Quanah Gibson-Mount quanah@symas.com schrieb am 05.12.2016 um 04:23 in
Nachricht <B493EDA8384741090D4FD1B6@[192.168.1.19]>:
--On Sunday, December 04, 2016 11:03 PM +0000 Howard Chu hyc@symas.com wrote:
Brendan Kearney wrote:
On 12/04/2016 04:49 PM, Quanah Gibson-Mount wrote:
Again, Mirror Mode is a concept, not a setting. The setting you refer to, is, as I previously noted, misnamed. Either your servers are configured to do multimaster replication, or they aren't.
Mirrormode - the concept - is irrelevant here. All of the official docs show the mirrormode setting being used in N-Way multimaster.
Because the documentation is wrong and needs to be fixed.
yes, i seem to be in the trap about the mirror mode misnomer. though ambiguous, your statements indicate that mirror mode the setting is required for n-way multi master replication.
That is what the Admin Guide already says.
And that is a proveably false statement and needs to be rectified. There is zero requirement to put a load balancer in front of an MMR setup.
But it seems to make much sense: In my experience if you configure multiple LDAP servers, the NSS resolver always uses the first configured server as long as it's reachable; even if it's not, the first configured server is tried first. After connection timeout the second server is tried... We had dhad a case when all LDAP operations were heavily delayed when two out of three servers had failed (due to rebooting the machine).
Ulrich
--Quanah
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Quanah Gibson-Mount Product Architect Symas Corporation Packaged, certified, and supported LDAP solutions powered by OpenLDAP: http://www.symas.com