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CKAD Exam Torrent: Linux Foundation Certified Kubernetes Application Developer Exam & CKAD Training Materials & CKAD Exam Prep

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Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q169-Q174):

NEW QUESTION # 169
You have a Kubernetes deployment named 'myapp-deployment' that runs a container with a 'requirements.txt' file that lists all the dependencies. How can you use ConfigMaps to manage these dependencies and dynamically update the container with new dependencies without rebuilding tne image?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a ConfigMap named 'myapp-requirements':

2 Apply the ConfigMap: basn kubectl apply -f myapp-requirements_yaml 3. Update the 'myapp-deployment' Deployment to use the ConfigMap:

4. Apply the updated Deployment: bash kubectl apply -f myapp-deployment.yaml 5. Test the automatic update: - Modify the 'myapp-requirements' ContigMap: bash kubectl edit configmap myapp-requirements Add or remove dependencies from the 'requirements.txt' file in the ConfigMap. - Verity the changes in the pod- bash kubectl exec -it bash -c 'pip freeze' Replace with the name of the pod. The output will show the installed dependencies. This solution enables you to manage dependencies dynamically without rebuilding the container image. Whenever you make changes to the 'myapp- requirements' ConfigMap, the deployment will automatically pull the updated dependencies and install them Within the container.

NEW QUESTION # 170
Exhibit:

Context
You are tasked to create a secret and consume the secret in a pod using environment variables as follow:
Task
* Create a secret named another-secret with a key/value pair; key1/value4
* Start an nginx pod named nginx-secret using container image nginx, and add an environment variable exposing the value of the secret key key 1, using COOL_VARIABLE as the name for the environment variable inside the pod

A. Solution:
B. Solution:

Answer: B

NEW QUESTION # 171
You are developing a service that uses a custom configuration file called 'service.properties'. You want to use ConfigMaps to store and manage this file in a secure and efficient manner. The 'service-properties' file contains sensitive information such as database credentials and API keys.
How would you create a ConfigMap that securely stores the 'service-properties' file, ensuring that the file is accessible only to the service's container?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create a Secret for Sensitive Data:
- Create a Secret

- Encode the 'service-properties' file: bash echo "your-database-username=your-database-username" > service-properties echo "your-database-password=your-database-password" >> service-properties echo 'Your-api-key=your-api-key" >> service.properties base64 -w 0 service.properties - Replace with the output from the base64 command. 2. Create the ConfigMap for the File:

3. Apply the Secret and ConfigMap: bash kubectl apply -f service-secrets-yaml kubectl apply -f service-config.yaml 4. Update the Deployment to use the ConfigMap and Secret

5. Apply the updated Deployment: bash kubectl apply -f my-service-deployment-yaml 6. Access the File in the Container. - Mount the ConfigMap and Secret: - The ConfigMap mounts the 'service.properties' file as a placeholder. - The Secret mounts the actual 'service.properties' file securely. - Access the File: - The container should access the 'service.properties' file from '/var/secrets/service/service.properties' This approach uses a Secret to store sensitive data and a ConfigMap to mount the file securely within the container. The container will have access to the 'service-properties' file, but the actual data is stored in the Secret, ensuring its confidentiality'.

NEW QUESTION # 172
You have a Deployment named 'nginx-deployment' running 3 replicas of an Nginx container. You need to ensure that all 3 pods are using the same ConfigMap for configuration. Additionally, you need to configure the ConfigMap so that changes made to it are automatically reflected in the running pods without requiring a new Deployment update.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Create the ConfigMap:

2. Apply the ConfigMap: bash kubectl apply -f nginx-config_yaml 3. Update the Deployment to use the ConfigMap:

4. Apply the updated Deployment bash kubectl apply -f nginx-deployment.yaml 5. Verify the Deployment: bash kubectl get deployments nginx-deployment You should see that the Deployment is using the 'nginx-config' ConfigMap for its configuration. 6. Test the automatic update: - Modify the 'nginx-config' ConfigMap: bash kubectl edit configmap nginx-config Change the 'nginx_conf' value in the ConfigMap. - Verify the change in the pods: bash kubectl exec -it -- bash -c 'cat /etc/nginxfconf-d/nginx_conf' Replace with the name of one of the pods- This command will display the contents of the nginx configuration file within the pod. You will observe that the nginx configuration file in the running pods is automatically updated without needing a Deployment update.

NEW QUESTION # 173
Refer to Exhibit.

Task:
1) Create a secret named app-secret in the default namespace containing the following single key-value pair:
Key3: value1
2) Create a Pod named ngnix secret in the default namespace.Specify a single container using the nginx:stable image.
Add an environment variable named BEST_VARIABLE consuming the value of the secret key3.

Answer:

Explanation:
Solution:

NEW QUESTION # 174
......

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