[hobbit] Custom RRD graphs

Thu Nov 30 21:35:15 CET 2006

Sounds good -- you have almost written a tutorial on how to add custom
graphs

So what is in your temp file?  I usually write this stuff to a log file.

GLH
________________________________

From: Ger Maguire [mailto:ger at fwi.ie] 
Sent: Thursday, November 30, 2006 2:17 PM
To: hobbit at hswn.dk
Subject: RE: [hobbit] Custom RRD graphs

	I think I have gone through all the steps and have poured over
the docs and manpages

	So far:

	1 Created custom script outputing data to hobbit using status
switch

	$BBHOME/bin/bb $BBDISP "status $HOST.$TEST $COLOUR $OUTPUT"

	2 Created rrd-ext script and have it getting data as per below
(numeric vale for catching a % value)

	3 Modified hobbitserver.cfg

	Added acpu test to TEST2RRD="cpu=la,disk, ... ,acpu"

	Added acpu test to GRAPHS="la,disk, ... ,acpu"

	4 Modified hobbitlaunch.cfg

	[rrdstatus]
	        ENVFILE /usr/lib/hobbit/server/etc/hobbitserver.cfg
	        NEEDS hobbitd
	        CMD hobbitd_channel --channel=status
--log=$BBSERVERLOGS/rrd-status.log
	        hobbitd_rrd --rrddir=$BBVAR/rrd
--extra-script=/usr/lib/hobbit/server/ext/rrd-ext.sh --extra-tests=acpu

	I haven't modified [rrddata] as I'm sending the data in using
the status command but I'll stick it in and see if it makes a
difference.

	Added the test itself to hobbitlaunch to run every 5 mins, all
works ok pages update in hobbit

	[acpu]
	        ENVFILE /usr/lib/hobbit/server/etc/hobbitserver.cfg
	        NEEDS hobbitd
	        CMD $BBHOME/ext/acpu.sh
	        INTERVAL 5m

	5 Modified hobbitgraph.cfg with the following

	[acpu]
	        TITLE CPU Utilisation
	        YAXIS % Load
	        DEF:acpu=acpu.rrd:acpu:AVERAGE
	        AREA:acpu#00CC00:Utilisation
	        GPRINT:acpu:LAST: \: %5.1lf%s (cur)
	        GPRINT:acpu:MAX: \: %5.1lf%s (max)
	        GPRINT:acpu:MIN: \: %5.1lf%s (min)
	        GPRINT:acpu:AVERAGE: \: %5.1lf%s (avg)\n

	The rrd files get created in the correct place and the pages in
hobbit show the graph but there is just no data being displayed and the
timestamp on the acpu.rrd files is showing they are not being updated.

	This is where I'm stumped, the log files don't show any relevant
info or messages to point me to anything thats wrong.

	I'm running it on debian sarge distro using the .deb package
from sourceforge.

	Ger.

________________________________

	From: Hubbard, Greg L [mailto:greg.hubbard at eds.com] 
	Sent: 30 November 2006 19:55
	To: hobbit at hswn.dk
	Subject: RE: [hobbit] Custom RRD graphs

	Why bother when Hobbit will use your echo output to do that?

	But there is more to graphing than simply creating the RRD
files.  Next you have to create graph definitions that will use your new
files, and these graphs have to work.  Then you can add your new graphs
to the Hobbit server so they will show up with the associated test
(TEST2RRD variable) and/or in the trends display.

	You say you see the data being echoed -- are the RRD files not
getting created/updated?  Did you add your rrd-ext to the right place on
the server?  Did you add it to hobbit-rrd for both data and status
messages?

	(or whatever, I am going from dim memory)

	GLH

________________________________

		From: Ger Maguire [mailto:ger at fwi.ie] 
		Sent: Thursday, November 30, 2006 1:44 PM
		To: hobbit at hswn.dk
		Subject: RE: [hobbit] Custom RRD graphs

		Guys, When creating custom scripts, has anyone just used
rrdcreate and rrdtool update to directly output the data to the rrd
files ?

		If the the tests are all residing on the one machine and
not polling data from other clients is it an easier way to update the
graphs as I just can't get the status script to update for me ?

		Thanks,
		Ger.

________________________________

		From: Ger Maguire [mailto:ger at fwi.ie] 
		Sent: 29 November 2006 20:13
		To: hobbit at hswn.dk
		Subject: [hobbit] Custom RRD graphs

		Hi folks,

		I have created a custom script for capturing CPU
utilisation from a device and updated all the relevant files but I
cannot get my rrd files to update correctly.

		An initial rrd file gets created but the data does not
get input into it.

		I have created a rrd-ext sript which is running and is
capturing the incomming status data and by looking at the /tmp files I
can see that the echo outputs are being generated correctly every 5
mintes.

		----> rrd-ext.sh

		HOSTNAME="$1"
		TESTNAME="$2"
		FNAME="$3"

		if [ "$TESTNAME" = "acpu" ]
		then
		        echo "`date`" >> /tmp/hobbit.$HOSTNAME.$TESTNAME
		        echo "$FNAME" >> /tmp/hobbit.$HOSTNAME.$TESTNAME
		        # Analyze the message we got
		        # ACPU=`grep "connected" $FNAME | awk '{print
$14}'`
		        ACPU=`grep "The 5" $FNAME | cut -d"(" -f2 | cut
-d"." -f1`
		        # The RRD dataset definitions
		        echo "DS:acpu:GAUGE:600:0:100"
		        # The filename
		        echo "acpu.rrd"
		        # The data
		        echo "$ACPU"
		        echo "$ACPU"  >> /tmp/hobbit.$HOSTNAME.$TESTNAME
		fi

		The value I want to graph is simply a cpu % counter,
have I got the above values and setting correct for this ?

		Any help or pointers appreciated.

		Output that this produces is below showing that it is
getting the data correctly from the status input.

		---> /tmp/hobbit.$HOSTNAME.$TESTNAME

		Wed Nov 29 19:54:07 GMT 2006
		/usr/lib/hobbit/server/tmp/rrd_msg_13879
		14
		Wed Nov 29 19:59:05 GMT 2006
		/usr/lib/hobbit/server/tmp/rrd_msg_26569
		25
		Wed Nov 29 20:04:07 GMT 2006
		/usr/lib/hobbit/server/tmp/rrd_msg_2788
		17
		Wed Nov 29 20:09:12 GMT 2006
		/usr/lib/hobbit/server/tmp/rrd_msg_11944
		9

		Ger.

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