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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Creating a Kubernetes environment

To create a Kubernetes environment in this chapter, we will use Minikube. We learned how to install Minikube in Chapter 2, Preparing a Kubernetes and Helm Environment.

Let's follow these steps to set up Kubernetes:

  1. Start your Kubernetes cluster by running the following command:
    $ minikube start
  2. After a short amount of time, you should see a line in the output that resembles the following:
     Done! kubectl is now configured to use 'minikube'
  3. Once the Minikube cluster is up and running, create a dedicated namespace for this chapter's exercise. Run the following command to create a namespace 
called chapter3:
    $ kubectl create namespace chapter3

Now that the cluster setup is complete, let's begin the process of installing the WordPress chart to your Kubernetes cluster.