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The Kubernetes Operator Framework Book

You're reading from   The Kubernetes Operator Framework Book Overcome complex Kubernetes cluster management challenges with automation toolkits

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Product type Paperback
Published in Jul 2022
Publisher Packt
ISBN-13 9781803232850
Length 328 pages
Edition 1st Edition
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Author (1):
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Michael Dame Michael Dame
Author Profile Icon Michael Dame
Michael Dame
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Toc

Table of Contents (16) Chapters Close

Preface 1. Part 1: Essentials of Operators and the Operator Framework
2. Chapter 1: Introducing the Operator Framework FREE CHAPTER 3. Chapter 2: Understanding How Operators Interact with Kubernetes 4. Part 2: Designing and Developing an Operator
5. Chapter 3: Designing an Operator – CRD, API, and Target Reconciliation 6. Chapter 4: Developing an Operator with the Operator SDK 7. Chapter 5: Developing an Operator – Advanced Functionality 8. Chapter 6: Building and Deploying Your Operator 9. Part 3: Deploying and Distributing Operators for Public Use
10. Chapter 7: Installing and Running Operators with the Operator Lifecycle Manager 11. Chapter 8: Preparing for Ongoing Maintenance of Your Operator 12. Chapter 9: Diving into FAQs and Future Trends 13. Chapter 10: Case Study for Optional Operators – the Prometheus Operator 14. Chapter 11: Case Study for Core Operator – Etcd Operator 15. Other Books You May Enjoy

Running your Operator

In Chapter 6, Building and Deploying Your Operator, we demonstrated ways to build and run an Operator manually by either compiling locally or building a Docker image to run in a Kubernetes cluster. But, neither of these methods is directly compatible with the OLM, so in order to provide an Operator that can be installed by the OLM, the Operator must be prepared with a bundle that contains metadata about the Operator in a format that the OLM understands. Then, this bundle can be passed to the OLM, which will handle the rest of the installation and life cycle management of the Operator.

Generating an Operator's bundle

An Operator's bundle consists of various manifests that describe the Operator and provide additional metadata, such as its dependencies and APIs. Once created, these manifests can be compiled into a bundle image, which is a deployable container image that is used by the OLM to install the Operator in a cluster.

The simplest way to...

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