Fork of Mark Ruys' check_glusterfs from http://exchange.nagios.org/directory/Plugins/System-Metrics/File-System/GlusterFS-checks/details
Hint: If you receive the error message that utils.sh is missing, you should check if the script is existing on your system and in the same folder as the check.
On Debian 7, the command ln -s /usr/lib/nagios/plugins/utils.sh utils.sh will help.
An alternative would be to edit the check and adapt the line ". $PROGPATH/utils.sh" according to your needs.
The check requires the tool "bc" to be installed. On Debian, "apt-get install bc" will do the trick.