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Testing a Dynamic Admission Controller for Kubernetes

Kubernetes dynamic admission controllers let us validate or mutate our Kubernetes request objects to either approve, deny, or change the object upon creation. In this hands-on lab, we review a provided admission controller that add labels to a resource and then create the needed configuration to test it. We'll also see if we can update the deployment code to use our own labels.

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Path Info

Level
Clock icon Intermediate
Duration
Clock icon 30m
Last updated
Clock icon Aug 10, 2025

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Table of Contents

  1. Challenge

    Update Deployment

    Update the deployment to use the desired labels when the webhook is run.

  2. Challenge

    Create Test Resources

    Create a test pod and test deployment.

  3. Challenge

    Test

    Deploy the webhook and test.

Pluralsight Skills - Labs - Pluralsight
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Pluralsight Skills

Pluralsight Skills gives leaders confidence they have the skills needed to execute technology strategy. Technology teams can benchmark expertise across roles, speed up release cycles and build reliable, secure products. By leveraging our expert content, skill assessments and one-of-a-kind analytics, keep up with the pace of change, put the right people on the right projects and boost productivity. It's the most effective path to developing tech skills at scale.

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.

Provided environment for hands-on practice

We will provide the credentials and environment necessary for you to practice right within your browser.

Guided walkthrough

Follow along with the author’s guided walkthrough and build something new in your provided environment!

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On average, you retain 75% more of your learning if you get time for practice.
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