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The CKA Certification is highly sought after by organizations that are looking to adopt Kubernetes as their container orchestration platform. Certified Kubernetes Administrator (CKA) Program Exam certification ensures that the candidate has a deep understanding of Kubernetes and can effectively manage and troubleshoot Kubernetes applications. This makes the candidate a valuable asset to any organization that is looking to deploy Kubernetes in production.
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NEW QUESTION # 50
Score: 4%
Task
Scale the deployment presentation to 6 pods.
Answer:
Explanation:
Solution:
kubectl get deployment
kubectl scale deployment.apps/presentation --replicas=6
NEW QUESTION # 51
You are running a stateful application using a StatefulSet. How do you ensure that the application data is preserved during a rolling update?
Answer:
Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Use Persistent Volumes:
- Use Persistent Volumes (PVs) and Persistent Volume Claims (PVCs) to provide persistent storage for the stateful application data.
- Ensure that the PVCs are mounted to the pods in the StatefulSet.
2. Configure Rolling Updates: - Configure the StatefulSet's updateStrategy' to use a rolling update strategy. - Ensure that the 'updateStrategy.type' is set to 'RollingUpdate'. 3. Validate Data Preservation: - Perform a rolling update by updating the StatefulSet. - Validate that the application data is preserved during the update process. - Check the logs and application state to confirm that the data is intact.
NEW QUESTION # 52
Score: 7%
Task
Reconfigure the existing deployment front-end and add a port specification named http exposing port 80/tcp of the existing container nginx.
Create a new service named front-end-svc exposing the container port http.
Configure the new service to also expose the individual Pods via a NodePort on the nodes on which they are scheduled.
Answer:
Explanation:
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
NEW QUESTION # 53
Delete the above pod and create again from the same yaml file
and verifies there is no "test-file.txt" in the path /data/redis
(Since non-persistent storage "emptyDir" is used).
Answer:
Explanation:
kubectl delete pod test-redis kubectl create -f test-redis.yaml kubectl exec -it test-redis /bin/sh cat /data/redis/file.txt // file doesn't exist
NEW QUESTION # 54
Configure the kubelet systemd- managed service, on the node labelled with name=wk8s-node-1, to launch a pod containing a single container of Image httpd named webtool automatically. Any spec files required should be placed in the /etc/kubernetes/manifests directory on the node.
You can ssh to the appropriate node using:
[student@node-1] $ ssh wk8s-node-1
You can assume elevated privileges on the node with the following command:
[student@wk8s-node-1] $ | sudo -i
Answer:
Explanation:
NEW QUESTION # 55
......
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