[Xymon] Frequent purple alerts

[Jaime Kikpole]

Sorry to resurrect this old thread, but I finally was able to grab the logs
from the Xymon client during a purple alert.  Usually, it would go back to
green before I would notice, could switch gears, and began working on it.

Thanks, Timoth Williams, for pointing out the file uploading parts of the
logs.  Based on that, I found these lines in the xymonclient.log file:
2019-07-31 15:25:38  Connecting to host 163.153.163.90
2019-07-31 15:25:59  ERROR: Cannot connect to host monitor1.cairodurham.org
(163.153.163.90) : System.Management.Automation.MethodInvocationException:
Exception calling "Connect" with "2" argument(s): "A connection attempt
failed because the connected party did not properly respond after a period
of time, or established connection failed because connected host has failed
to respond 163.153.163.90:1984" ---> System.Net.Sockets.SocketException: A
connection attempt failed because the connected party did not properly
respond after a period of time, or established connection failed because
connected host has failed to respond 163.153.163.90:1984

It looks like it was somehow resolving the FQDN (monitor1.cairodurham.org)
to its external IP address instead of its internal IP address.  I'm not
sure why.  I just checked the DNS settings and they're the same as another
Windows 2012R2 server that isn't having this issue.

I changed the FQDN to the internal IP address and restarted the service.
Everything went green almost immediately.

Any idea how it could resolve to the public IP address 2 - 4 each day but
only for a few hours total each day?




Jaime Kikpole

Director of Technology & Innovations
Cairo-Durham Central School District
(518) 622-8543, x59500
cairodurham.org <http://www.cairodurham.org>

Technical Support:
help at cairodurham.org
go.cairodurham.org/techtips

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