lxc-attach man page on SuSE

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LXC-ATTACH(1)							 LXC-ATTACH(1)

NAME
       lxc-attach - start a process inside a running container.

SYNOPSIS
       lxc-attach -n name [ -a arch ] [ -e ] [ -- command ]

DESCRIPTION
       lxc-attach runs the specified command inside the container specified by
       name. The container has to be running already.

       If no command is specified, the current default shell of the user  run‐
       ning  lxc-attach	 will  be looked up inside the container and executed.
       This will fail if no such user exists inside the container or the  con‐
       tainer does not have a working nsswitch mechanism.

OPTIONS
	  -a, --arch arch
	      Specify  the  architecture  which the kernel should appear to be
	      running as to the command executed. This option will accept  the
	      same  settings as the lxc.arch option in container configuration
	      files, see lxc.conf(5). By default, the current archictecture of
	      the running container will be used.

	  -e, --elevated-privileges
	      Do  not  drop  privileges	 when  running command inside the con‐
	      tainer. If this option is specified, the new process will not be
	      added  to	 the  container's  cgroup(s)  and it will not drop its
	      capabilities before executing.

	      Warning: This may leak privileges into the container if the com‐
	      mand  starts  subprocesses  that	remain	active	after the main
	      process that was attached is terminated.	The  (re-)starting  of
	      daemons  inside  the container is problematic, especially if the
	      daemon starts a lot of subprocesses such as cron or  sshd.   Use
	      with great care.

COMMON OPTIONS
       These options are common to most of lxc commands.

       -?, -h, --help
	      Print a longer usage message than normal.

       --usage
	      Give the usage message

       -q, --quiet
	      mute on

       -o, --logfile=FILE
	      Output to an alternate log FILE. The default is no log.

       -l, --logpriority=LEVEL
	      Set  log	priority  to LEVEL. The default log priority is ERROR.
	      Possible values are : FATAL, CRIT, WARN,	ERROR,	NOTICE,	 INFO,
	      DEBUG.

	      Note  that this option is setting the priority of the events log
	      in the alternate log file. It do not have effect	on  the	 ERROR
	      events log on stderr.

       -n, --name=NAME
	      Use  container identifier NAME.  The container identifier format
	      is an alphanumeric string.

EXAMPLES
       To spawn a new shell running inside an existing container, use

		 lxc-attach -n container

       To restart the cron service of a running Debian container, use

		 lxc-attach -n container -- /etc/init.d/cron restart

       To deactivate the network link eth1 of a running	 container  that  does
       not  have  the NET_ADMIN capability, use the -e option to use increased
       capabilities:

		 lxc-attach -n container -e -- /sbin/ip link delete eth1

SECURITY
       The -e should be used with care, as it may break the isolation  of  the
       containers if used improperly.

SEE ALSO
       lxc(1),	lxc-create(1), lxc-destroy(1), lxc-start(1), lxc-stop(1), lxc-
       execute(1), lxc-kill(1), lxc-console(1),	 lxc-monitor(1),  lxc-wait(1),
       lxc-cgroup(1),  lxc-ls(1),  lxc-ps(1), lxc-info(1), lxc-freeze(1), lxc-
       unfreeze(1), lxc-attach(1), lxc.conf(5)

AUTHOR
       Daniel Lezcano <daniel.lezcano@free.fr>

				  24 May 2013			 LXC-ATTACH(1)
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