Ad controller cant be installed on master (backup has it already) /var/lib/samba/private/sam.ldb not found

On UCS4.4.6 our slave and backup already have the AD Controller installed for the app store.
The master should get the package as well (and the current backup should remove the ad controller in te future)

After the installation was complete from the app store (web interface) there were 3 pending join.scripts, so i executed “univention-run-join-scripts”


univention-run-join-scripts started
So 22. Nov 15:01:42 CET 2020

univention-join-hooks: looking for hook type "join/pre-joinscripts" on master.bbc.local
Found hooks:
  
RUNNING 01univention-ldap-server-init.inst
EXITCODE=already_executed
RUNNING 02univention-directory-notifier.inst
EXITCODE=already_executed
RUNNING 03univention-directory-listener.inst
EXITCODE=already_executed
RUNNING 04univention-ldap-client.inst
EXITCODE=already_executed
RUNNING 05univention-bind.inst
EXITCODE=already_executed
RUNNING 08univention-apache.inst
EXITCODE=already_executed
RUNNING 10univention-ldap-server.inst
EXITCODE=already_executed
RUNNING 11univention-heimdal-init.inst
EXITCODE=already_executed
RUNNING 11univention-pam.inst
EXITCODE=already_executed
RUNNING 15univention-directory-notifier-post.inst
EXITCODE=already_executed
RUNNING 15univention-heimdal-kdc.inst
EXITCODE=already_executed
RUNNING 18python-univention-directory-manager.inst
EXITCODE=already_executed
RUNNING 20univention-directory-policy.inst
EXITCODE=already_executed
RUNNING 20univention-join.inst
EXITCODE=already_executed
RUNNING 20univention-ldap-config-master.inst
EXITCODE=already_executed
RUNNING 22univention-directory-manager-rest.inst
EXITCODE=already_executed
RUNNING 26univention-nagios-common.inst
EXITCODE=already_executed
RUNNING 30univention-appcenter.inst
EXITCODE=already_executed
RUNNING 30univention-nagios-client.inst
EXITCODE=already_executed
RUNNING 31univention-nagios-s4-connector.inst
EXITCODE=already_executed
RUNNING 31univention-nagios-samba.inst
EXITCODE=already_executed
RUNNING 33univention-portal.inst
EXITCODE=already_executed
RUNNING 34univention-management-console-server.inst
EXITCODE=already_executed
RUNNING 34univention-self-service.inst
EXITCODE=already_executed
RUNNING 35univention-appcenter-docker.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-appcenter.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-diagnostic.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-ipchange.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-join.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-lib.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-mrtg.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-quota.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-reboot.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-services.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-setup.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-sysinfo.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-top.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-ucr.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-udm.inst
EXITCODE=already_executed
RUNNING 35univention-management-console-module-updater.inst
EXITCODE=already_executed
RUNNING 35univention-self-service-master.inst
EXITCODE=already_executed
RUNNING 35univention-self-service-passwordreset-umc.inst
EXITCODE=already_executed
RUNNING 35univention-server-overview.inst
EXITCODE=already_executed
RUNNING 36univention-management-console-module-apps.inst
EXITCODE=already_executed
RUNNING 40univention-postgresql.inst
EXITCODE=already_executed
RUNNING 40univention-virtual-machine-manager-schema.inst
EXITCODE=already_executed
RUNNING 78univention-kde.inst
EXITCODE=already_executed
RUNNING 81univention-nfs-server.inst
EXITCODE=already_executed
RUNNING 90univention-bind-post.inst
EXITCODE=already_executed
RUNNING 91univention-saml.inst
EXITCODE=already_executed
RUNNING 92univention-management-console-web-server.inst
EXITCODE=already_executed
RUNNING 96univention-samba4.inst
2020-11-22 15:01:46.195093203+01:00 (in joinscript_init)
22.11.20 15:01:46.780  DEBUG_INIT
UNIVENTION_DEBUG_BEGIN  : uldap.__open host=master.bbc.local port=7389 base=dc=bbc,dc=local
UNIVENTION_DEBUG_END    : uldap.__open host=master.bbc.local port=7389 base=dc=bbc,dc=local
Not updating samba4/role
Restarting univention-directory-listener (via systemctl): univention-directory-listener.service.
Multifile: /etc/samba/smb.conf
Object exists: cn=Builtin,dc=bbc,dc=local
WARNING: cannot append cn=DC Backup Hosts,cn=groups,dc=bbc,dc=local to nestedGroup, value exists
No modification: cn=Enterprise Domain Controllers,cn=groups,dc=bbc,dc=local
WARNING: cannot append cn=master,cn=dc,cn=computers,dc=bbc,dc=local to hosts, value exists
No modification: cn=Enterprise Domain Controllers,cn=groups,dc=bbc,dc=local
Stopping samba-ad-dc (via systemctl): samba-ad-dc.service.
Stopping smbd (via systemctl): smbd.service.
Stopping nmbd (via systemctl): nmbd.service.
Setting kerberos/kdc
Setting kerberos/kpasswdserver
File: /etc/krb5.conf
Setting slapd/port
File: /etc/init.d/slapd
Multifile: /etc/ldap/slapd.conf
Setting slapd/port/ldaps
File: /etc/init.d/slapd
Multifile: /etc/ldap/slapd.conf
Restarting slapd (via systemctl): slapd.serviceWarning: slapd.service changed on disk. Run 'systemctl daemon-reload' to reload units.
.
Administrative credentials are needed to join to existing Samba4 domain. Please run:
	univention-run-join-scripts --ask-pass
to complete the domain join.
EXITCODE=1
137426f6-3664-4eb6-b275-16c1c5647bf5
RUNNING 97univention-s4-connector.inst
EXITCODE=already_executed
RUNNING 98univention-pkgdb-tools.inst
EXITCODE=already_executed
RUNNING 98univention-samba4-dns.inst
2020-11-22 15:02:25.013320446+01:00 (in joinscript_init)
Samba4 backend database not available yet, exiting joinscript 98univention-samba4-dns.
EXITCODE=1
1dd2cb49-a08f-4cb3-b6f2-809978aa94ef
RUNNING 98univention-samba4-saml-kerberos.inst
2020-11-22 15:02:25.884930594+01:00 (in joinscript_init)
ltdb: tdb(/var/lib/samba/private/secrets.ldb): tdb_open_ex: could not open file /var/lib/samba/private/secrets.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/secrets.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/secrets.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/secrets.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/secrets.ldb - Unable to open tdb '/var/lib/samba/private/secrets.ldb': No such file or directory
Waiting for user replication...
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to /var/lib/samba/private/sam.ldb - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ltdb: tdb(/var/lib/samba/private/sam.ldb): tdb_open_ex: could not open file /var/lib/samba/private/sam.ldb: No such file or directory

Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
Failed to connect to '/var/lib/samba/private/sam.ldb' with backend 'tdb': Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
ERROR(ldb): uncaught exception - Unable to open tdb '/var/lib/samba/private/sam.ldb': No such file or directory
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 185, in _run
    return self.run(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/samba/netcmd/spn.py", line 96, in run
    credentials=creds, lp=lp)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 67, in __init__
    options=options)
  File "/usr/lib/python2.7/dist-packages/samba/__init__.py", line 115, in __init__
    self.connect(url, flags, options)
  File "/usr/lib/python2.7/dist-packages/samba/samdb.py", line 82, in connect
    options=options)
EXITCODE=1
0b27d068-1d7d-4de5-b83d-e9efc913447f
univention-join-hooks: looking for hook type "join/post-joinscripts" on master.bbc.local
Found hooks:
  

I am not sure if the problem is that the backup already have the AD Controller or if we are facing another issue here. At the end i want to archive that the current master will get the AD and the current backup will lose its AD feature.