Hello everybody.
I’m starting using icinga and i would like to know if is it possible to change the way that ncpa check disk works, normally is using percentage but I want to set the critical alarm when only has 1GB for example. Did Someone try something like this?
Thanks for your comments.

If you’re using the plugin check_disk, that’s no problem. Just specify warning/critical values as an integers without a % suffix.

 check_disk -w 100 -c 50 -C -w 1000 -c 500 -p /foo -C -w 5% -c 3% -p /bar
    Checks /foo for 1000M/500M and /bar for 5/3%. All remaining volumes use 100M/50M

You can change the unit with -u, --units= as you wish.