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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

Product type Paperback

Published in Jun 2020

Publisher Packt

ISBN-13 9781839214295

Length 344 pages

Edition 1st Edition

Tools

Helm

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 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

Upgrading the WordPress release

Upgrading a release refers to the process of modifying the values that a release was installed with or upgrading to a newer version of the chart. In this section, we will upgrade the WordPress release by configuring additional values around the WordPress replica and resource requirements.

Modifying the Helm values

It is common for Helm charts to expose values to configure the number of instances of an application and their related set of resources. The following screenshots illustrate several portions of the helm show values command that relate to the values used for this purpose.

The first value, replicaCount, is straightforward to set. Since replica is a Kubernetes term that describes the number of Pods needed to deploy an application, it's implied that replicaCount is used to specify the number of application instances that are deployed as part of a release:

Figure 3.23 – replicaCount in the helm show values command

...

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Authors (2)

Andrew Block

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.

See other products by Andrew Block

Austin Dewey

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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