The Kubernetes Operator Framework Book: Overcome complex Kubernetes cluster management challenges with automation toolkits

Description

Design and deploy an operator for personal use and public distribution and get to grips with writing, packaging, and distributing a basic operator for a Kubernetes cluster Key FeaturesDevelop a holistic understanding of operators and the Operator FrameworkLearn to design and develop your own operators as per industry standardsFind out how to implement best practices and troubleshoot Kubernetes operatorsBook Description From incomplete collections of knowledge and varying design approaches to technical knowledge barriers, Kubernetes users face various challenges when developing their own operators. Knowing how to write, deploy, and pack operators makes cluster management automation much easier – and that's what this book is here to teach you. Beginning with operators and Operator Framework fundamentals, the book delves into how the different components of Operator Framework (such as the Operator SDK, Operator Lifecycle Manager, and OperatorHub.io) are used to build operators. You'll learn how to write a basic operator, interact with a Kubernetes cluster in code, and distribute that operator to users. As you advance, you'll be able to develop a sample operator in the Go programming language using Operator SDK tools before running it locally with Operator Lifecycle Manager, and also learn how to package an operator bundle for distribution. The book covers best practices as well as sample applications and case studies based on real-world operators to help you implement the concepts you've learned. By the end of this Kubernetes book, you'll be able to build and add application-specific operational logic to a Kubernetes cluster, making it easier to automate complex applications and augment the platform. What you will learnGain insight into the Operator Framework and the benefits of operatorsImplement standard approaches for designing an operatorDevelop an operator in a stepwise manner using the Operator SDKPublish operators using distribution options such as OperatorHub.ioDeploy operators using different Operator Lifecycle Manager optionsDiscover how Kubernetes development standards relate to operatorsApply knowledge learned from the case studies of real-world operatorsWho this book is for This book is for DevOps and cloud engineers, Kubernetes engineers, SREs, developers, and cloud architects interested in automating the management of their Kubernetes clusters. It assumes a basic understanding of core Kubernetes topics or familiarity with Kubernetes and container orchestration. Table of ContentsIntroducing the Operator FrameworkUnderstanding How Operators Interact with KubernetesDesigning an Operator: CRD, API, and Target ReconciliationDeveloping an Operator with the Operator SDKDeveloping an Operator: Advanced FunctionalityBuilding and Deploying Your Kubernetes OperatorPackaging Operators for OperatorHub and Operator Lifecycle ManagerPreparing for Ongoing Maintenance of Your OperatorDiving into FAQs and Future TrendsCase Study for Optional Operator: Prometheus OperatorCase Study for Core Operator: Etcd Operator