Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
5.1 KiB
page_title: Installation on Mac OS X 10.6 Snow Leopard page_description: Please note this project is currently under heavy development. It should not be used in production. page_keywords: Docker, Docker documentation, requirements, virtualbox, ssh, linux, os x, osx, mac
Mac OS X
Note
: These instructions are available with the new release of Docker (version 0.8). However, they are subject to change.
Note
: Docker is still under heavy development! We don’t recommend using it in production yet, but we’re getting closer with each release. Please see our blog post, Getting to Docker 1.0
Docker is supported on Mac OS X 10.6 "Snow Leopard" or newer.
How To Install Docker On Mac OS X
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.
With Homebrew
If you are using Homebrew on your machine, simply run the following
command to install boot2docker
:
brew install boot2docker
Manual installation
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/boot2docker/boot2docker/master/boot2docker > boot2docker
# Mark it executable
chmod +x boot2docker
Docker OS X Client
The docker
daemon is accessed using the
docker
client.
With Homebrew
Run the following command to install the docker
client:
brew install docker
Manual installation
Run the following commands to get it downloaded and set up:
# Get the docker client file
DIR=$(mktemp -d ${TMPDIR:-/tmp}/dockerdl.XXXXXXX) && \
curl -f -o $DIR/ld.tgz https://get.docker.io/builds/Darwin/x86_64/docker-latest.tgz && \
gunzip $DIR/ld.tgz && \
tar xvf $DIR/ld.tar -C $DIR/ && \
cp $DIR/usr/local/bin/docker ./docker
# Set the environment variable for the docker daemon
export DOCKER_HOST=tcp://127.0.0.1:4243
# Copy the executable file
sudo mkdir -p /usr/local/bin
sudo cp docker /usr/local/bin/
And that’s it! Let’s check out how to use it.
How To Use Docker On Mac OS X
The docker
daemon (via boot2docker)
Inside the ~/bin
directory, run the following
commands:
# Initiate the VM
./boot2docker init
# Run the VM (the docker daemon)
./boot2docker up
# To see all available commands:
./boot2docker
# Usage ./boot2docker {init|start|up|pause|stop|restart|status|info|delete|ssh|download}
The docker
client
Once the VM with the docker
daemon is up, you can
use the docker
client just like any other
application.
docker version
# Client version: 0.7.6
# Go version (client): go1.2
# Git commit (client): bc3b2ec
# Server version: 0.7.5
# Git commit (server): c348c04
# Go version (server): go1.2
Forwarding VM Port Range to Host
If we take the port range that docker uses by default with the -P option (49000-49900), and forward same range from host to vm, we’ll be able to interact with our containers as if they were running locally:
# vm must be powered off
for i in {49000..49900}; do
VBoxManage modifyvm "boot2docker-vm" --natpf1 "tcp-port$i,tcp,,$i,,$i";
VBoxManage modifyvm "boot2docker-vm" --natpf1 "udp-port$i,udp,,$i,,$i";
done
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.
Learn More
boot2docker:
See the GitHub page for boot2docker.
If SSH complains about keys:
ssh-keygen -R '[localhost]:2022'
Upgrading to a newer release of boot2docker
To upgrade an initialised VM, you can use the following 3 commands. Your persistence disk will not be changed, so you won’t lose your images and containers:
./boot2docker stop
./boot2docker download
./boot2docker start
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).