Docker - docker-machine

Docker Machine is a command line client that lets you

• manage your Docker host (virtual host or machine)
• and install Docker Engine on them.

You can use Machine to create Docker hosts:

• on your local Mac or Windows box,
• on your company network, in your data center,
• or on cloud providers like AWS or Digital Ocean.

See docker/machine

You can use Docker Machine to:

• Install and run Docker on Mac or Windows
• Provision and manage multiple remote Docker hosts
• Provision Swarm clusters

Docker Machine uses Boot2Docker to initialise, start, stop and delete the VirtualBox's VM right from the command line.

$ docker-machine ls

• On my machine

NAME      ACTIVE   DRIVER       STATE     URL   SWARM   DOCKER   ERRORS
default            virtualbox   Timeout

• From the doc:

NAME                ACTIVE   DRIVER       STATE     URL                        SWARM
dev                 *        virtualbox   Running   tcp://192.168.99.100:2376
my-docker-machine            virtualbox   Stopped
default                      virtualbox   Stopped

Important: If you are using Docker for Mac or Docker for Windows, you can skip this step.

Example:

docker-machine create \
    --driver virtualbox \
    --virtualbox-memory 8192 \
    --virtualbox-disk-size "40960"  \
    default

docker-machine stop
VBoxManage modifyvm default --cpus 2
VBoxManage modifyvm default --memory 8192
docker-machine start

docker-machine ssh

                        ##         .                                                     
                  ## ## ##        ==                                                     
               ## ## ## ## ##    ===                                                     
           /"""""""""""""""""\___/ ===                                                   
      ~~~ {~~ ~~~~ ~~~ ~~~~ ~~~ ~ /  ===- ~~~                                            
           \______ o           __/                                                       
             \    \         __/                                                          
              \____\_______/                                                             
 _                 _   ____     _            _                                           
| |__   ___   ___ | |_|___ \ __| | ___   ___| | _____ _ __                               
| '_ \ / _ \ / _ \| __| __) / _` |/ _ \ / __| |/ / _ \ '__|                              
| |_) | (_) | (_) | |_ / __/ (_| | (_) | (__|   <  __/ |                                 
|_.__/ \___/ \___/ \__|_____\__,_|\___/ \___|_|\_\___|_|                                 
Boot2Docker version 1.12.3, build HEAD : 7fc7575 - Thu Oct 27 17:23:17 UTC 2016          
Docker version 1.12.3, build 6b644ec                                                     
[email protected]:~$ exit                                                                   

$ docker-machine rm my-docker-machine

Successfully removed my-docker-machine

Docker - Host Environment ( OS )

docker-machine env default

# In cmder, see it as cmd but you can ask the output format with the shell argument
docker-machine env default -shell bash

Output:

SET DOCKER_TLS_VERIFY=1
SET DOCKER_HOST=tcp://192.168.99.100:2376
SET DOCKER_CERT_PATH=C:\Users\gerard\.docker\machine\machines\default
SET DOCKER_MACHINE_NAME=default
REM Run this command to configure your shell:
REM     @FOR /f "tokens=*" %i IN ('docker-machine env default') DO @%i

docker-machine ip

192.168.99.100

On Windows, all the metadata (disk, config) are stored at:

C:\Users\user\.docker\machine\machines\machineName
# Example
C:\Users\gerard\.docker\machine\machines\default

• https://docs.docker.com/machine/overview/
• https://github.com/docker/machine