Linux Foundation Certified Kubernetes Administrator Exam Practice Test

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Total 67 questions

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Question 1

Score: 13%

Task

A Kubernetes worker node, named wk8s-node-0 is in state NotReady. Investigate why this is the case, and perform any appropriate steps to bring the node to a Ready state, ensuring that any changes are made permanent.

AExplanation:
Solution:
sudo -i
systemctl status kubelet
systemctl start kubelet
systemctl enable kubelet

Answer : A

Question 2

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

AExplanation:
kubect1 get pods -o wide
kubectl delete po ''nginx-dev''
kubectl delete po ''nginx-prod''

Answer : A

Question 3

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

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

Answer : A

Question 4

List all the pods sorted by created timestamp

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

Answer : A

Question 5

List all the pods sorted by name

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

Answer : A

Question 6

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

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

Answer : A

Question 7

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.

AExplanation:
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

Answer : A