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[root@server119 slapd-server119]# uname -aLinux server119.example.com 2.6.18-308.el5xen #1 SMP Fri Jan 27 17:59:00 EST 2012 i686 i686 i386 GNU/Linux[root@server119 slapd-server119]#RHDS Version: Red Hat Directory Server 8.2.0
做rhds主辅同步时出错，在主ds(server119)的错误日志里发现如下信息：
[root@server119 slapd-server119]# pwd
/var/log/dirsrv/slapd-server119[root@server119 slapd-server119]# tail errors[20/Jul/2013:14:52:41 +0800] NSMMReplicationPlugin - agmt="cn=s199agree" (server219:636): Incremental update failed and requires administrator action[20/Jul/2013:14:54:04 +0800] NSMMReplicationPlugin - agmt="cn=s199agree" (server219:636): Unable to acquire replica: there is no replicated area "dc=server119,dc=example,dc=com" on the consumer server. Replication is aborting.[20/Jul/2013:14:54:04 +0800] NSMMReplicationPlugin - agmt="cn=s199agree" (server219:636): Unable to acquire replica: there is no replicated area "dc=server119,dc=example,dc=com" on the consumer server. Replication is aborting.[20/Jul/2013:14:54:04 +0800] NSMMReplicationPlugin - agmt="cn=s199agree" (server219:636): Incremental update failed and requires administrator action[20/Jul/2013:15:00:20 +0800] NSMMReplicationPlugin - agmt_delete: begin[20/Jul/2013:15:01:33 +0800] NSMMReplicationPlugin - agmt="cn=s119rep" (server219:636): Unable to acquire replica: there is no replicated area "dc=server119,dc=example,dc=com" on the consumer server. Replication is aborting.[20/Jul/2013:15:01:33 +0800] NSMMReplicationPlugin - agmt="cn=s119rep" (server219:636): Incremental update failed and requires administrator action[20/Jul/2013:15:01:34 +0800] NSMMReplicationPlugin - agmt="cn=s119rep" (server219:636): Unable to acquire replica: there is no replicated area "dc=server119,dc=example,dc=com" on the consumer server. Replication is aborting.[20/Jul/2013:15:01:34 +0800] NSMMReplicationPlugin - agmt="cn=s119rep" (server219:636): Unable to acquire replica: there is no replicated area "dc=server119,dc=example,dc=com" on the consumer server. Replication is aborting.[20/Jul/2013:15:01:34 +0800] NSMMReplicationPlugin - agmt="cn=s119rep" (server219:636): Incremental update failed and requires administrator action[root@server119 slapd-server119]#后面发现原因是辅助ds的suffix/directory subtree没有和主ds一样：
出错的情况：
主ds(server119)suffix/subtree: dc=server119,dc=example,dc=com辅ds(server219)suffix/subtree: dc=server219,dc=example,dc=com改为以下后即可成功同步：
主ds(server119)suffix/subtree: dc=server119,dc=example,dc=com辅ds(server219)suffix/subtree: dc=server119,dc=example,dc=com原理其实和主辅dns的域必须相同一样，ldap server的suffix就类似与dns的域。
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