Re: N-way multimaster error code 53 - shadow context

[Jonathan Clarke <jclarke@linagora.com>]

On 19.02.2009 10:36, Adrien Futschik wrote:
> Hy !
>
> it's me again :)

Hi again Adrien ;)

> I am still testing n-way multi master replication with OpenLDAP 2.4.14. I
> don't know why I could modify my olcSyncrepl attribute from my data bdb.
>
> I am binding with cn=config, and I can modify the olcSyncrepl attribute from
> olcDatabase={0}config, but not from olcDatabase={1}bdb !
>
> I am getting this error :
> 08:57:25: Failed to update entry olcDatabase={1}bdb, cn=config
> Reason: [LDAP: error code 53 - shadow context; no update referral]
>
> This appends on both masters. Is this supposed to be like that ? I have
> configured cn=config to replicate, this should work right ?

When you configure a database with syncrepl replication, it is marked as 
a shadow context. This makes sense for the general case when a database 
is a "slave" of a master server. Trying to update a shadowed database 
will return the "shadow context; no update referral" error, unless a 
"updateref" is set on that DB.

However, if you're using multi-master, and have set mirrormode on, this 
should no longer be the case, and all updates will be accepted.

So you should check:
1) That mirrormode is on
2) That your slapd listeners match your syncrepl providers, as I 
suggested in another thread

If this is all the case, please give us your configuration, and tell us 
what operations you do that lead to this situation.

Regards,
Jonathan

--
Jonathan Clarke
--
LinID - Open Source Identity Management
---------------------------------------------------------------
Linagora
27 rue de Berri, 75008 Paris
Tel: 01 58 18 68 28 / 06 99 60 03 10
---------------------------------------------------------------
Ldap Synchronization Connector (LSC) - http://lsc-project.org/
---------------------------------------------------------------