[rrd-users] Re: How to extract LAST value on RRD Tables

[Judith L. Pancho]

Hi Henrik,
Thank you very much! Its my first time to use RRD tools and im not yet 
familiar with the other functions.

Thanks,
Judith L. Pancho

Henrik Stoerner wrote:
> On Fri, Jan 19, 2007 at 08:53:32PM +0800, Judith L. Pancho wrote:
>   
>> Hello,
>> Im trying to get the LAST value on the rrd table using the following 
>> command:
>>
>> ./rrdtool fetch 9100000002773.rrd LAST --start 1169199634
>>
>> but i get the following error :
>>
>> ERROR: the RRD does not contain an RRA matching the chosen CF
>>
>> However it is stated in the documentation that //rrdtool fetch can get 
>> AVERAGE,MIN,MAX,LAST.
>>     
>
> It depends on how the RRD file was created. When you create an RRD file
> you specify one or more "RRA's", and each RRA has an associated function
> which is one of these AVERAGE,MIN,MAX,LAST. You cannot get data for a 
> function which was not defined when the RRD was created - the necessary
> data simply hasn't been stored.
>
> You can use the "rrdtool dump" utility to see what RRA's are present in
> the rrd-file.
>
>
> Regards,
> Henrik
>
>
>   


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