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please, for the love of Docker, do. not. use. symlinks 

Docker-DCO-1.1-Signed-off-by: Sven Dowideit <SvenDowideit@fosiki.com> (github: SvenDowideit)
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Sven Dowideit 2014-02-07 15:21:33 +10:00 committed by Tibor Vass
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7
docs/sources/reference/commandline/cli.rst
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@ -102,12 +102,17 @@ the ``-H`` flag for the client.
docker ps docker ps
# both are equal # both are equal
To run the daemon with `systemd socket activation <http://0pointer.de/blog/projects/socket-activation.html>`_, use ``docker -d -H fd://``. To run the daemon with `systemd socket activation <http://0pointer.de/blog/projects/socket-activation.html>`_, use ``docker -d -H fd://``.
Using ``fd://`` will work perfectly for most setups but you can also specify individual sockets too ``docker -d -H fd://3``. Using ``fd://`` will work perfectly for most setups but you can also specify individual sockets too ``docker -d -H fd://3``.
If the specified socket activated files aren't found then docker will exit. If the specified socket activated files aren't found then docker will exit.
You can find examples of using systemd socket activation with docker and systemd in the `docker source tree <https://github.com/dotcloud/docker/blob/master/contrib/init/systemd/socket-activation/>`_. You can find examples of using systemd socket activation with docker and systemd in the `docker source tree <https://github.com/dotcloud/docker/blob/master/contrib/init/systemd/socket-activation/>`_.
.. warning::
Docker and LXC do not support the use of softlinks for either the Docker data directory (``/var/lib/docker``) or for ``/tmp``.
If your system is likely to be set up in that way, you can use ``readlink -f`` to canonicalise the links:
``TMPDIR=$(readlink -f /tmp) /usr/local/bin/docker -d -D -g $(readlink -f /var/lib/docker) -H unix:// $EXPOSE_ALL > /var/lib/boot2docker/docker.log 2>&1``
.. _cli_attach: .. _cli_attach:
``attach`` ``attach``