Book Image

Learn Helm

By : Andrew Block, Austin Dewey
Book Image

Learn Helm

By: Andrew Block, Austin Dewey

Overview of this book

Containerization is currently known to be one of the best ways to implement DevOps. While Docker introduced containers and changed the DevOps era, Google developed an extensive container orchestration system, Kubernetes, which is now considered the frontrunner in container orchestration. With the help of this book, you’ll explore the efficiency of managing applications running on Kubernetes using Helm. Starting with a short introduction to Helm and how it can benefit the entire container environment, you’ll then delve into the architectural aspects, in addition to learning about Helm charts and its use cases. You’ll understand how to write Helm charts in order to automate application deployment on Kubernetes. Focused on providing enterprise-ready patterns relating to Helm and automation, the book covers best practices for application development, delivery, and lifecycle management with Helm. By the end of this Kubernetes book, you will have learned how to leverage Helm to develop an enterprise pattern for application delivery.
Table of Contents (15 chapters)
Section 1: Introduction and Setup
Section 2: Helm Chart Development
Section 3: Adanced Deployment Patterns
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Chapter 6: Testing Helm Charts

Testing is a common task that engineers must perform during software development. Testing is performed to validate the functionality of a product as well as to prevent regressions as a product evolves over time. Well-tested software is easier to maintain over time and allows developers to more confidently provide new releases to end users.

A Helm chart should be properly tested in order to ensure that it delivers its features to the level of quality expected. In this chapter, we will discuss the ways that robust Helm chart testing can be achieved, including the following topics:

  • Setting up your environment
  • Verifying Helm templating
  • Testing in a live cluster
  • Improving chart tests with the chart testing project
  • Cleaning up