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The Kubernetes Workshop

The Kubernetes Workshop

By : Zachary Arnold , Sahil Dua , Wei Huang , Faisal Masood, Mélony Qin, Mohammed Abu Taleb
4.9 (9)
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The Kubernetes Workshop

The Kubernetes Workshop

4.9 (9)
By: Zachary Arnold , Sahil Dua , Wei Huang , Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)
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Preface

Introduction

In previous chapters, we learned about different Kubernetes objects, such as Pods, Deployments, and ConfigMaps. These objects are defined and managed by the Kubernetes API (that is, for these objects, the API server manages their creation and destruction, among other operations). However, you may want to extend the functions provided by Kubernetes to provide a feature that is not shipped with standard Kubernetes, and that cannot be enabled by the built-in objects provided by Kubernetes.

To build these functionalities on top of Kubernetes, we use Custom Resources (CRs). Custom Resource Definitions (CRDs) allow us to add a capability through which users can add custom objects to the Kubernetes server and use those CRs like any other native Kubernetes object. A CRD helps us to introduce our custom objects to the Kubernetes system. Once our CRD is created, it can be used like any other object in the Kubernetes server. Not only that, but we can also use the Kubernetes API...

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