Check_multiaddr.pl returns "No output returned from plugin"

[ctfeathers]

Hey all running into this issue and wondering if anyone has had this issue before.

Some background, we have 5 mysql hosts we want to poll for some data to check if a feed is in Critical, Warning, OK, or Unknown (can't connect to the db).

We are using the check_multiaddr NRPE command with a python script that will only return OK if the feed passes through the warning and critical without issues, otherwise it'll return Unknown for any other error.

We have 1000+ services set up this way, occasionally 6-7 services a day will flip from CRITICAL to OK with the output "No output returned from plugin". Then the next check, it'll flip back to CRITICAL.

We just switched from using 1db host to 5 so the service is fault tolerant.

Any idea what might be going on?