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cgrules.conf

CGRULES.CONF(5) 						 libcgroup Manual						   CGRULES.CONF(5)

NAME

       cgrules.conf - libcgroup configuration file

DESCRIPTION

       cgrules.conf configuration file is used by libcgroups to define control groups to which a process belongs.

       The file contains a list of rules which assign to a defined group/user a control group in a subsystem (or control groups in subsystems).

       Rules have two formats:

	   <user>		    <controllers>	<destination>
	   <user>:<process name>    <controllers>	<destination>

       Where:

       user can be:
	   - a user name
	   - a group name with @group syntax
	   - the wildcard '*', for any user or group
	   - '%', which is equivalent to "ditto" (useful for
	     multi-line rules where different cgroups need to be
	     specified for various hierarchies for a single user)

       process name is optional and it can be:
	   - a process name
	   - a full command path of a process

       controllers can be:
	   - comma separated controller names (no spaces) or
	   - * (for all mounted controllers)

       destination can be:
	   - path relative to the controller hierarchy (ex. pgrp1/gid1/uid1)
	   - following strings will get expanded

		 %u	username, uid if name resolving fails
		 %U	uid
		 %g	group name, gid if name resolving fails
		 %G	gid
		 %p	process name, pid if name not available
		 %P	pid

		 '' can be used to escape '%'

       First rule which matches the criteria will be executed.

       Any text starting with '#' is considered as a start of comment line and is ignored.

EXAMPLES

       student	       devices	       /usergroup/students
       Student's processes in the 'devices' subsystem belong to the control group /usergroup/students.

       student:cp	devices 	/usergroup/students/cp
       When student executes 'cp' command, the processes in the 'devices' subsystem belong to the control group /usergroup/students/cp.

       @admin		*	       admingroup/
       Processes started by anybody from admin group no matter in what subsystem belong to the control group admingroup/.

       peter	       cpu	       test1/
       %	       memory	       test2/
       The first line says Peter's task for cpu controller belongs to test1 control group. The second one says Peter's tasks for memory controller
       belong to test2/ control group.

       *	       *	       default/
       All processes in any subsystem belong to the control group default/. Since the earliest matched rule is applied, it  makes  sense  to  have
       this line at the end of the list. It will put a task which was not mentioned in the previous rules to default/ control group.

FILES

       /etc/cgrules.conf
       default libcgroup configuration file

SEE ALSO

       cgconfig.conf (5), cgclassify (1), cgred.conf (5)

BUGS

Linux								    2009-03-10							   CGRULES.CONF(5)

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