Create a Docker Swarm with docker-machine and enable dockerd Unix Sockets

create-docker-swarm-w-unix-socket.sh

export SWARM_TOKEN=$(docker run swarm create)
docker-machine create \
    	-d virtualbox \
    	--engine-env 'DOCKER_OPTS="-H unix:///var/run/docker.sock"' \
    	--swarm \
    	--swarm-master \
    	--swarm-discovery token://$SWARM_TOKEN \
    	swarm-master

for NODE in {1..3}; 
do 
docker-machine create \
	--engine-env 'DOCKER_OPTS="-H unix:///var/run/docker.sock"' \
	-d virtualbox \
	--swarm \
	--swarm-discovery token://$SWARM_TOKEN  \
	"swarm-agent-$NODE"
done 

Related blog post: http://blog.sematext.com/2016/01/12/docker-swarm-collecting-metrics-events-logs/