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docs: Requirements And Installation on Mac OS X 10.6 Snow Leopard
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Andy Rothfusz
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:title: Installing Docker on a Mac
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:description: Installing Docker on a Mac
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:keywords: Docker, Docker documentation, virtualbox, git, ssh
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:title: Requirements and Installation on Mac OS X 10.6 Snow Leopard
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:description: Please note this project is currently under heavy development. It should not be used in production.
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:keywords: Docker, Docker documentation, requirements, virtualbox, ssh, linux, os x, osx, mac
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.. _install_using_vagrant:
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.. macosx:
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Installing Docker on a Mac
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==========================
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Mac OS X
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========
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This guide explains how to install a full Docker setup on your Mac,
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using Virtualbox and Vagrant.
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.. note::
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Install Vagrant and Virtualbox
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------------------------------
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These instructions are available with the new release of Docker
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(version 0.8). However, they are subject to change.
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.. include:: install_header.inc
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.. include:: install_unofficial.inc
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Docker is supported on Mac OS X 10.6 "Snow Leopard" or newer.
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#. Install virtualbox from https://www.virtualbox.org/ (or use your
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package manager)
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#. Install vagrant from http://www.vagrantup.com/ (or use your package
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manager)
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#. Install git if you had not installed it before, check if it is
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installed by running ``git`` in a terminal window
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How To Install Docker On Mac OS X
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=================================
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Spin it up
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VirtualBox
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----------
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1. Fetch the docker sources (this includes the ``Vagrantfile`` for
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machine setup).
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Docker on OS X needs VirtualBox to run. To begin with, head over to
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`VirtualBox Download Page`_ and get the tool for ``OS X hosts x86/amd64``.
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.. code-block:: bash
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.. _VirtualBox Download Page: https://www.virtualbox.org/wiki/Downloads
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git clone https://github.com/dotcloud/docker.git
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Once the download is complete, open the disk image, run the set up file
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(i.e. ``VirtualBox.pkg``) and install VirtualBox. Do not simply copy the
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package without running the installer.
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2. Change directory to docker
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boot2docker
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-----------
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.. code-block:: bash
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`boot2docker`_ provides a handy script to easily manage the VM running the
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``docker`` daemon. It also takes care of the installation for the OS image
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that is used for the job.
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cd docker
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.. _GitHub page: https://github.com/steeve/boot2docker
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3. Run vagrant from the sources directory
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Open up a new terminal window, if you have not already.
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.. code-block:: bash
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vagrant up
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Vagrant will:
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* Download the 'official' Precise64 base ubuntu virtual machine image from vagrantup.com
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* Boot this image in virtualbox
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* Follow official :ref:`ubuntu_linux` installation path
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You now have a Ubuntu Virtual Machine running with docker pre-installed.
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Connect
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-------
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To access the VM and use Docker, Run ``vagrant ssh`` from the same directory as where you ran
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``vagrant up``. Vagrant will connect you to the correct VM.
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Run the following commands to get boot2docker:
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.. code-block:: bash
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vagrant ssh
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# Enter the application directory
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cd ~/Applications
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# Get the file
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curl https://raw.github.com/steeve/boot2docker/master/boot2docker > boot2docker
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# Mark it executable
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chmod +x boot2docker
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Docker OS X Client
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------------------
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Upgrades
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--------
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Since your local VM is based on Ubuntu, you can upgrade docker by logging in to the
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VM and calling ``apt-get``:
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The ``docker`` daemon is accessed using the ``docker`` client.
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Run the following commands to get it downloaded and set up:
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.. code-block:: bash
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# Log into the VM
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vagrant ssh
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# Get the file
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curl -o docker http://get.docker.io/builds/Darwin/x86_64/docker-latest
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# Mark it executable
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chmod +x docker
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# update your sources list
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sudo apt-get update
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# Set the environment variable for the docker daemon
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export DOCKER_HOST=tcp://
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# Copy the executable file
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sudo cp docker /usr/local/bin/
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# install the latest
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sudo apt-get install lxc-docker
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And that’s it! Let’s check out how to use it.
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How To Use Docker On Mac OS X
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=============================
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Run
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---
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The ``docker`` daemon (via boot2docker)
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---------------------------------------
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Now you are in the VM, run docker
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Inside the ``~/Application`` directory, run the following commands:
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.. code-block:: bash
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sudo docker
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# Initiate the VM
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./boot2docker init
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# Run the VM (the docker daemon)
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./boot2docker up
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# To see all available commands:
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./boot2docker
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Continue with the :ref:`hello_world` example.
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# Usage ./boot2docker {init|start|up|pause|stop|restart|status|info|delete|ssh|download}
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The ``docker`` client
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---------------------
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Once the VM with the ``docker`` daemon is up, you can use the ``docker``
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client just like any other application.
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.. code-block:: bash
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docker version
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# Client version: 0.7.6
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# Go version (client): go1.2
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# Git commit (client): bc3b2ec
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# Server version: 0.7.5
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# Git commit (server): c348c04
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# Go version (server): go1.2
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SSH-ing The VM
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--------------
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If you feel the need to connect to the VM, you can simply run:
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.. code-block:: bash
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./boot2docker ssh
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# User: docker
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# Pwd: tcuser
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You can now continue with the :ref:`hello_world` example.
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Learn More
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==========
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boot2docker:
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------------
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See the GitHub page for `boot2docker`_.
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.. _boot2docker: https://github.com/steeve/boot2docker
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If SSH complains about keys:
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----------------------------
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.. code-block:: bash
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ssh-keygen -R '[localhost]:2022'
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About the way Docker works on Mac OS X:
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---------------------------------------
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Docker has two key components: the ``docker`` daemon and the ``docker``
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client. The tool works by client commanding the daemon. In order to
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work and do its magic, the daemon makes use of some Linux Kernel
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features (e.g. LXC, name spaces etc.), which are not supported by OS X.
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Therefore, the solution of getting Docker to run on OS X consists of
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running it inside a lightweight virtual machine. In order to simplify
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things, Docker comes with a bash script to make this whole process as
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easy as possible (i.e. boot2docker).
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