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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

Introduction

In Chapter 5, Pods, we learned that Pods are the minimal unit of deployment in Kubernetes. Pods can have multiple containers, and each container can have a container image associated with it. This container image generally packages the target application that you plan to run. Once the developers are satisfied that the code is running as expected, the next step is to promote the code to testing, integration, and production environments.

Easy, right? One problem, however, is that as we move our packaged container from one environment to another, although the application remains the same, it needs environment-specific data, for example, the database URL to connect to. To overcome this problem, we can write our applications in such a way that the environment-specific data is provided to the application by the environment it is being deployed into.

In this chapter, we will discover what Kubernetes provides to associate environment-specific data with our application...

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