I've been doing this... I'm not sure if it's "right" but it works well.
If I am collecting a number, say LAG=7 (in seconds)...
TFILE=${BBRRDS}/${HOST}/${TEST}.rrd
if test ! -f ${TFILE}
then
rrdtool create ${TFILE} DS:trip:GAUGE:600:1:U RRA:AVERAGE:0.5:1:576 RRA:AVERAGE:0.5:6:576 RRA:AVERAGE:0.5:24:576 RRA:AVERAGE:0.5:288:576 fi rrdtool update ${TFILE} N:${LAG}
This one is a little more sophisticated... it looks at the RPM of 4 different fans...
TFILE=${BBRRDS}/${HOST}/rpm.`printf "fan_%02d" ${2}`.rrd
if test ! -f ${TFILE}
then
rrdtool create ${TFILE} DS:rpm:GAUGE:600:1:U RRA:AVERAGE:0.5:1:576 RRA:AVERAGE:0.5:6:576 RRA:AVERAGE:0.5:24:576 RRA:AVERAGE:0.5:288:576 fi rrdtool update ${TFILE} N:${3}
You will also have to update your hobbitgraph.cfg:
Note the first one is mail.rrd and the actual variable is "trip", so the graph config looks like:
[mail] TITLE Mail Round-Trip Time YAXIS Seconds DEF:offset=mail.rrd:trip:AVERAGE LINE2:offset#00CC00:Seconds GPRINT:offset:LAST: \: %5.1lf (cur) GPRINT:offset:MAX: \: %5.1lf (max) GPRINT:offset:MIN: \: %5.1lf (min) GPRINT:offset:AVERAGE: \: %5.1lf (avg)\n
The second one looks at MULTIPLE entries for one host, so it looks like:
[rpm] FNPATTERN rpm.(.+).rrd TITLE Revolutions per Minute YAXIS RPM DEF:p at RRDIDX@=@RRDFN@:rpm:AVERAGE LINE2:p at RRDIDX@#@COLOR@:@RRDPARAM@ GPRINT:p at RRDIDX@:LAST: \: %5.1lf (cur) GPRINT:p at RRDIDX@:MAX: \: %5.1lf (max) GPRINT:p at RRDIDX@:MIN: \: %5.1lf (min) GPRINT:p at RRDIDX@:AVERAGE: \: %5.1lf (avg)\n
Modify hobbitserver.cfg and make sure you update the TEST2RRD and GRAPHS items so that you'll see them.
Note that if you're really collecting just one number and want to graph it, using the "NCV" method described in the "Help > Custom Graphs" tutorial is MUCH easier.
Jon
Roberts, James wrote:
sorry to bother you but....
Is there an easy walk through on how to add custom strip output to RRD graphs?
Thanks in advance
James....
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