Error when trying to setup olcMirrorMode

[Gremaud Cyrill <cyrill.gremaud@hefr.ch>]

Hello,

I'm trying to setup N-way multimaster replication for cn=config only (for the moment). I have problem when I try to add olcMirrorMode: TRUE. Here is my ldif file to do this:

dn: olcDatabase={0}config,cn=config
changetype: modify
add: olcMirrorMode
olcMirrorMode: TRUE

and the error is the following :

root@ldap1:~/downloads/ldif/config# ldapmodify -Y EXTERNAL -H ldapi:// -f 7_addMirrorMode.ldif
SASL/EXTERNAL authentication started
SASL username: gidNumber=0+uidNumber=0,cn=peercred,cn=external,cn=auth
SASL SSF: 0
modifying entry "olcDatabase={0}config,cn=config"
ldap_modify: Server is unwilling to perform (53)
        additional info: shadow context; no update referral

I have tried a lot of things but nothing working. Please I really need your help.

Thanks a lot.

Cyrill Gremaud