Mac OS X上安装

VirtualBox¶

Docker on OS X needs VirtualBox to run. To begin with, head over to VirtualBox Download Page and get the tool for OS X hosts x86/amd64.

Once the download is complete, open the disk image, run the set up file (i.e. VirtualBox.pkg) and install VirtualBox. Do not simply copy the package without running the installer.

boot2docker¶

boot2docker provides a handy script to easily manage the VM running the docker daemon. It also takes care of the installation for the OS image that is used for the job.

Open up a new terminal window, if you have not already.

Run the following commands to get boot2docker:

# Enter the installation directory
cd ~/bin

# Get the file
curl https://raw.github.com/steeve/boot2docker/master/boot2docker > boot2docker

# Mark it executable
chmod +x boot2docker

Docker OS X Client¶

The docker daemon is accessed using the docker client.

Run the following commands to get it downloaded and set up:

# Get the file
curl -o docker http://get.docker.io/builds/Darwin/x86_64/docker-latest

# Mark it executable
chmod +x docker

# Set the environment variable for the docker daemon
export DOCKER_HOST=tcp://

# Copy the executable file
sudo cp docker /usr/local/bin/

And that’s it! Let’s check out how to use it.

The docker daemon (via boot2docker)¶

Inside the ~/bin directory, run the following commands:

# Initiate the VM
./boot2docker init

# Run the VM (the docker daemon)
./boot2docker up

# To see all available commands:
./boot2docker

# Usage ./boot2docker {init|start|up|pause|stop|restart|status|info|delete|ssh|download}

The docker client¶

Once the VM with the docker daemon is up, you can use the docker client just like any other application.

docker version
# Client version: 0.7.6
# Go version (client): go1.2
# Git commit (client): bc3b2ec
# Server version: 0.7.5
# Git commit (server): c348c04
# Go version (server): go1.2

SSH-ing The VM¶

If you feel the need to connect to the VM, you can simply run:

./boot2docker ssh

# User: docker
# Pwd:  tcuser

You can now continue with the Hello World example.

boot2docker:¶

See the GitHub page for boot2docker.

If SSH complains about keys:¶

ssh-keygen -R '[localhost]:2022'

About the way Docker works on Mac OS X:¶

Docker has two key components: the docker daemon and the docker client. The tool works by client commanding the daemon. In order to work and do its magic, the daemon makes use of some Linux Kernel features (e.g. LXC, name spaces etc.), which are not supported by OS X. Therefore, the solution of getting Docker to run on OS X consists of running it inside a lightweight virtual machine. In order to simplify things, Docker comes with a bash script to make this whole process as easy as possible (i.e. boot2docker).