Book Image

The Kubernetes Bible

By : Nassim Kebbani, Piotr Tylenda, Russ McKendrick
4 (3)
Book Image

The Kubernetes Bible

4 (3)
By: Nassim Kebbani, Piotr Tylenda, Russ McKendrick

Overview of this book

With its broad adoption across various industries, Kubernetes is helping engineers with the orchestration and automation of container deployments on a large scale, making it the leading container orchestration system and the most popular choice for running containerized applications. This Kubernetes book starts with an introduction to Kubernetes and containerization, covering the setup of your local development environment and the roles of the most important Kubernetes components. Along with covering the core concepts necessary to make the most of your infrastructure, this book will also help you get acquainted with the fundamentals of Kubernetes. As you advance, you'll learn how to manage Kubernetes clusters on cloud platforms, such as Amazon Web Services (AWS), Microsoft Azure, and Google Cloud Platform (GCP), and develop and deploy real-world applications in Kubernetes using practical examples. Additionally, you'll get to grips with managing microservices along with best practices. By the end of this book, you'll be equipped with battle-tested knowledge of advanced Kubernetes topics, such as scheduling of Pods and managing incoming traffic to the cluster, and be ready to work with Kubernetes on cloud platforms.
Table of Contents (28 chapters)
1
Section 1: Introducing Kubernetes
5
Section 2: Diving into Kubernetes Core Concepts
12
Section 3: Using Managed Pods with Controllers
17
Section 4: Deploying Kubernetes on the Cloud
21
Section 5: Advanced Kubernetes

Helm chart anatomy

As an example, we will take the WordPress Helm chart by Bitnami (https://github.com/bitnami/charts/tree/master/bitnami/wordpress) that we have just used to perform a test Deployment in the cluster. Helm charts are simply directories with a specific structure (convention) that can live either in your local filesystem or in a Git repository. The directory name is at the same time the name of the chart, in this case, wordpress. The structure of files in the chart directory is as follows:

  • Chart.yaml: YAML file that contains metadata about the chart such as version, keywords, and references to dependent charts that must be installed.
  • LICENSE: Optional, plain-text file with license information.
  • README.md: End user README file that will be visible on Artifact Hub.
  • values.yaml: The default configuration values for the chart that will be used as YAML template parameters. These values can be overridden by the Helm user, either one by one in the CLI or as...