Swarm: a Docker-native clustering system 
Docker Swarm is native clustering for Docker. It turns a pool of Docker hosts into a single, virtual host.
Swarm serves the standard Docker API, so any tool which already communicates with a Docker daemon can use Swarm to transparently scale to multiple hosts: Dokku, Compose, Krane, Flynn, Deis, DockerUI, Shipyard, Drone, Jenkins... and, of course, the Docker client itself.
Like other Docker projects, Swarm follows the "batteries included but removable" principle. It ships with a simple scheduling backend out of the box, and as initial development settles, an API will develop to enable pluggable backends. The goal is to provide a smooth out-of-box experience for simple use cases, and allow swapping in more powerful backends, like Mesos, for large scale production deployments.
Installation and documentation
Full documentation is available here.
Development installation
You can download and install from source instead of using the Docker image.
Ensure you have golang and git client installed (e.g. apt-get install golang git on Ubuntu).
You may need to set $GOPATH, e.g mkdir ~/gocode; export GOPATH=~/gocode.
The install swarm binary to your $GOPATH directory.
go get -u github.com/docker/swarm
From here, you can follow the instructions in the main documentation,
replacing docker run swarm with just swarm.
Participating
We welcome pull requests and patches; come say hi on IRC, #docker-swarm on freenode.
Creators
Andrea Luzzardi
Victor Vieux
Copyright and license
Code and documentation copyright 2014-2015 Docker, inc. Code released under the Apache 2.0 license.
Docs released under Creative commons.