[rrd-users] Re: rrdtool not storing data

Serge Maandag serge.maandag at staff.zeelandnet.nl
Sun Mar 21 21:45:23 MET 2004

> I've written a script which queries a few bandwidth and CPU stats (all
> numeric) from a cisco switch and writes them back to an 
> rrdtool database. The right command completes with no errors 
> (and returns zero), but when I query the database rrdtool 
> complains that the values are non-numeric.
> This is the command I use to store bandwidth to the rrdtool database.
> /usr/bin/rrdtool update /home/steve/public_html/rrdtool/CNE-12-DS1.rrd
>   N:0:62000:9428000:1047000:168188:146930:3227000
> rrdtool query results (minus header row)
> 1079555100: nan nan nan nan nan nan nan

Now this may be an answer that is too simple, but are
you sure you have done multiple updates, with at least
5 minutes and at most 10 minutes between them?

You are using counters and rrdtool needs consecutive updates
to calculate the rates.


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