Book Image

Mastering Docker, Fourth Edition - Fourth Edition

Book Image

Mastering Docker, Fourth Edition - Fourth Edition

Overview of this book

Docker has been a game changer when it comes to how modern applications are deployed and created. It has now grown into a key driver of innovation beyond system administration, with a significant impact on the world of web development. Mastering Docker shows you how you can ensure that you're keeping up with the innovations it's driving and be sure you're using it to its full potential. This fourth edition not only demonstrates how to use Docker more effectively but also helps you rethink and reimagine what you can achieve with it. You'll start by building, managing, and storing images along with exploring best practices for working with Docker confidently. Once you've got to grips with Docker security, the book covers essential concepts for extending and integrating Docker in new and innovative ways. You'll also learn how to take control of your containers efficiently using Docker Compose, Docker Swarm, and Kubernetes. By the end of this Docker book, you’ll have a broad yet detailed sense of what's possible with Docker and how seamlessly it fits in with a range of other platforms and tools.
Table of Contents (22 chapters)
1
Section 1: Getting Up and Running with Docker
8
Section 2: Clusters and Clouds
16
Section 3: Best Practices

Summary

In this chapter, we looked at launching Kubernetes clusters in various clouds and running the same demo application in all of them. I am sure that by the end of the chapter you were quite bored of launching the same application over and over again; however, that was the point.

We have looked at four very different and traditionally incompatible cloud providers and deployed the same application using the same tools and commands across all four of them. Admittedly, we had to make some allowances for the different versions of Kubernetes being used, but for the most part, we didn't have to make any provider-specific allowances once we started working with kubectl.

This is one of the key reasons why Kubernetes has become so popular: it truly does allow you to define and distribute your applications in a platform-agnostic way—even just a few years ago, being able to deploy an application locally and then across four public cloud providers using the same set of...