Book Image

Managing Kubernetes Resources Using Helm - Second Edition

By : Andrew Block, Austin Dewey
Book Image

Managing Kubernetes Resources Using Helm - Second Edition

By: Andrew Block, Austin Dewey

Overview of this book

Containerization is one of the best ways to implement DevOps, and learning how to execute it effectively is an essential part of a developer’s skillset. Kubernetes is the current industry standard for container orchestration. This book will help you discover the efficiency of managing applications running on Kubernetes with Helm. Starting with a brief introduction to Helm and its impact on users working with containers and Kubernetes, you’ll delve into the primitives of Helm charts and their architecture and use cases. From there, you’ll understand how to write Helm charts in order to automate application deployment on Kubernetes and work your way toward more advanced strategies. These enterprise-ready patterns are focused on concepts beyond the basics so that you can use Helm optimally, looking at topics related to automation, application development, delivery, lifecycle management, and security. By the end of this book, you’ll have learned how to leverage Helm to build, deploy, and manage applications on Kubernetes.
Table of Contents (18 chapters)
1
Part 1: Introduction and Setup
5
Part 2: Helm Chart Development
12
Part 3: Advanced Deployment Patterns

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. Well-tested software is easier to maintain and allows developers to confidently provide new releases to end users.

A Helm chart should be tested properly to ensure that it delivers its features to the level of quality expected. In this chapter, we will discuss the ways that testing can be applied to Helm charts to verify the expected capabilities.

In this chapter, we will cover the following topics:

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