Kubernetes Operators

Preface

Kubernetes is a popular container orchestrator. It harnesses many computers together into one large computing resource and establishes a means of addressing that resource through the Kubernetes application programming interface (API). Kubernetes is open source software with origins at Google, developed over the last five years by a large group of collaborators under the auspices of the Cloud Native Computing Foundation (CNCF).

An Operator extends Kubernetes to automate the management of the entire lifecycle of a particular application. Operators serve as a packaging mechanism for distributing applications on Kubernetes, and they monitor, maintain, recover, and upgrade the software they deploy.

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 ...