Re: Delete operation is delayed...

[Rex Roof <rex@wccnet.edu>]

back-ndb is for mysql?

so you're suggesting that I mirror the data using a mysql cluster and  
just build multiple frontend servers to run slapd, all connecting to  
the same mysql backend database?

-Rex

On Jul 9, 2009, at 1:16 PM, Quanah Gibson-Mount wrote:

> --On Thursday, July 09, 2009 1:09 PM -0400 Rex Roof <rex@wccnet.edu>  
> wrote:
>
> > How are we supposed to be setting up OpenLDAP servers so that we  
> > can have
> > failover?  I want to have a half-dozen OpenLDAP machines and have  
> > any one
> > of them accept writes and not be relying on any one of them to be  
> > up for
> > writes to occur.  I've asked this question numerous times and haven't
> > ever gotten a reliable answer.   It is starting to get really  
> > annoying.
>
> Well, welcome to the world of distributed systems.  You probably want
> back-ndb once a few of its indexing quirks have been worked out,  
> since that
> uses multiple slapd instances to frontend a single mysql cluster  
> database.
> You could of course, use mirror mode and chaining as an  
> alternative.  But
> in any sort of distributed system like MMR, changes get delayed.
>
> --Quanah
>
> --
>
> Quanah Gibson-Mount
> Principal Software Engineer
> Zimbra, Inc
> --------------------
> Zimbra ::  the leader in open source messaging and collaboration