[Xymon] Graph right-axis in Xymon

Mon Jun 11 16:32:00 CEST 2012

Hi Ralph,

So I tried your example and it didn't work for me.  I therefore concluded
there was a problem with my rrdtool.  It turns out that the version used by
xymon was not the version I thought - it was an even older one I had
compiled way back when, rather than the newer version installed by yum.  The
older version didn't support the right-axis options!  Doh!  So I removed the
compiled version, yum installed rrdtool-devel (which was missing) and
reconfigured and recompiled xymon.  Now right-axis works!  (In multi-line
format.)

I'm not too worried about getting it working in single-line format, but
thanks so much for all the help!  I would probably have given up without you
assuring me it could work.

Kind regards, 

SebA

  _____  

From: Ralph Mitchell [mailto:ralphmitchell at gmail.com] 
Sent: 08 June 2012 18:06
To: SebA
Cc: xymon at xymon.com
Subject: Re: [Xymon] Graph right-axis in Xymon

I don't have a working example handy where I could do a screenshot, but on
my system at work I just modified the [la] entry with extra lines like this:

        AREA:la#00CC00:CPU Load Average
        -u 1.0
        --right-axis
        1:0
        --right-axis-label
        Load
        GPRINT:la:LAST: \: %5.1lf (cur)

and that gives me markers and a label on the right axis of the cpu graphs.

What I meant by "set it up as a single line" was to make it look similar the
-u & -l options:

        --right-axis 1:0
        --right-axis-label Load

That will require some code additions, as noted in my earlier email.

This is working in SLES11, with rrdtool-1.3.7

Ralph Mitchell

On Fri, Jun 8, 2012 at 8:12 AM, SebA <spah at syntec.co.uk> wrote:

Hi Ralph,

I tried it on the la (default CPU) graph (in various positions) and it does
not work for me on Xymon 4.3.7.  My rrd version is old but it does support
right-axis.  Can you share the entire graphs.cfg entry you have working (or
preferably using one of the default graphs)?

I'm not quite sure what you mean by 'To set it up as a single line in
graphs.cfg'...  There's more to it than adding an axis and a label?

Kind regards, 

SebA

  _____  

From: Ralph Mitchell [mailto:ralphmitchell at gmail.com] 
Sent: 07 June 2012 19:40
To: SebA
Cc: xymon at xymon.com
Subject: Re: [Xymon] Graph right-axis in Xymon

I just tried it on a random temperature graph, and it seems to work as two
lines: 

    --right-axis
    10:-1000

That definitely put an axis on the right side of the graph.

To set it up as a single line in graphs.cfg, you'll need to do some work on
xymon-4.3.7/web/showgraph.c.  Starting at line 1068, you can see how other
options work, such as --title, height, width, upperlimit & lowerlimit.  I
think you'd need to add something to the gdef_t struct and some handling in
load_gdefs at line 314.  Dunno what else.

But that's just a wild guess...  :-)

Ralph Mitchell

On Thu, Jun 7, 2012 at 12:05 PM, SebA <spah at syntec.co.uk> wrote:

Hi,

Has anyone got a right-axis working in Xymon graphs?  The nearest info I can
find is the post below, but I still can't get it to work seperating
--right-axis from the parameter with a line-break.  Does anyone have a
working example?  If I put --right-axis in the graphs.cfg, it just does not
display it.

Many thanks,

SebA

> -----Original Message-----
> From: David Peters [mailto:davidp at electronf.com]
> Sent: 06 December 2009 06:49
> To: hobbit at hswn.dk
> Subject: RE: [hobbit] Extra graph parameters.
>
> Hang on a sec....
>
> Debugging shows that there is a special case for -l and -u
> where it picks up
> two tokens on the same line (ie -l 0). The default case is that
> hobbitgraph.c expects parameters to be separated on word per line:
>
> --right-axis
> 10:-1000
>
> Or
>
> -c
>
> CANVAS:#449900
>
>
> Hmmm that seems a bit counterintuitive as it is almost like
> rrdtool but not
> quite, which can be confusing.
>
>
> -----Original Message-----
> From: David Peters [mailto:davidp at electronf.com]
> Sent: Sunday, 6 December 2009 5:11 PM
> To: hobbit at hswn.dk
> Subject: [hobbit] Extra graph parameters.
>
>
> I thought you could just add extra rrdtool graph commandline
> parameters to
> the hobbitgraph file for a graph section and hey presto it
> would use them.
> This seems to work for some and not for others. (eg -e and -A work)
>
> It may be a more generic issue related to parameter
> assumptions within the
> code, but anyway, I added a some code to handle a couple of additional
> directives in hobbitgraph.cfg. (RSCALE, RFORMAT and RLABEL -
> in order to add
> a different scale to the right hand y axis.)
>
> Should I look deeper into the code and see why --right-axis
> scale:shift,
> --right-axis-format and --right-axis-label seem to get
> ignored if I add them
> to hobbitgraph.cfg.
>
> Or should I just use the code that I now have that uses my
> Hobbit specific
> directives.
>
> Or am I missing something entirely altogether?

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