Linux Foundation CKA Quiz:21 Topic:11 Questions:101-105

Free Practice Mock Questions Set 101-105 (Quiz # 21) for Linux Foundation CKA Exam, according to official Linux Foundation Certified Kubernetes Administrator exam syllabus topic # 11

Question: 1

Ensure a single instance of pod nginx is running on each node of the Kubernetes cluster where nginx also represents the Image name which has to be used. Do not override any taints currently in place.

Use DaemonSet to complete this task and use ds-kusc00201 as DaemonSet name.

AExplanation:
solution

Show Answer

Question: 2

Check logs of each container that ''busyboxpod-{1,2,3}''

Akubectl logs busybox -c busybox-container-1
kubectl logs busybox -c busybox-container-2
kubectl logs busybox -c busybox-container-3

Bkubectl logs busybox -c busybox-container-1
kubectl logs busybox -c busybox-container-3
kubectl logs busybox -c busybox-container-3

Show Answer

Question: 3

SIMULATION

The following TLS certificates/key are supplied for connecting to the server with etcdctl:

* CA certificate: /opt/KUCM00302/ca.crt

* Client certificate: /opt/KUCM00302/etcd-client.crt

* Client key: Topt/KUCM00302/etcd-client.key

Asolution

Bsolution

Show Answer

Question: 4

Create an nginx pod which reads username as the environment variable

A// create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml > nginx.yml
// add env section below and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
env:
- name: USER_NAME
restartPolicy: Never
kubectl create -f nginx.yml
//Verify
kubectl exec -it nginx -- env

B// create a yml file
kubectl run nginx --image=nginx --restart=Never --dry-run -o
yaml > nginx.yml
// add env section below and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
env:
- name: USER_NAME
valueFrom:
secretKeyRef:
name: my-secret
key: username
restartPolicy: Never
kubectl create -f nginx.yml
//Verify
kubectl exec -it nginx -- env

Show Answer

Question: 5

Create an nginx pod with containerPort 80 and it should check the pod running at endpoint / healthz on port 80 and verify and delete the pod.

Akubectl run nginx --image=nginx --restart=Always --port=80 --
dry-run -o yaml > nginx-pod.yaml
// add the livenessProbe section and create
apiVersion: v1
kind: Pod
metadata:
labels:
run: nginx
name: nginx
spec:
containers:
- image: nginx
name: nginx
ports:
- containerPort: 80
livenessProbe:
httpGet:
path: /healthz
port: 80
restartPolicy: Always
kubectl create -f nginx-pod.yaml
// verify
kubectl describe pod nginx | grep -i readiness
kubectl delete po nginx

Bkubectl run nginx --image=nginx --restart=Always --port=80 --
dry-run -o yaml > nginx-pod.yaml
// add the livenessProbe section and create
apiVersion: v1
kind: Pod
metadata:
labels:
containers:
- image: nginx
name: nginx
ports:
- containerPort: 60
livenessProbe:
httpGet:
path: /healthz
port: 60
restartPolicy: Always
kubectl create -f nginx-pod.yaml
// verify
kubectl describe pod nginx | grep -i readiness
kubectl delete po nginx

Show Answer

Quiz 17

Quiz 18

Quiz 19

Quiz 20

Quiz 21