Hello,

I set up 10 OpenLDAP Servers in MirrorMode replication.  (Using OpenLDAP 2.4.24)

syncrepl

[Server1]  provider: server10, server2 [Server2]  provider: server1,  server3 [Server3]  provider: server2,  server4 [Server4]  provider: server3,  server5 [Server5]  provider: server4,  server6 [Server6]  provider: server5,  server7 [Server7]  provider: server6,  server8 [Server8]  provider: server7,  server9 [Server9]  provider: server8,  server10 [Server10] provider: server9,  server1

(like the shape of a ring.)

When data was updated by Server1, the value was updated only by Server1 and Server3.  (Reproducibility is low)

Question * How to investigate the cause which was not replicated?

* Although all the servers become a setup which serves both as a provider and a consumer, is there any problem?

* Is there the method(API) that can detect what was replicated?

Thanks. Hiro

Configuration

Server1 --------------------------------------------------------------- overlay    syncprov syncprov-checkpoint 100 5 syncprov-sessionlog 1000

serverID   1

syncrepl   rid=2            provider=ldap://server2            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

syncrepl   rid=10            provider=ldap://server10            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

mirrormode on

---------------------------------------------------------------

Server2 --------------------------------------------------------------- overlay    syncprov syncprov-checkpoint 100 5 syncprov-sessionlog 1000

serverID   2

syncrepl   rid=1            provider=ldap://server1            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

syncrepl   rid=3            provider=ldap://server3            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

mirrormode on

---------------------------------------------------------------

Server3 --------------------------------------------------------------- overlay    syncprov syncprov-checkpoint 100 5 syncprov-sessionlog 1000

serverID   3

syncrepl   rid=2            provider=ldap://server2            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

syncrepl   rid=4            provider=ldap://server4            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

mirrormode on

---------------------------------------------------------------

....

Server10 --------------------------------------------------------------- overlay    syncprov syncprov-checkpoint 100 5 syncprov-sessionlog 1000

serverID   10

syncrepl   rid=9            provider=ldap://server9            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

syncrepl   rid=1            provider=ldap://server1            bindmethod=simple            binddn="cn=Manager,dc=my-domain,dc=com"            credentials="secret"            searchbase="dc=my-domain,dc=com"            schemachecking=off            type=refreshAndPersist            retry="2 30 30 +"

mirrormode on

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