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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

The Need for Container Orchestration

The k8s-for-beginners container we built in Exercise 1.01, Creating a Docker Image and Uploading it to Docker Hub, is nothing but a simple demonstration. In the case of a serious workload deployed in a production environment, and to enable hundreds of thousands of containers running in a cluster, we have many more things to consider. We need a system to manage the following problems:

Container Interactions

As an example, suppose that we are going to build a web app with a frontend container displaying information and accepting user requests, and a backend container serving as a datastore that interacts with the frontend container. The first challenge is to figure out how to specify the address of the backend container to the frontend container. It is not a good idea to hardcode the IP, as the container IP is not static. In a distributed system, it is not uncommon for containers or machines to fail due to unexpected issues. So, the link between...

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