[Samba] Workgroup Domain

[Denis Cardon]

Hi Dominic,
>
> Wondering if anyone can help with a weird issue I'm having -
>
> Just set up a new server (RHEL 7.4) and have migrated my samba
> configuration from my old server (Fedora 25), I'm experiencing an issue
> where by if my the name of my workgroup a domain i.e. it has a period in
> it, then none of my Linux clients can detect the broadcast and smbtree on
> both client and server is completely empty. I can manually connect via
> domain, hostname, ip etc...

from [1] : "[NetBIOS domain] names can contain a period (.). However, 
the name cannot start with a period. The use of non-DNS names with 
periods is allowed in Microsoft Windows NT. However, periods should not 
be used in Active Directory domains. If you are upgrading a domain whose 
NetBIOS name contains a period, change the name by migrating the domain 
to a new domain structure. *Do not use periods in new NetBIOS domain 
names*."


So, if MS tells you specifically "Do not use", then I'd say it may be 
logic to not use it with Samba either... I've done quite a few NT4 to 
Samba AD migration which had dotted netbios domain name in the past, I 
know it does mostly work, but it is really not a good idea. It prevents 
standard migration path to AD, and you'll have some subtle bugs to deals 
with.

Cheers,

Denis


[1] 
https://support.microsoft.com/en-us/help/909264/naming-conventions-in-active-directory-for-computers-domains-sites-and


>
> If I take this further and run smbtree -d4, then I can see that it's
> complaining about not being able to determine the master browser for
> WORKGROUP.COM <http://workgroup.com/>. In Windows however everything works
> fine, the server pops up almost instantaneously.
>
> The domain is propagated through dns and all clients can resolve the domain
> name no problem. If I change the samba workgroup to something that isn't a
> domain name, then everything works again and it's correctly displaying in
> smbtree on all clients and server.
>
> I don't get it - can someone advise?
>
> smb.conf:
> [global]
>  server string = host01-name01
>  workgroup = workgroup.com
>  netbios name = host01-name01
>  bind interfaces only = yes
>  interfaces = lo enp4s0 enp0s31f6
>  hosts allow = 192.168.150.
>  name resolve order = wins bcast
>  security = user
>  passdb backend = tdbsam
>  encrypt passwords = true
>  domain master = yes
>  preferred master = yes
>  local master = yes
>  browseable = yes
>  deadtime = 15
>  dns proxy = no
>  getwd cache = yes
>  load printers = no
>  mangled names = no
>  map archive = no
>  map to guest = never
>  min receivefile size = 16384
>  os level = 255
>  printable = no
>  printcap name = /dev/null
>  read raw = yes
>  unix extensions = yes
>  use sendfile = yes
>  wins support = yes
>  write raw = yes
>  writeable = yes
>  logging = file
>  log file = /var/log/samba/log.%m
>  max log size = 50
>  shadow: snapdir = .zfs/snapshot
>  shadow: snapdirseverywhere = yes
>  shadow: format = autosnap_%Y-%m-%d_%H:%M:%S_hourly
>  shadow: localtime = yes
>
> Kind Regards,
> Dominic
>

-- 
Denis Cardon
Tranquil IT Systems
Les Espaces Jules Verne, bâtiment A
12 avenue Jules Verne
44230 Saint Sébastien sur Loire
tel : +33 (0) 2.40.97.57.55
http://www.tranquil-it-systems.fr