[Xymon] Status, NCV and time stamps

[Matt Vander Werf]

(Sending this again to the list, as I sent it using the wrong e-mail
previously (non-subscriber e-mail))

I second this request for enhancement. It would be nice to be able to send
more data from the client to be displayed on the column/test page, but not
get parsed to be included in the RRD graph. Only parsing certain lines that
are in the NCV format would be a nice feature. Something like what J.C.
mentioned ("a data parser that looks for a hidden HTML comment marker for
lines to process (and ignores the rest)") would work well for this, IMO.

Or is there a way to do this already? (even through a hack?)

Nothing urgent, just something that would be nice to be included in some
future Xymon release.

Thanks.

--
Matt Vander Werf

On Tue, Oct 6, 2015 at 10:39 AM, Matt Vander Werf <matt1299 at gmail.com>
wrote:

> I second this request for enhancement. It would be nice to be able to send
> more data from the client to be displayed on the column/test page, but not
> get parsed to be included in the RRD graph. Only parsing certain lines that
> are in the NCV format would be a nice feature. Something like what J.C.
> mentioned ("a data parser that looks for a hidden HTML comment marker for
> lines to process (and ignores the rest)") would work well for this, IMO.
>
> Or is there a way to do this already? (even through a hack?)
>
> Nothing urgent, just something that would be nice to be included in some
> future Xymon release.
>
> Thanks.
>
> --
> Matt Vander Werf
>
> On Mon, Oct 5, 2015 at 7:48 PM, Boldt, David <dboldt at usgs.gov> wrote:
>
>> Thanks for these leads. Will looks at both the filter and "trends"
>> message options.
>>
>> As a request for enhancement, I think it would be useful to have an
>> option to use a regexp to extract data from the status, one for each
>> variable.
>>
>>
>>
>> On Mon, Oct 5, 2015 at 7:36 PM, J.C. Cleaver <cleaver at terabithia.org>
>> wrote:
>>
>>> On Mon, October 5, 2015 3:52 pm, Boldt, David wrote:
>>> > I'm in the process of converting Big Brother tests to XYMon and would
>>> like
>>> > to enable RRD/graphics for these tests.
>>> >
>>> > Several of these tests present date/time information which is
>>> important.
>>> >
>>> > As a workaround for one test I have replaced the colon on a HH:MM:DD
>>> > formatted date with a dot, but it doesn't really look like a time
>>> anymore.
>>> >
>>> > * Is there a way to have NCV ignore colons (and only use "=")?
>>> >
>>> > * Is there a way to have NCV ignore a line (which might contain
>>> colons)?
>>>
>>>
>>> Unfortunately, there isn't a way to do either of these at the moment. I'd
>>> considered a data parser that looks for a hidden HTML comment marker for
>>> lines to process (and ignores the rest), but it's not quite present yet.
>>>
>>>
>>> >
>>> > * Can I use Data messages in such a way that the corresponding Status
>>> > message is not parsed?
>>>
>>> The easiest way to do this would be to add a --filter= option to the
>>> xymond_channel command line for the xymond_rrd process that's handling
>>> the
>>> *status* channel, but not the data channel.
>>>
>>> There's a CPU load hit for doing so (since now you're doing a PCRE on
>>> each
>>> message), however it may not have much of an impact depending on your
>>> message volume.
>>>
>>>
>>> > * Might there be some other mechanism entirely?
>>>
>>> Generally, speaking for more advanced RRD submission, the 'trends'
>>> message
>>> can be a useful data payload which is read directly by xymond_rrd. The
>>> advantage there (aside from more direct control) is the ability to send
>>> data points for multiple graphs at once, which could outweigh the expense
>>> of another message transmission.
>>>
>>>
>>> HTH,
>>>
>>> -jc
>>>
>>>
>>>
>>
>>
>> --
>>                                          -- David Boldt
>>                                             <dboldt at usgs.gov>
>>
>>
>>    "Ah, this is obviously some strange usage of the word 'safe' that I
>> wasn't previously aware of."
>>     --Douglas Adams (1952 - 2001), Arthur Dent in "The Hitchhikers Guide
>> to the Galaxy"
>>
>>
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>>
>>
>
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