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Displaying results when the DNS FQDN is different from uname -n

list Adam Goryachev
Wed, 20 May 2020 11:24:29 +1000
Message-Id: <user-396220e7e317@xymon.invalid>

On 20/5/20 11:17, Stephen Carville (xymon list) wrote:
I have several new machines that do not display local information in XYMon. Part of that is the FQDN differs from the name returned by uname -n. For example apg-rdtx-nde-01.lereta.net thinks it is just plain apg-rdtx-nde-01.? I verified this by capturing the clientlog sent to the server.

I tried the obvious trick of putting a CLIENT: entry into host.cfg but to no avail. That works for a couple of other nodes where the name returned by uname -n is different than the DNS name we know them by so I am mystified as to why it won't work here

Example hosts.cfg entry:

10.1.224.187? apg-rdtx-nde-01.lereta.net? # ssh CLIENT:apg-rdtx-nde-01

As I said above, I captured the traffic from one of the clients and I can see that it is sending the information to XYMon. However, I cannot find where it is being stored if at all. Normally, I look in /var/xymon/data/hostdata/<servername> but it doesn't appear to be there.

Is there a way to make this work?
You might prefer to change this on the client. On Debian it is configured in /etc/default/xymon-client, other OS versions might vary.

Otherwise, you can also check the Ghost clients report to see what names are being sent which might provide some further clues.

Regards,
Adam