[Samba] classic upgrade issue from samba 4.20

Arnaud FLORENT aflorent at iris-tech.fr
Thu Jan 2 15:58:09 UTC 2025


Hi and happy new year everyone


i am testing classic upgrade with recent samba versions

everything is ok until version 4.19


but for samba version 4.20 (4.20.6+dfsg-1~~mjt+ubt22 amd64) and 4.21, it 
fails with this message


Failed to connect to 'ldap://localhost' with backend 'ldap': operations 
error at lib/ldb-samba/ldb_ildap.c:923


my smb.conf settings are

passdb backend = ldapsam:ldap://localhost

ldap ssl = off

and ldap admin dn, and ldap * suffix parameters matching slapd db



slapd is running and responds to ldapsearch queries


i tried to read upgrade_from_samba3 code in 
/usr/lib/python3/dist-packages/samba/upgrade.py but i did not see change 
from 4.19.

is there any updates on samba-tool connect to slapd from version 4.20?



classic upgrade log:

Ready to run classic upgrade....
  INFO 2025-01-02 16:43:44,634 pid:101882 /usr/lib/python3/dist-packages/samba/netcmd/domain/classicupgrade.py #183: Reading smb.conf
  INFO 2025-01-02 16:43:44,634 pid:101882 /usr/lib/python3/dist-packages/samba/netcmd/domain/classicupgrade.py #187: Provisioning
  INFO 2025-01-02 16:43:44,639 pid:101882 /usr/lib/python3/dist-packages/samba/upgrade.py #504: Exporting account policy
  INFO 2025-01-02 16:43:44,648 pid:101882 /usr/lib/python3/dist-packages/samba/upgrade.py #508: Exporting groups
  INFO 2025-01-02 16:43:44,649 pid:101882 /usr/lib/python3/dist-packages/samba/upgrade.py #554: Exporting users
  INFO 2025-01-02 16:43:44,654 pid:101882 /usr/lib/python3/dist-packages/samba/upgrade.py #635: Next rid = 3006
  Failed to connect to 'ldap://localhost' with backend 'ldap': operations error at lib/ldb-samba/ldb_ildap.c:923
  ERROR(<class 'samba.provision.ProvisioningError'>): uncaught exception - ProvisioningError: Could not open ldb connection to ldap://localhost, the error message is: (1, 'operations error at lib/ldb-samba/ldb_ildap.c:923')
    File "/usr/lib/python3/dist-packages/samba/netcmd/__init__.py", line 285, in _run
      return self.run(*args, **kwargs)
    File "/usr/lib/python3/dist-packages/samba/netcmd/domain/classicupgrade.py", line 188, in run
      upgrade_from_samba3(samba3, logger, targetdir, session_info=system_session(),
    File "/usr/lib/python3/dist-packages/samba/upgrade.py", line 675, in upgrade_from_samba3
      raise ProvisioningError("Could not open ldb connection to %s, the error message is: %s" % (url, e))


-- 
Arnaud FLORENT
IRIS Technologies




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