Hey Verdepollo,

Yes, NRPE is being used, and below are few details on the Nagios master server, do let me know if you need additional information.

[root@proof etc]# uname -a
Linux proof 2.6.18-274.el5 #1 SMP Fri Jul 22 04:43:29 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux
[root@proof etc]# cat /etc/redhat-release
CentOS release 5.7 (Final)


[root@proof etc]# ls -ltr /usr/local/nagios/etc/
total 116
-rw-rw---- 1 nagios nagios 1340 Jan 13 18:51 resource.cfg
-rw-rw-r-- 1 nagios nagios 43774 Jan 13 18:51 nagios.cfg.01.16.2012
-rw-rw-r-- 1 nagios nagios 11408 Jan 13 18:51 cgi.cfg
-rw-r--r-- 1 root root 26 Jan 16 09:53 htpasswd.users
-rw-rw-r-- 1 nagios nagios 43830 Jan 16 17:37 nagios.cfg
drwxrwxr-x 2 nagios nagios 4096 Jan 17 09:04 objects
-rw-rw-r-- 1 nagios nagios 2813 Jan 18 14:15 services.cfg


[root@proof etc]# cat services.cfg
# Generic service definition template
define service{
name generic-service ;
active_checks_enabled 1 ;
passive_checks_enabled 1 ;
parallelize_check 1 ;
obsess_over_service 1 ;
check_freshness 0 ;
notifications_enabled 1 ;
event_handler_enabled 1 ;
flap_detection_enabled 1 ;
process_perf_data 1 ;
retain_status_information 1 ;
retain_nonstatus_information 1 ;

register 0 ; DONT REGISTER TEMPLATE!
}

# Service definition
define service{
use generic-service ; Name of service template

hostgroup_name admins
service_description HTTP
is_volatile 0
check_period 24x7
max_check_attempts 3
normal_check_interval 3
retry_check_interval 1
contact_groups admins,
notification_interval 30
notification_period 24x7
notification_options w,u,c,r
check_command check_http
}

# Service definition
define service{
use generic-service ; Name of service template

hostgroup_name admins
service_description LocalDisk
is_volatile 0
check_period 24x7
max_check_attempts 3

normal_check_interval 3
retry_check_interval 1
contact_groups admins
notification_interval 30
notification_period 24x7
notification_options w,u,c,r
check_command check_local_disk
}

# Service definition
define service{
use generic-service ; Name of service template

hostgroup_name admins
service_description HTTP
is_volatile 0
check_period 24x7
max_check_attempts 3
normal_check_interval 3
retry_check_interval 1
contact_groups admins
notification_interval 30
notification_period 24x7
notification_options w,u,c,r
check_command check_http
}