Dear Folks,
I am having trouble understanding http://www.openldap.org/doc/admin24/dual_dc.png. In particular, I do not understand the exact meaning of the bidirectional arrows, and the purpose of the upper pair of load balancers.
1, Are the upper load balancers there to chain writes to both mirror mode masters?
2. Are the "replica pool" configured to replicate from both masters or only from one?
I am setting up mirror mode masters both in the same data centre, with one slave offsite. Should all the slaves slave from both masters, or should they slave from a load balancer which decides which master is getting the writes at present?
Although our slaves are busy, surviving network issues with data consistent and correct is very important. Network outages and strange disconnects are the rule without automated configuration management for network devices.