Certified Kubernetes Application Developer (CKAD) Practice Exam - Part 7

30 minutes
  • 2 Learning Objectives

About this Hands-on Lab

This lab provides practice scenarios to help prepare you for the Certified Kubernetes Application Developer (CKAD) exam. You will be presented with tasks to complete, as well as server(s) and/or an existing Kubernetes cluster to complete them in. You will need to use your knowledge of Kubernetes to successfully complete the provided tasks, much like you would on the real CKAD exam. Good luck!

Learning Objectives

Successfully complete this lab by achieving the following learning objectives:

Run a Job on a Schedule

In the one Namespace, run a Job that executes repeatedly on a schedule. Use a CronJob called pwd-runner to do this.

The Job should run the pwd command once every minute. Use the busybox:stable image. If the command takes longer than 10 seconds to execute, it should be automatically terminated.

Verify that the Job runs successfully at least once.

Create a Deployment

Create a Deployment called nginx-dep in the two Namespace.

Use the nginx:stable image, and run with 3 replicas. Expose port 8081, and add an environment variable to the containers called NGINX_PORT with the value 8081. This will cause the nginx container to listen on port 8081.

Additional Resources

Use the provided environment to complete the tasks detailed in the learning objectives.

You can access all components of the cluster from the CLI server. The control plane server is k8s-control, and the worker is k8s-worker1. If you need to log in to the control plane server, for example, just use ssh k8s-control from the CLI server.

You can also use kubectl from the CLI server, control plane node, or worker to interact with the cluster. In order to use kubectl from the CLI server, you will need to select the acgk8s cluster to interact with, like so: kubectl config use-context acgk8s.

kubectl is aliased to k, and Kubernetes autocompletion is enabled. You can use the k alias like so: k get pods.

This lab includes a verification script to help you determine whether you have completed the objectives successfully. You can run the verification script with /home/cloud_user/verify.sh.

What are Hands-on Labs

Hands-on Labs are real environments created by industry experts to help you learn. These environments help you gain knowledge and experience, practice without compromising your system, test without risk, destroy without fear, and let you learn from your mistakes. Hands-on Labs: practice your skills before delivering in the real world.

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