Book Image

The Kubernetes Operator Framework Book

By : Michael Dame
1 (1)
Book Image

The Kubernetes Operator Framework Book

1 (1)
By: Michael Dame

Overview of this book

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.
Table of Contents (16 chapters)
1
Part 1: Essentials of Operators and the Operator Framework
4
Part 2: Designing and Developing an Operator
9
Part 3: Deploying and Distributing Operators for Public Use

Troubleshooting

While this chapter introduced some new concepts, including the OLM and OperatorHub, many of the resources already listed in earlier Troubleshooting sections throughout this book still apply.

OLM support

The OLM and its related resources are related in general to Operator SDK development. So, there is reasonable help for this topic available in the #operator-sdk-dev Slack channel on slack.k8s.io. The OLM is also available on GitHub for reporting issues at https://github.com/operator-framework/operator-lifecycle-manager. The documentation for integrating an Operator with the OLM is available as a primary resource at https://sdk.operatorframework.io/docs/olm-integration/.

OperatorHub support

OperatorHub is also available on GitHub at the catalog repository shown in this chapter (https://github.com/k8s-operatorhub/community-operators). For issues with the frontend https://operatorhub.io/ website specifically, that code is located at https://github.com/k8s-operatorhub...