[Samba] using ldap only idmap

Mariano Absatz el.baby at gmail.com
Thu Oct 15 13:58:05 MDT 2009


I'm trying to make a "pure ldap" setup, whereas users, groups, id 
mappings and everything that is supported with LDAP be in the LDAP tree 
and managed directly by samba.

That is, I'm using:

ldapsam:trusted = yes
ldapsam:editposix = yes

And NOT using smbldap-*.

My smb.conf is here: http://wiki.clueless.com.ar/SambaLdap/smb.conf-PDC

I created the LDAP tree root (o=midominio) and all its branches 
(ou=people; ou=groups; ou= hosts and ou=idmap).

I ran "net sam provision" to fill in the basic values.

I stored the secrets in secrets.tdb:
# smbpasswd -w ldap_admin_password
# net idmap secret midominio ldap_admin_password
# net idmap secret alloc ldap_admin_password

I was able to join a samba server to the domain (net rpc join -S 
miserver -UAdministrator).

However, when I try to join an XP host to the domain, I get an error 
(IIRC it's "An attached device is not functionning") in the workstation 
and the samba logs show the following:

[2009/10/15 11:17:47,  0] passdb/pdb_ldap.c:ldapsam_create_user(5119)
  ldapsam_create_user: Unable to allocate a new user id: bailing out!

The user I'm using to bind to the LDAP server is the LDAP administrator 
and it does have permissions on all the tree (in particular, within 

I manually added an entry for the workstation's account posix data, then 
issued "smbpasswd -a workstation$"

THEN I could join the domain...

Clearly, I have something misconfigured regarding ldap/idmap/alloc, but 
I can't find enough information to do it right.

Any help REALLY appreciated...

Mariano Absatz - "El Baby"
el.baby at gmail.com

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