CKA Task 5

Task Objective

Create a deployment named:

lab155deploy

• Run the nginx image.
• Create 3 replicas.
• Make the application accessible externally.
• Expose it on NodePort 32567.

Step 1 - Create the Deployment

kubectl create deployment lab155deploy --image=nginx

kubectl scale deployment lab155deploy --replicas=3

kubectl get deploy

Step 2 - Generate the Service YAML

kubectl expose deployment lab155deploy \
--port=80 \
--target-port=80 \
--type=NodePort \
--dry-run=client -o yaml > svc.yaml

Edit the YAML and add the NodePort value.

Final Service YAML

apiVersion: v1
kind: Service
metadata:
  name: lab155deploy

spec:
  type: NodePort

  selector:
    app: lab155deploy

  ports:
  - port: 80
    targetPort: 80
    nodePort: 32567

kubectl apply -f svc.yaml

Verification Commands

kubectl get deploy

kubectl get svc

kubectl describe svc lab155deploy

kubectl get endpoints lab155deploy

Your Successful Verification Results

Deployment: 3/3 Running

Service Type: NodePort

NodePort: 32567

Endpoints:
192.168.235.191:80
192.168.235.142:80
192.168.189.78:80

Important Troubleshooting Note

You discovered a common exam confusion:

curl http://10.108.40.57:32567

This does NOT test the NodePort correctly because:

• 10.108.40.57 is the ClusterIP.
• ClusterIP listens on port 80.
• NodePort listens on the Node IP addresses.

Correct NodePort tests:

curl http://172.31.4.33:32567

curl http://172.31.8.139:32567

curl http://172.31.12.53:32567

Exam Memory Shortcut

External Access
      ↓
NodePort Service
      ↓
type: NodePort
      ↓
nodePort: 32567

Three things the grader will likely check:

• Deployment name = lab155deploy
• Replicas = 3
• NodePort = 32567

Screenshot Area