All, I'm trying to get N-Way Multi-master replication working, and can see each server polling each other but replication doesn't see to update. I have two servers auth03 and auth04. Both servers are Centos 6.5 with OpenLDAP 2.4.23-34.el6_5.1 from the Base/Updates CentOS repository. What I see is that each server seems to contact the other and both get log entries like this. I can post more logs if need be. I haven't been able to find much on "got empty syncUUID" Apr 14 15:44:32 auth03 slapd[1467]: daemon: epoll: listen=11 active_threads=0 tvp=zero Apr 14 15:44:32 auth03 slapd[1467]: connection_get(22) Apr 14 15:44:32 auth03 slapd[1467]: connection_get(22): got connid=0 Apr 14 15:44:32 auth03 slapd[1467]: =>do_syncrepl rid=004 Apr 14 15:44:32 auth03 slapd[1467]: =>do_syncrep2 rid=004 Apr 14 15:44:32 auth03 slapd[1467]: do_syncrep2: rid=004 got empty syncUUID with LDAP_SYNC_ADD Apr 14 15:44:32 auth03 slapd[1467]: connection_get(22) Apr 14 15:44:32 auth03 slapd[1467]: connection_get(22): got connid=0 Apr 14 15:44:32 auth03 slapd[1467]: daemon: removing 22 Apr 14 15:44:32 auth03 slapd[1467]: do_syncrepl: rid=004 rc -1 retrying (29 retries left) Here is the configs for each server: Each server has a unique server ID as well. I haven't tried to get my main user database replicating, as it appears the config database isn't replicating yet. Auth03 Config: slapcat -s olcDatabase={0}config,cn=config dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcAccess: {0}to * by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external ,cn=auth" manage by dn.base="cn=Admin,cn=config" manage by dn.exact="uid=sync repl,ou=System,dc=livegamer,dc=com" read by * none olcRootPW:: <redacted> olcAddContentAcl: TRUE olcLastMod: TRUE olcMaxDerefDepth: 15 olcReadOnly: FALSE olcRootDN: cn=config olcSyncUseSubentry: FALSE olcMonitoring: TRUE structuralObjectClass: olcDatabaseConfig olcSyncrepl: {0}rid=004 provider="ldaps://auth04.pax.livegamer.com" type=refre shAndPersist retry="60 30 300 +" searchbase="cn=config" bindmethod=simple bin ddn="uid=syncrepl,ou=System,dc=livegamer,dc=com" tls_reqcert=allow credential s=<redacted> olcSyncrepl: {1}rid=003 provider=ldaps://auth03.pax.livegamer.comtype=refresh AndPersist retry="60 30 300 +" searchbase="cn=config" bindmethod=simple bindd n="uid=syncrepl,ou=System,dc=livegamer,dc=com" tls_reqcert=allow credentials= <redacted> olcMirrorMode: TRUE entryCSN: 20140414153033.402795Z#000000#003#000000 modifiersName: cn=config modifyTimestamp: 20140414153033Z dn: olcOverlay={0}syncprov,olcDatabase={0}config,cn=config objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {0}syncprov structuralObjectClass: olcSyncProvConfig entryUUID: 9cec0db6-5377-1033-940a-233ba8867211 creatorsName: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth createTimestamp: 20140408144128Z olcSpCheckpoint: 100 10 entryCSN: 20140409154557.570189Z#000000#003#000000 modifiersName: cn=config modifyTimestamp: 20140409154557Z dn: olcOverlay={1}syncprov,olcDatabase={0}config,cn=config objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {1}syncprov structuralObjectClass: olcSyncProvConfig entryUUID: 4c7ef0fe-538c-1033-941d-1b46f26937f8 creatorsName: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth createTimestamp: 20140408170933Z olcSpCheckpoint: 100 10 entryCSN: 20140409154608.786640Z#000000#003#000000 modifiersName: cn=config modifyTimestamp: 20140409154608Z Auth04 Config: slapcat -s olcDatabase={0}config,cn=config dn: olcDatabase={0}config,cn=config objectClass: olcDatabaseConfig olcDatabase: {0}config olcRootPW:: <redacted> olcAddContentAcl: TRUE olcLastMod: TRUE olcMaxDerefDepth: 15 olcReadOnly: FALSE olcRootDN: cn=config olcSyncUseSubentry: FALSE olcMonitoring: TRUE structuralObjectClass: olcDatabaseConfig olcAccess: {0}to * by dn.base="gidNumber=0+uidNumber=0,cn=peercred,cn=external ,cn=auth" manage by dn.base="cn=Admin,cn=config" manage by dn.exact="uid=sync repl,ou=System,dc=livegamer,dc=com" read by * none olcSyncrepl: {0}rid=003 provider=ldaps://auth03.pax.livegamer.comtype=refresh AndPersist retry="60 30 300 +" searchbase="cn=config" bindmethod=simple bindd n="uid=syncrepl,ou=System,dc=livegamer,dc=com" tls_reqcert=allow credentials= <redacted> olcSyncrepl: {1}rid=004 provider=ldaps://auth04.pax.livegamer.comtype=refresh AndPersist retry="60 30 300 +" searchbase="cn=config" bindmethod=simple bindd n="uid=syncrepl,ou=System,dc=livegamer,dc=com" tls_reqcert=allow credentials= <redacted> olcMirrorMode: TRUE entryCSN: 20140414152957.400652Z#000000#004#000000 modifiersName: cn=config modifyTimestamp: 20140414152957Z dn: olcOverlay={0}syncprov,olcDatabase={0}config,cn=config objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {0}syncprov structuralObjectClass: olcSyncProvConfig entryUUID: aabb3a20-5377-1033-8399-57009c40c824 creatorsName: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth createTimestamp: 20140408144151Z olcSpCheckpoint: 100 10 entryCSN: 20140409154507.269469Z#000000#004#000000 modifiersName: cn=config modifyTimestamp: 20140409154507Z dn: olcOverlay={1}syncprov,olcDatabase={0}config,cn=config objectClass: olcOverlayConfig objectClass: olcSyncProvConfig olcOverlay: {1}syncprov structuralObjectClass: olcSyncProvConfig entryUUID: 5151199a-538c-1033-83f9-bd35daeffcf0 creatorsName: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth createTimestamp: 20140408170941Z olcSpCheckpoint: 100 10 entryCSN: 20140409154526.632472Z#000000#004#000000 modifiersName: cn=config modifyTimestamp: 20140409154526Z Please let me know what additional info I may need to provide. Thank you Matt P.