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105 lines
3.5 KiB
Markdown
105 lines
3.5 KiB
Markdown
page_title: Installation on Debian
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page_description: Instructions for installing Docker on Debian.
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page_keywords: Docker, Docker documentation, installation, debian
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# Debian
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Docker is supported on the following versions of Debian:
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- [*Debian 8.0 Jessie (64-bit)*](#debian-jessie-80-64-bit)
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- [*Debian 7.7 Wheezy (64-bit)*](#debian-wheezystable-7x-64-bit)
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## Debian Jessie 8.0 (64-bit)
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Debian 8 comes with a 3.14.0 Linux kernel, and a `docker.io` package which
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installs all its prerequisites from Debian's repository.
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> **Note**:
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> Debian contains a much older KDE3/GNOME2 package called ``docker``, so the
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> package and the executable are called ``docker.io``.
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### Installation
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To install the latest Debian package (may not be the latest Docker release):
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$ sudo apt-get update
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$ sudo apt-get install docker.io
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To verify that everything has worked as expected:
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$ sudo docker run -i -t ubuntu /bin/bash
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Which should download the `ubuntu` image, and then start `bash` in a container.
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> **Note**:
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> If you want to enable memory and swap accounting see
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> [this](/installation/ubuntulinux/#memory-and-swap-accounting).
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## Debian Wheezy/Stable 7.x (64-bit)
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Docker requires Kernel 3.8+, while Wheezy ships with Kernel 3.2 (for more details
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on why 3.8 is required, see discussion on
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[bug #407](https://github.com/docker/docker/issues/407%20kernel%20versions)).
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Fortunately, wheezy-backports currently has [Kernel 3.16
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](https://packages.debian.org/search?suite=wheezy-backports§ion=all&arch=any&searchon=names&keywords=linux-image-amd64),
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which is officially supported by Docker.
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### Installation
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1. Install Kernel from wheezy-backports
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Add the following line to your `/etc/apt/sources.list`
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`deb http://http.debian.net/debian wheezy-backports main`
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then install the `linux-image-amd64` package (note the use of
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`-t wheezy-backports`)
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$ sudo apt-get update
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$ sudo apt-get install -t wheezy-backports linux-image-amd64
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2. Restart your system. This is necessary for Debian to use your new kernel.
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3. Install Docker using the get.docker.com script:
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`curl -sSL https://get.docker.com/ | sh`
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## Giving non-root access
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The `docker` daemon always runs as the `root` user and the `docker`
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daemon binds to a Unix socket instead of a TCP port. By default that
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Unix socket is owned by the user `root`, and so, by default, you can
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access it with `sudo`.
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If you (or your Docker installer) create a Unix group called `docker`
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and add users to it, then the `docker` daemon will make the ownership of
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the Unix socket read/writable by the `docker` group when the daemon
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starts. The `docker` daemon must always run as the root user, but if you
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run the `docker` client as a user in the `docker` group then you don't
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need to add `sudo` to all the client commands. From Docker 0.9.0 you can
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use the `-G` flag to specify an alternative group.
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> **Warning**:
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> The `docker` group (or the group specified with the `-G` flag) is
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> `root`-equivalent; see [*Docker Daemon Attack Surface*](
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> /articles/security/#docker-daemon-attack-surface) details.
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**Example:**
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# Add the docker group if it doesn't already exist.
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$ sudo groupadd docker
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# Add the connected user "${USER}" to the docker group.
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# Change the user name to match your preferred user.
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# You may have to logout and log back in again for
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# this to take effect.
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$ sudo gpasswd -a ${USER} docker
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# Restart the Docker daemon.
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$ sudo service docker restart
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## What next?
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Continue with the [User Guide](/userguide/).
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