Multidocker

Multidocker enables multiple Docker daemons on a single machine. No VM is required.

I made this tool so that I can easily and quickly try the latest Docker bundle.

WARNING: Running multiple Docker daemons is not fully supported. See also: docker/docker#22763

How to install

$ go install github.com/AkihiroSuda/multidocker/cmd/multidocker

Binary release will be available soon.

Usage

Supported Docker Engine version: 1.12 or later

$ cd ~/WORK
$ git clone https://github.com/docker/docker.git
$ cd docker
$ make

$ sudo $GOPATH/bin/multidocker create --engine-install-bundle=$HOME/WORK/docker/bundles/latest --engine-storage-driver aufs foobar
$ eval $(multidocker env --set-client-path foobar)
$ docker info

Note (incompatible to Docker Machine):

• multidocker create copies the binaries under the bundle directory specified in --engine-install-bundle to /var/lib/multidocker/hosts/foobar/bin.
• eval $(multidocker env --set-client-path foobar) sets PATH to /var/lib/multidocker/hosts/foobar/bin:$PATH.

TODO

• Support Docker <= 1.11
• Support dynbinary-daemon
• Support more installation options (e.g. --engine-install-release=1.xx?)
• Support Swarm?
• Support Windows?
• Support UML kernel for ease of testing multiple kernels? (Maybe it should be docker-machine-driver-uml?)
• Reimplement as a Docker Machine driver? (requires docker/machine#2822 to be implemented)

Related tools

• docker-machine-driver-dind
• sekexe