slapd.conf master:
moduleload      syncprov
overlay         syncprov
syncprov-checkpoint 100 10
syncprov-sessionlog 100
index   objectClass,entryCSN,entryUUID  eq



slapd.conf slave:


syncrepl
    rid=1
    provider=ldap://192.168.0.1:389
    binddn="cn=syncuser,dc=domain,dc=com"
    bindmethod=simple
    credentials=secret_of_syncuser
    searchbase="dc=domain,dc=com"
    filter="(objectClass=*)"
    attrs="*"
    schemachecking=off
    scope=sub
    type=refreshAndPersist