cgsnapshot - generate the configuration file for given controllers
Contents
Description
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.
-bfile
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
-wfile
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
Environment Variables
CGROUP_LOGLEVEL
controls verbosity of the tool. Allowed values are DEBUG, INFO, WARNING or ERROR.
Examples
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.cgsnapshotcpu
create configuration file which contains hierarchy containing cpu controller and all its control
groups on the actual system
Files
/etc/cgsnapshot_denylist.conf
default denylist
/etc/cgsnapshot_allowlist.conf
default allowlist
/etc/cgconfig.conf
default libcgroup configuration file
Name
cgsnapshot - generate the configuration file for given controllers
See Also
cgconfig.conf (5)
Linux 2010-07-28 CGSNAPSHOT(1)
Synopsis
cgsnapshot [-h] [-s] [-t] [-bfile] [-wfile] [-foutput_file] [controller] [...]
