Book Image

Docker Orchestration

By : Randall Smith
Book Image

Docker Orchestration

By: Randall Smith

Overview of this book

Docker orchestration is what you need when transitioning from deploying containers individually on a single host to deploying complex multi-container apps on many machines. This book covers the new orchestration features of Docker 1.12 and helps you efficiently build, test, and deploy your application using Docker. You will be shown how to build multi-container applications using Docker Compose. You will also be introduced to the building blocks for multi-host Docker clusters such as registry, overlay networks, and shared storage using practical examples. This book gives an overview of core tools such as Docker Machine, Swarm, and Compose which will enhance your orchestration skills. You’ll learn how to set up a swarm using the decentralized building block. Next, you’ll be shown how to make the most out of the in-built orchestration feature of Docker engine and you’ll use third-party tools such as Kubernetes, Mesosphere, and CoreOS to orchestrate your existing process. Finally, you will learn to deploy cluster hosts on cloud services and automate your infrastructure.
Table of Contents (17 chapters)
Docker Orchestration
About the Author
About the Reviewer
Customer Feedback

Installing Docker Compose

Once your images are built, you need to tell Docker how to run them. Docker Engine is limited in allowing you to define how containers work together. The Docker project provides a solution called Docker Compose. Docker Compose is a great tool for testing out deployments, defining how containers will interact or what external storage they need, or even as a lightweight orchestration tool.

Installing Docker Compose is easy. For Windows and OS X users, docker-compose installs as part of the Docker Toolbox and Docker for Mac and Windows. For Linux users, docker-compose can be downloaded from the Docker repository on GitHub. The following command from the Docker Compose documentation shows you how:

# curl -L  /docker-compose-`uname -s`-`uname -m` > /usr/local/bin/docker-compose
chmod +x /usr/local/bin/docker-compose
  • As shown, the curl command must be run as root in order to have the permissions to write the...