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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q66-Q71):

NEW QUESTION # 66
Create a persistent volume with nameapp-data, of capacity2Giandaccess modeReadWriteMany. Thetype of volume ishostPathand itslocation is/srv/app-data.

Answer:

Explanation:
See the solution below.
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 named ReadWriteMany, storage classname
shared,2Giof storage capacity and the host path

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:
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: "

NEW QUESTION # 67
Check the history of the specific revision of that deployment

Answer:

Explanation:
kubectl rollout history deploy webapp --revision=3

NEW QUESTION # 68
Create a file:
/opt/KUCC00302/kucc00302.txt that lists all pods that implement service in namespace development.
The format of the file should be one pod name per line.

Answer:

Explanation:
See the solution below.
Explanation
solution

NEW QUESTION # 69
Print all pod name and all image name and write it to a file
name "/opt/pod-details.txt"

Answer:

Explanation:
kubectl get pods -o=custom-columns='Pod Name:metadata.name','Image:spec.containers[*].image' /opt/pod-details.txt

NEW QUESTION # 70
Evict all existing pods from a node-1 and make the node unschedulable for new pods.

A. kubectl get nodes
kubectl drain node-1 #It will evict pods running on node-1 to
other nodes in the cluster
kubectl cordon node-1 # New pods cannot be scheduled to the
node
// Verify
kubectl get no
When you cordon a node, the status shows "SchedulingDisabled"
B. kubectl get nodes
kubectl drain node-1 #It will evict pods running on node-1 to
other nodes in the cluster
// Verify
kubectl get no
When you cordon a node, the status shows "SchedulingDisabled"

Answer: A

NEW QUESTION # 71
......

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