This problem happens randomly after the agent restarts, with any plugin. For example, it can trigger a false warning about two processes being present, while only one is. When this happens, I notice parasitic characters in the output, as in the example below:
What is the problem you're trying to resolve? What are the symptoms?
Since the word parasitic is meaningless in this context, I'll guess you mean the strange character in the perfdata output.
If restarting the agent resolves the issue maybe share what agent you use.
Sorry if I grumped about the parasitic bit.
If you have a link to earlier issues feel free to share it.
Again, what problem does this create? I've never seen is so maybe it exists but I, and many others don't know about it.
Are you installing nrpe via an rpm or compiling? The nagios folks seem to prefer a manual install. I have no idea if one is better. I always install via a compile.
It's a bit of a confusing problem and I've never noticed it (maybe I need to). I'm also not sure how to localize it to a service and it seems to be nrpe. Grr.
The problem it creates is an unknown status for all checks which rely on this agent.
We use the the binary RPM supplied by RedHat. If nobody ever had this strange behavior it may be caused by a particular configuration we have. And it may be a ton of things then…
If I have the “luck” it happens again on the servers on which I set the NRPE agent on debug mode, and if I have any clue, I’ll you know.
I’ll probably propose the following workaround to my manager : systematically do a restart of the agent a few seconds after the os rebooted. Or maybe we will deploy a more version (compiled), but it’s a lot of work, and the fact that the bug happens randomly and rarely makes the validation of the solution difficult, if not impossible.