Linux Foundation Updated CKA Exam Questions and Answers by zane

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

"sleep 3600"

// 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

Solution:

#backup

ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379 " --cacert=/opt/KUIN000601/ca.crt --cert=/opt/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot save /etc/data/etcd-snapshot.db

#restore

ETCDCTL_API=3 etcdctl --endpoints="https://127.0.0.1:2379 " --cacert=/opt/KUIN000601/ca.crt --cert=/opt/KUIN000601/etcd-client.crt --key=/opt/KUIN000601/etcd-client.key snapshot restore /var/lib/backup/etcd-snapshot-previoys.db

Task Summary

You need to:

SSH into cka000046

Create a StorageClass named local-path using the provisioner rancher.io/local-path

Set the volume binding mode to WaitForFirstConsumer

Make this StorageClass the default

Step-by-Step Solution

1️⃣ SSH into the correct host

ssh cka000046

⚠️ Required. Skipping this = zero score

2️⃣ Create a StorageClass YAML file

Create a file named local-path-sc.yaml:

cat < local-path-sc.yaml

apiVersion: storage.k8s.io/v1

kind: StorageClass

metadata:

name: local-path

annotations:

storageclass.kubernetes.io/is-default-class: "true"

provisioner: rancher.io/local-path

volumeBindingMode: WaitForFirstConsumer

EOF

✅ This:

Sets WaitForFirstConsumer (as required)

Marks the class as default using the correct annotation

3️⃣ Apply the StorageClass

kubectl apply -f local-path-sc.yaml

4️⃣ Verify it’s the default StorageClass

kubectl get storageclass

You should see local-path with a (default) marker:

NAME PROVISIONER RECLAIMPOLICY VOLUMEBINDINGMODE ALLOWVOLUMEEXPANSION AGE

local-path rancher.io/local-path Delete WaitForFirstConsumer false 10s

Final Command Summary

ssh cka000046

cat < local-path-sc.yaml

apiVersion: storage.k8s.io/v1

kind: StorageClass

metadata:

name: local-path

annotations:

storageclass.kubernetes.io/is-default-class: "true"

provisioner: rancher.io/local-path

volumeBindingMode: WaitForFirstConsumer

EOF

kubectl apply -f local-path-sc.yaml

kubectl get storageclass