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Kubernetes – An Enterprise Guide

Kubernetes – An Enterprise Guide

By : Marc Boorshtein, Scott Surovich
4.8 (13)
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Kubernetes – An Enterprise Guide

Kubernetes – An Enterprise Guide

4.8 (13)
By: Marc Boorshtein, Scott Surovich

Overview of this book

Stay at the forefront of cloud-native technologies with the eagerly awaited Kubernetes – An Enterprise Guide, Third Edition. Delve deep into Kubernetes and emerge with the latest insights to conquer today's dynamic enterprise challenges. This meticulously crafted edition equips you with the latest insights to skillfully navigate the twists and turns of ever-evolving cloud technology. Experience a more profound exploration of advanced Kubernetes deployments, revolutionary techniques, and expert strategies that redefine your cloud-native skill set. Discover cutting-edge topics reshaping the technological frontier like virtual clusters, container security, and secrets management. Gain an edge by mastering these critical aspects of Kubernetes and propelling your enterprise to new heights. Expertly harness Kubernetes' power for business-critical applications with insider techniques. Smoothly transition to microservices with Istio, excel at modern deployments with GitOps/CI/CD, and bolster security with OPA/Gatekeeper and KubeArmor. Integrate Kubernetes with leading tools for maximum impact in a competitive landscape. Stay ahead of the technology curve with cutting-edge strategies for innovation and growth. Redefine cloud-native excellence with this definitive guide to leveraging Kubernetes.
Table of Contents (22 chapters)
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20
Other Books You May Enjoy
21
Index

Introduction to dynamic admission controllers

An admission controller is a specialized webhook in Kubernetes that runs when an object is created, updated, or deleted. When one of these three events happens, the API server sends information about the object and operation to the webhook. Admission controllers can be used to either determine if an operation should happen or give the cluster operator a chance to change the object definition before it’s processed by the API server. We’re going to look at using this mechanism to both enforce security and extend the functionality of Kubernetes.

There are two ways to extend Kubernetes:

  • Build a custom resource definition so that you can define your own objects and APIs.
  • Implement a webhook that listens for requests from the API server and responds with the necessary information. You may recall that in Chapter 6, Integrating Authentication into Your Cluster, we explained that a custom webhook could be used...

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