Red Hat Directory Server 8.0 Administrator's Guide

Figure 8.1. Single-Master Replication
In this particular configuration, the ou=people,dc=example,dc=com suffix receives a large
number of search requests. Therefore, to distribute the load, this tree, which is mastered on
server A, is replicated to two read-only replicas located on server B and server C.
For information on setting up a single-master replication environment, see Section 4,
“Configuring Single-Master Replication”.
2.2. Multi-Master Replication
Directory Server also supports complex replication scenarios in which the same suffix
(database) can be mastered on many servers. This suffix is held in a read-write replica on each
server. This means that each server maintains a changelog for the read-write replica.
This type of configuration can work with any number of consumer servers. Each consumer
server holds a read-only replica. The consumers can receive updates from all the suppliers. The
consumers also have referrals defined for all the suppliers to forward any update requests that
the consumers receive. Such scenarios are called multi-master configurations.
Multi-Master Replication
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