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

The Docker Swarm topics


There are three advanced topics we will take a look at in this section:

  • Discovery services

  • Advanced scheduling

  • The Docker Swarm API

Discovery services

You can also use services such as etcd, ZooKeeper, consul, and many others to automatically add nodes to your Swarm cluster as well as do other things such as list the nodes or manage them. Let's take a look at consul and how you can use it. This will be the same for each discovery service that you might use. It just involves switching out the word consul with the discovery service you are using.

On each node, you will need to do something different in how you join the machines. Earlier, we did something like this:

$ docker-machine create \
-d virtualbox \
--swarm \
--swarm-discovery token://85b335f95e9a37b679e2ea9e6ad8d6361 \
swarm-node1

Now, we would do something similar to the following (based upon the discovery service you are using):

$ docker-machine create \
-d virtualbox \
--swarm \
join --advertise=<swarm-node1_ip...