Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
Book Image

The Kubernetes Workshop

By: Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb

Overview of this book

Thanks to its extensive support for managing hundreds of containers that run cloud-native applications, Kubernetes is the most popular open source container orchestration platform that makes cluster management easy. This workshop adopts a practical approach to get you acquainted with the Kubernetes environment and its applications. Starting with an introduction to the fundamentals of Kubernetes, you’ll install and set up your Kubernetes environment. You’ll understand how to write YAML files and deploy your first simple web application container using Pod. You’ll then assign human-friendly names to Pods, explore various Kubernetes entities and functions, and discover when to use them. As you work through the chapters, this Kubernetes book will show you how you can make full-scale use of Kubernetes by applying a variety of techniques for designing components and deploying clusters. You’ll also get to grips with security policies for limiting access to certain functions inside the cluster. Toward the end of the book, you’ll get a rundown of Kubernetes advanced features for building your own controller and upgrading to a Kubernetes cluster without downtime. By the end of this workshop, you’ll be able to manage containers and run cloud-based applications efficiently using Kubernetes.
Table of Contents (20 chapters)
Preface

Introduction

As you will recall from Chapter 2, An Overview of Kubernetes, the API server acts as the central hub that communicates with all the different components in Kubernetes. In the previous chapter, we took a look at how we can use kubectl to instruct the API server to do various things.

In this chapter, we will take a further look into the components that make up the API server. As the API server is at the center of our entire Kubernetes system, it is important to learn how to effectively communicate with the API server itself and how API requests are processed. We will also look at various API concepts, such as resources, API groups, and API versions, which will help you understand the HTTP requests and responses that are made to the API server. Finally, we will interact with the Kubernetes API using multiple REST clients to achieve many of the same results we did in the previous chapter using the kubectl command-line tool.