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Adding in updates for Mac for birthday.

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Signed-off-by: Mary Anthony <mary.anthony@docker.com>
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page_title: Installation on Mac OS X
page_description: Instructions for installing Docker on OS X using boot2docker.
page_title: Installation on Mac OS X
page_description: Instructions for installing Docker on OS X using boot2docker.
page_keywords: Docker, Docker documentation, requirements, boot2docker, VirtualBox, SSH, Linux, OSX, OS X, Mac
# Installing Docker on Mac OS X
# Install Docker on Mac OS X
> **Note:**
> Docker is supported on Mac OS X 10.6 "Snow Leopard" or newer.
Because the Docker daemon uses Linux-specific kernel features, you can't run
Docker natively in OS X. Instead, you must install the Boot2Docker application.
Boot2Docker includes a VirtualBox VM, Docker itself, and the Boot2Docker
management tool.
Because the Docker Engine uses Linux-specific kernel features, you'll need to use a
lightweight virtual machine (VM) to run it on OS X. You use the OS X Docker client to
control the virtualized Docker Engine to build, run, and manage Docker containers.
The Boot2Docker management tool is a lightweight Linux virtual machine made
specifically to run the Docker daemon on Mac OS X. The VirtualBox VM runs
completely from RAM, is a small ~24MB download, and boots in approximately 5s.
To make this process easier, we've built a helper application called
[Boot2Docker](https://github.com/boot2docker/boot2docker) that installs a
virtual machine (using VirtualBox) that's all set up to run the Docker daemon.
Your Mac must be running OS X 10.6 "Snow Leopard" or newer to run Boot2Docker.
## Demonstration
<iframe width="640" height="360" src="//www.youtube.com/embed/wQsrKX4588U?rel=0" frameborder="0" allowfullscreen></iframe>
## Learn the key concepts before installing
In a Linux installation, your local machine is the Docker host. The Docker
client, the Docker daemon, and any containers run directly on this host. This
means you can address ports on a Docker container using standard addressing
such as `localhost:8000` or `0.0.0.0:8376`.
## Installation
![Linux Architecture Diagram](/installation/images/linux_docker_host.png)
1. Download the latest release of the [Docker for OS X Installer](
https://github.com/boot2docker/osx-installer/releases/latest) (Look for the
green Boot2Docker-x.x.x.pkg button near the bottom of the page.)
In an OS X installation, the `docker` daemon is running inside a Linux virtual
machine provided by Boot2Docker.
2. Run the installer by double-clicking the downloaded package, which will install a
VirtualBox VM, Docker itself, and the Boot2Docker management tool.
![](/installation/images/osx-installer.png)
![OSX Architecture Diagram](/installation/images/mac_docker_host.png)
3. Locate the `Boot2Docker` app in your `Applications` folder and run it.
Or, you can initialize Boot2Docker from the command line by running:
When running on OS X, the Docker host address is that of the virtual Linux
machine. Its IP address is assigned when you start the `boot2docker` process.
$ boot2docker init
$ boot2docker start
$ $(boot2docker shellinit)
A terminal window will open and you'll see the virtual machine starting up.
Once you have an initialized virtual machine, you can control it with `boot2docker stop`
and `boot2docker start`.
## Install Boot2Docker
1. Go to the [boo2docker/osx-installer ](
https://github.com/boot2docker/osx-installer/releases/latest) release page.
> **Note:**
> If you see a message in the terminal that looks something like this:
>
> `To connect the Docker client to the Docker daemon, please set: export
DOCKER_HOST=tcp://192.168.59.103:2375`
>
you can safely set the environment variable as instructed.
2. Click the `Boot2Docker-x.x.x.pkg` link in the "Downloads" section.
View the
[Boot2Docker ReadMe](https://github.com/boot2docker/boot2docker/blob/master/README.md)
for more information.
Your browser downloads the package to your folder.
## Upgrading
3. Install Boot2Docker by double-clicking the package.
1. Download the latest release of the [Docker for OS X Installer](
https://github.com/boot2docker/osx-installer/releases/latest)
The installer places a `Boot2Docker` app in your `Applications` folder.
2. If Boot2Docker is currently running, stop it with `boot2docker stop`. Then, run
the installer package, which will update Docker and the Boot2Docker management tool.
The installation places the `docker` and `boot2docker` binaries in your
`/usr/local/bin` directory.
3. To complete the upgrade, you also need to update your existing virtual machine. Open a
terminal window and run:
$ boot2docker stop
$ boot2docker download
$ boot2docker start
## Start the Boot2Docker Application
This will download an .iso image containing a fresh VM and start it up. Your upgrade is
complete. You can test it by following the directions below.
To run `docker` containers, you first start the `boot2docker` VM and then issue
`docker` commands to create, load, and manage containers. You can launch
`boot2docker` from your Applications folder or from the command line.
## Running Docker
> **NOTE**: Boot2Docker is designed as a development tool. You should not use
> it for any kind of production workloads.
{{ include "no-remote-sudo.md" }}
### From the Applications folder
When you launch the "Boot2Docker" application from your "Applications" folder, the
application:
From your terminal, you can test that Docker is running with our small `hello-world`
example image:
Start the vm (`boot2docker start`) and then run:
* opens a terminal window
$ docker run hello-world
* creates a $HOME/.boot2docker directory
This should download the `hello-world` image, which then creates a small
container with an executable that prints a brief `Hello from Docker.` message.
* creates a VirtualBox ISO and certs
## Container port redirection
* starts a VirtualBox VM running the `docker` daemon
The latest version of `boot2docker` sets up a host-only network adaptor which provides
access to the container's ports.
Once the launch completes, you can run `docker` commands. A good way to verify
your setup succeeded is to run the `hello-world` container.
If you run a container with an exposed port,
$ docker hello-world
Unable to find image 'hello-world:latest' locally
511136ea3c5a: Pull complete
31cbccb51277: Pull complete
e45a5af57b00: Pull complete
hello-world:latest: The image you are pulling has been verified. Important: image verification is a tech preview feature and should not be relied on to provide security.
Status: Downloaded newer image for hello-world:latest
Hello from Docker.
This message shows that your installation appears to be working correctly.
$ docker run --rm -i -t -p 80:80 nginx
To generate this message, Docker took the following steps:
1. The Docker client contacted the Docker daemon.
2. The Docker daemon pulled the "hello-world" image from the Docker Hub.
(Assuming it was not already locally available.)
3. The Docker daemon created a new container from that image which runs the
executable that produces the output you are currently reading.
4. The Docker daemon streamed that output to the Docker client, which sent it
to your terminal.
then you should be able to access that Nginx server using the IP address reported by:
To try something more ambitious, you can run an Ubuntu container with:
$ docker run -it ubuntu bash
$ boot2docker ip
For more examples and ideas, visit:
http://docs.docker.com/userguide/
Typically, it is 192.168.59.103:2375, but VirtualBox's DHCP implementation might change
this address in the future.
A more typical way to start and stop `boot2docker` is using the command line.
# Further details
### From your command line
If you are curious, the username for the boot2docker default user is `docker` and the
password is `tcuser`.
Initialize and run `boot2docker` from the command line, do the following:
The Boot2Docker management tool provides several additional commands for working with the
VM and Docker:
1. Create a new Boot2Docker VM.
$ ./boot2docker
Usage: ./boot2docker [<options>]
{help|init|up|ssh|save|down|poweroff|reset|restart|config|status|info|ip|delete|download|version} [<args>]
$ boo2docker init
Continue with the [User Guide](/userguide/).
This creates a new virtual machine. You only need to run this command once.
2. Start the `boot2docker` VM.
$ boot2docker start
3. Display the environment variables for the Docker client.
$ boot2docker shellinit
Writing /Users/mary/.boot2docker/certs/boot2docker-vm/ca.pem
Writing /Users/mary/.boot2docker/certs/boot2docker-vm/cert.pem
Writing /Users/mary/.boot2docker/certs/boot2docker-vm/key.pem
export DOCKER_HOST=tcp://192.168.59.103:2376
export DOCKER_CERT_PATH=/Users/mary/.boot2docker/certs/boot2docker-vm
export DOCKER_TLS_VERIFY=1
The specific paths and address on your machine will be different.
4. To set the environment variables in your shell do the following:
$ $(boot2docker shellinit)
You can also set them manually by using the `export` commands `boot2docker`
returns.
5. Run the `hello-world` container to verify your setup.
$ docker hello-world
## Basic Boot2Docker Exercises
At this point, you should have `boot2docker` running and the `docker` client
environment initialized. To verify this, use the following commands:
$ boot2docker status
$ docker version
Work through this section to try some practical container tasks using `boot2docker` VM.
### Access container ports
1. Start an NGINX container on the DOCKER_HOST.
$ docker run -d -P --name web nginx
Normally, the `docker run` commands starts a container, runs it, and then
exits. The `-d` flag keeps the container running in the background
after the `docker` command exits. The `-P` flag publishes exposed ports from the
container to your local host; this lets you access them from your Mac.
2. Display your running container with `docker ps` command
CONTAINER ID IMAGE COMMAND CREATED STATUS PORTS NAMES
5fb65ff765e9 nginx:latest "nginx -g 'daemon of 3 minutes ago Up 3 minutes 0.0.0.0:49156->443/tcp, 0.0.0.0:49157->80/tcp web
At this point, you can see `nginx` is running as a daemon.
3. View just the container's ports.
$ docker port web
443/tcp -> 0.0.0.0:49156
80/tcp -> 0.0.0.0:49157
This tells you that the `web` container's port `80` is mapped to port
`49157` on your Docker host.
4. Enter the `https://localhost:49157` address (`localhost` is `0.0.0.0`) in your browser:
![Bad Address](/installation/images/bad_host.png)
This didn't work. The reason it doesn't work is your `DOCKER_HOST` address is
not the localhost address (0.0.0.0) but is instead the address of the
`boot2docker` VM.
5. Get the address of the `boot2docker` VM.
$ boot2docker ip
192.168.59.103
6. Enter the `https://192.168.59.103:49157` address in your browser:
![Correct Addressing](/installation/images/good_host.png)
Success!
7. To stop and then remove your running `nginx` container, do the following:
$ docker stop web
$ docker rm web
### Mount a volume on the container
When you start `boot2docker`, it automatically shares your `/Users` directory
with the VM. You can use this share to mount directories onto your container.
The next exercise demonstrates how to do this.
1. Change to your user `$HOME` directory.
$ cd $HOME
2. Make a new `site` directory.
$ mkdir site
3. Change into the `site` directory.
$ cd site
4. Create a new `index.html` file.
$ echo "my new site" > index.html
5. Start a new `nginx` container and replace the `html` folder with your `site` directory.
$ docker run -d -P -v /Users/mary/site:/usr/share/nginx/html --name mysite nginx
6. Get the `mysite` container's port.
$ docker port mysite
80/tcp -> 0.0.0.0:49166
443/tcp -> 0.0.0.0:49165
7. Open the site in a browser:
![My site page](/installation/images/newsite_view.png)
8. Try adding a page to your `$HOME/site` in real time.
$ echo "This is cool" > cool.html
9. Open the new page in the browser.
![Cool page](/installation/images/cool_view.png)
9. Stop and then remove your running `mysite` container.
$ docker stop mysite
$ docker rm mysite
## Upgrade Boot2Docker
If you running Boot2Docker 1.4.1 or greater, you can upgrade Boot2Docker from
the command line. If you are running an older version, you should use the
package provided by the `boot2docker` repository.
### From the command line
To upgrade from 1.4.1 or greater, you can do this:
1. Open a terminal on your local machine.
2. Stop the `boot2docker` application.
$ boot2docker stop
3. Run the upgrade command.
$ boot2docker upgrade
### Use the installer
To upgrade any version of Boot2Docker, do this:
1. Open a terminal on your local machine.
2. Stop the `boot2docker` application.
$ boot2docker stop
3. Go to the [boo2docker/osx-installer ](
https://github.com/boot2docker/osx-installer/releases/latest) release page.
4. Click the`Boot2Docker-x.x.x.pkg` link in the "Downloads" section.
Your browser downloads the package.
2. Install Boot2Docker by double-clicking the package.
The installer places a `Boot2Docker` app in your `Applications` folder.
## Learning more and Acknowledgement
Use `boot2docker help` to list the full command line reference. For more
information about using SSH or SCP to access the Boot2Docker VM, see the README
at [Boot2Docker repository](https://github.com/boot2docker/boot2docker).
Thanks to Chris Jones whose [blog](http://goo.gl/Be6cCk) inspired me to redo
this page.
Continue with the [Docker User Guide](/userguide/).
For further information or to report issues, please visit the [Boot2Docker site](http://boot2docker.io).