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<!--

lxc: linux Container library

(C) Copyright IBM Corp. 2007, 2008

Authors:
Daniel Lezcano <daniel.lezcano at free.fr>

This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.

This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
Lesser General Public License for more details.

You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA

-->

<!DOCTYPE refentry PUBLIC @docdtd@ [

<!ENTITY commonoptions SYSTEM "@builddir@/common_options.sgml">
<!ENTITY seealso SYSTEM "@builddir@/see_also.sgml">
]>

<refentry>

  <docinfo><date>@LXC_GENERATE_DATE@</date></docinfo>

  <refmeta>
    <refentrytitle>lxc-start</refentrytitle>
    <manvolnum>1</manvolnum>
  </refmeta>

  <refnamediv>
    <refname>lxc-start</refname>

    <refpurpose>
      run an application inside a container.
    </refpurpose>
  </refnamediv>

  <refsynopsisdiv>
    <cmdsynopsis>
      <command>lxc-start</command>
      <arg choice="req">-n <replaceable>name</replaceable></arg>
      <arg choice="opt">-f <replaceable>config_file</replaceable></arg>
      <arg choice="opt">-c <replaceable>console_device</replaceable></arg>
      <arg choice="opt">-L <replaceable>console_logfile</replaceable></arg>
      <arg choice="opt">-d</arg>
      <arg choice="opt">-F</arg>
      <arg choice="opt">-p <replaceable>pid_file</replaceable></arg>
      <arg choice="opt">-s KEY=VAL</arg>
      <arg choice="opt">-C</arg>
      <arg choice="opt">--share-[net|ipc|uts] <replaceable>name|pid</replaceable></arg>
      <arg choice="opt">command</arg>
    </cmdsynopsis>
  </refsynopsisdiv>

  <refsect1>
    <title>Description</title>

    <para>
      <command>lxc-start</command> runs the specified
      <replaceable>command</replaceable> inside the container
      specified by <replaceable>name</replaceable>.
    </para>
    <para>
      It will setup the container
      according to the configuration previously defined with the
      lxc-create command or with the configuration file parameter.
      If no configuration is
      defined, the default isolation is used.
    </para>
    <para>
      If no command is specified, <command>lxc-start</command> will
      use the default
      <command>"/sbin/init"</command> command to run a system
      container.
    </para>

  </refsect1>

  <refsect1>

    <title>Options</title>

    <variablelist>

      <varlistentry>
	<term>
	  <option>-d, --daemon</option>
	</term>
	<listitem>
	  <para>
	    Run the container as a daemon. As the container has no
	    more tty, if an error occurs nothing will be displayed,
	    the log file can be used to check the error.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-F, --foreground</option>
	</term>
	<listitem>
	  <para>
	    Run the container in the foreground. In this mode, the container
	    console will be attached to the current tty and signals will be routed
	    directly to the container. (This is the default mode)
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-p, --pidfile <replaceable>pid_file</replaceable></option>
	</term>
	<listitem>
	  <para>
	    Create a file with the process id.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-f, --rcfile <replaceable>config_file</replaceable></option>
	</term>
	<listitem>
	  <para>
	    Specify the configuration file to configure the virtualization
	    and isolation functionalities for the container.
	  </para>
	  <para>
	   This configuration file if present will be used even if there is
	   already a configuration file present in the previously created
	   container (via lxc-create).
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-c,
	  --console <replaceable>console_device</replaceable></option>
	</term>
	<listitem>
	  <para>
	    Specify a device to use for the container's console, for example
            /dev/tty8. If this option is not specified the current terminal
            will be used unless <option>-d</option> is specified.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-L,
	  --console-log <replaceable>console_logfile</replaceable></option>
	</term>
	<listitem>
	  <para>
	    Specify a file to log the container's console output to.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-s, --define <replaceable>KEY=VAL</replaceable></option>
	</term>
	<listitem>
	  <para>
	    Assign value <replaceable>VAL</replaceable> to configuration
	    variable <replaceable>KEY</replaceable>. This overrides any
	    assignment done in <replaceable>config_file</replaceable>.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>-C,
	  --close-all-fds</option>
	</term>
	<listitem>
	  <para>
	  If any file descriptors are inherited, close them.  If this option
	  is not specified, then <command>lxc-start</command> will exit with
	  failure instead. Note: <replaceable>--daemon</replaceable> implies
	  <replaceable>--close-all-fds</replaceable>.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>--share-net <replaceable>name|pid</replaceable></option>
	</term>
	<listitem>
	  <para>
            Inherit a network namespace from
	    a <replaceable>name</replaceable> container or
	    a <replaceable>pid</replaceable>. The network namespace
	    will continue to be managed by the original owner. The
	    network configuration of the starting container is ignored
	    and the up/down scripts won't be executed.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>--share-ipc <replaceable>name|pid</replaceable></option>
	</term>
	<listitem>
	  <para>
            Inherit an IPC namespace from
	    a <replaceable>name</replaceable> container or
	    a <replaceable>pid</replaceable>.
	  </para>
	</listitem>
      </varlistentry>

      <varlistentry>
	<term>
	  <option>--share-uts <replaceable>name|pid</replaceable></option>
	</term>
	<listitem>
	  <para>
            Inherit a UTS namespace from
	    a <replaceable>name</replaceable> container or
	    a <replaceable>pid</replaceable>. The starting LXC will
	    not set the hostname, but the container OS may do it
	    anyway.
	  </para>
	</listitem>
      </varlistentry>

    </variablelist>

  </refsect1>

  &commonoptions;

  <refsect1>
    <title>Diagnostic</title>

    <variablelist>

      <varlistentry>
        <term>The container is busy</term>
        <listitem>
          <para>
	    The specified container is already running an
	    application. You should stop it before reuse this
	    container or create a new one.
          </para>
        </listitem>
      </varlistentry>

    </variablelist>

  </refsect1>

  &seealso;

  <refsect1>
    <title>Author</title>
    <para>Daniel Lezcano <email>daniel.lezcano@free.fr</email></para>
  </refsect1>

</refentry>

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