OpenLDAP : Multi-Master Replication2024/05/20 |
Configure OpenLDAP Multi-Master Replication.
For the Settings of Provider/Consumer, it's impossible to add data on Consumer server, however, if configure this Multi-Master Settings, it's possible to add on any Master server. |
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[1] | |
[2] | Configure like follows on all servers. Add syncprov module. |
root@dlp:~#
vi mod_syncprov.ldif # create new dn: cn=module,cn=config objectClass: olcModuleList cn: module olcModulePath: /usr/lib/ldap 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@dlp:~#
vi syncprov.ldif # create new dn: olcOverlay=syncprov,olcDatabase={1}mdb,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={1}mdb,cn=config" |
[3] | Configure like follows on all servers. However, only the parameters [olcServerID] and [provider=***], set different value on each server. |
root@dlp:~#
vi master01.ldif # create new dn: cn=config changetype: modify replace: olcServerID # specify unique ID number on each server olcServerID: 101 dn: olcDatabase={1}mdb,cn=config changetype: modify add: olcSyncRepl olcSyncRepl: rid=001 # specify another LDAP server's URI provider=ldap://10.0.0.52:389/ bindmethod=simple # your domain suffix binddn="cn=admin,dc=srv,dc=world" # directory manager's password credentials=password searchbase="dc=srv,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 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={1}mdb,cn=config" |
[4] | Configure LDAP Client to bind all LDAP server. |
root@client:~#
vi /etc/nslcd.conf # line 10 : add LDAP Consumer uri ldap://dlp.srv.world/ ldap://node02.srv.world/
systemctl restart nslcd |
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