Kubernetes Operators: Automating the Container Orchestration Platform 1st Edition, Kindle Edition

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ISBN-13: 978-1492048046
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From the Publisher

Who This Book Is For

If you’ve deployed applications on a Kubernetes cluster, you’ll be familiar with some of the challenges and aspirations that forged the Operator pattern. If you’ve maintained foundation services like databases and filesystems in their own ghetto outside your orchestrated clusters, and you yearn to bring them into the neighborhood, this guide to Kubernetes Operators is for you.

What You Will Learn

This book explains what an Operator is and how Operators extend the Kubernetes API. It shows how to deploy and use existing Operators, and how to create and distribute Operators for your applications using the Red Hat Operator Framework. We relate good practices for designing, building, and distributing Operators, and we explain the thinking that animates Operators with Site Reliability Engineering (SRE) principles.

After describing Operators and their concepts in the first chapter, we’ll suggest ways to get access to a Kubernetes cluster where you can do the exercises in the rest of the book. With a cluster running, you’ll deploy an Operator and observe its behavior when its application fails, scales, or gets upgraded to a new version.

Later, we will explore the Operator SDK and show you how to use it to build an Operator to naturalize an example application as a first-class Kubernetes citizen. With that practical foundation in place, we will discuss the SRE ideas from which Operators derive and the goals they share: reducing operations effort and cost, increasing service reliability, and spurring innovation by freeing teams from repetitive maintenance work.

Operator Framework and SDK

The Operator pattern emerged at CoreOS as a way to automate increasingly complex applications on Kubernetes clusters, including managing Kubernetes itself and the etcd key-value store at its heart. Work on Operators continued through an acquisition by Red Hat, leading to the 2018 release of the open source Operator Framework and SDK. The examples in this book use the Red Hat Operator SDK and the distribution mechanisms that join it in the Operator Framework.

Other Operator Tools

A community has grown up around Operators, with more than a hundred Operators for an array of applications from many vendors and projects available in Red Hat’s distribution channels alone. Several other Operator construction tools exist. We won’t discuss them in detail, but after you read this book you’ll be able to compare any of them with the Operator SDK and Framework. Other open source tools available for building Operators include Kopf for Python, Kubebuilder from the Kubernetes project, and the Java Operator SDK.

Editorial Reviews

About the Author

Jason Dobies is a developer advocate at Red Hat. Jason has worked in the software industry for close to 20 years, developing in a variety of languages, including Python, Java, and Go. In addition to his career as an engineer, he is also an adjunct professor at Villanova University, where he currently teaches software engineering and senior projects. When not sitting at a computer, Jason enjoys spending time with his wife and two children, playing video games, and working out.



Josh Wood is a developer advocate at Red Hat who has worked throughout his career to build utility computing with open source software. He likes fast cars, slow boats, and writing short autobiographies.

--This text refers to the paperback edition.

Product details

  • File Size : 1862 KB
  • Publication Date : February 21, 2020
  • Print Length : 227 pages
  • Word Wise : Not Enabled
  • Publisher : O'Reilly Media; 1st Edition (February 21, 2020)
  • ASIN : B0851SQW4V
  • Text-to-Speech : Not enabled
  • Language: : English
  • Simultaneous Device Usage : Unlimited
  • Enhanced Typesetting : Enabled
  • X-Ray : Not Enabled
  • Lending : Not Enabled
  • Customer Reviews:
    4.4 out of 5 stars 6 ratings