[xymon] Possible to sum rrd into one graph ?

[Ralph Mitchell]

Take a look at the man page for rrdgraph_data.  That describes how to use
CDEF:

     CDEF
         CDEF:vname=RPN expression

         This command creates a new set of data points (in memory only, not
in
         the RRD file) out of one or more other data series.

After using DEF to define the variables being pulled from the various RRDs,
you should be able to combine them with a math expression.  You would then
use the CDEF vname in the graph LINE, AREA, etc.

Ralph Mitchell

On Fri, Aug 27, 2010 at 3:56 AM, SEGLARD, Thomas <tseglard at tf1.fr> wrote:

>  Hi Josh,
>
>
>
> First, thank you for this link. Second, I’m sorry but I don’t understand
> very well your example. I don’t want to graph multiple RRD sources, I want
> to graph the sum of multiple RRD sources J Do you think Xymon could make
> it ?
>
>
>
> Thanks for help.
>
>
>
> Thomas
>
>
>
> *De :* Josh Luthman [mailto:josh at imaginenetworksllc.com]
> *Envoyé :* jeudi 26 août 2010 17:20
>
> *À :* xymon at xymon.com
> *Objet :* Re: [xymon] Possible to sum rrd into one graph ?
>
>
>
>
> https://sourceforge.net/apps/mediawiki/xymon/index.php?title=Graph_multiple_RRD_sources
>
> On Aug 26, 2010 8:04 AM, "SEGLARD, Thomas" <tseglard at tf1.fr> wrote:
>
> Hello,
>
>
>
> In Munin, its possible to sum several rrd into one graph (ie : to display
> the total bandwidth used by all your media servers). Thus, I’m asking if
> it’s possible to do this in XYmon too ? I saw the « Metrics reports » but
> you can’t sum graphs…
>
> Regards,
>
>
>
> Thomas SEGLARD
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.xymon.com/pipermail/xymon/attachments/20100827/332c65ee/attachment.html>