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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  1. How does a Kubernetes operator work?
  2. What are the differences between using the Helm CLI and using a Helm-based operator?
  3. Imagine you are tasked with creating a Helm operator out of an existing Helm chart. What steps would you take to complete this task?
  4. How do the install, upgrade, rollback, and uninstall lifecycle hooks function in a Helm operator?
  5. What is the purpose of the crds/ folder in a Helm chart?
  6. In the Using Helm to manage Operators and CRs section, we introduced two different Helm charts that can be used to help manage Operators and CRs. Implement the Helm charts by using the chart layouts provided within that section. The charts should be used to install the Guestbook operator and to install the Guestbook CR. Refer to Chapter 5, Building Your First Helm Chart for assistance on creating a Helm chart.