Linux Foundation Linux Foundation Certifications CKA Questions & Answers

• Question 11:

  SIMULATION

  

  Context An existing Pod needs to be integrated into the Kubernetes built-in logging architecture (e.g.kubectl logs). Adding a streaming sidecar container is a good and common way to accomplish this requirement. Task

  Add a sidecar container named sidecar, using the busybox Image, to the existing Pod big- corp-app. The new sidecar container has to run the following command:

  

  Correct Answer: Check the answer in explanation.

  

  

  

• Question 12:

  SIMULATION

  

  Context

  You have been asked to create a new ClusterRole for a deployment pipeline and bind it to a specific ServiceAccount scoped to a specific namespace.

  Task

  Create a new ClusterRole named deployment-clusterrole, which only allows to create the following resource types:

  1.

  Deployment

  2.

  StatefulSet

  3.

  DaemonSet

  Create a new ServiceAccount named cicd-token in the existing namespace app-team1.

  Bind the new ClusterRole deployment-clusterrole lo the new ServiceAccount cicd-token , limited to the namespace app-team1.

  Correct Answer: Check the answer in explanation.

  

  Task should be complete on node k8s -1 master, 2 worker for this connect use command [student@node-1] > ssh k8s kubectl create clusterrole deployment-clusterrole --verb=create -- resource=deployments,statefulsets,daemonsets kubectl create serviceaccount cicd-token --namespace=app-team1 kubectl create rolebinding deployment-clusterrole --clusterrole=deployment-clusterrole -- serviceaccount=default:cicd-token --namespace=app-team1

• Question 13:

  SIMULATION

  

  Task

  Scale the deployment presentation to 6 pods.

  Correct Answer: Check the answer in explanation.

  

• Question 14:

  SIMULATION

  

  Task Create a new PersistentVolumeClaim

  1.

  Name: pv-volume

  2.

  Class: csi-hostpath-sc

  3.

  Capacity: 10Mi

  Create a new Pod which mounts the PersistentVolumeClaim as a volume:

  1.

  Name: web-server

  2.

  Image: nginx

  3.

  Mount path: /usr/share/nginx/html

  Configure the new Pod to have ReadWriteOnce access on the volume.

  Finally, using kubectl edit or kubectl patch expand the PersistentVolumeClaim to a capacity of 70Mi and record that change.

  Correct Answer: Check the answer in explanation.

  

  

  

• Question 15:

  Get IP address of the pod - "nginx-dev"

  Correct Answer: Check the answer in explanation.

  Kubect1 get po -o wide Using JsonPath kubect1 get pods -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.podIP}{"\n"}{end}'

• Question 16:

  Print pod name and start time to "/opt/pod-status" file

  Correct Answer: Check the answer in explanation.

  Solution

  kubect1 get pods -o=jsonpath='{range .items[*]}{.metadata.name}{"\t"}{.status.podIP}{"\n"}{end}'

• Question 17:

  Check the Image version of nginx-dev pod using jsonpath

  Correct Answer: Check the answer in explanation.

  kubect1 get po nginx-dev -o jsonpath='{.spec.containers[].image}{"\n"}'

• Question 18:

  Create a busybox pod and add "sleep 3600" command

  Correct Answer: Check the answer in explanation.

  Solution

  kubectl run busybox --image=busybox --restart=Never -- /bin/sh -c "sleep 3600"

• Question 19:

  Create an nginx pod and list the pod with different levels of verbosity

  Correct Answer: Check the answer in explanation.

  Solution

  // create a pod kubectl run nginx --image=nginx --restart=Never --port=80 // List the pod with different verbosity kubectl get po nginx --v=7 kubectl get po nginx --v=8 kubectl get po nginx --v=9

• Question 20:

  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"