Swarm: a Docker-native clustering system
swarm is a simple tool which controls a cluster of Docker hosts and exposes it as a single "virtual" host.
swarm uses the standard Docker API as its frontend, which means any tool which speaks Docker can control swarmd transparently: dokku, fig, krane, flynn, deis, docker-ui, shipyard, drone.io, Jenkins... and of course the Docker client itself.
Like the other Docker projects, swarm follows the "batteries included but removable" principle. It ships with a simple scheduling backend out of the box. 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.
Example usage
# create a cluster
$ swarm create
6856663cdefdec325839a4b7e1de38e8
# on each of your nodes, start the swarm agent
$ docker run -d -p 4243:4243 swarm join --token=6856663cdefdec325839a4b7e1de38e8 --addr=<docker_daemon_ip1:4243>
$ docker run -d -p 4243:4243 swarm join --token=6856663cdefdec325839a4b7e1de38e8 --addr=<docker_daemon_ip2:4243>
$ docker run -d -p 4243:4243 swarm join --token=6856663cdefdec325839a4b7e1de38e8 --addr=<docker_daemon_ip3:4243>
...
# start the manager on any machine or your laptop
$ docker run -d -p 4243:4243 swarm manage --token=6856663cdefdec325839a4b7e1de38e8
# use the regular docker cli
$ docker -H <ip:4243> ps
$ docker -H <ip:4243> run ...
$ docker -H <ip:4243> info
...
# list nodes in your cluster
$ swarm list --token=6856663cdefdec325839a4b7e1de38e8
http://<docker_daemon_ip1:4243>
http://<docker_daemon_ip2:4243>
http://<docker_daemon_ip3:4243>
Creators
Andrea Luzzardi
Victor Vieux
Copyright and license
Code and documentation copyright 2014 Docker, inc. Code released under the Apache 2.0 license. Docs released under Creative commons.