Joel Krauska,<br>What you might be really asking is for loose integration across multiple disparate RRD installations?<br><br>I'm using cricket and have long surpassed the ability to collect and store data using single hosts.
<br>I've even been pushing IO limits on my shared storage.<br><br>Among the possible solutions (aside from just adding more/better/faster hardware), are:<br>* reduce IO load on RRD updates (ie: keep more in memory for longer periods, or optimize for updates like the rrd daemon alluded to would do).
<br>* integrate disparate RRD respositories at the UI level (the closest solution applicable to the problem mentioned in the original email).<br><br>Imagine a drraw URL call that would export the data in csv/xml, much like RRD XPORT does today....
<br>Then imagine the drraw UI that would 'fetch' data (via the export feature) from a _remote_ drraw UI and merge results together in a single display.<br>maybe the fetch is done via perl sockets/LWP within the CGI, or maybe the fetch is done via AJAX at the browser.....
<br><br>It could happen... it could work... it could exist before the RRD Daemon becomes a reality (unless Tobi is up to something I'm not aware of ;-) )<br><br>Anyone want to work on such a beast?<br><br>-Eric<br><br>
<div><span class="gmail_quote">On 9/12/07, <b class="gmail_sendername">David Nolan</b> <<a href="mailto:vitroth+@cmu.edu">vitroth+@cmu.edu</a>> wrote:</span><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On 9/12/07, Joel Krauska <<a href="mailto:jkrauska@gmail.com">jkrauska@gmail.com</a>> wrote:<br>> It's perhaps possible to get around this using a shared filesystem for rrds, but it would<br>> be nice to think about how drraw itself could accomplish this....
<br>><br>> Anyone else have this problem/need?<br>><br><br>Absolutely, but I don't think this is a problem that drraw should try<br>to solve. I'd like to see a more generalized solution for distributed<br>
RRD collection & graphing. I have got more devices/hosts I want to<br>graph at my primary location then I can collect with a single machine,<br>let alone graph... I'm doing the shared filesystem via NFS for<br>
graphing. Collection on two hosts, exported to a third for graphing.<br>And I shudder every time I think about it.<br><br>Tobias Oetiker (author of RRD) has been looking at adding an rrd<br>daemon which handles the file IO, buffering and smoothing it, maybe
<br>even caching it for read access. Once that happens I think<br>distributed RRD access should be fairly easy.<br><br>On the other hand... Great, why don't you add that and send us a patch. :)<br><br>-David<br>_______________________________________________
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