Lab
A Cloud Guru

Preparing Kubernetes for Dynamic Admission Controllers

Admission controllers vet Kubernetes objects before running and can be a powerful part of a Kubernetes cluster. However, not all Kubernetes installs are set up to use admission controllers out of the box. In this lab, we'll check to see if the provided Kubernetes setup can use the provided admission controller and then set up our Kubernetes server to use the desired controller.

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Path Info

Level

Intermediate

Duration

15m

Published

Mar 30, 2023

Challenge

Attempt to Run Fail State

Run the provided bad-pod.yml file to see if the admission controller stops its creation.

Remove the Pod if it fails.
Challenge

Check Setup

Check to see if the admission registration's API is enabled. Also, check for enabled admission controllers.
Challenge

Enable Controller

Enable the ImagePolicyWebhook controller on the kube-apiserver.
Challenge

Test Setup

Check that the admission controller runs as intended.

NOTE: kube-apiserver may take several moments to restart.

Author

A Cloud Guru

The Cloud Content team comprises subject matter experts hyper focused on services offered by the leading cloud vendors (AWS, GCP, and Azure), as well as cloud-related technologies such as Linux and DevOps. The team is thrilled to share their knowledge to help you build modern tech solutions from the ground up, secure and optimize your environments, and so much more!

What's a lab?

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.