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Learn Helm

You're reading from Learn Helm

Product type Book

Published in Jun 2020

Publisher Packt

ISBN-13 9781839214295

Pages 344 pages

Edition 1st Edition

Languages

Concepts

Containerization

Authors (2):

Andrew Block

Austin Dewey

View More author details

Table of Contents (15) Chapters

Preface

1. Section 1: Introduction and Setup

2. Chapter 1: Understanding Kubernetes and Helm

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 6: Testing Helm Charts

Here are some answers to the questions presented in this chapter:

The helm template command is used to generate your Helm templates locally. The helm lint command is used to lint for errors in your chart’s structure and chart definition file. It also attempts to find errors that will result in a failed installation.
To validate your chart templates prior to installation, you can run the helm template command to generate your YAML resources locally to ensure they were generated properly. You can also use the --verify flag to check with the API server that your YAML schemas are correct without installing the resources. The helm install --dry-run command can also perform this check with the API server prior to installation.
One tool that can be used to lint the style of your YAML resources is the yamllint tool. It can be used alongside helm template to lint your generated resources (for example, helm template my-test test-chart | yamllint...

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Authors (2)

Andrew Block

Andrew Block is a core maintainer on the Helm project and a Distinguished Architect at Red Hat. He specializes in the use of continuous integration and continuous delivery methodologies to streamline the delivery process and incorporate security at each stage. He works with organizations to adopt and implement these technologies and concepts within their organization. As an open source enthusiast, Andrew not only has authored several publications, but he is also a contributor to several open source communities and a lead within the sigstore project, which aims at simplifying how software is signed and verified.

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See other products by Andrew Block

Austin Dewey

Austin Dewey is a DevOps engineer focused on delivering a streamlined developer experience on cloud and container technologies. Austin started his career with Red Hat's consulting organization, where he helped drive success at Fortune 500 companies by automating deployments on Red Hat's Kubernetes-based PaaS, OpenShift Container Platform. Currently, Austin works at fintech start-up Prime Trust, where he builds automation to scale financial infrastructure and supports developers on Kubernetes and AWS.

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