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

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.

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" cluster and "default" namespace by default
  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.