Precise Linux-Foundation CKA Vce Online

NEW QUESTION 1
Set the node named ek8s-node-1as unavailable and reschedule all the pods running on it.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:

solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\19 B.JPG

NEW QUESTION 2
List all the pods sorted by created timestamp

• A. Mastered
• B. Not Mastered

Answer: A

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

NEW QUESTION 3
List all the pods sorted by name

• A. Mastered
• B. Not Mastered

Answer: A

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

NEW QUESTION 4
Create a pod with environment variables as var1=value1.Check the environment variable in pod

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
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

NEW QUESTION 5
Create a namespace called 'development' and a pod with image nginx called nginx on this namespace.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
kubectl create namespace development
kubectl run nginx --image=nginx --restart=Never -n development

NEW QUESTION 6
Ensure a single instance of podnginxis running on each node of theKubernetes cluster wherenginxalso represents the Image name whichhas to be used. Do not override anytaints currently in place.
UseDaemonSetto complete thistask and useds-kusc00201asDaemonSet name.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
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

NEW QUESTION 7
Create a persistent volume with nameapp-data, of capacity2Giandaccess modeReadWriteMany. Thetype of volume ishostPathand itslocation is/srv/app-data.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
Persistent Volume
A persistent volume is a piece of storage in aKubernetes cluster. PersistentVolumes are a cluster-level resource like nodes, which don??t belong to any namespace. It is provisioned by the administrator and has a particular file size. This way, a developer deploying their app on Kubernetes need not knowthe underlying infrastructure. When the developer needs a certain amount of persistent storage for their application, the system administrator configures the cluster so that they consume the PersistentVolume provisioned in an easy way.
Creating PersistentVolume
kind: PersistentVolumeapiVersion: v1metadata:name:app-dataspec:capacity: # defines the capacity of PV we are creatingstorage:2Gi#the amount of storage we are tying to claimaccessModes: # defines the rights of the volumewe are creating-ReadWriteManyhostPath:path: "/srv/app-data" # path to which we are creating the volume
Challenge
Create a Persistent Volume namedapp-data, with access modeReadWriteMany, storage classname
shared,2Giof storage capacity and the host path/srv/app-data.

* 2. Save the file and create the persistent volume. Image for post

* 3. View the persistent volume.

Our persistent volume status is available meaning it is available and it has not been mounted yet. This status willchange when we mount the persistentVolume to a persistentVolumeClaim.
PersistentVolumeClaim
In a real ecosystem, a system admin will create the PersistentVolume then a developer will create a PersistentVolumeClaim which will be referenced in a pod. A PersistentVolumeClaim is created by specifying the minimum size and the access mode they require from the persistentVolume.
Challenge
Create a Persistent Volume Claim that requests the Persistent Volume we had created above. The claim should request 2Gi. Ensurethat the Persistent Volume Claim has the same storageClassName as the persistentVolume you had previously created.
kind: PersistentVolumeapiVersion: v1metadata:name:app-data spec:
accessModes:-ReadWriteManyresources:
requests:storage:2Gi storageClassName:shared
* 2. Save and create the pvc
njerry191@cloudshell:~(extreme-clone-2654111)$ kubect1 create -f app-data.yaml persistentvolumeclaim/app-data created
* 3. View the pvc Image for post

* 4. Let??s see what has changed in the pv we had initially created.
Image for post

Our status has now changed fromavailabletobound.
* 5. Create a new pod named myapp with image nginx that will be used to Mount the Persistent Volume Claim with the path /var/app/config.
Mounting a Claim
apiVersion: v1kind: Podmetadata:creationTimestamp: nullname: app-dataspec:volumes:- name:congigpvcpersistenVolumeClaim:claimName: app-datacontainers:- image: nginxname: appvolumeMounts:- mountPath: "/srv/app-data"name: configpvc

NEW QUESTION 8
Create a busybox pod that runs the command ??env?? and save the output to ??envpod?? file

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
kubectl run busybox --image=busybox --restart=Never ?C-rm -it -- env > envpod.yaml

NEW QUESTION 9
Configure the kubelet systemd-managed service, on the nodelabelled withname=wk8s-node-1, tolaunch a pod containing a singlecontainer of Imagehttpdnamedwebtoolautomatically. Any spec filesrequired should be placed in the/etc/kubernetes/manifestsdirectoryon the node.
You canssh to theappropriate node using:
[student@node-1] $ sshwk8s-node-1
You can assume elevatedprivileges on the node with thefollowing command:
[student@wk8s-node-1] $ |sudo ?Ci

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\21 C.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\21 D.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\21 E.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\21 F.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\21 G.JPG

NEW QUESTION 10
Create a pod with image nginx called nginx and allow traffic on port 80

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
kubectlrun nginx --image=nginx --restart=Never --port=80

NEW QUESTION 11
Create and configure the servicefront-end-serviceso it's accessiblethroughNodePortand routes to theexisting pod namedfront-end.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\8 B.JPG

NEW QUESTION 12
Create a pod as follows:
Name:non-persistent-redis
container Image:redis
Volume with name:cache-control
Mount path:/data/redis
The pod should launch in thestagingnamespace and the volumemust notbe persistent.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\13 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\13 C.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\13 D.JPG

NEW QUESTION 13
List all persistent volumes sorted bycapacity, saving the fullkubectloutput to
/opt/KUCC00102/volume_list. Usekubectl 's own functionality forsorting the output, and do not manipulate it any further.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\2 C.JPG

NEW QUESTION 14
Create 2 nginx image pods in which one of them is labelled with env=prod and another one labelled with
env=dev and verify the same.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=prod nginx-prod --dry-run -o yaml > nginx-prodpod.yaml Now, edit nginx-prod-pod.yaml file and remove entries like ??creationTimestamp: null?? ??dnsPolicy: ClusterFirst??
vim nginx-prod-pod.yaml apiVersion: v1
kind: Pod metadata: labels: env: prod
name: nginx-prod spec:
containers:
- image: nginx name: nginx-prod
restartPolicy: Always
# kubectl create -f nginx-prod-pod.yaml
kubectl run --generator=run-pod/v1 --image=nginx -- labels=env=dev nginx-dev --dry-run -o yaml > nginx-dev-pod.yaml apiVersion: v1
kind: Pod metadata: labels: env: dev
name: nginx-dev
spec: containers:
- image: nginx name: nginx-dev
restartPolicy: Always
# kubectl create -f nginx-prod-dev.yaml Verify :
kubectl get po --show-labels kubectl get po -l env=prod kubectl get po -l env=dev

NEW QUESTION 15
Get list of all pods in all namespaces and write it to file ??/opt/pods-list.yaml??

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
kubectl get po ?Call-namespaces > /opt/pods-list.yaml

NEW QUESTION 16
Check to see how many worker nodes are ready (not including nodes taintedNoSchedule) and write the number to/opt/KUCC00104/kucc00104.txt.

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\15 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\15 C.JPG

NEW QUESTION 17
Create an nginx pod and list the pod with different levels of verbosity

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
// 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

NEW QUESTION 18
From the pod labelname=cpu-utilizer, find podsrunning high CPU workloads and
write the name of the pod consumingmost CPU to thefile/opt/KUTR00102/KUTR00102.txt(which already exists).

• A. Mastered
• B. Not Mastered

Answer: A

Explanation:
solution
F:\Work\Data Entry Work\Data Entry\20200827\CKA\16 B.JPG

F:\Work\Data Entry Work\Data Entry\20200827\CKA\16 C.JPG

NEW QUESTION 19
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