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Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q36-Q41):

NEW QUESTION # 36
You have a Helm cnan named 'my-app' that deploys a web application. The chan uses a 'service' and 'deployment' to expose the application. However, the chart currently deploys the application using a static 'image: my-app:v1.0.0' in the 'deployment section. How can you modify the Helm chan to dynamically pull the latest image tag from a Git tag tor the 'my-app' repository?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Configure Git Tag as Image Tag:
- In your 'my-app/values.yamr, add a new variable to hold the desired Git tag:

2. Modify the Deployment Template:

3. Fetch Git Tag using 'helm template's - Before deploying the chart, use 'helm template to generate the template with the Git tag injected. Assuming your Git repository is named 'my-repo' and the tag iS 'vl.1.0', run: bash helm template my-app -set image-tag=$(git Is-remote --tags my-repo I grep vl .1.0 | awk '{print $2}' | cut -f3) 4. Deploy the Chart: - Now you can deploy the Helm chart using the generated template or by setting the 'image-tag' value directly in the 'helm install' command. For example: bash helm install my-app my-appl --set image.tag=S(git Is-remote -tags my-repo I grep v1.1.0 | awk '{print $2)' | cut -d'/' -f3) - When deploying, the chart will automatically use the specified Git tag as the image tag for the deployment.

NEW QUESTION # 37
Context

Task:
Modify the existing Deployment named broker-deployment running in namespace quetzal so that its containers.
1) Run with user ID 30000 and
2) Privilege escalation is forbidden
The broker-deployment is manifest file can be found at:

Answer:

Explanation:
Solution:

NEW QUESTION # 38
You are building a container image for a Spring Boot application that connects to a MySQL database. The application requires specific environment variables, such as the database nostname, username, password, and port. How would you define these environment variables Within the Docker-file to ensure the application runs correctly in a Kubernetes cluster?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
1. Define Environment Variables in Docker-file:
- Utilize the 'ENV' instruction within your Dockerfile to set the necessary environment variables.
- These variables will be accessible to your Spring Boot application during runtime.
- Example:
dockerfile

2. Build the Docker Image: - Construct your Docker image using the Docker-file. - Run the following command: 'docker build -t your-image-name 3. Deploy to Kubernetes: - Create a Deployment or Pod in Kubernetes that utilizes your built image. - Ensure the pod's environment variables align with the ones defined in your Dockerfile. - Example (Deployment YAML):

4. Verify Application Functionality: - Access your deployed application in the Kubernetes cluster. - Verify that it connects successfully to the database and operates as expected.

NEW QUESTION # 39
You have a Deployment named 'bookstore-deployment which deploys a Bookstore application, utilizing a PostgreSQL database. The deployment has 3 replicas. The database server is managed externally. The application is built With a feature to dynamically resize its replica count based on the load- You need to implement a strategy to automatically adjust the replica count to between 2 and 5, based on the CPU utilization of the pods. This should happen without manual intervention.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Horizontal Pod Autoscaler (HPA):
- use the 'kubectl create hpa' command to create an HPA named 'bookstore-hpa'
- Set the 'minRepIicas' to 2 and 'maxRepIic.as' to 5, defining the desired range of replicas.
- Set the 'targetCPlJLJtilizationPercentage' to 70, meaning the replica count will adjust when the average CPU utilization ot the pods crosses 70%.
- Specify the selector to match the 'bookstore-deployment' pods.

2. Apply the HPA: - Run 'kubectl apply -f bookstore-hpa.yamr to create the HPA. 3. Verify the HPA: - Check the status of the HPA using 'kubectl get hpa bookstore-hpa' 4. Observe Replica Adjustment: - Increase the load on the bookstore application to trigger the HPA scaling. - Monitor the replica count of the bookstore-deployment' using 'kL1bectl get deployments bookstore-deployment. You will observe the replica count automatically adjusting based on the CPL] utilization- 5. Customize Scaling Parameters: - You can customize the 'targetCPLJlJtilizationPercentage', 'minReplicas', and 'maxReplicaS in the HPA definition based on the application requirements and desired benavior.

NEW QUESTION # 40
You have a Kustomization file that applies a patch to the 'spec-template-spec-containers-image' field of a Deployment However, you are now using a newer version of Kubernetes and have received warnings about the deprecated 'spec.template.spec' path. How can you update the Kustomization file to use the recommended API path, ensuring the patch still applies correctly?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Identify the Deprecated Path: The original Kustomization file likely has a patch like this:

Where 'patch.yamr contains:

2. IJpdate the Patch Path: Replace the deprecated path with the recommended one: Vspec/template/spec.containers/0/image' -> /spec/template.container/0/images

3. Apply the IJpdated Kustomizatiom Re-apply the Kustomization file With the updated patch. 4. Verify the Patch: Verify that the updated Deployment now uses the new image by checking the 'spec-template.spec.contajners.image' field. This example demonstrates updating a Kustomization file to use the correct API path for a patch. It is important to regularly review Kustomization files and apply any necessary updates to avoid issues with API deprecations and ensure compatibility with the latest Kubernetes versions.,

NEW QUESTION # 41
......

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Reliable Linux Foundation CKAD Exam Pdf - CKAD Current Exam Content

CKAD Current Exam Content | Hot CKAD Spot Questions

Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q36-Q41):

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