Kubernetes CKA sample exam question 76 with answer

Question
Create a pod named cka-pod with image nginx which have modified index.html by init container. The content of index.html file should be "Hello World".

Answer
Generate pod manifest:

kubectl run cka-pod --image=nginx --dry-run=client -o yaml

Adjust it:

apiVersion: v1
kind: Pod
metadata:
  labels:
    run: cka-pod
  name: cka-pod
spec:
  initContainers:
  - image: busybox
    name: init
    command: ['sh', '-c', 'echo "Hello World" > /data/index.html']
    volumeMounts:
    - name: vol
      mountPath: /data
  containers:
  - image: nginx
    name: cka-pod
    volumeMounts:
    - name: vol
      mountPath: /usr/share/nginx/html
  volumes:
   - name: vol
     emptyDir: {}

Apply and check:

kubectl applu -f po.yaml
kubectl get po
kubectl describe po cka-pod

Test with curl:

kubectl run test --rm --image=curlimages/curl -it --restart=Never -- "-m 5" $(kubectl get po cka-pod --template '{{.status.podIP}}')

output should be:

Hello World