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Learn Helm

You're reading from   Learn Helm Improve productivity, reduce complexity, and speed up cloud-native adoption with Helm for Kubernetes

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Product type Paperback
Published in Jun 2020
Publisher Packt
ISBN-13 9781839214295
Length 344 pages
Edition 1st Edition
Tools
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Authors (2):
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Andrew Block Andrew Block
Author Profile Icon Andrew Block
Andrew Block
Austin Dewey Austin Dewey
Author Profile Icon Austin Dewey
Austin Dewey
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Toc

Table of Contents (15) Chapters Close

Preface 1. Section 1: Introduction and Setup
2. Chapter 1: Understanding Kubernetes and Helm FREE CHAPTER 3. Chapter 2: Preparing a Kubernetes and Helm Environment 4. Chapter 3: Installing your First Helm Chart 5. Section 2: Helm Chart Development
6. Chapter 4: Understanding Helm Charts 7. Chapter 5: Building Your First Helm Chart 8. Chapter 6: Testing Helm Charts 9. Section 3: Adanced Deployment Patterns
10. Chapter 7: Automating Helm Processes Using CI/CD and GitOps 11. Chapter 8: Using Helm with the Operator Framework 12. Chapter 9: Helm Security Considerations 13. ASSESSMENTS 14. Other Books You May Enjoy

Chapter 8: Using Helm with the Operator Framework

One of the advantages of using Helm is the ability to synchronize the local and the live states. With Helm, the local state is managed with values files that, when provided using the install or upgrade command, apply the values to synchronize the live state in a Kubernetes cluster. In previous chapters, this was performed by invoking these commands when a change to the application was desired.

Another way these changes can be synchronized is to create an application inside the cluster that checks periodically that the desired state matches the current configurations within an environment. If the state does not match, the application can automatically modify the environment to match the desired state. This application is referred to as a Kubernetes operator. In this chapter, we will create a Helm-based operator that helps ensure the locally defined state always matches the live state of the cluster. If it does not, the operator will...

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