В Птн, 08/02/2013 в 11:07 -0800, Quanah Gibson-Mount пишет:
--On Friday, February 08, 2013 8:12 PM +0200 Покотиленко Костик casper@meteor.dp.ua wrote:
В Птн, 08/02/2013 в 09:47 -0500, John Madden пишет:
As far as I can see there is no difference in configuration. The only distinction I can see is the "use case", as N-Way supposed to accept writes on all Masters, but Mirror only on one at a time.
There are configuration differences (see the Admin Guide for the needed snippets; N-Way requires MirrorMode and then some) but yes, MirrorMode requires writes to go to only one node at a time.
I've re-red those sections of docs two more times, still don't see the difference
There is no configuration difference at this point. I think there was one initially ages ago. The only difference between MMR and mirror-mode MMR is that in the latter case, writes only go to a single master instead of any master in the cluster.
In all cases, I strongly advise using delta-syncrepl based MMR with the most current OpenLDAP release (2.4.33).
Quanah, thanks alot, this clears up things.
Maybe somebody comment on number 4 from my initial post:
- In Mirror mode, can I use UpdateRef on one mirror to direct writes
to another so proxy/balancer will become not required?