dn: olcDatabase={0}config,cn=config
 changetype: modify
 add: olcSyncRepl
 olcSyncRepl: rid=001
   provider=ldap://192.168.0.11
   binddn="cn=admin,cn=config"
   bindmethod=simple
   credentials="secret"
   searchbase="cn=config"
   type=refreshAndPersist
   retry="5 +"
   timeout=1
 olcSyncRepl: rid=002
   provider=ldap://192.168.0.12
   [...]
 -
 add: olcMirrorMode
 olcMirrorMode: TRUE

 dn: olcDatabase={2}hdb,cn=config
 changetype: modify
 add: olcSyncRepl
 olcSyncRepl: rid=011
   provider=ldap://192.168.0.11
   binddn="cn=manager,dc=example,dc=local"
   bindmethod=simple
   credentials="secret"
   searchbase="dc=example,dc=local"
   type=refreshAndPersist
   retry="5 +"
   timeout=1
 olcSyncRepl: rid=012
   provider=ldap://192.168.0.12
   [...]
 -
 add: olcMirrorMode
 olcMirrorMode: TRUE