Great Plugin.

Just One small correction , the pnp4nagios has an error with name of the fields :

$def[1] = “DEF:used=$rrdfile:$DS[1]:AVERAGE ” ;
$def[1] .= “DEF:nice=$rrdfile:$DS[2]:AVERAGE ” ;
$def[1] .= “DEF:sys=$rrdfile:$DS[3]:AVERAGE ” ;
$def[1] .= “DEF:softirq=$rrdfile:$DS[4]:AVERAGE ” ;
$def[1] .= “DEF:iowait=$rrdfile:$DS[5]:AVERAGE ” ;
$def[1] .= “DEF:irq=$rrdfile:$DS[6]:AVERAGE ” ;
$def[1] .= “DEF:idle=$rrdfile:$DS[7]:AVERAGE ” ;

Regards,Diego