Linux Foundation CKA Practice Questions| TestInsights

Question 1

List all the pods sorted by name

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

Correct : A

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

Question 2

List all the pods sorted by created timestamp

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

Correct : A

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

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']}'

Correct : A

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

Question 4

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''

Correct : A

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

Question 5

Score:7%

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:

/bin/sh -c tail -n+1 -f /va r/log/big-corp-app.log

Use a Volume, mounted at /var/log, to make the log file big-corp-app.log available to the sidecar container.

AExplanation:
Solution:
#
kubectl get pod big-corp-app -o yaml
#
apiVersion: v1
kind: Pod
metadata:
name: big-corp-app
spec:
containers:
- name: big-corp-app
image: busybox
args:
- /bin/sh
- -c
- >
i=0;
while true;
do
echo '$(date) INFO $i' >> /var/log/big-corp-app.log;
i=$((i+1));
sleep 1;
done
volumeMounts:
- name: logs
mountPath: /var/log
- name: count-log-1
image: busybox
args: [/bin/sh, -c, 'tail -n+1 -f /var/log/big-corp-app.log']
volumeMounts:
- name: logs
mountPath: /var/log
volumes:
- name: logs
emptyDir: {
}
#
kubectl logs big-corp-app -c count-log-1

Correct : A

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