[hobbit] Creating a fake, or combination, client

[Andy France]

Hi Martin,
 
I do a similar thing with our Citrix servers, where I have a "Farm" host
to hold a summary of the total number of connections across all servers.
 
I do this by running a script from hobbitlaunch on the server, and
summing up the results of the individual Citrix servers using
hobbitdboard.  After parsing the results, I send a single message for
the "Farm" host in the same format as the individual host messages and
Hobbit magically makes the graph for me :-)
 
It's not too flash, but here are all the bits and pieces which make it
work.  I hope they may help you in making a similar script for a postfix
farm.
 
 
BB-HOSTS ENTRIES :

	127.0.0.1       citrix-farm    # COMMENT:"Farm Totals" testip
noconn noinfo notrends
	192.168.1.101   citrix-01      # 
	192.168.1.102   citrix-02      # 

SHELL SCRIPT /opt/hobbit/bin/citrix-totals.sh :

	#!/bin/sh
	 
	TFIL=/tmp/`basename $0`.$$
	 
	/opt/hobbit/server/bin/bb localhost "hobbitdboard
host=citrix-[0-9][0-9] test=citrix fields=msg" | gsed 's/\\n/\n/g' >
${TFIL}
	 
	LINE=`grep -v 'users active' ${TFIL}`
	 
	CSUM=`grep "users active" ${TFIL} | awk ' { sum += $1; } END {
print sum; } '`
	 
	if [ -z "${CSUM}" ]
	then
	        CSUM=0
	fi
	 
	/opt/hobbit/server/bin/bb localhost "status citrix-farm.citrix
green `date`
	 
	${CSUM} users active
	 
	
	
	${LINE}"
	 
	rm ${TFIL}

HOBBITLAUNCH.CFG ENTRY:

	[citrix-totals]
	        ENVFILE /opt/hobbit/server/etc/hobbitserver.cfg
	        NEEDS hobbitd
	        CMD /opt/hobbit/bin/citrix-totals.sh
	        LOGFILE $BBSERVERLOGS/logs/citrix-totals.log
	        INTERVAL 5m

 
The paths for the binaries etc would obviously need massaging to suit
your installation.  Good luck!
 
Andy.


________________________________

From: Ward, Martin [mailto:Martin.Ward at colt.net] 
Sent: Wednesday, 7 November 2007 1:11 a.m.
To: hobbit at hswn.dk
Subject: [hobbit] Creating a fake, or combination, client



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).

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 
---- 
NetOps TAC 
T:+44 20 7863 5218 
Group: +49 69 56607 0412 
F: +44 20 7863 5210 


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