CKA Certified Kubernetes Administrator (CKA) Program Questions and Answers

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

'metadata.namespace']}"

kubectl run nginx --image=nginx --restart=Never --port=80

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\18 C.JPG

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

"sleep 3600"

kubectl run nginx --image=nginx --restart=Never --labels=env=test --namespace=engineering --dry-run -o yaml > nginx-pod.yaml

kubectl run nginx --image=nginx --restart=Never --labels=env=test --namespace=engineering --dry-run -o yaml | kubectl create -n engineering -f –

YAML File:

apiVersion: v1

kind: Pod

metadata:

name: nginx

namespace: engineering

labels:

env: test

spec:

containers:

- name: nginx

image: nginx

imagePullPolicy: IfNotPresent

restartPolicy: Never

kubectl create -f nginx-pod.yaml

kubectl get po -o=custom-columns="POD_NAME:.metadata.name,

POD_STATUS:.status.containerStatuses[].state"

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

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 C.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 D.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\3 E.JPG

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 nginx --image=nginx --restart=Never --env=var1=value1

# then

kubectl exec -it nginx -- env

# or

kubectl exec -it nginx -- sh -c 'echo $var1'

# or

kubectl describe po nginx | grep value1

solution

F:\Work\Data Entry Work\Data Entry\20200827\CKA\7 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\7 C.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\7 D.JPG

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

, 'metadata.namespace']}"

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

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

Solution:

kubectl logs bar | grep 'unable-to-access-website' > /opt/KUTR00101/bar

cat /opt/KUTR00101/bar

kubectl create namespace development

kubectl run nginx --image=nginx --restart=Never -n development

Solution:

#network.yaml

apiVersion: networking.k8s.io/v1

kind: NetworkPolicy

metadata:

name: allow-port-from-namespace

namespace: internal

spec:

podSelector:

matchLabels: {

}

policyTypes:

- Ingress

ingress:

- from:

- podSelector: {

}

ports:

- protocol: TCP

port: 8080

#spec.podSelector namespace pod

kubectl create -f network.yaml