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[Hardware] Study CKA Material - CKA Reliable Exam Online

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【Hardware】 Study CKA Material - CKA Reliable Exam Online

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Linux Foundation Certified Kubernetes Administrator (CKA) Program Exam Sample Questions (Q46-Q51):NEW QUESTION # 46
Create a pod namedkucc8with asingle app container for each of the
following images running inside(there may be between 1 and 4images specified):
nginx + redis + memcached.
Answer:
Explanation:
See the solution below.
Explanation
solution




NEW QUESTION # 47
Print pod name and start time to "/opt/pod-status" file
Answer:
Explanation:
kubect1 get pods -o=jsonpath='{range .items
  • }{.metadata.name}{"        "}{.status.podIP}{""}{end}'

    NEW QUESTION # 48
    You are running a Deployment named 'web-app' with 3 replicas of a web application container. The container image is hosted in a private registry accessible via a secret named 'my-registry-secret'. You need to implement a rolling update strategy that allows for a maximum of one pod to be unavailable at any given time during the update process. Additionally, you need to configure a 'pre-stop' hook for the container that gracefully shuts down the web application before it is terminated.
    Answer:
    Explanation:
    See the solution below with Step by Step Explanation.
    Explanation:
    Solution (Step by Step) :
    1. Update the Deployment YAML:
    - Update the 'replicas' to 3.
    - Define 'maxUnavailable: 1' and 'maxSurge: 0' in the 'strategy.rollingUpdate' section to control the rolling update process.
    - Configure a 'strategy.type' to 'RollingUpdate' to trigger a rolling update when the deployment is updated.
    - Add a Always' to ensure that the new image is pulled
    even if it exists in the pod's local cache.
    - Add a hook to define a script that gracefully shuts down
    the web application before the pod is terminated.

    2. Create the Deployment: - Apply the updated YAML file using 'kubectl apply -f web-app.yamP 3. Verify the Deployment: - Check the status of the deployment using 'kubectl get deployments web-app' to confirm the rollout and updated replica count. 4. Trigger the Automatic Update: - Push a new image to the 'my-private-registry/web-app:latest' private registry. 5. Monitor the Deployment: - Use "kubectl get pods -l app=web-app' to monitor the pod updates during the rolling update process. You will observe that one pod is terminated at a time, while one new pod with the updated image is created. 6. Check for Successful Update: - Once the deployment is complete, use 'kubectl describe deployment web-app' to see that the 'updatedReplicas' field matches the 'replicas' field, indicating a successful update.

    NEW QUESTION # 49
    Score: 5%

    Task
    From the pod label name=cpu-utilizer, find pods running high CPU workloads and write the name of the pod consuming most CPU to the file /opt/KUTR00401/KUTR00401.txt (which already exists).
    Answer:
    Explanation:
    Solution:
    kubectl top -l name=cpu-user -A
    echo 'pod name' >> /opt/KUT00401/KUT00401.txt

    NEW QUESTION # 50
    You have a Deployment named 'my-app' running a web application with three replicas. The application is exposed using a 'LoadBalancer' service. You want to create a 'ClusterlP' service for internal communication within the Kubernetes cluster and route traffic from the 'LoadBalancer' service to the 'ClusterlP' service.
    Answer:
    Explanation:
    See the solution below with Step by Step Explanation.
    Explanation:
    Solution (Step by Step) :
    1 . Create the ClusterlP service:
    - Define a 'ClusterlP' service that points to the my-app' Deployment.

    2. Create the LoadBalancer service: - Define a 'LoadBalancer service that routes traffic to the my-app-internar service.

    3. Apply the Service YAMLs: - Apply the YAML files for both services using 'kubectl apply -f my-app-internal.yamP and 'kubectl apply -f my- app-external.yamr. 4. Verify the Services: - Check the status of both services using 'kubectl get services'. You should see the 'my-app-internal' service with a 'ClusterlP' and the my-app-external' service with an external IP address. 5. Test the Routing: - Access the application through the external IP address of the 'my-app-external' service. The traffic should be routed to the 'my-app-internal' service and then to the my-app' Deployment. Note: Replace with the actual namespace where your Deployment and Services are located.

    NEW QUESTION # 51
    ......
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