Book Image

Mastering Kubernetes - Fourth Edition

By : Gigi Sayfan
3.3 (3)
Book Image

Mastering Kubernetes - Fourth Edition

3.3 (3)
By: Gigi Sayfan

Overview of this book

The fourth edition of the bestseller Mastering Kubernetes includes the most recent tools and code to enable you to learn the latest features of Kubernetes 1.25. This book contains a thorough exploration of complex concepts and best practices to help you master the skills of designing and deploying large-scale distributed systems on Kubernetes clusters. You’ll learn how to run complex stateless and stateful microservices on Kubernetes, including advanced features such as horizontal pod autoscaling, rolling updates, resource quotas, and persistent storage backends. In addition, you’ll understand how to utilize serverless computing and service meshes. Further, two new chapters have been added. “Governing Kubernetes” covers the problem of policy management, how admission control addresses it, and how policy engines provide a powerful governance solution. “Running Kubernetes in Production” shows you what it takes to run Kubernetes at scale across multiple cloud providers, multiple geographical regions, and multiple clusters, and it also explains how to handle topics such as upgrades, capacity planning, dealing with cloud provider limits/quotas, and cost management. By the end of this Kubernetes book, you’ll have a strong understanding of, and hands-on experience with, a wide range of Kubernetes capabilities.
Table of Contents (21 chapters)
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Index

Creating your own charts

A chart represents a group of files that define a cohesive set of Kubernetes resources. It can range from a simple deployment of a Memcached pod to a complex configuration of a complete web application stack, including HTTP servers, databases, caches, queues, and more.

To organize a chart, its files are structured within a specific directory tree. These files can then be bundled into versioned archives, which can be easily deployed and managed. The key file is Chart.yaml.

The Chart.yaml file

The Chart.yaml file is the main file of a Helm chart. It requires a name and version fields:

  • apiVersion: The API version of the chart.
  • name: The name of the chart, which should match the directory name.
  • version: The version of the chart using the SemVer 2 format.

Additionally, there are several optional fields that can be included in the Chart.yaml file:

  • kubeVersion: A range of compatible Kubernetes versions specified...