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)
Part 1: Introduction and Setup
Part 2: Helm Chart Development
Part 3: Advanced Deployment Patterns

Deploying the scaffolded Guestbook chart

Before we install the chart, let’s set up your Kubernetes environment by following these steps:

  1. Start Minikube by running the minikube start command:
    $ minikube start
  2. Create a new namespace called chapter4:
    $ kubectl create namespace chapter4

Now, let’s proceed by installing your scaffolded chart and reviewing the deployed resources. In Chapter 3, Installing Your First App With Helm, we installed a Helm chart from a remote repository by providing the name bitnami/wordpress, which references the name of the remote repository and the chart contained within this repository. Alternatively, you can also install a chart by providing the local path to a valid Helm chart project folder. This makes it easy to test your Helm charts and see your progress without needing to publish the chart to a repository first.

  1. Let’s install your chart by running the following command, where ./guestbook represents the folder...