[rrd-users] New with rrdtool - data is not plotting to graph
benjo11111 at gmail.com
Tue Sep 11 17:24:30 CEST 2012
I am new with rrdtool. I am making a graph for our application which
provides cumulative data. So for them analysis, I use derive DATA SOURCE
TYPE. Derive DST means : always take difference from current value and
my rrd command :
rrdtool create a.rrd \
--step 60 \
rrd update command :
logger rrdtool update a.rrd N:$A
it shows each time value in syslog, so it is working fine.
rrdtool graph a.png -a PNG \
--title="Info" -w $Width -h $Height \
--watermark "`date`" \
'LINE:A#00dd00:A' > /dev/null
it generates blank graph.
Where i did mistake, please provide your feedback.
One confusion from me : RRA stands for Round Robin Archive, so when
we should use MAX/MIN/AVERAGE/LAST with RRA? Please provide some example.
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