NAME¶

cgexec - run the task in given control groups

SYNOPSIS¶

cgexec [-h] [-b] [-g <controllers>:<path>] [--sticky] command [arguments]

DESCRIPTION¶

The cgexec program executes the task command with arguments arguments in the given control groups.

-b

ignores the default systemd delegated hierarchy path and constructs the path of the control groups relative to the cgroup root hierarchy.

-g <controllers>:<path>

defines the control groups in which the task will be run. controllers is a list of controllers and path is the relative path to control groups in the given controllers list.

This flag can be used multiple times to define multiple pairs of lists of controllers and relative paths. Instead of the list of all mounted controllers, the wildcard b"*b" can be used.

If this option is not used, cgexec will automatically place the task in the right cgroup based on /etc/cgrules.conf.

If /etc/cgrules.conf configuration file is used, there can be used template names. Then the control group name contains a template in destination tag (see cgrules.conf (5)) and if the cgroup does not exist in execution time, it is created, based on /etc/cgconfig.conf specification. If the specifications are not present the group is created with the default kernel values.

-h, --help

Display this help and exit.

-r

Replaces systemd scope's idle process with the task command.

--sticky

If running the task command with this option, the daemon of service cgred (cgrulesengd process) does not change both the task of the command and the child tasks. Without this option, the daemon does not change the task of the command but it changes the child tasks to the right cgroup based on /etc/cgrules.conf automatically.

EXAMPLES¶

cgexec -g *:test1 ls

runs command ls in control group test1 in all mounted controllers.

cgexec -g cpu,memory:test1 ls -l

cgexec -g cpu,memory:test1 -g swap:test2 ls -l

ENVIRONMENT VARIABLES¶

CGROUP_LOGLEVEL

controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.

FILES¶

/etc/cgrules.conf

default libcgroup configuration file

SEE ALSO¶

cgrules.conf (5)