cgsnapshot − generate the configuration file for given controllers
cgsnapshot [-h] [-s] [-t] [-b file] [-w file] [-f output_file] [controller] [...]
cgsnapshot
generates the cgconfig compatible configuration file for the
given controllers. If no controller is set, then cgsnapshot
shows all mounted hierarchies. The output is in the same
format as the cgconfig.conf configuration file.
-b file
Display only variables from the denylist. The default location of the denylist is /etc/cgsnapshot_denylist.conf. This list contains all variables which should be ignored by the cgsnapshot If the variable is denylisted, it will not be displayed. If it is not present on the denylist, the allowlist is checked.
-h, --help
display this help and exit
-f, --file
Redirect the output to output_file
-s, --silent
Ignore all warnings
-t, --strict
Do not display the variables which are not on the allowlist
-w file
Set the denylist configuration file. This list contains all variables which should be displayed by cgsnapshot If the variable is not denylisted, the allowlist is checked. If the variable is on the allowlist, it is displayed by cgsnapshot If the variable is not on the allowlist, the variable is displayed and a warning message is produced. By default the allowlist is not used.
The warning message can be omitted using the -s, --silent flag. If the -t, --strict flag is used, the variable which is not on the allowlist is not displayed.
controller
defines the controller whose hierarchies will be output
CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.
/etc/cgsnapshot_denylist.conf
default denylist
/etc/cgsnapshot_allowlist.conf
default allowlist
/etc/cgconfig.conf
default libcgroup configuration file
cgsnapshot -s -f /etc/cgconfig.conf.cgsnapshot
create configuration file which contains all mounted controllers and all control groups which are on the actual system
cgsnapshot -s -f /etc/cgconfig.conf.cgsnapshot cpu
create configuration file which contains hierarchy containing cpu controller and all its control groups on the actual system
cgconfig.conf (5)