Linux Foundation Linux Foundation Certifications CKA Questions & Answers

• Question 21:

  List all the pods sorted by name

  Correct Answer: Check the answer in explanation.

  Solution

  kubectl get pods --sort-by=.metadata.name

• Question 22:

  List all the pods sorted by created timestamp

  Correct Answer: Check the answer in explanation.

  kubect1 get pods--sort-by=.metadata.creationTimestamp

• Question 23:

  List all the pods showing name and namespace with a json path expression

  Correct Answer: Check the answer in explanation.

  Solution

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

• Question 24:

  List "nginx-dev" and "nginx-prod" pod and delete those pods

  Correct Answer: Check the answer in explanation.

  Solution

  kubect1 get pods -o wide kubectl delete po "nginx-dev" kubectl delete po "nginx-prod"

• Question 25:

  SIMULATION

  

  Task

  Schedule a pod as follows:

  1.

  Name: nginx-kusc00401

  2.

  Image: nginx

  3.

  Node selector: disk=ssd

  Correct Answer: Check the answer in explanation.

  

  

• Question 26:

  SIMULATION

  

  Task Monitor the logs of pod bar and: Extract log lines corresponding to error file-not-found

  Write them to /opt/KUTR00101/bar

  Correct Answer: Check the answer in explanation.

  

• Question 27:

  Create 2 nginx image pods in which one of them is labelled with env=prod and another one labelled with env=dev and verify the same.

  Correct Answer: Check the answer in explanation.

  Solution

  kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like "creationTimestamp:

  null" "dnsPolicy: ClusterFirst"

  vim nginx-prod-pod.yaml

  apiVersion: v1

  kind: Pod

  metadata:

  labels:

  env: prod

  name: nginx-prod

  spec:

  containers:

  -

  image: nginx name: nginx-prod restartPolicy: Always # kubectl create -f nginx-prod-pod.yaml kubectl run --generator=run-pod/v1 --image=nginx -labels=env=dev nginx-dev --dry-run -o yaml > nginx-dev-pod.yaml apiVersion: v1 kind: Pod metadata: labels: env: dev name: nginx-dev spec: containers:

  -

  image: nginx name: nginx-dev restartPolicy: Always # kubectl create -f nginx-prod-dev.yaml Verify : kubectl get po --show-labels kubectl get po -l env=prod kubectl get po -l env=dev

• Question 28:

  List all the pods sorted by name

  Correct Answer: Check the answer in explanation.

  kubect1 get pods --sort-by=.metadata.name

• Question 29:

  Create a pod that having 3 containers in it? (Multi-Container)

  Correct Answer: Check the answer in explanation.

  image=nginx, image=redis, image=consul Name nginx container as "nginx-container" Name redis container as "redis-container" Name consul container as "consul-container" Create a pod manifest file for a container and append container section for rest of the images kubectl run multi-container --generator=run-pod/v1 --image=nginx -- dry-run -o yaml > multi-container.yaml # then vim multi-container.yaml apiVersion: v1 kind: Pod metadata: labels: run: multi-container name: multi-container spec: containers:

  -

  image: nginx name: nginx-container

  -

  image: redis name: redis-container

  -

  image: consul name: consul-container restartPolicy: Always

• Question 30:

  Check the image version in pod without the describe command

  Correct Answer: Check the answer in explanation.

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