[hobbit] Custom graphs with multiple data sources

[Sigurður Guðbrandsson]

Hi.

There is a fourth option, which I took as updating to snapshot caused my hobbit to break for some reason, and seeing that it is a system I must have up 99% of the day, I just backported.
Well, that was not the option anyways :)

My suggestion is that you make a custom script to parse your information and create the RRD's (actually the hobbit server manages creating the RRD's .. You just have to parse the information and send it in the proper format to hobbit).
That way you can have your multi-file RRD's (one per balancer or some) and you don't have to update to snapshot.

I wrote my script in perl (my very first perl script .. How I hate the language ;) and it works very well.
You will not find it in the Shire, mainly because I haven't posted it there yet.

If you need info on how the information is, and how to parse it, just drop me a line.

With regards,


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Sigurður Guðbrandsson

Raförninn ehf.

Suðurhlíð 35

105 Reykjavik | Iceland

sigurdur at raforninn.is | www.raforninn.is

Office: +(354) 552 2070

Mobile: +(354) 867 3573

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-----Original Message-----
From: Charles Goyard [mailto:charles.goyard at orange-ftgroup.com] 
Sent: 10. október 2007 06:50
To: hobbit at hswn.dk
Subject: Re: [hobbit] Custom graphs with multiple data sources

Hi,


Alan Sparks wrote :

> However, with this, I am only able to manage one graph, and one data 
> source, per device.  I would like to graph all the session values.
> I would also like to use multiple RRD files.  My experience with the 
> single-file, multiple-DS approach is that, if I add another virtual, 
> graphing will break (updates error out, probably since the RRD was not 
> created with this new data source defined).
> [...]

Check the september 2007 mail archives, there's a discussion about it.

There's three solutions :

- apply a patch I posted on the list (does split-ncv on a testname
  basis). My patch has a memory leak, so beware (I kill my hobbitd_rrd
  every 24h).
- send "data" messages with a body like "foo.rrd:mydsname:GAUGE:500
  (Sorry, no pointers for that one, and it needs a recent snapshot).
- take a snapshot or a least the hobbitd/rrd directory from the source,
  it includes the split-ncv feature without the memory leak (thank
  Henrik).


--
Charles Goyard - charles.goyard at orange-ftgroup.com - (+33) 1 45 38 01 31 Orange Business Services - online multimedia  // ingénierie

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