[rrd-users] Re: update problem or misunderstanding

[Lorin Scraba]

On Friday 07 November 2003 19:46, you wrote:
> Hi!
>         I have a little problem with rrdtool. Hope someone will help me.
> It'a simple
> graph for in/out traffic on a network interface. Here goes:
>
> rrdtool create arrakis.rrd --step 300 --start 1068224400
> DS:traffic_in:ABSOLUTE:300:U:U DS:traffic_out:ABSOLUTE:300:U:U
> RRA:AVERAGE:0.5:1:12 RRA:AVERAGE:0.5:12:48
>
> For update I use the following script called every 5 minutes from crontab:
> #!/bin/sh
> traffic_in=`/usr/bin/head -n 1 /var/log/acct/trf_stats_arrakis`
> traffic_out=`/usr/bin/tail -n 1 /var/log/acct/trf_stats_arrakis`
> rrdtool update /etc/mrtg/arrakis.rrd N:$traffic_in:$traffic_out
>
> And the problem:
> rrdtool fetch arrakis.rrd AVERAGE
>                traffic_in   traffic_out

Correction. It's:
rrdtool fetch arrakis.rrd AVERAGE --start N-1hours --end N
and the output:
1068224100: nan nan
1068224400: nan nan
1068224700: nan nan
1068225000: nan nan
1068225300: nan nan
1068225600: nan nan
1068225900: nan nan
1068226200: nan nan
1068226500: nan nan
1068226800: nan nan
1068227100: 2.5293076923e+03 1.4533143813e+03
1068227400: nan nan
1068227700: 4.8856666667e+02 1.8800000000e+02
1068228000: nan nan

Those values should be around 45000-50000...What's wrong?


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