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ReStructuredText
98 lines
2.9 KiB
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:title: Installation on Gentoo Linux
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:description: Docker installation instructions and nuances for Gentoo Linux.
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:keywords: gentoo linux, virtualization, docker, documentation, installation
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.. _gentoo_linux:
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Gentoo Linux
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============
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.. include:: install_header.inc
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.. include:: install_unofficial.inc
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Installing Docker on Gentoo Linux can be accomplished using one of two methods.
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The first and best way if you're looking for a stable experience is to use the
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official `app-emulation/docker` package directly in the portage tree.
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If you're looking for a ``-bin`` ebuild, a live ebuild, or bleeding edge
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ebuild changes/fixes, the second installation method is to use the overlay
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provided at https://github.com/tianon/docker-overlay which can be added using
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``app-portage/layman``. The most accurate and up-to-date documentation for
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properly installing and using the overlay can be found in `the overlay README
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<https://github.com/tianon/docker-overlay/blob/master/README.md#using-this-overlay>`_.
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Installation
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^^^^^^^^^^^^
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The package should properly pull in all the necessary dependencies and prompt
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for all necessary kernel options. For the most straightforward installation
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experience, use ``sys-kernel/aufs-sources`` as your kernel sources. If you
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prefer not to use ``sys-kernel/aufs-sources``, the portage tree also contains
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``sys-fs/aufs3``, which includes the patches necessary for adding AUFS support
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to other kernel source packages such as ``sys-kernel/gentoo-sources`` (and a
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``kernel-patch`` USE flag to perform the patching to ``/usr/src/linux``
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automatically).
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.. code-block:: bash
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sudo emerge -av app-emulation/docker
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If any issues arise from this ebuild or the resulting binary, including and
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especially missing kernel configuration flags and/or dependencies, `open an
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issue on the docker-overlay repository
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<https://github.com/tianon/docker-overlay/issues>`_ or ping tianon directly in
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the #docker IRC channel on the freenode network.
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Starting Docker
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^^^^^^^^^^^^^^^
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Ensure that you are running a kernel that includes the necessary AUFS
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patches/support and includes all the necessary modules and/or configuration for
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LXC.
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OpenRC
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------
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To start the docker daemon:
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.. code-block:: bash
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sudo /etc/init.d/docker start
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To start on system boot:
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.. code-block:: bash
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sudo rc-update add docker default
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systemd
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-------
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To start the docker daemon:
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.. code-block:: bash
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sudo systemctl start docker.service
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To start on system boot:
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.. code-block:: bash
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sudo systemctl enable docker.service
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Network Configuration
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^^^^^^^^^^^^^^^^^^^^^
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IPv4 packet forwarding is disabled by default, so internet access from inside
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the container will not work unless ``net.ipv4.ip_forward`` is enabled:
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.. code-block:: bash
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sudo sysctl -w net.ipv4.ip_forward=1
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Or, to enable it more permanently:
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.. code-block:: bash
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echo net.ipv4.ip_forward = 1 | sudo tee /etc/sysctl.d/docker.conf
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