Working..!!!

Very Simple to use with NRPE. 🙂
###########################
Nagios Server Configuration:

define service{
use generic-service
host_name mail.example.local
service_description KERNEL Version
check_command check_nrpe!check_kernel
check_interval 1440
}
###########################
NRPE File Configuration:
vim /usr/local/nagios/etc/nrpe.cfg
command[check_kernel]=/usr/local/nagios/libexec/check_kernel
###########################

-Nishith N.Vyas