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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

Using Helm to manage Operators and CRs

In the previous section, you installed the Guestbook Operator by first creating the CRD that is found underneath the guestbook-operator/deploy/crds/ folder. Next, you created the operator resources contained underneath the guestbook-operator/deploy/ folder. Finally, you created the CR to deploy the Guestbook application. Each of these tasks was performed by using the Kubectl CLI, but this instead can also be accomplished using Helm charts to provide a more flexible and repeatable solution toward installing and managing an operator.

Helm allows you to provide a special directory called crds/ inside your Helm chart, which is used to create CRDs whenever the chart is installed. Helm creates CRDs before any of the other resources defined under the templates/ folder, making it simpler to install applications such as Operators that depend on the presence of CRDs.

The following file structure depicts a Helm chart that could be used to install the...

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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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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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