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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Setting up our environment

In this chapter, we will develop two different pipelines to demonstrate how different processes around Helm can be automated.

Take the following steps to begin setting up your local environment:

  1. First, given the increased memory requirements of this chapter, you should delete your minikube cluster and recreate it with 4g of memory if it was not inititalized with 4g of memory in Chapter 2, Preparing a Kubernetes and Helm Environment. This can be done by running the following commands:
    $ minikube delete
    $ minikube start --memory=4g
  2. Once Minikube starts, create a new namespace called chapter7:
    $ kubectl create namespace chapter7

You should, additionally, fork the Packt repository, which will allow you to make modifications against the repository based on the steps described in these exercises:

  1. Create a fork of the Packt repository by clicking the Fork button on the Git repo:

    Figure 7.1 – Select the Fork button to fork the...