[rrd-users] Re: Problem in updating a RRD database through an ext ernal script

[José Maria Costa Pereira]

The problem is that when outputing: 

	rrdupdate database.rrd N:5:2

in a perl script it seems to append something like ':-1' and obviously rrd
sees something like:

	rrdupdate database.rrd N:5:2:-1

and it "thinks" I'm trying to update a database with 3 datasources when it
only has 2 datasources!! Thus returning ERROR.


Best regards,

	Jose Maria Costa Pereira
	DRE - Corporate Networks
	jose.pereira at telecelvodafone.pt



-----Original Message-----
From: Alex van den Bogaerdt [mailto:alex at slot.hollandcasino.nl]
Sent: Terça-feira, 28 de Agosto de 2001 18:08
To: José Maria Costa Pereira
Cc: rrd-users at list.ee.ethz.ch
Subject: Re: [rrd-users] Problem in updating a RRD database through an
external script


=?iso-8859-1?Q?Jos=E9_Maria_Costa_Pereira?= wrote:
> 
> 	I have a simple script which outputs the following:
> 
> 		rrdupdate database.rrd N:5:2

This is ment to be executed... (continued later on)

> 	The numbers 5 and 2 are only an example. It may return other
> numbers. But one thing is for sure it always returns integer numbers. My
> database has 2 data sources.
> 
> 	First question: The N stands for NOW (in N:5:2)?

yes.

> 	Second question: Do I need to have a \n in the end of the line:
> rrdupdate ....  ?

depends on how you process the line.

> 	Third question: This is the error I get when running the script that
> outputs the rrdupdate
> 
> 		D:\scripts>perl c:\mrtg-2.9.17\bin\mrtg stats.cfg
> 		Daemonizing MRTG ...
> 		Do Not close this window. Or MRTG will die
> 		ERROR: Cannot update d:\mrtg\pri\database.rrd with
> '999014266:3:2:-1' 
> 		expected 2 data source readings (got 3) from
> 999014266:3:2:-1:...

(continuation) ... and not as an external script for MRTG.


Try executing that line.  You're not using unix and I don't know how
this would work for windows.  Maybe writing it out as a batch file
then execute this batch file <understatement>but this seems inefficient
</understatement>.

HTH
-- 
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