H2: N-Way Multi-Master
-Import and expand from link:
-
-{{URL:http://blog.suretecsystems.com/archives/40-OpenLDAP-Weekly-News-Issue-5.html#extended}}
+For the following example we will be using 3 Master nodes. Keeping in line with
+{{B:test050-syncrepl-multimaster}} of the OpenLDAP test suite, we will be configuring
+{{slapd(8)}} via {{B:cn=config}}
+
+This sets up the config database:
+
+> dn: cn=config
+> objectClass: olcGlobal
+> cn: config
+> olcServerID: 1
+>
+> dn: olcDatabase={0}config,cn=config
+> objectClass: olcDatabaseConfig
+> olcDatabase: {0}config
+> olcRootPW: secret
+
+second and third servers will have a different olcServerID obviously:
+
+> dn: cn=config
+> objectClass: olcGlobal
+> cn: config
+> olcServerID: 2
+>
+> dn: olcDatabase={0}config,cn=config
+> objectClass: olcDatabaseConfig
+> olcDatabase: {0}config
+> olcRootPW: secret
+
+This sets up syncrepl as a provider (since these are all masters):
+
+> dn: cn=module,cn=config
+> objectClass: olcModuleList
+> cn: module
+> olcModulePath: /usr/local/libexec/openldap
+> olcModuleLoad: syncprov.la
+
+Now we setup the first Master Node (replace $URI1, $URI2 and $URI3 etc. with your actual ldap urls):
+
+> dn: cn=config
+> changetype: modify
+> replace: olcServerID
+> olcServerID: 1 $URI1
+> olcServerID: 2 $URI2
+> olcServerID: 3 $URI3
+>
+> dn: olcOverlay=syncprov,olcDatabase={0}config,cn=config
+> changetype: add
+> objectClass: olcOverlayConfig
+> objectClass: olcSyncProvConfig
+> olcOverlay: syncprov
+>
+> dn: olcDatabase={0}config,cn=config
+> changetype: modify
+> add: olcSyncRepl
+> olcSyncRepl: rid=001 provider=$URI1 binddn="cn=config" bindmethod=simple
+> credentials=secret searchbase="cn=config" type=refreshAndPersist
+> retry="5 5 300 5" timeout=1
+> olcSyncRepl: rid=002 provider=$URI2 binddn="cn=config" bindmethod=simple
+> credentials=secret searchbase="cn=config" type=refreshAndPersist
+> retry="5 5 300 5" timeout=1
+> olcSyncRepl: rid=003 provider=$URI3 binddn="cn=config" bindmethod=simple
+> credentials=secret searchbase="cn=config" type=refreshAndPersist
+> retry="5 5 300 5" timeout=1
+> -
+> add: olcMirrorMode
+> olcMirrorMode: TRUE
+
+Now start up the Master and a consumer/s, also add the above LDIF to the first consumer, second consumer etc. It will then replicate {{B:cn=config}}. You now have N-Way Multimaster on the config database.
+
+We still have to replicate the actual data, not just the config, so add to the master (all active and configured consumers/masters will pull down this config, as they are all syncing). Also, replace all {{${}}} variables with whatever is applicable to your setup:
+
+> dn: olcDatabase={1}$BACKEND,cn=config
+> objectClass: olcDatabaseConfig
+> objectClass: olc${BACKEND}Config
+> olcDatabase: {1}$BACKEND
+> olcSuffix: $BASEDN
+> olcDbDirectory: ./db
+> olcRootDN: $MANAGERDN
+> olcRootPW: $PASSWD
+> olcSyncRepl: rid=004 provider=$URI1 binddn="$MANAGERDN" bindmethod=simple
+> credentials=$PASSWD searchbase="$BASEDN" type=refreshOnly
+> interval=00:00:00:10 retry="5 5 300 5" timeout=1
+> olcSyncRepl: rid=005 provider=$URI2 binddn="$MANAGERDN" bindmethod=simple
+> credentials=$PASSWD searchbase="$BASEDN" type=refreshOnly
+> interval=00:00:00:10 retry="5 5 300 5" timeout=1
+> olcSyncRepl: rid=006 provider=$URI3 binddn="$MANAGERDN" bindmethod=simple
+> credentials=$PASSWD searchbase="$BASEDN" type=refreshOnly
+> interval=00:00:00:10 retry="5 5 300 5" timeout=1
+> olcMirrorMode: TRUE
+>
+> dn: olcOverlay=syncprov,olcDatabase={1}${BACKEND},cn=config
+> changetype: add
+> objectClass: olcOverlayConfig
+> objectClass: olcSyncProvConfig
+> olcOverlay: syncprov
+
+Note: You must have all your server set to the same time via {{http://www.ntp.org/}}
H2: MirrorMode