[Samba] winbind use default domain problem after upgrade
perttu.aaltonen at mac.com
Thu Mar 4 13:56:11 UTC 2021
> On 3 Mar 2021, at 18.49, Rowland penny via samba <samba at lists.samba.org> wrote:
> On 03/03/2021 16:10, Perttu Aaltonen via samba wrote:
>> After upgrading a file server from Ubuntu 19.10 with Samba 4.10.5 to Ubuntu 20.04 with Samba 4.13.2, "winbind use default domain” doesn’t seem to work anymore.
>> I went through the release notes in between but nothing stood out for me that would require a configuration change.
>> Before the upgrade:
>> [2021/02/23 20:05:31.553745, 3] ../../auth/auth_log.c:629(log_authentication_event_human_readable)
>> Auth: [SMB,(null)] user \[user] at [Tue, 23 Feb 2021 20:05:31.553731 EET] with [NTLMv1] status [NT_STATUS_OK] workstation [192.168.0.11] remote host [ipv4:192.168.0.11:53784] became [DOMAIN]\[user] [SID redacted]. local host [ipv4:192.168.0.10:445]
>> After the upgrade:
>> [2021/02/23 20:19:04.581131, 2] ../../auth/auth_log.c:635(log_authentication_event_human_readable)
>> Auth: [SMB,(null)] user \[user] at [Tue, 23 Feb 2021 20:19:04.581108 EET] with [NTLMv1] status [NT_STATUS_NO_SUCH_USER] workstation [192.168.0.11] remote host [ipv4:192.168.0.11:49792] mapped to \[user]. local host [ipv4:192.168.0.12:445]
>> Do I need to change something in the configuration or have I hit some kind of bug?
> Strange, it works for myself (not that it helps you)
> Can you give us a bit more info, What is the AD DC ?
> Why are you still using SMBv1 ?
> Please post your smb.conf
The DC is still an old Samba 4.1.9 in Debian 7. We are waiting for either a decision to upgrade it or move to a cloud DC, in which case we will just decommission it. Has been working fine though up until now. It’s just a user directory, nothing fancy like GPO.
SMBv1 is for certain legacy clients, like the Supermicro IPMI virtual media where I ran into this problem in the first place. I asked Supermicro support if they have any fixes for this in newer firmware releases, but they just replied that it’s not tested or supported with Samba. Their web UI doesn’t even allow the \ character so it’s not possible to include the domain in the user name.
The config is below. Some of it is from a previous admin so might include redundant or unnecessary options for current releases.
# Global parameters
allow trusted domains = No
dns proxy = No
domain master = No
load printers = No
local master = No
log file = /var/log/samba/log.%m
map to guest = Bad User
max log size = 1000
pam password change = Yes
passwd chat = *Enter\snew\s*\spassword:* %n\n *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
passwd program = /usr/bin/passwd %u
preferred master = No
realm = DOMAIN.COM
security = ADS
server min protocol = NT1
server string = %h server (Samba, Ubuntu)
syslog = 0
template homedir = /home/%U
template shell = /bin/sh
unix extensions = No
unix password sync = Yes
winbind enum groups = Yes
winbind enum users = Yes
winbind offline logon = Yes
winbind refresh tickets = Yes
winbind use default domain = Yes
workgroup = DOMAIN
rpc_server:mdssvc = embedded
streams_xattr:store_stream_type = no
streams_xattr:prefix = user.
fruit:delete_empty_adfiles = yes
fruit:wipe_intentionally_left_blank_rfork = yes
fruit:zero_file_id = yes
fruit:posix_rename = yes
fruit:veto_appledouble = yes
fruit:model = Xserve
fruit:locking = netatalk
fruit:encoding = native
fruit:metadata = netatalk
fruit:resource = file
fruit:copyfile = yes
fruit:nfs_aces = no
readdir_attr:aapl_max_access = yes
readdir_attr:aapl_finder_info = yes
readdir_attr:aapl_rsize = yes
fruit:aapl = yes
idmap config DOMAIN: range = 20000-20000000
idmap config *:range = 90000000-100000000
idmap config DOMAIN: backend = rid
idmap config * : backend = tdb
access based share enum = Yes
delete veto files = Yes
inherit permissions = Yes
strict locking = No
use sendfile = Yes
veto oplock files = /.*rvt/
vfs objects = catia fruit streams_xattr
path = /zpool/shares/SERVER
read only = No
More information about the samba