[rrd-users] Re: RRD with historical data

Serge Maandag serge.maandag at staff.zeelandnet.nl
Tue Oct 18 16:09:48 MEST 2005

> I tried this:
> rrdtool create test.rrd -b now-10d -s 86400 
> DS:msgs:ABSOLUTE:86400:U:U RRA:AVERAGE:0.5:1:10
> and then
> rrdtool update test.rrd 1128643200:100
> which returned
> ERROR: illegal attempt to update using time 1128643200 when 
> last update time is 1128776944 (minimum one second step)
> What am I doing wrong?

A database that starts 10 days ago and has an RRA with 
10 days of samples ends approximately now.

You can only add data to the end of the database, rrdtool
will shift the values in time. So what you need is a
database that ends 10 days ago. Try:

rrdtool create test.rrd -b now-22d -s 86400 \
DS:msgs:ABSOLUTE:86400:U:U RRA:AVERAGE:0.5:1:10

rrdtool update test.rrd 1128643200:100


p.s. try it within 2 days, otherwise it will give the
same complaint again :)

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