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Re: syncrepl push model with searchbase=""

ml+openldap@esmtp.org wrote:

I'm trying to replace OpenLDAP 2.3.x with 2.4.18 (this project
started before 2.4..19 came out). The old configuration uses slurpd,
hence I have been tasked to set up a producer/consumer replication
via syncrepl using the push model. I'm following the example from
the admin guide but I have to modify the suffix/searchbase to be
"" (as we allow pretty much anything in the DB).

Doing this causes these log messages (loglevel 0x4000):

on the master:
do_syncrep2: rid=001 LDAP_RES_INTERMEDIATE - REFRESH_DELETE
do_syncrep2: cookie=rid=001,sid=001,csn=20091014205621.868761Z#000000#001#000000
slap_queue_csn: queing 0x2aaaac001d90 20091014205621.868761Z#000000#001#000000
null_callback : error code 0x35
syncrepl_updateCookie: rid=001 be_modify failed (53)

on the consumer:
slap_queue_csn: queing 0xd8e3a30 20091014205621.868761Z#000000#001#000000
slap_graduate_commit_csn: removing 0xd8e3b00 20091014205621.868761Z#000000#001#000000
conn=0 op=42 do_modify: root dse!

This seems to be a problem with ``searchbase=""'' (in ``syncrepl'').
If it is changed to ``searchbase="dc=com"'' (and matching ``suffix
"dc=com"'' for ``database ldap'') the error does not occur.

Is it possible to achieve what we want using some other options?
It might not be as soon as some internal searches rooted at <searchbase> with scope "base" need to be performed, because in this case they would actually return the rootDSE instead of the context entry of the database you're trying to replicate. This is a mere speculation, I haven't looked at the code yet. 

p.