CKA Practice Exam Questions with Answers Certified Kubernetes Administrator (CKA) Program Certification

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

Solution:

kubectl get deploy front-end

kubectl edit deploy front-end -o yaml

#port specification named http

#service.yaml

apiVersion: v1

kind: Service

metadata:

name: front-end-svc

labels:

app: nginx

spec:

ports:

- port: 80

protocol: tcp

name: http

selector:

app: nginx

type: NodePort

# kubectl create -f service.yaml

# kubectl get svc

# port specification named http

kubectl expose deployment front-end --name=front-end-svc --port=80 --tarport=80 --type=NodePort

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

'metadata.namespace']}"

kubectl run busybox --image=busybox -it --rm --restart=Never --

/bin/sh -c 'echo hello world'

kubectl get po # You shouldn't see pod with the name "busybox"

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

"sleep 3600"