Book Image

Mastering Docker - Third Edition

By : Russ McKendrick, Scott Gallagher
Book Image

Mastering Docker - Third Edition

By: Russ McKendrick, Scott Gallagher

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 an impact on the world of web development. But how can you make sure you're keeping up with the innovations it's driving, or be sure you're using it to its full potential? Mastering Docker shows you how; this book not only demonstrates how to use Docker more effectively, but also helps you rethink and reimagine what's possible with it. You will cover concepts such as building, managing, and storing images, along with best practices to make you confident, before delving more into Docker security. You'll find everything related to extending and integrating Docker in new and innovative ways. Docker Compose, Docker Swarm, and Kubernetes will help you take control of your containers in an efficient manner. By the end of the book, you will 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 (17 chapters)

Docker Swarm services and stacks

So far, we have looked at the following commands:

$ docker swarm <command>
$ docker node <command>

These two commands allow us to bootstrap and manage our Docker Swarm cluster from a collection of existing Docker hosts. The next two commands we are going to look at are as follows:

$ docker service <command>
$ docker stack <command>

The service and stack commands allow us to execute tasks that, in turn, launch, scale, and manage containers within our Swarm cluster.


The service command is a way of launching containers that take advantage of the Swarm cluster. Let's look at launching a really basic single-container service on our Swarm cluster. To do this, run...