[Xymon] how to represent status of something not associated with a single host?

[Andy Smith]

Hi,

I have used the combo test to great effect in these circumstances.  
Configure a standard network test (eg smtp) on each server, but exclude 
the smtp column from the row for that server.  Then configure a combo 
test for some made-up server name on separate row, you can play with 
NAME in hosts.cfg to display something useful on the page instead of 
your made-up name.   My combo.cfg may contain something like this:

MyImportantService.SMTP_PRD.smtp = ( \
server1.smtp && \
server2.smtp \
)

Just a couple of things that caught me out that you may want to beware 
of ...

1) Test names are stored internally by first usage and subsequent 
matches are done ignoring case, so if for example, dbcheck.pl has 
defined a test called "Cluster" then all the following will match :-
      cluster -> Cluster
      CLUSTER -> Cluster
      CluSter -> Cluster
so even if you define your column names in lower case, they will appear 
on the display in original case.
2) host names with dashes must be escaped because My-Important-Service 
will be interpreted as algebra if it appears on the RHS of any rule.

-- 
Andy

On 21/08/2020 18:17, Richard L. Hamilton wrote:

> Let's say I have something, in this case DHCP server failover status, that although the parts of it run on two or more hosts, isn't strictly associated with either one (ideally if both DHCP servers are up, they'd both show the same failover status for each other). It could be some other distributed processing state that doesn't depend on any single system to still be available.
>
> Let's say even that I can write a server-side script for it.  Where the heck should I show the information? Maybe make up a fake host for global state like that, suppress display of all the usual probes for it, and only show the ones I want?
>
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