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Re: In MirrorMode - proxy or external frontend needed?
Quanah Gibson-Mount wrote:
--On Friday, July 06, 2012 1:41 PM +0200 Pieter Baele
I've 2 servers in MirrorMode, a part of the tree wil also be partially
replicated to 3 slaves.
Do I really need an LDAP proxy or Load balancer(s) so writes are only
directed to one server?
In our LDAP, the number of writes will be very very low, most of them
will be reads (authentication, ssh keys, puppet nodes...)
Any benefit in using 'normal' n multimaster instead of MirrorMode?
You don't have to redirect writes to just one server and set up heartbeat
monitoring etc? Mirrormode is just N-way multimaster with a proxy/balancer
in front of it. Whether or not that is what you want is up to you to
Personally, I'm just using delta-syncrepl based N-Way MMR.
The virtue of using MirrorMode is that you know for certain that you will
never have an unresolvable data inconsistency due to conflicting writes being
applied at two different masters at once.
Aside from that, yes, it's just N-Way multimaster.
-- Howard Chu
CTO, Symas Corp. http://www.symas.com
Director, Highland Sun http://highlandsun.com/hyc/
Chief Architect, OpenLDAP http://www.openldap.org/project/