[rrd-users] Inserted value becomes NaN

Jon August jonaugust at gmail.com
Thu Jan 15 17:02:20 CET 2015

I created an RRD file with this:
rrdtool create filename.rrd \
--step '86400' \
--start '1388534400' \
'DS:devices:GAUGE:172800:U:U' \
I want to store the number of devices on a network daily.  

When I try to do an update, the RRA dump shows NaN.  As if the value was ignored.  I do an update like this:

rrdtool updatev filename.rrd N:1102

What am I doing wrong?

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