Linux Foundation Linux Foundation Certifications CKA Questions & Answers

• Question 31:

  List the nginx pod with custom columns POD_NAME and POD_STATUS

  Correct Answer: Check the answer in explanation.

  Solution

  kubectl get po -o=custom-columns="POD_NAME:.metadata.name, POD_STATUS:.status.containerStatuses[].state"

• Question 32:

  Get list of all the pods showing name and namespace with a jsonpath expression.

  Correct Answer: Check the answer in explanation.

  kubectl get pods -o=jsonpath="{.items[*]['metadata.name' , 'metadata.namespace']}"

• Question 33:

  Create a pod with environment variables as var1=value1.Check the environment variable in pod

  Correct Answer: Check the answer in explanation.

  Solution

  kubectl run nginx --image=nginx --restart=Never --env=var1=value1 # then kubectl exec -it nginx -- env # or kubectl exec -it nginx -- sh -c 'echo $var1' # or kubectl describe po nginx | grep value1

• Question 34:

  Create a pod that echo "hello world" and then exists. Have the pod deleted automatically when it's completed

  Correct Answer: Check the answer in explanation.

  kubectl run busybox --image=busybox -it --rm --restart=Never -- /bin/sh -c 'echo hello world' kubectl get po # You shouldn't see pod with the name "busybox"

• Question 35:

  List pod logs named "frontend" and search for the pattern "started" and write it to a file "/opt/error- logs"

  Correct Answer: Check the answer in explanation.

  Kubectl logs frontend | grep -i "started" > /opt/error-logs

• Question 36:

  Get list of all pods in all namespaces and write it to file "/opt/pods-list.yaml"

  Correct Answer: Check the answer in explanation.

  kubectl get po -all-namespaces > /opt/pods-list.yaml

• Question 37:

  Create a pod with image nginx called nginx and allow traffic on port 80

  Correct Answer: Check the answer in explanation.

  kubectl run nginx --image=nginx --restart=Never --port=80

• Question 38:

  Create a busybox pod that runs the command "env" and save the output to "envpod" file

  Correct Answer: Check the answer in explanation.

  Solution

  kubectl run busybox --image=busybox --restart=Never -rm -it -- env>; envpod.yaml

• Question 39:

  Create a namespace called 'development' and a pod with image nginx called nginx on this namespace.

  Correct Answer: Check the answer in explanation.

  kubectl create namespace development kubectl run nginx --image=nginx --restart=Never -n development

• Question 40:

  Create a nginx pod with label env=test in engineering namespace .

  Correct Answer: Check the answer in explanation.

  kubectl run nginx --image=nginx --restart=Never --labels=env=test --namespace=engineering --dry- run -o yaml > nginx-pod.yaml kubectl run nginx --image=nginx --restart=Never --labels=env=test --namespace=engineering --dry- run -o yaml | kubectl create -n engineering -f YAML File:

  apiVersion: v1 kind: Pod metadata: name: nginx namespace: engineering labels: env: test spec: containers:

  -name: nginx image: nginx imagePullPolicy: IfNotPresent restartPolicy: Never

  kubectl create -f nginx-pod.yaml