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Linux Foundation CKAD Exam Registration | CKAD Actual Test

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Linux Foundation Certified Kubernetes Application Developer (CKAD) is a certification exam designed for developers who wish to demonstrate their Kubernetes application development skills. CKAD Exam is based on the Kubernetes curriculum that is designed by the Cloud Native Computing Foundation (CNCF) and covers a wide range of topics, including Kubernetes architecture, deployment, maintenance, troubleshooting, and debugging.

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What is a pod?

It's the smallest Kubernetes entity, and it can't be divided. Described as a set of processes that share storage and network interfaces, and also share local volumes. Pseudo-device for communication between containers. Described as the smallest unit of work in Kubernetes. You can upgrade an entire pod, or an individual container. Describes the communication link used by containers to exchange information. Describes how to manage resources, typically storage and networking resources. Desktop applications. Kubernetes is a platform for creating, deploying, and managing containers. Check if your device is supported here. Described as a set of containers that are configured to work together. Scores high on market shares for container orchestration solutions. CNCF CKAD Dumps is a good choice if you want to pass the exam easily. Described as a set of applications that work together. It is the basic unit of coordination in Kubernetes. Manage containers and other resources.

Prepared by experts that have meticulously studied the latest exam questions. Yield to internal components such as Kubelet, Kube API Server, and Kube Scheduler. Hidden by the Pod. A node is responsible for scheduling resources in Kubernetes. It executes pods based on events generated by Kubernetes. The portal shows all the components of Kubernetes in your browser.

Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q67-Q72):

NEW QUESTION # 67
Context

Task:
Create a Pod named nginx resources in the existing pod resources namespace.
Specify a single container using nginx:stable image.
Specify a resource request of 300m cpus and 1G1 of memory for the Pod's container.

Answer:

Explanation:
Solution:

NEW QUESTION # 68
Refer to Exhibit.

Task
A deployment is falling on the cluster due to an incorrect image being specified. Locate the deployment, and fix the problem.

Answer:

Explanation:
create deploy hello-deploy --image=nginx --dry-run=client -o yaml > hello-deploy.yaml Update deployment image to nginx:1.17.4: kubectl set image deploy/hello-deploy nginx=nginx:1.17.4

NEW QUESTION # 69
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 # 70
You have a statefulset named 'wordpress-statefulset' running a WordPress application, and you're experiencing intermittent issues with the database pod, causing intermittent downtime for the application. Describe the steps you would take to diagnose the issue, including any relevant Kubernetes commands or tools.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Check Pod Logs:
- Use ' kubectl logs -c database' to examine the logs of the database pod- Look for any error messages or warnings that might indicate the cause of the intermittent issues.
2. Check Resource Utilization:
- Use 'kubectl top pods -l app=wordpress-statefulset' to check the CPU and memory usage of the database pod. High resource utilization could indicate a resource constraint issue.
3. Inspect Pod Events:
- Use ' kubectl describe pod to view the events related to the database pod. Look for events like "Back-Off' or "Failed" which could indicate restart attempts or other issues.
4. Check Persistent Volume Claims:
- Use 'kubectl describe pvc to verify the status of the persistent volume claim used by the database pod. If the claim is in an error state, this could be a source of the issue.
5. Examine Node Status:
- Use ' kubectl describe node to check the status of the node where the database pod is running. If the node is experiencing issues or is under high load, it could affect pod stability
6. Check Network Connectivity:
- Verity network connectivity between the database pod and other pods in the statefulset. use tools like 'ping' or 'nc' to test connectivity.
7. Examine Database Configuration:
- If the database pod is using a database like MySQL or PostgreSQL, Check the database configuration files for any potential issues or settings that might be causing the intermittent problems.
8. Check Deployment Strategy:
- Ensure that the statefulset's deployment strategy is appropriate for the application. Consider using a rolling update strategy with a 'maxunavailable' setting to minimize downtime during updates.
9. Debug with Tools:
- Use tools like 'kubectl exec' or 'kubectl port-forward' to access the database pod and run debugging tools or commands directly inside the container. This allows for more in-depth analysis of the issue.
10. Consult Database Logs:
- If the database itself is experiencing issues, access the database logs from within the pod to get more detailed information on errors or performance problems. ,

NEW QUESTION # 71
You are deploying a new microservice called 'payment-service' that requires access to a confidential data volume mounted at /sensitive- data'. This volume is mounted as a Secret in Kubernetes. The 'payment-service' container should only be allowed to access this volume. You need to configure the PodSecurityPolicy to enforce this access restriction.

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Create a PodSecurityPoIicy:
- Create a YAML file for your P0dSecurityP01icy.
- Define the 'apiVersion' and 'kind'
- Add a 'metadata' section with a unique name for the policy (e.g., 'payment-service-psp').
- In the 'spec' section:
- Set 'runAsUser' to ' RunAsAny' to allow any user ID.
- Set readOnlyRootFilesystem' to 'talse' to allow modifications within the container.
- Set 'hostNetworR to 'false' to avoid using the host's network.
- Set 'allowPrivilegeEscalatiorU to 'false' to prevent privilege escalation.
- In the 'volumes' sectiom
- Define 'hostPath' as the allowed volume type with the specified path "Isensitive-data'

2. Apply the PodSecurityPolicy: - Use ' kubectl apply -f payment-service-psp.yamr to create the PodSecurityPoIicy in your cluster. 3. Create a ServiceAccount: - Create a new ServiceAccount tor the 'payment-service deployment. - Apply the ServiceAccount YAML file using 'kubectl apply -f payment-service-sa_yamr 4. Bind the PodSecurityPolicy to the ServiceAccount: - Create a RoleBinding to bind the 'payment-service-psp' to the 'payment-service' ServiceAccount - Apply the RoleBinding YAML file using "kubectl apply -f payment-service-rb.yaml'

5. Deploy the Payment Service: - Create the 'payment-service' Deployment configuration. - Specify the 'payment-service' ServiceAccount in the field. - Define the 'volumeMount tor the 'sensitive-data' volume and specify the corresponding 'volume' in the 'volumes' section. - Ensure the volume is mounted as a Secret from the 'default' namespace.

- The PodSecurityPolicy restricts the benavior of pods and their containers. - 'runAslJser' , 'readOnlyRootFilesystem', 'hostNetwork' , and sallowPrivilegeEscalation' define various security constraints for the container. - The 'volumes' section specifies allowed volume types (e.g., 'hostPath') and paths. - The ServiceAccount binds the PodSecurityPolicy to the deployment. - The ROIeBinding assigns the PodSecurityPolicy to the ServiceAccount, effectively enforcing the specified constraints. This configuration ensures that only the payment-service' deployment can access the confidential data volume mounted as a Secret in Kubernetes.

NEW QUESTION # 72
......

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