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Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@docker.com> (github: SvenDowideit)
93 lines
3.3 KiB
Markdown
93 lines
3.3 KiB
Markdown
page_title: Installation from Binaries
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page_description: Instructions for installing Docker as a binary. Mostly meant for hackers who want to try out Docker on a variety of environments.
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page_keywords: binaries, installation, docker, documentation, linux
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# Binaries
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**This instruction set is meant for hackers who want to try out Docker
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on a variety of environments.**
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Before following these directions, you should really check if a packaged
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version of Docker is already available for your distribution. We have
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packages for many distributions, and more keep showing up all the time!
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## Check runtime dependencies
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To run properly, docker needs the following software to be installed at
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runtime:
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- iptables version 1.4 or later
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- Git version 1.7 or later
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- procps (or similar provider of a "ps" executable)
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- XZ Utils 4.9 or later
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- a [properly mounted](
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https://github.com/tianon/cgroupfs-mount/blob/master/cgroupfs-mount)
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cgroupfs hierarchy (having a single, all-encompassing "cgroup" mount
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point [is](https://github.com/dotcloud/docker/issues/2683)
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[not](https://github.com/dotcloud/docker/issues/3485)
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[sufficient](https://github.com/dotcloud/docker/issues/4568))
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## Check kernel dependencies
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Docker in daemon mode has specific kernel requirements. For details,
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check your distribution in [*Installation*](../#installation-list).
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In general, a 3.8 Linux kernel (or higher) is preferred, as some of the
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prior versions have known issues that are triggered by Docker.
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Note that Docker also has a client mode, which can run on virtually any
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Linux kernel (it even builds on OS X!).
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## Get the docker binary:
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$ wget https://get.docker.io/builds/Linux/x86_64/docker-latest -O docker
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$ chmod +x docker
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> **Note**:
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> If you have trouble downloading the binary, you can also get the smaller
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> compressed release file:
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> [https://get.docker.io/builds/Linux/x86_64/docker-latest.tgz](
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> https://get.docker.io/builds/Linux/x86_64/docker-latest.tgz)
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## Run the docker daemon
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# start the docker in daemon mode from the directory you unpacked
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$ sudo ./docker -d &
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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.
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> **Warning**:
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> The *docker* group (or the group specified with `-G`) is root-equivalent;
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> see [*Docker Daemon Attack Surface*](
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> /articles/security/#dockersecurity-daemon) details.
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## Upgrades
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To upgrade your manual installation of Docker, first kill the docker
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daemon:
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$ killall docker
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Then follow the regular installation steps.
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## Run your first container!
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# check your docker version
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$ sudo ./docker version
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# run a container and open an interactive shell in the container
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$ sudo ./docker run -i -t ubuntu /bin/bash
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Continue with the [User Guide](/userguide/).
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