | Creates a simulated HPA to scale by CPU. | |
| 44 | Autoscaling | kubectl get hpa | Lists the HPA, CPU target and current replicas. | |
| 45 | Autoscaling | kubectl describe hpa web | Shows metric details, minimum and maximum replicas. | |
| 46 | Ingress | kubectl apply -f ingress-web.yaml | Applies a simulated Ingress manifest to expose HTTP. | |
| 47 | Ingress | kubectl get ingress | Lists Ingress, host, class and entry address. | |
| 48 | Ingress | kubectl describe ingress web-ingress | Describes host/path rules that route to the web Service. | |
| 49 | Troubleshooting | kubectl get events | Lists recent events useful for diagnosing scheduling and startup. | |
| 50 | Cleanup | kubectl delete namespace ww-lab | Deletes the namespace and cleans up lab resources. |
