Thank you tmcdonald, I thought it might be a missing snmp package so I did some spelunking (using the history command) and found that I hadn't installed net-snmp-devel. I installed that package but check_snmp still didn't show up. I did some more Googling and saw that some plugins won't install without certain pre-existing programs so I reinstalled the plugins too and now all of my snmp checks are green.
Thanks again,
Joe B
[Solved] Service has no hosts and/or service_description
Re: [Solved] Service has no hosts and/or service_descriptio
Glad to see it's all working now. I'm going to close up this thread, but feel free to open another if you need anything in the future.
Former Nagios employee