[Xymon] "acceptonly" behavior

[Jeremy Laidman]

This seems like a really neat idea.  I think it would be useful to have
rejected updates show up in the same way as ghosts in the ghost report.
And/or the host's "info" page.

I wonder if the matching syntax can support exclusion as well as inclusion,
so we might say "accepttests=*:!cpu,!disk" to accept all but not CPU and
disk.  Alternatively, two keywords (such as "acceptonly=" and
"acceptnot="), perhaps mutually exclusive or "last one wins", would be
sufficient.


On 7 November 2015 at 05:19, John Thurston <john.thurston at alaska.gov> wrote:

> The "acceptonly" concept has been discussed briefly here, and was tried
> out in 4.3.22-RC3. It's behavior wasn't as expected and it was removed
> again. If this tag is going to make its way back in, I think we should have
> a little discussion of how we'd like it to behave. Since I originally
> brought the subject up, I figure it's polite if I started this conversation.
>
> What would be most useful to me is a per-host tag which was also accepted
> on the .default. host lines. The tag would carry one or more test names.
> Any messages for the host for a test not named on this tag would be
> discarded as if they had never been received. An event would not be logged
> for this message. A case-insensitive string match would meet my needs.
>
> The affected host will be able to send any messages they like, but only
> those named in the 'acceptonly' tag will be accepted.
>
> If test results for a newly-excluded host.test combination exist, it will
> eventually result in a purple for that host.test, just as if the host had
> stopped reporting that test.
>
> If test results for a newly-excluded host.test combination do not exist,
> there will never be a record of them in the history and they will not
> appear on any report or create any alarms.
>
> How might this tag interact with some other functions; like proxy,
> msgcache, or pulldata? Do messages from these sources enter the flow early
> enough that tags in hosts.cfg can have the desired effect?
>
> --
>    Do things because you should, not just because you can.
>
> John Thurston    907-465-8591
> John.Thurston at alaska.gov
> Enterprise Technology Services
> Department of Administration
> State of Alaska
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