Thanks Gary,

I think the thing I am missing in your example (and in general to be honest) is: What is the link between fake-host in the bb-hosts file and [custom-postfix] in the hobbitgraph.cfg file?

|\/|artin

-----Original Message-----
From: Gary Baluha [mailto:gumby3203 at gmail.com] 
Sent: 06 November 2007 15:34
To: hobbit at hswn.dk
Subject: Re: [hobbit] Creating a fake, or combination, client


On 11/6/07, Ward, Martin <Martin.Ward at colt.net> wrote: 


	Hi all, 

	I am a newbie to Hobbit and have inherited a working

system. I have a good idea of how it all hangs together but now I want to produce certain graphs and cannot figure out how.

	I have a cluster of mail servers that run Postfix; each

of these clients is monitored within Hobbit. In the Trends link for each client I have graphs showing the various mail queues (incoming, deferred etc) and this data is stored in RRD files on the Hobbit server.

	Is there a way within Hobbit of creating a false or

meta- client that can have a graph with data from all of these RRD files? Particularly I would like a graph that has all the incoming mail queue sizes on it with one line per server. I already have this information in lots of different RRD files but would like to have them all in one graph. I can create a graph outside of Hobbit to do this, but within the monitoring system it restricts the RRD files it will display data from to those in the data directory of the selected client (in the Trends link).

Hmm.  You could probably create a host and set up a noconn test

to some random IP like 10.0.0.1 (i.e. in bb-hosts: 10.0.0.1 fake-host # noconn). Regardless of what host (or fake host, if you do that), you will need to create a new RRD trend to that host.

You can create an RRD graph (by modifying hobbit-graph.cfg) that

gets its data from multiple RRD files. These files are usually created in a directory for each host, and I don't know if you can just create a symlink to those or not. But assuming that works, you should be all set in creating a single graph that plots all the other data using a single scale.

I think you would want to add the following to hobbitserver.cfg:
GRAPHS="<whatever is already there>,custom-postfix"

And then hobbit-graph.cfg would look something like this:
[custom-postfix] 
  . . .
  DEF:hosta:HostA.rrd:AVERAGE
  DEF:hostb:HostB.rrd:AVERAGE
  . . .



	I have tried creating a new client in the data files ans

symbolically linking the other RRD files into its data directory, but cannot persude the graphs to appear in the trends web page.

	Thanks for your time, 

	|\/|artin 
	

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