Works as expected in CentOS 5

I reviewed this scripts code and tested on several sandbox servers. I then implemented it on multiple CentOS 5.x environments with no problems. This plugin is definitely helpful with quickly pinpointing servers that haven’t been patched.

Additionally, I have it only checking every 24 hours, and have alerting turned off except business hours.
Here is our service definition:
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define service{
use generic-service
host_name hosta,hostb,hostc
max_check_attempts 3
normal_check_interval 1440
retry_check_interval 120
notification_interval 1440
notification_period workhours
service_description Check_Linux_Updates
check_command check_nrpe!check_yum
}