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Colin 't Hart
Asked: 2022-03-03 11:37:18 +0800 CST

Naemon still sending DOWN notifications for removed host

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I shutdown an old web server, and immediately started receiving DOWN notifications from Naemon.

Now I have removed that host entirely from the Naemon config, and restarted the Naemon service. Yet I continue to receive DOWN notifications every hour.

How do I stop these?

The whole Naemon configuration is almost 2000 lines, so much too long to include here; the virtually default naemon.cfg is over 1000 lines itself.

Is there some parameter(s) causing a host to be saved in some cache? I can find the host listed in /var/lib/naemon/status.dat

nagios ubuntu-16.04 notification

1 Answers

  1. Best Answer

    This thread and post solved the problem for me:

    https://support.nagios.com/forum/viewtopic.php?f=7&t=32630&sid=7cd3fc62673fec6539b082de7c1bb7c5&start=10#p136526

    There is no "hidden cache" or parameter for it; the config 100% defines which hosts/services are checked.

    The problem was that Naemon wasn't shutting down properly for some unknown reason. I had been using systemctl restart naemon -- and even systemctl stop naemon followed by systemctl start naemon across all of our Naemon nodes.

    But just now when I checked with ps -ef | grep naemon after shutting down Naemon I saw that there were still process running. I killed them with kill -9 <parent pid>, and started Naemon again. No more DOWN notifications!

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