** Description changed: Guys, I'm facing this problem too: https://lists.samba.org/archive/samba/2013-March/172230.html NOTE: I just posted this message on Samba maillist but, this seems to be a BUG, so, I'm opening it here too. + --- + The problem is: - The problem is: samba-tool must use IPv6 ONLY IF the machine have IPv6. + * samba-tool must use IPv6 ONLY IF the machine have IPv6. + * samba-tool must be able to join a IPv4-Only Secondary DC, into a Dual-Stacked "Samba4 AC DC". + --- - - I have two Samba4 AC DC, in both located in my office, dual-stacked, working like a charm. + I have two Samba4 AC DC, in both located in my office, dual-stacked, + working like a charm. Now, I need to deploy a third DC, located within Amazon EC2, which does NOT have IPv6. But, samba-tool fails to join. How can I workaround this, without enabling a tunneled IPv6 within my EC2 ? Exemplifying: 1- ubuntu-ad-1 - Master - ok - office LAN1 - IPv4 / IPv6 2- ubuntu-ad-2 - Slave - ok - office LAN2 - IPv4 / IPv6 3- ubuntu-ad-3 - Slave can't join - AWS - IPv4-Only --- root@ubuntu-ad-3:~# kinit administrator - Password for administra...@central.domain.com.br: + Password for administra...@central.domain.com.br: Warning: Your password will expire in 40 days on Thu 28 Aug 2014 05:56:10 PM UTC --- --- root@ubuntu-ad-3:~# samba-tool domain join central.domain.com.br DC -Uadministrator --realm=CENTRAL.DOMAIN.COM.BR --dns-backend=BIND9_DLZ Finding a writeable DC for domain 'central.domain.com.br' ERROR(exception): uncaught exception - Failed to find a writeable DC for domain 'central.domain.com.br' - File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 175, in _run - return self.run(*args, **kwargs) - File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 552, in run - machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend) - File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1150, in join_DC - machinepass, use_ntvfs, dns_backend, promote_existing) - File "/usr/lib/python2.7/dist-packages/samba/join.py", line 76, in __init__ - ctx.server = ctx.find_dc(domain) - File "/usr/lib/python2.7/dist-packages/samba/join.py", line 262, in find_dc - raise Exception("Failed to find a writeable DC for domain '%s'" % domain) + File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 175, in _run + return self.run(*args, **kwargs) + File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 552, in run + machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend) + File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1150, in join_DC + machinepass, use_ntvfs, dns_backend, promote_existing) + File "/usr/lib/python2.7/dist-packages/samba/join.py", line 76, in __init__ + ctx.server = ctx.find_dc(domain) + File "/usr/lib/python2.7/dist-packages/samba/join.py", line 262, in find_dc + raise Exception("Failed to find a writeable DC for domain '%s'" % domain) --- Debugging it with `strace`, I'm seeing: --- strace -f -e trace=network samba-tool domain join CENTRAL.DOMAIN.COM.BR DC -Uadministrator --realm=CENTRAL.DOMAIN.COM.BR --dns-backend=BIND9_DLZ ..... [pid 1533] +++ killed by SIGKILL +++ --- SIGCHLD {si_signo=SIGCHLD, si_code=CLD_KILLED, si_pid=1533, si_status=SIGKILL, si_utime=0, si_stime=0} --- socket(PF_INET6, SOCK_DGRAM, IPPROTO_IP) = 5 setsockopt(5, SOL_IPV6, IPV6_V6ONLY, [1], 4) = 0 connect(5, {sa_family=AF_INET6, sin6_port=htons(389), inet_pton(AF_INET6, "2001:1291:XXX:85Xa::66XX", &sin6_addr), sin6_flowinfo=0, sin6_scope_id=0}, 28) = -1 ENETUNREACH (Network is unreachable) ERROR(exception): uncaught exception - Failed to find a writeable DC for domain 'CENTRAL.DOMAIN.COM.BR' - File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 175, in _run - return self.run(*args, **kwargs) - File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 552, in run - machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend) - File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1150, in join_DC - machinepass, use_ntvfs, dns_backend, promote_existing) - File "/usr/lib/python2.7/dist-packages/samba/join.py", line 76, in __init__ - ctx.server = ctx.find_dc(domain) - File "/usr/lib/python2.7/dist-packages/samba/join.py", line 262, in find_dc - raise Exception("Failed to find a writeable DC for domain '%s'" % domain) + File "/usr/lib/python2.7/dist-packages/samba/netcmd/__init__.py", line 175, in _run + return self.run(*args, **kwargs) + File "/usr/lib/python2.7/dist-packages/samba/netcmd/domain.py", line 552, in run + machinepass=machinepass, use_ntvfs=use_ntvfs, dns_backend=dns_backend) + File "/usr/lib/python2.7/dist-packages/samba/join.py", line 1150, in join_DC + machinepass, use_ntvfs, dns_backend, promote_existing) + File "/usr/lib/python2.7/dist-packages/samba/join.py", line 76, in __init__ + ctx.server = ctx.find_dc(domain) + File "/usr/lib/python2.7/dist-packages/samba/join.py", line 262, in find_dc + raise Exception("Failed to find a writeable DC for domain '%s'" % domain) +++ exited with 255 +++ --- So, how can I force samba-tool to use IPv4? Since ubuntu-ad-3 doesn't have IPv6... Thanks! Thiago
-- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to samba in Ubuntu. https://bugs.launchpad.net/bugs/1344400 Title: samba-tool tries to use IPv6 for Secondary DC, even if host doesn't have it, but Primary DC have IPv6 (Dual-Stacked). To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/samba/+bug/1344400/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs
