100% PASS CKAD - LATEST LINUX FOUNDATION CERTIFIED KUBERNETES APPLICATION DEVELOPER EXAM LATEST TEST PREP

100% Pass CKAD - Latest Linux Foundation Certified Kubernetes Application Developer Exam Latest Test Prep

100% Pass CKAD - Latest Linux Foundation Certified Kubernetes Application Developer Exam Latest Test Prep

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Tags: CKAD Latest Test Prep, CKAD Reliable Practice Questions, Latest CKAD Real Test, New CKAD Test Sample, Practice Test CKAD Fee

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Linux Foundation Certified Kubernetes Application Developer (CKAD) Exam is a certification program designed to test and validate the skills of individuals in the field of Kubernetes application development. It is an online, proctored exam that requires candidates to demonstrate their knowledge and ability to design, build, configure, and expose cloud native applications for Kubernetes.

The CKAD exam is conducted by the Linux Foundation, a non-profit organization that supports the development of open-source technologies. The Linux Foundation has a reputation for offering some of the most respected certifications in the IT industry, and CKAD is no exception. CKAD exam is designed to test the practical skills of developers and requires them to solve real-world problems using Kubernetes. The CKAD certification is widely recognized and respected in the industry, and it is an excellent way for developers to demonstrate their expertise in Kubernetes.

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CKAD Study Materials & CKAD Test Questions & CKAD Practice Test

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The CKAD exam is intended for developers who have some experience working with Kubernetes and want to demonstrate their expertise in developing Kubernetes-based applications. CKAD exam is designed to test the practical skills of an individual in working with Kubernetes and its associated tools, rather than just their theoretical knowledge. Passing the CKAD Exam is a valuable credential for developers who want to demonstrate their proficiency in developing cloud-native applications on Kubernetes, and it can open up new job opportunities and career advancement prospects.

Linux Foundation Certified Kubernetes Application Developer Exam Sample Questions (Q182-Q187):

NEW QUESTION # 182
You are tasked Witn designing a multi-container Pod tnat nosts botn a web server and a database. The web server should be able to connect to the database within the pod- How would you implement this design, including networking considerations?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
1. Define the Pod YAMI-: Create a Pod definition that includes two containers: one tor the web server and one for the database.

2. Configure Networking: The key to allowing the web server to connect to the database is to use the pod's internal network. Since containers Within a pod share the same network namespace, you can configure the webserver to connect to the database using the name "db". 3. Environment Variables: Set an environment variable CDB HOST') within the webserver container to point to the database container by its name. This ensures the web server can correctly connect to the database within the pod. 4. Pod Deployment: Apply the YAML to create the pod using 'kubectl apply -f web-db-pod.yamr. 5. Verification: To check the pod's status: - Run 'kubectl get pods' - Check the logs of the web server container to confirm it can connect to the database. 6. Important Note: In this example, we're using the default pod networking within Kubernetes. For more complex applications, consider using a service to expose the database container This will allow access to the database from outside the pod.,


NEW QUESTION # 183

Context
A container within the poller pod is hard-coded to connect the nginxsvc service on port 90 . As this port changes to 5050 an additional container needs to be added to the poller pod which adapts the container to connect to this new port. This should be realized as an ambassador container within the pod.
Task
* Update the nginxsvc service to serve on port 5050.
* Add an HAproxy container named haproxy bound to port 90 to the poller pod and deploy the enhanced pod.
Use the image haproxy and inject the configuration located at /opt/KDMC00101/haproxy.cfg, with a ConfigMap named haproxy-config, mounted into the container so that haproxy.cfg is available at
/usr/local/etc/haproxy/haproxy.cfg. Ensure that you update the args of the poller container to connect to localhost instead of nginxsvc so that the connection is correctly proxied to the new service endpoint. You must not modify the port of the endpoint in poller's args . The spec file used to create the initial poller pod is available in /opt/KDMC00101/poller.yaml See the solution below.

Answer:

Explanation:
Explanation
Solution:
apiVersion: apps/v1
kind: Deployment
metadata:
name: my-nginx
spec:
selector:
matchLabels:
run: my-nginx
replicas: 2
template:
metadata:
labels:
run: my-nginx
spec:
containers:
- name: my-nginx
image: nginx
ports:
- containerPort: 90
This makes it accessible from any node in your cluster. Check the nodes the Pod is running on:
kubectl apply -f ./run-my-nginx.yaml
kubectl get pods -l run=my-nginx -o wide
NAME READY STATUS RESTARTS AGE IP NODE
my-nginx-3800858182-jr4a2 1/1 Running 0 13s 10.244.3.4 kubernetes-minion-905m my-nginx-3800858182-kna2y 1/1 Running 0 13s 10.244.2.5 kubernetes-minion-ljyd Check your pods' IPs:
kubectl get pods -l run=my-nginx -o yaml | grep podIP
podIP: 10.244.3.4
podIP: 10.244.2.5


NEW QUESTION # 184
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 # 185
You are building a microservice application that consists of multiple Pods. Each Pod needs to access a shared database hosted in a separate Pod. How would you create a ConfigMap to store the database connection details and make it available to all Pods in the application?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Create a ConfigMap:
- Create a ConfigMap named "database-config' to store the database connection details.
- Replace 'your-database-hostname' , 'your-database-port, 'your-database-user, and 'your-database-password' with the actual connection information.

2. Mount the ConfigMap to Pods: - In tne Deployment configurations for each microservice Pod, mount the 'database-config' ConfigMap as a volume. - Use 'envFror-n' to include the ConfigMap's data as environment variables for the application container - This way, the application can access the database connection details directly through environment variables.

3. Verify the Connection: - Once the Pods are deployed, you can check the application logs to ensure that they are successfully connecting to the database using the provided connection details.


NEW QUESTION # 186
You are managing a Kubernetes cluster running a web application. You need to create a CronJob that automatically updates the web application's database every night at 1:00 AM. The database update script iS located in a container image named 'database-update:vl'. The script requires the following environment variables: 'DATABASE_HOST' , 'DATABASE_USER' , and 'DATABASE_PASSWORD'. How would you create the CronJob YAML file to achieve this?

Answer:

Explanation:
See the solution below with Step by Step Explanation.
Explanation:
Solution (Step by Step) :
I). Create the CronJob YAML file:
- Stan by creating a YAML file named 'database-update-cronjob.yaml' with the following structure:

2. Create a Secret for database credentials: - Create a Kubernetes secret named 'database-credentials' to store the sensitive database credentials:] bash kubectl create secret generic database-credentials --trom-literal=DATA8ASE HOST=your_database host --from-literal=DATA8ASE_USER=your_database_user --from-literal=DATA8ASE_PASSWORD=your_database_password 3. Apply the CronJob: - Apply the CronJ0b YAML file using 'kubectl apply -f database-update-cronjob.yamr. 4. Verify the CronJob: - Check the status of the CronJob using "kubectl get cronjobs" and ensure that it is scheduled successfully. - 'schedule': Defines the schedule for the CronJ0b. In this case, it's set to "0 1 ", which means the job will run at 1:00 AM every day. - 'jobTemplate': Specifies the template for the job that will be created by the CronJob. - 'containers': Defines tne container that will run tne database update script. - 'images: Sets the image for the container, which is 'database-update:vl' - 'command': Defines the command to be executed in the container. - Specifies the environment variables required for the database update script. In this case, the variables are retrieved from a Kubernetes secret named 'database-credentials' to ensure secure storage of sensitive information. - 'backoffLimit: Sets the maximum number of retries if the job fails. ,


NEW QUESTION # 187
......

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