[Xymon] what IS the "DNS" check in xymon?

[John Thurston]

'tis in the man page for hosts.cfg, but I'll paste it here for ready 
reference:

*dns*
     Simple DNS test. It will attempt to lookup the A record for the 
hostname of the DNS server.


Which means the test performed by xymonnet is attempting to look up an 
A-record for the name "walkie" and failing. It is doing something like:

    dig +short +notcp A walkie @10.24.38.132

Either change your hostname to a fully-qualified domain name (FQDN) 
(e.g. walkie.foo.bar.com), or change your DNS test to use the long-form:

*dns=TYPE:lookup[,TYPE:lookup...]*
     The default DNS tests will attempt a DNS lookup of the DNS' servers 
own hostname. You can specify the hostname to lookup on a DNS server by 
listing it on each test.

That would make the right side of your line look like:
    dns=A:walkie.foo.bar.com

--
Do things because you should, not just because you can.

John Thurston    907-465-8591
John.Thurston at alaska.gov
Department of Administration
State of Alaska

On 2/14/2022 11:38 PM, Ian Diddams via Xymon wrote:
> 
> if we set a hosts.cfg line
> 
> 10.24.38.132    walkie # ssh dns
> 
> we can expect xymon to check that ssh connections exist for thats erver, and also does some sort of dns check.
> 
> what exactly IS this check?
> 
> becasue the dns on that server is runjning fine - but the xymon alert shopws red.