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lxc.conf.sgml.in: note the arguments and environment variables passed to hooks

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Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>
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Serge Hallyn 2013-08-13 13:45:56 -05:00
parent 8bb17b7791
commit baece28226
1 changed files with 21 additions and 0 deletions
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doc/lxc.conf.sgml.in
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@ -861,6 +861,27 @@ Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
Container hooks are programs or scripts which can be executed
at various times in a container's lifetime.
</para>
<para>
When a container hook is executed, information is passed both
as command line arguments and through environment variables.
The arguments are:
<itemizedlist>
<listitem> Container name. </listitem>
<listitem> Section (always 'lxc'). </listitem>
<listitem> The hook type (i.e. 'clone' or 'pre-mount'). </listitem>
<listitem> Additional arguments In the
case of the clone hook, any extra arguments passed to
lxc-clone will appear as further arguments to the hook. </listitem>
</itemizedlist>
The following environment variables are set:
<itemizedlist>
<listitem> LXC_NAME: is the container's name. </listitem>
<listitem> LXC_ROOTFS_MOUNT: the path to the mounted root filesystem. </listitem>
<listitem> LXC_CONFIG_FILE: the path to the container configuration file. </listitem>
<listitem> LXC_SRC_NAME: in the case of the clone hook, this is the original container's name. </listitem>
<listitem> LXC_ROOTFS_PATH: this is the lxc.rootfs enty for the container. Note this is likely not where the mounted rootfs is to be found, use LXC_ROOTFS_MOUNT for that. </listitem>
</itemizedlist>
</para>
<para>
Standard output from the hooks is logged at debug level.
Standard error is not logged, but can be captured by the