Book Image

Mastering Docker

By : Scott Gallagher
Book Image

Mastering Docker

By: Scott Gallagher

Overview of this book

<p><span id="description" class="sugar_field">Docker has been a game-changer when it comes to virtualization – it has now grown to become a key driver of innovation beyond system administration, having an impact on the world of web development and more. But how can you make sure you’re keeping up with the innovations that it’s driving? How can you be sure you’re using it to its full potential? Mastering Docker shows you how – it not only demonstrates how to use Docker more effectively, it also helps you rethink and reimagine what’s possible with Docker.</span></p> <p><span class="sugar_field"><span id="description" class="sugar_field"> Covering best practices to make sure you’re confident with and the basics, such as building, managing and storing containers, before diving deeper into Docker security, you’ll find everything you need to help you extend and integrate Docker in new and innovative ways. You’ll learn how to take greater control over your containers using some of Docker’s most sophisticated and useful tools, such as Docker compose and Docker swarm, before bringing together everything you already know and have learned to put your containers into production and monitor them for safety and performance.</span></span></p> <p><span class="sugar_field"><span class="sugar_field"><span id="description" class="sugar_field"> Beyond this, you’ll also explore even more advanced strategies, as you learn how to extend and integrate Docker with cloud platforms such as Heroku and OpenStack, and how tools such as Kubernetes can improve the way you manage large-scale container orchestration. With further guidance on how you can use configuration management tools such as Puppet, Chef and PowerShell, by the end of the book you’ll have a broad and detailed sense of exactly what’s possible with Docker – and how seamlessly it fits with a range of other platforms and tools.</span></span></span></p>
Table of Contents (20 chapters)
Mastering Docker
Credits
About the Author
About the Reviewer
www.PacktPub.com
Preface
Index

Docker Swarm


In this section, we will do a brief overview of Docker Swarm. We will take a look at what it is, what you can do with it to manage your containers, and what to look forward to in the later chapters with regards to Docker Swarm.

What is Docker Swarm?

The idea behind Docker Swarm is to have native clustering available inside Docker. This will allow you to both easily scale your environments as well as manage them from a central location. The best part is that, since it's tied so tightly with the Docker API, any command you use with Docker can be used in conjunction with managing the nodes in your Swarm cluster. The setup is very simple as follows:

  1. You install the Swarm component through a docker pull command.

  2. You then set up and configure the Swarm manager.

  3. Lastly, you add the nodes to Docker Swarm.

This setup uses the TCP communication between all the Swarm nodes through an open TCP port. It also requires that you have Docker installed on each node (as if we'd not want it installed...