[Samba] Error Message while joining a Domain as a DC

[Ulrich Schneider]

I joined an existing domain according to:
https://wiki.samba.org/index.php/Samba4/HOWTO/Join_a_domain_as_a_DC

My  var/log.samba shows the following error message ... and 
unfortunately ... I have no idea what that means.

[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:48:00,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:58:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:58:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:58:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 20:58:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: tkey query failed: GSSAPI 
error: Major = Unspecified GSS failure.  Minor code may provide more 
information, Minor = Server not found in Kerberos database.
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: Traceback (most recent call last):
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate:   File 
"/usr/local/samba/sbin/samba_dnsupdate", line 506, in <module>
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate:     get_credentials(lp)
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate:   File 
"/usr/local/samba/sbin/samba_dnsupdate", line 119, in get_credentials
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate:     creds.get_named_ccache(lp, 
ccachename)
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate: RuntimeError: kinit for 
SERVERT$@GYM-FEU.LOCAL failed (Cannot contact any KDC for requested realm)
[2013/05/29 21:08:01,  0] 
../lib/util/util_runcmd.c:334(samba_runcmd_io_handler)
   /usr/local/samba/sbin/samba_dnsupdate:
ulrich at servert:/usr/local/samba$