Book Image

The Kubernetes Workshop

By : Zachary Arnold, Sahil Dua, Wei Huang, Faisal Masood, Mélony Qin, Mohammed Abu Taleb
5 (1)
Book Image

The Kubernetes Workshop

5 (1)
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

Summary

In this chapter, we took a closer look at the Kubernetes API server, the way that Kubernetes uses the RESTful API, and how API resources are defined. We learned that all commands from the kubectl command-line utility are translated into RESTful HTTP API calls and are sent to the API server. We learned that API calls go through multiple stages, including authentication, authorization, and admission control. We also had a closer look at each stage and some of the modules involved.

Then, we learned about some API resources, how they are categorized as namespace-scoped or cluster-scoped resources, and their API group and API version. We then learned how we can use this information to build an API path for interacting with the Kubernetes API.

We also applied what we learned by making an API call directly to the API server, using the curl HTTP client to interact with objects by using different authentication methods, such as ServiceAccounts and an X.509 certificate.

In...