Certified Kubernetes Application Developer (CKAD) Practice Exam - Part 6

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:

Create a Pod with Resource Requests

Create a Pod in the dev Namespace called apple. Use the nginx:stable image.

Configure this Pod’s container with resource requests for 256Mi memory and 250m CPU.

Create and Consume a Secret

In the secure Namespace, create a Secret called secret-code.

You can get a a base64-encoded string for the Secret data via:

echo trustno1 | base64

Add the following key-value data to the Secret:

  code: [insert the base64-encoded string here]

In the same Namespace, create a Pod called secret-keeper. Use the busybox:stable image. Configure the container to run the command sh -c echo $SECRET_STUFF; sleep 3600.

Provide the Secret’s code key to the container as an environment variable called SECRET_STUFF. If done correctly, the container’s log should show the Secret data, trustno1.

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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