Attention moderators: could any of you show the images and links I reference below on my post?, I was able to put a maximum of 2 images/links because I’m a new user. After that you can remove this text. Thanks.
I successfully installed Univention UCS 4.2.
On this UCS 4.2 server I have installed the following applications / plugins:
- Active Directory Connection
- Active Directory Takeover
- Active Directory-compatible Domain Controller
- DHCP server
- Print server (CUPS)
I have the following Linux distribution:
root@ucs:~# cat /etc/*-release
DISTRIB_ID=Univention
DISTRIB_RELEASE="4.2-2 errata159"
DISTRIB_CODENAME=Lesum
DISTRIB_DESCRIPTION="Univention Corporate Server 4.2-2 errata159 (Lesum)"
PRETTY_NAME="Debian GNU/Linux 8 (jessie)"
NAME="Debian GNU/Linux"
VERSION_ID="8"
VERSION="8 (jessie)"
ID=debian
HOME_URL="http://www.debian.org/"
SUPPORT_URL="http://www.debian.org/support"
BUG_REPORT_URL="https://bugs.debian.org/"
and the following Samba version:
root@ucs:~# samba -V
Version 4.6.1-Debian
This UCS 4.2 server is running on IP: 10.16.100.115.
On another IP: 10.16.100.20 I have Microsoft Windows Server 2008 R2 (64-bit) let’s call it: Win 2008 which acts as: Active Directory Domain Controller.
The UCS 4.2 server is working properly as DNS server. In addition of that, if on a whatever Windows PC on the local network I point to it as DNS server like on the following image:
I can add that Windows PC to the domain by using the following credentials:
Domain: mydomain.intranet
User name: Administrator
Password: <thepassword>
Then, my next step was trying to migrate the Active Directory I had on Win 2008 to UCS 4.2. For that I used the application: Active Directory Takeover via the web interface:
When click Next I get:
[image] i.stack.imgur. com/kIW6O.png
When click Next I get:
[image] i.stack.imgur. com/iZSX6.png
Then, I check that file referenced on the image above:
/var/log/univention/ad-takeover.log
and I find the following content:
2017-09-12 16:35:25,671 INFO: Time difference is less than 180 seconds, skipping reset of local time
2017-09-12 16:35:25,688 Starting phase I of the takeover process.
2017-09-12 16:35:25,688 Calling: univention-config-registry set hosts/static/10.16.100.20=DLDC.MYDOMAIN.intranet DLDC
2017-09-12 16:35:25,791 Create hosts/static/10.16.100.20
2017-09-12 16:35:25,791 Multifile: /etc/hosts
2017-09-12 16:35:25,798 Calling: /etc/init.d/univention-s4-connector stop
2017-09-12 16:35:25,818 Stopping univention-s4-connector (via systemctl): univention-s4-connector.service.
2017-09-12 16:35:25,818 Calling: /etc/init.d/samba-ad-dc stop
2017-09-12 16:35:25,993 Stopping samba-ad-dc (via systemctl): samba-ad-dc.service.
2017-09-12 16:35:25,994 Calling: univention-config-registry set nameserver1/local=10.16.100.115 nameserver1=10.16.100.20 directory/manager/web/modules/users/user/properties/username/syntax=string directory/manager/web/modules/groups/group/properties/name/syntax=string dns/backend=ldap
2017-09-12 16:35:26,082 Create nameserver1/local
2017-09-12 16:35:26,082 Setting nameserver1
2017-09-12 16:35:26,082 Setting directory/manager/web/modules/users/user/properties/username/syntax
2017-09-12 16:35:26,082 Setting directory/manager/web/modules/groups/group/properties/name/syntax
2017-09-12 16:35:26,082 Setting dns/backend
2017-09-12 16:35:26,082 File: /etc/resolv.conf
2017-09-12 16:35:26,090 Calling: /etc/init.d/nscd stop
2017-09-12 16:35:26,113 Stopping nscd (via systemctl): nscd.service.
2017-09-12 16:35:26,114 Calling: /etc/init.d/bind9 restart
2017-09-12 16:35:31,603 Restarting bind9 (via systemctl): bind9.service.
2017-09-12 16:35:31,603 Starting Samba domain join.
2017-09-12 16:35:31,885 GENSEC backend 'gssapi_spnego' registered
2017-09-12 16:35:31,885 GENSEC backend 'gssapi_krb5' registered
2017-09-12 16:35:31,885 GENSEC backend 'gssapi_krb5_sasl' registered
2017-09-12 16:35:31,885 GENSEC backend 'spnego' registered
2017-09-12 16:35:31,885 GENSEC backend 'schannel' registered
2017-09-12 16:35:31,885 GENSEC backend 'naclrpc_as_system' registered
2017-09-12 16:35:31,885 GENSEC backend 'sasl-EXTERNAL' registered
2017-09-12 16:35:31,885 GENSEC backend 'ntlmssp' registered
2017-09-12 16:35:31,885 GENSEC backend 'ntlmssp_resume_ccache' registered
2017-09-12 16:35:31,886 GENSEC backend 'http_basic' registered
2017-09-12 16:35:31,886 GENSEC backend 'http_ntlm' registered
2017-09-12 16:35:31,886 GENSEC backend 'krb5' registered
2017-09-12 16:35:31,886 GENSEC backend 'fake_gssapi_krb5' registered
2017-09-12 16:35:31,908 resolve_lmhosts: Attempting lmhosts lookup for name DLDC.MYDOMAIN.intranet<0x20>
2017-09-12 16:35:31,914 Error reading smb_krb5 reply packet: NT_STATUS_CONNECTION_REFUSED from 127.0.0.1
2017-09-12 16:35:31,914 Error reading smb_krb5 reply packet: NT_STATUS_CONNECTION_REFUSED from 127.0.0.1
2017-09-12 16:35:31,914 Error reading smb_krb5 reply packet: NT_STATUS_CONNECTION_REFUSED from 127.0.0.1
2017-09-12 16:35:31,914 Cannot reach a KDC we require to contact ldap/DLDC.MYDOMAIN.intranet@MYDOMAIN.INTRANET : kinit for myuser@MYDOMAIN.INTRANET failed (Cannot contact any KDC for requested realm)
2017-09-12 16:35:31,915 SPNEGO(gssapi_krb5) creating NEG_TOKEN_INIT for ldap/DLDC.MYDOMAIN.intranet failed (next[ntlmssp]): NT_STATUS_NO_LOGON_SERVERS
2017-09-12 16:35:31,915 Got challenge flags:
2017-09-12 16:35:31,915 Got NTLMSSP neg_flags=0x62898235
2017-09-12 16:35:31,915 NTLMSSP: Set final flags:
2017-09-12 16:35:31,915 Got NTLMSSP neg_flags=0x62088235
2017-09-12 16:35:31,915 NTLMSSP Sign/Seal - Initialising with flags:
2017-09-12 16:35:31,915 Got NTLMSSP neg_flags=0x62088235
2017-09-12 16:35:31,916 NTLMSSP Sign/Seal - Initialising with flags:
2017-09-12 16:35:31,916 Got NTLMSSP neg_flags=0x62088235
2017-09-12 16:35:31,926 workgroup is MYDOMAIN
2017-09-12 16:35:31,926 realm is MYDOMAIN.intranet
2017-09-12 16:35:31,940 tdb(/var/lib/samba/private/secrets.tdb): tdb_open_ex: could not open file /var/lib/samba/private/secrets.tdb: No such file or directory
2017-09-12 16:35:31,940 Could not open tdb: No such file or directory
2017-09-12 16:35:31,944 ldb_wrap open of secrets.ldb
2017-09-12 16:35:31,944 Could not find machine account in secrets database: Failed to fetch machine account password from secrets.ldb: Could not find entry to match filter: '(&(flatname=MYDOMAIN)(objectclass=primaryDomain))' base: 'cn=Primary Domains': No such object: dsdb_search at ../source4/dsdb/common/util.c:4576 and failed to open /var/lib/samba/private/secrets.tdb: NT_STATUS_CANT_ACCESS_DOMAIN_INFO
2017-09-12 16:35:31,994 ERROR(ldb): uncaught exception - LDAP error 68 LDAP_ENTRY_ALREADY_EXISTS - <00002071: UpdErr: DSID-03050328, problem 6005 (ENTRY_EXISTS), data 0
2017-09-12 16:35:31,994 > <>
2017-09-12 16:35:31,995 File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 176, in _run
2017-09-12 16:35:31,995 return self.run(*args, **kwargs)
2017-09-12 16:35:31,995 File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 668, in run
2017-09-12 16:35:31,995 keep_existing=keep_existing)
2017-09-12 16:35:31,995 File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1276, in join_DC
2017-09-12 16:35:31,996 ctx.do_join()
2017-09-12 16:35:31,996 File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1182, in do_join
2017-09-12 16:35:31,996 ctx.join_add_objects()
2017-09-12 16:35:31,996 File "/usr/lib/python2.7/dist-packages/samba/join.py", line 613, in join_add_objects
2017-09-12 16:35:31,996 ctx.samdb.add(rec)
2017-09-12 16:35:31,996 Adding CN=CONTROLLER,OU=Domain Controllers,DC=MYDOMAIN,DC=intranet
2017-09-12 16:35:31,996 Adding CN=CONTROLLER,CN=Servers,CN=Default-First-Site-Name,CN=Sites,CN=Configuration,DC=MYDOMAIN,DC=intranet
2017-09-12 16:35:31,996 Join failed - cleaning up
2017-09-12 16:35:31,996 removing samaccount: CN=CONTROLLER,OU=Domain Controllers,DC=MYDOMAIN,DC=intranet
2017-09-12 16:35:31,996 Deleted CN=CONTROLLER,OU=Domain Controllers,DC=MYDOMAIN,DC=intranet
2017-09-12 16:35:32,017 Calling: univention-config-registry unset hosts/static/10.16.100.20
2017-09-12 16:35:32,126 Unsetting hosts/static/10.16.100.20
2017-09-12 16:35:32,126 Multifile: /etc/hosts
2017-09-12 16:35:32,131 Calling: /etc/init.d/samba-ad-dc start
2017-09-12 16:35:32,452 Starting samba-ad-dc (via systemctl): samba-ad-dc.service.
2017-09-12 16:35:32,452 Calling: /etc/init.d/univention-s4-connector start
2017-09-12 16:35:37,699 Starting univention-s4-connector (via systemctl): univention-s4-connector.service.
2017-09-12 16:35:37,699 Calling: univention-config-registry set nameserver1=10.16.100.115
2017-09-12 16:35:37,895 Setting nameserver1
2017-09-12 16:35:37,895 File: /etc/resolv.conf
2017-09-12 16:35:37,902 Calling: univention-config-registry unset nameserver1/local
2017-09-12 16:35:38,029 Unsetting nameserver1/local
2017-09-12 16:35:38,029 File: /etc/resolv.conf
2017-09-12 16:35:38,034 Calling: univention-config-registry set dns/backend=samba4
2017-09-12 16:35:38,098 Setting dns/backend
2017-09-12 16:35:38,102 Calling: /etc/init.d/bind9 restart
2017-09-12 16:35:48,642 Restarting bind9 (via systemctl): bind9.service.
2017-09-12 16:35:48,642 Calling: /etc/init.d/nscd restart
2017-09-12 16:35:48,736 Restarting nscd (via systemctl): nscd.service.
2017-09-12 16:35:48,736 The domain join failed. See /var/log/univention/ad-takeover.log for details.
where there are some lines that catch my attention:
2017-09-12 16:35:31,914 Error reading smb_krb5 reply packet: NT_STATUS_CONNECTION_REFUSED from 127.0.0.1
2017-09-12 16:35:31,914 Error reading smb_krb5 reply packet: NT_STATUS_CONNECTION_REFUSED from 127.0.0.1
2017-09-12 16:35:31,914 Error reading smb_krb5 reply packet: NT_STATUS_CONNECTION_REFUSED from 127.0.0.1
2017-09-12 16:35:31,914 Cannot reach a KDC we require to contact ldap/DLDC.MYDOMAIN.intranet@MYDOMAIN.INTRANET : kinit for myuser@MYDOMAIN.INTRANET failed (Cannot contact any KDC for requested realm)
Then, checking the samba configuration file: /etc/samba/smb.conf I see the following fragment:
[global]
debug level = 1
logging = file
log file = /var/log/samba/log.%m
log level = 3
max log size = 0
netbios name = controller
server role = active directory domain controller
server string = Univention Corporate Server
server services = -dns -smb +s3fs -nbt
server role check:inhibit = yes
# use nmbd; to disable set samba4/service/nmb to s4
nmbd_proxy_logon:cldap_server=127.0.0.1
workgroup = LAGOON
realm = LAGOON.LOCAL
tls enabled = yes
tls keyfile = /etc/univention/ssl/controller.lagoon.local/private.key
tls certfile = /etc/univention/ssl/controller.lagoon.local/cert.pem
tls cafile = /etc/univention/ssl/ucsCA/CAcert.pem
tls verify peer = ca_and_name
ldap server require strong auth = allow_sasl_over_tls
dsdb:schema update allowed = no
max open files = 32808
ntlm auth = yes
machine password timeout = 0
acl allow execute always = True
# ignore interfaces in samba/register/exclude/interfaces
bind interfaces only = yes
interfaces = lo eth0
kccsrv:samba_kcc = False
where there is another line that catch my attention:
nmbd_proxy_logon:cldap_server=127.0.0.1
Notice the same 127.0.0.1 as on the error log.
Other details:
- on
Win 2008server I was using the domain:MYDOMAIN.intranet - on
UCS 4.2server I was using the domain:mydomain.intranet
After the failed takeover process I checked the list of users on UCS 4.2 server and there was no imported users from the Win 2008 server (same users as before).
Just as a Memo, I have to say that for some reason, after doing the above, when trying to use the previous server: Win 2008 as local domain and then try to login I got the following error:
The security database on the server does not have a computer account for this workstation trust relationship.
[image] i.stack.imgur. com/EzbCG.png
But I solved this by following the steps on the following link:
[link] virtualcurtis.wordpress. com/2011/03/02/fix-the-security-database-on-the-server-does-not-have-a-computer-account-for-this-workstation-trust-relationship/
[Checks]
root@controller:~# ls -la /var/lib/samba/private/secrets.tdb
-rw------- 1 root root 430080 Sep 11 16:08 /var/lib/samba/private/secrets.tdb
Any idea on how to make the takeover process go thru?