[hobbit] Multi-rrd graphs

[Ralph Mitchell]

I don't know if there's a way to do that with Xymon configs so, until one of
our graph wizards come up with an answer, you could look into doing it the
hard(er) way...  If you script the graph generation to drop graphs somewhere
in your web server's htdocs tree, you could follow up with a status report
to xymon containing links to the images.  Something similar to this:

   #!/bin/bash

   /usr/bin/rrdtool graph /var/www/server/htdocs/graphs/volX.png \
     DEF:xxx......
     LINE:xxx.....
     etc

   /home/xymon/server/bin/bb localhost "status server.vols green `date`
   <img src=......>"

Run that out of cron every few minutes.  It would take a bit more work to
add the zoom functions and the ability to click through to get longer
time-span graphs, but at least you'd have something...

I've done something similar to this at work because I can't install Xymon...
 :(

Ralph Mitchell


On Tue, Jul 6, 2010 at 4:04 AM, Vernon Everett <everett.vernon at gmail.com>wrote:

> Hi all
>
> OK, I am probably pushing the envelope here, but maybe it's possible.
>
> Lets assume I am collecting data about some disks.
> Or maybe we don't assume. I am doing it.
> As data, I am collecting
>    % Cache hits
>    % Reads
>    % Writes
> Using split NCV, I get a bunch of files.
> cache,vol01.rrd
> cache,vol02.rrd
> cache,vol03.rrd
> cache,vol04.rrd
> read,vol01.rrd
> read,vol02.rrd
> read,vol03.rrd
> read,vol04.rrd
> write,vol01.rrd
> write,vol02.rrd
> write,vol03.rrd
> write,vol04.rrd
>
> Using the standard graph definitions, I can get all the cache values
> on one graph, all the read values on another etc. etc.
> Is there a way to group them by the volume name?
> So I end up with a graph of cache, read and write for vol1 on one graph.
> The cache, read and write for vol1 on another etc. etc.
>
> Of course, in reality, I have far more than vol01-04, and they are not
> all volXX either, so hard coding the hobbitgraph.cfg entry isn't an
> option.
>
> Possible?
>
> Regards
>     Vernon.
>
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