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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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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

Improving chart tests with the chart testing project

The tests written in the previous section are sufficient enough to test whether the Guestbook application can be successfully installed. However, there are some key limitations that are inherent to the standard Helm testing process that need to be called out.

The first limitation to consider is the difficulty of testing the different permutations that can occur within a chart's values. Because the helm test command does not provide the ability to modify your release's values beyond those set at the time of an installation or upgrade, the following workflow must be followed when running helm test against different values settings:

  1. Install your chart with an initial set of values.
  2. Run helm test against your release.
  3. Delete your release.
  4. Install your chart with a different set of values.
  5. Repeat steps 2 through 4 until a significant amount of value possibilities are tested.

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