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The Kubernetes Workshop

The Kubernetes Workshop

By : Zachary Arnold , Sahil Dua , Wei Huang , Faisal Masood, Mélony Qin, Mohammed Abu Taleb
4.9 (9)
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The Kubernetes Workshop

The Kubernetes Workshop

4.9 (9)
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)
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Preface

Interacting with Clusters Using the Kubernetes API

Up until now, we've been using the Kubernetes kubectl command-line tool, which made interacting with our cluster quite convenient. It does that by extracting the API server address and authentication information from the client kubeconfig file, which is located in ~/.kube/config by default, as we saw in the previous chapter. In this section, we will look at the different ways to directly access the API server with HTTP clients such as curl.

There are two possible ways to directly access the API server via the REST API—by using kubectl in proxy mode or by providing the location and authentication credentials directly to the HTTP client. We will explore both methods to understand the pros and cons of each one.

Accessing the Kubernetes API Server Using kubectl as a Proxy

kubectl has a great feature called kubectl proxy, which is the recommended approach for interacting with the API server. This is recommended because...

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