Configure OpenLDAP Multi-Master Replication
Configure OpenLDAP Multi-Master Replication.
For the Settings of Provider/Consumer, it's impossible to add datas on Consumer server, but if configure this Multi-Master Settings, it's possbile to add on any Master server. | |
| [1] | |
| [2] | Configure like follows on all servers. Add syncprov module. |
[root@slapd01 ~]#
vi mod_syncprov.ldif
# create new
dn: cn=module,cn=config objectClass: olcModuleList cn: module olcModulePath: /usr/lib64/openldap olcModuleLoad: syncprov.la
ldapadd -Y EXTERNAL -H ldapi:/// -f mod_syncprov.ldif
SASL/EXTERNAL authentication started SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth SASL SSF: 0 adding new entry "cn=module,cn=config"
[root@slapd01 ~]#
vi syncprov.ldif
# create new
dn: olcOverlay=syncprov,olcDatabase={2}hdb,cn=config
objectClass: olcOverlayConfig
objectClass: olcSyncProvConfig
olcOverlay: syncprov
olcSpSessionLog: 100
ldapadd -Y EXTERNAL -H ldapi:/// -f syncprov.ldif
SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
adding new entry "olcOverlay=syncprov,olcDatabase={2}hdb,cn=config"
|
| [3] | Configure like follows on all servers. But only the parameters "olcServerID" and "provider=***", set different value on each server. |
[root@slapd01 ~]#
vi master01.ldif
# create new
dn: cn=config changetype: modify replace: olcServerID
# specify uniq ID number on each server
olcServerID: 0
dn: olcDatabase={2}hdb,cn=config
changetype: modify
add: olcSyncRepl
olcSyncRepl: rid=001
# specify another LDAP server's URI
provider=ldap://10.0.0.50:389/ bindmethod=simple
# own domain name
binddn="cn=Manager,dc=server,dc=world"
# directory manager's password
credentials=password searchbase="dc=server,dc=world"
# includes subtree
scope=sub schemachecking=on type=refreshAndPersist
# [retry interval] [retry times] [interval of re-retry] [re-retry times]
retry="30 5 300 3"
# replication interval
interval=00:00:05:00
-
add: olcMirrorMode
olcMirrorMode: TRUE
dn: olcOverlay=syncprov,olcDatabase={2}hdb,cn=config
changetype: add
objectClass: olcOverlayConfig
objectClass: olcSyncProvConfig
olcOverlay: syncprov
ldapmodify -Y EXTERNAL -H ldapi:/// -f master01.ldif
SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
modifying entry "cn=config"
modifying entry "olcDatabase={2}hdb,cn=config"
adding new entry "olcOverlay=syncprov,olcDatabase={2}hdb,cn=config"
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| [4] | Configure LDAP Client to bind all LDAP server. |
| [root@www ~]#
authconfig --ldapserver=slapd01.server.world,slapd02.server.world --update
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