Contributed by jason on from the dont-forget-your-business-monitors-too dept.
The Nagios Exchange recently added check_relayd, a new check which monitors an OpenBSD relayd(8) service for health and availability. It was written by Philip Garner of Sysnix and published on the Exchange just a couple days ago. From the description:
Comprehensive perl relayd checker. This plugin is designed to run on a local host if Nagios is not local I suggest you run it via NRPE. However if you are running this on a firewall I would strongly [recommend] not using NRPE and run a local Nagios [using] OCSP/OCHP to passive messages back to your main Nagios. Usage: Check_relayd checks that all redirect & relays loaded by relayd are active. If a redirect/relay or table are down/empty it will give a CRITICAL message with information regarding what has failed. If host(s) are down in a given redirect/relay then it will give a WARNING unless there are 0 up for that relay/redirect in which case it will give a CRITICAL. If relayd returns any unexpected output (command failure, system errors) this program will return a CRITICAL. check_relayd -h, -?, --help Print Help Information -V, --version Print Version Information -r, --relay, --redirect Optional -r argument you can give a list of the expected relays/redirect separated by commas (,). If it does not find the relay/redirect returns CRITICAL. If a relay/redirect fond that is not defined returns WARNING. If you need any support or help with this plugin or if you find any cool ways of improving it please let me know.
Editor's Note: Reviewing the check's source code, it does a basic inspection on the output of relayctl show summary, looking for active status on redirection or relay entries. There is no performance data passed back in the output, so users looking for trending data should continue to use an alternative graphing utility.
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