2.16. Docker Machine

2.16.1. Brief introduction ¶

Docker Machine is a tool that allows you to install Docker on a virtual host and use the docker-machine command to manage the host.

Docker Machine can also centrally manage all docker hosts, such as quickly installing docker on 100 servers.

The virtual hosts managed by Docker Machine can be on-board or cloud providers, such as Aliyun, Tencent Cloud, AWS, or DigitalOcean.

Using the docker-machine command, you can start, check, stop, and restart the managed host, upgrade Docker clients and daemons, and configure the Docker client to communicate with your host.

2.16.2. Installation ¶

You need to install Docker before installing Docker Machine.

Docker Machine can be installed on a variety of platforms, including Linux, MacOS, and windows.

Linux installation command ¶

$ base=https://github.com/docker/machine/releases/download/v0.16.0 &&
  curl -L $base/docker-machine-$(uname -s)-$(uname -m) >/tmp/docker-machine &&
  sudo mv /tmp/docker-machine /usr/local/bin/docker-machine &&
  chmod +x /usr/local/bin/docker-machine

MacOS installation command ¶

$ base=https://github.com/docker/machine/releases/download/v0.16.0 &&
  curl -L $base/docker-machine-$(uname -s)-$(uname -m) >/usr/local/bin/docker-machine &&
  chmod +x /usr/local/bin/docker-machine

Windows installation command ¶

If you are a Windows platform, you can use the Git BASH And enter the following command:

$ base=https://github.com/docker/machine/releases/download/v0.16.0 &&
  mkdir -p "$HOME/bin" &&
  curl -L $base/docker-machine-Windows-x86_64.exe > "$HOME/bin/docker-machine.exe" &&
  chmod +x "$HOME/bin/docker-machine.exe"

Check to see if the installation was successful:

$ docker-machine version
docker-machine version 0.16.0, build 9371605

2.16.3. Use ¶

This chapter introduces the use of docker-machine through virtualbox. Other cloud service providers operate in the same way. You can refer to the guidance document of each service provider for details.

1. List the available machines ¶

You can see that there is currently only the default default virtual machine here.

$ docker-machine ls

` <../wp-content/uploads/2019/11/docker-machine1.png>` __

2. Create a machine ¶

Create a machine called test.

$ docker-machine create --driver virtualbox test

–driver Specifies the type of driver used to create the machine, in this case virtualbox.

` <../wp-content/uploads/2019/11/docker-machine2.png>` __

3. Check the ip of the machine ¶

$ docker-machine ip test

` <../wp-content/uploads/2019/11/docker-machine3.png>` __

4. Stop the machine ¶

$ docker-machine stop test

` <../wp-content/uploads/2019/11/docker-machine4.png>` __

5. Start the machine ¶

$ docker-machine start test

` <../wp-content/uploads/2019/11/docker-machine5.png>` __

6. Enter the machine ¶

$ docker-machine ssh test

` <../wp-content/uploads/2019/11/docker-machine6.png>` __

Docker-machine command parameter description ¶

docker-machine active View the Docker host that is currently active.

$ docker-machine ls

NAME      ACTIVE   DRIVER         STATE     URL
dev       -        virtualbox     Running   tcp://192.168.99.103:2376
staging   *        digitalocean   Running   tcp://203.0.113.81:2376

$ echo $DOCKER_HOST
tcp://203.0.113.81:2376

$ docker-machine active
staging

config View the connection information of the currently active Docker host.
create : create a Docker host
env Displays the environment variables required to connect to a host
inspect : output the details of the specified Docker in json format
ip : get the address of the specified Docker host
kill Directly kill the specified Docker host
ls List all management hosts
provision Reconfigure the specified host
regenerate-certs Regenerate TLS information for a host
restart Restart the specified host
rm Delete a Docker host, and the corresponding virtual machine will also be deleted
ssh Connect to the host through SSH and execute the command
scp Remote replication of data through scp between Docker hosts and between Docker hosts and local hosts
mount Use SSHFS to mount or unmount directories from your computer
start Start a specified Docker host, and if the object is a virtual machine, the virtual machine will be started
status : get the status of the specified Docker host (including: Running, Paused, Saved, Stopped, Stopping, Starting, Error), etc.
stop : stop a specified Docker host
upgrade Update the Docker version of a specified host to the latest
url : get the listening URL of the specified Docker host
version Display the version of Docker Machine or the version of host Docker
help : show help information