Step 1: Start Minikube
minikube start –driver=docker
This starts a single-node Kubernetes cluster running inside Docker.
- The control plane and worker node run inside a Docker container.
- Verify the cluster:
kubectl cluster-info
kubectl get nodes
- See a single node with the role control-plane.
Step 2: Check Kubernetes Components
- Control Plane Components:
kubectl get componentstatuses
Shows the health of:
- etcd (key-value store)
- scheduler
- controller-manager
- Node Info:
kubectl describe node <node-name>
Shows CPU, memory, Pods, and node conditions.
Step 3: Create a Namespace (Optional)
kubectl create namespace demo
kubectl config set-context – -current – -namespace=demo
(Namespaces isolate resources.)
Step 4: Deploy a Simple Web App (Nginx)
kubectl create deployment web-demo – -image=nginx
- This creates a Deployment with a ReplicaSet.
- Deployment manages Pods and ensures desired state.
Check Deployment:
kubectl get deployments
kubectl get pods
kubectl describe deployment web-demo
Step 5: Expose the Deployment as a Service
kubectl expose deployment web-demo –type=NodePort –port=80
- This creates a Service to access the Pods.
- NodePort exposes it on a port of the Minikube node.
Check Service:
kubectl get svc
kubectl describe svc web-demo
Step 6: Access the Application
minikube service web-demo
This opens the Nginx demo page in your default browser.
- You can also check the NodePort and curl it:
curl $(minikube ip):<NodePort>
Step 7: Scale the Application
kubectl scale deployment web-demo –replicas=3
kubectl get pods -o wide
- Shows 3 Pods running on the worker node, managed by the Deployment.
Step 8: View Logs
kubectl logs <pod-name>
- Helps understand Pod behavior and debug issues.
Step 9: Delete the Application
kubectl delete service web-demo
kubectl delete deployment web-demo
kubectl get all
(Cleans up all resources.)
Step 10: Stop Minikube
minikube stop
- Stops the cluster container but keeps data.
- To remove completely:
minikube delete
Kubernetes Architecture Demonstrated
| Component | Demo Command / Action |
| Control Plane | kubectl cluster-info, kubectl get componentstatuses |
| Node (Worker) | kubectl get nodes, kubectl describe node |
| Pod | kubectl get pods, kubectl describe pod |
| ReplicaSet | Managed automatically by Deployment |
| Deployment | kubectl create deployment web-demo |
| Service | kubectl expose deployment web-demo –type=NodePort |
| Namespace | kubectl create namespace demo |