[rrd-users] Re: constants

[Alex van den Bogaerdt]

Neil Calvert wrote:
> 
> For a number of these reports it would be useful to have the ability to
> place certain constants in the RRD database, for things like ifspeed.
> This way this constant can be internally referenced with CDEFs etc to
> provide bandwidth percentages. (Just an example of a possible use). The
> advantage to this is that rather than having a script to do graph
> generation pass in this constant via its command line or other
> subroutine, you can just refer to a preset variable that you know the
> value of. And if the value changes in future a quick rrdtune could
> update everything without the need to go back and change scripts.
> 
> If it's already possible - how?! :)
> 

You might consider a gauge for this.  Just grep the value from the same
place where you keep your other configurable stuff.  This way, if you
change the value it is recorded in the database and you are able to
do the proper math.  The downside is that you have to modify the
databases and config files once; also your databases will be bigger.

If not useful, at least you got your 2 cents back :)
-- 
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 / alex at slot.hollandcasino.nl                  alex at ergens.op.het.net \
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