[rrd-developers] remote rrd access (was: Anybody working on this? / Proposal)

[Tobias Oetiker]

Hi Peter,

Today Peter Stamfest wrote:

>
> Am 03.03.2011 09:47, schrieb Tobias Oetiker:
> > Hi Peter,
> >
> > Today Peter Stamfest wrote:
> >> Proposal:
> >>
> >>    - extend the FETCH rrdcached command
> >>    - implement UDEF (requires some URL handling stuff, but this could be
> >> done using regexps)
> >>    - add support code in the local rrd_fetch code similar to that for
> >> libdbi specs
> >>
> >> Comments?
> > in the trunk version of rrdtool there is code allowing to use
> > remote data from rrdcached in rrdgraph ... a more generic approach
> > might certainly be of interest ...
> I think I read something about it, but I did not look into it in detail
> so far.
>
> > I agree that in the interesst of simpler commandlines a UDEF might
> > be useful ...
>
> Great! And do you think that using URLs makes sense? An extensible
> mechanism would certainly allow for crazy things: Use HTTP URLs to
> access rrdfiles over HTTP by first downloading them - not that it would
> be very efficient, but...

since you can acess byte-ranges via html this might actually not be
all that bad ...
>
> And just to write it down for better reference: The proposed scheme is
> intended to allow to use different rrdcached connections in one
> invocation without resorting to environment variables.
>
> Would it make sense to split responsibility for implementing this, so
> that I do not trample on somebody elses code? Also note that I do not
> have any code so far,  so there won't be patches by tomorrow...

the direct remote access of rrd files also raises the portability
question and with it the issue of creating a portable
rrdfileformat ...

cheers
tobi

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi at oetiker.ch ++41 62 775 9902 / sb: -9900