[hobbit] Help with graphing

[Vernon Everett]

Hi Henrik

Thanks
This helped me a lot. I got the graph working, but it's very busy.
I need to split this over 2, or even 3 graphs.
However, before I bug you any more, I would love to RTFM, as you say.

> I'd advise anyone trying to do custom graphs to read the "rrdcreate"
> man-page from RRDtool. Here you'll find this:

However, I found this. :-(

---snip---
Not Found

The requested URL /hobbit/help/manpages/man1/rrdcreate.1.html was not
found on this server.
Apache/2.0.54 (Debian GNU/Linux) PHP/4.3.10-13 mod_ssl/2.0.54
OpenSSL/0.9.7e Server at www.hswn.dk Port 80
---snip---

If you get the time, could you repair it?

Cheers, and thanks
    Vernon


-----Original Message-----
From: Henrik Stoerner [mailto:henrik at hswn.dk] 
Sent: Friday, 6 May 2005 4:02 PM
To: hobbit at hswn.dk
Subject: Re: [hobbit] Help with graphing

On Fri, May 06, 2005 at 02:45:29PM +0800, Vernon Everett wrote:
> /var/lib/hobbit/rrd/aufin2/tablespace.rrd: can't parse argument
> 'DS:siebprod.XDB:GAUGE:600:0:100'
[snip]
> /var/lib/hobbit/rrd/aufin2/tablespace.rrd: can't parse argument
> 'DS:siebprod_LOADER_DATA:GAUGE:600:0:100'

I'd advise anyone trying to do custom graphs to read the "rrdcreate"
man-page from RRDtool. Here you'll find this:

    A ds-name must be 1 to 19 characters long in the 
    characters [a-zA-Z0-9_].


[no graphs show up]
> My hobbitgraph.cfg entry for this looks like this.
> 
> ---snip---
> [ora9-sga]
>         FNPATTERN tablespace(.*).rrd
>         TITLE TableSpace Utilization
>         YAXIS % Full
>         DEF:p at RRDIDX@=@RRDFN@:pct:AVERAGE

The DEF: line here is wrong. The "pct" here is the name of the dataset
you want to graph - the same string that you use in the "DS:" definition
of the RRD file. So to get a graph of the siebprod_XDB data, you should
have
          DEF:p at RRDIDX@=@RRDFN@:siebprod_XDB:AVERAGE
          LINE2:p at RRDIDX@#@COLOR@:@RRDPARAM@

If you want to graph more than one dataset in a single image, you just 
add more DEF and LINE entries - but make sure you keep a unique name for
each of the DEF's you define. E.g.

          DEF:whsidx at RRDIDX@=@RRDFN@:siebprod_WHS_INDEX:AVERAGE
          DEF:whsdata at RRDIDX@=@RRDFN@:siebprod_WHS_DATA:AVERAGE
          LINE2:whsidx at RRDIDX@#@COLOR@:@RRDPARAM@
          LINE2:whsdata at RRDIDX@#@COLOR@:@RRDPARAM@

But that is usually not a good idea when you are also combining multiple
RRD files into one graph.


Regards,
Henrik


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