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 explored Docker Swarm. We took a look at how to install Docker Swarm and the Docker Swarm components that make up Docker Swarm. We took a look at how to use Docker Swarm, joining, listing, and managing Swarm manager and worker nodes. We reviewed the service and stack commands and how to use them, and spoke about the Swarm inbuilt ingress load balancer, overlay networks, and scheduler.

Now, Docker Swarm is in an interesting state at the time of writing, as Docker Swarm was one of the technologies acquired by Mirantis as part of the Docker Enterprise sale, and while Mirantis have said that they will offer support for existing Docker Swarm clusters for 2 years (that was in November 2019), they haven't given much information on the future of Docker Swarm.

This isn't surprising as Mirantis do a lot of work with another container cluster called Kubernetes, which we are going to be looking at in Chapter 11, Docker and Kubernetes. Before then, in...