define hostgroup {
        hostgroup_name  		ntp-servers
        alias           		NTP Servers
        register			0
}

define hostgroup {
        hostgroup_name  		time-servers
        alias           		TIME Servers
        register			0
}


define service {
        use				ping-service
        hostgroup_name                  ntp-servers
        service_description             NTP
	check_command			check_ntp!1!3
}

define service {
        use                             ping-service
        hostgroup_name                  time-servers
        service_description             TIME
	check_command			check_ntp_win!1!3
}