[Samba] samba pdc winbind
Rowland Penny
rowlandpenny at googlemail.com
Wed Feb 11 13:18:57 MST 2015
On 11/02/15 20:13, duportail wrote:
> Op woensdag 11 februari 2015 19:56:54 schreef Rowland Penny:
>> On 11/02/15 19:25, duportail wrote:
>>> Op woensdag 11 februari 2015 19:09:48 schreef Rowland Penny:
>>>> On 11/02/15 18:29, duportail wrote:
>>>>> ( could not post complete reply, message too large?)
>>>>>
>>>>>
>>>>> I think that's why I have a lot of black screens on the clients.
>>>>> Here debian pdc smb.conf:
>>>>> root at fai:~# cat /etc/samba/smb.conf
>>>>> # This is the main Samba configuration file. You should read the
>>>>> # smb.conf(5) manual page in order to understand the options listed
>>>>> # here. Samba has a huge number of configurable options (perhaps too
>>>>> # many!) most of which are not shown in this example
>>>>> #
>>>>> # For a step to step guide on installing, configuring and using samba,
>>>>> # read the Samba-HOWTO-Collection. This may be obtained from:
>>>>> # http://www.samba.org/samba/docs/Samba-HOWTO-Collection.pdf
>>>>> #
>>>>> # Many working examples of smb.conf files can be found in the
>>>>> # Samba-Guide which is generated daily and can be downloaded from:
>>>>> # http://www.samba.org/samba/docs/Samba-Guide.pdf
>>>>> #
>>>>> # Any line which starts with a ; (semi-colon) or a # (hash)
>>>>> # is a comment and is ignored. In this example we will use a #
>>>>> # for commentry and a ; for parts of the config file that you
>>>>> # may wish to enable
>>>>> #
>>>>> # NOTE: Whenever you modify this file you should run the command "testparm"
>>>>> # to check that you have not made any basic syntactic errors.
>>>>> #
>>>>> #======================= Global Settings =====================================
>>>>> [global]
>>>>>
>>>>> # workgroup = NT-Domain-Name or Workgroup-Name, eg: MIDEARTH
>>>>> workgroup = fai
>>>>>
>>>>> # server string is the equivalent of the NT Description field
>>>>> server string = Samba Server
>>>>>
>>>>> # Security mode. Defines in which mode Samba will operate. Possible
>>>>> # values are share, user, server, domain and ads. Most people will want
>>>>> # user level security. See the Samba-HOWTO-Collection for details.
>>>>> security = user
>>>>>
>>>>> # This option is important for security. It allows you to restrict
>>>>> # connections to machines which are on your local network. The
>>>>> # following example restricts access to two C class networks and
>>>>> # the "loopback" interface. For more examples of the syntax see
>>>>> # the smb.conf man page
>>>>> ; hosts allow = 192.168.1. 192.168.2. 127.
>>>>>
>>>>> # If you want to automatically load your printer list rather
>>>>> # than setting them up individually then you'll need this
>>>>> load printers = yes
>>>>>
>>>>> # you may wish to override the location of the printcap file
>>>>> ; printcap name = /etc/printcap
>>>>>
>>>>> # on SystemV system setting printcap name to lpstat should allow
>>>>> # you to automatically obtain a printer list from the SystemV spool
>>>>> # system
>>>>> ; printcap name = lpstat
>>>>>
>>>>> # It should not be necessary to specify the print system type unless
>>>>> # it is non-standard. Currently supported print systems include:
>>>>> # bsd, cups, sysv, plp, lprng, aix, hpux, qnx
>>>>> ; printing = cups
>>>>>
>>>>> # Uncomment this if you want a guest account, you must add this to /etc/passwd
>>>>> # otherwise the user "nobody" is used
>>>>> ; guest account = pcguest
>>>>>
>>>>> # this tells Samba to use a separate log file for each machine
>>>>> # that connects
>>>>> log file = /var/log/samba/log.%m
>>>>>
>>>>> # Put a capping on the size of the log files (in Kb).
>>>>> max log size = 50
>>>>>
>>>>> # Use password server option only with security = server
>>>>> # The argument list may include:
>>>>> # password server = My_PDC_Name [My_BDC_Name] [My_Next_BDC_Name]
>>>>> # or to auto-locate the domain controller/s
>>>>> # password server = *
>>>>> ; password server = <NT-Server-Name>
>>>>>
>>>>> # Use the realm option only with security = ads
>>>>> # Specifies the Active Directory realm the host is part of
>>>>> ; realm = MY_REALM
>>>>>
>>>>> # Backend to store user information in. New installations should
>>>>> # use either tdbsam or ldapsam. smbpasswd is available for backwards
>>>>> # compatibility. tdbsam requires no further configuration.
>>>>> passdb backend = tdbsam
>>>>>
>>>>> # Using the following line enables you to customise your configuration
>>>>> # on a per machine basis. The %m gets replaced with the netbios name
>>>>> # of the machine that is connecting.
>>>>> # Note: Consider carefully the location in the configuration file of
>>>>> # this line. The included file is read at that point.
>>>>> ; include = /usr/local/samba/lib/smb.conf.%m
>>>>>
>>>>> # Configure Samba to use multiple interfaces
>>>>> # If you have multiple network interfaces then you must list them
>>>>> # here. See the man page for details.
>>>>> # interfaces = 192.168.12.2/24 192.168.5.2/24
>>>>>
>>>>> # Browser Control Options:
>>>>> # set local master to no if you don't want Samba to become a master
>>>>> # browser on your network. Otherwise the normal election rules apply
>>>>> ; local master = no
>>>>>
>>>>> # OS Level determines the precedence of this server in master browser
>>>>> # elections. The default value should be reasonable
>>>>> ; os level = 33
>>>>>
>>>>> # Domain Master specifies Samba to be the Domain Master Browser. This
>>>>> # allows Samba to collate browse lists between subnets. Don't use this
>>>>> # if you already have a Windows NT domain controller doing this job
>>>>> domain master = yes
>>>>>
>>>>> # Preferred Master causes Samba to force a local browser election on startup
>>>>> # and gives it a slightly higher chance of winning the election
>>>>> preferred master = yes
>>>>>
>>>>> # Enable this if you want Samba to be a domain logon server for
>>>>> # Windows95 workstations.
>>>>> domain logons = yes
>>>>>
>>>>> # if you enable domain logons then you may want a per-machine or
>>>>> # per user logon script
>>>>> # run a specific logon batch file per workstation (machine)
>>>>> logon script = %m.bat
>>>>> # run a specific logon batch file per username
>>>>> logon script = %U.bat
>>>>>
>>>>> # Where to store roving profiles (only for Win95 and WinNT)
>>>>> # %L substitutes for this servers netbios name, %U is username
>>>>> # You must uncomment the [Profiles] share below
>>>>> logon path = \\%L\Profiles\%U
>>>>>
>>>>> # Windows Internet Name Serving Support Section:
>>>>> # WINS Support - Tells the NMBD component of Samba to enable it's WINS Server
>>>>> ; wins support = yes
>>>>>
>>>>> # WINS Server - Tells the NMBD components of Samba to be a WINS Client
>>>>> # Note: Samba can be either a WINS Server, or a WINS Client, but NOT both
>>>>> ; wins server = 192.168.5.1
>>>>>
>>>>> # WINS Proxy - Tells Samba to answer name resolution queries on
>>>>> # behalf of a non WINS capable client, for this to work there must be
>>>>> # at least one WINS Server on the network. The default is NO.
>>>>> wins proxy = yes
>>>>>
>>>>> # DNS Proxy - tells Samba whether or not to try to resolve NetBIOS names
>>>>> # via DNS nslookups. The default is NO.
>>>>> dns proxy = no
>>>>>
>>>>> # These scripts are used on a domain controller or stand-alone
>>>>> # machine to add or delete corresponding unix accounts
>>>>> add user script = /usr/sbin/useradd %u
>>>>> add group script = /usr/sbin/groupadd %g
>>>>> add machine script = /usr/sbin/useradd -N -g machines -c Machine -d /var/lib/samba -s /bin/false %u
>>>>> delete user script = /usr/sbin/userdel %u
>>>>> delete user from group script = /usr/sbin/deluser %u %g
>>>>> delete group script = /usr/sbin/groupdel %g
>>>>>
>>>>>
>>>>> #============================ Share Definitions ==============================
>>>>> [homes]
>>>>> comment = Home Directories
>>>>> browseable = yes
>>>>> read only = no
>>>>> guest ok = yes
>>>>> create mask = 0700
>>>>> directory mask = 0700
>>>>> valid users = %S
>>>>> invalid users = root
>>>>> # Un-comment the following and create the netlogon directory for Domain Logons
>>>>> [netlogon]
>>>>> comment = Network Logon Service
>>>>> path = /usr/local/samba/lib/netlogon
>>>>> guest ok = yes
>>>>> writable = no
>>>>> #share modes = yes
>>>>>
>>>>>
>>>>> # Un-comment the following to provide a specific roving profile share
>>>>> # the default is to use the user's home directory
>>>>> ;[Profiles]
>>>>> ; path = /usr/local/samba/profiles
>>>>> ; browseable = no
>>>>> ; guest ok = yes
>>>>>
>>>>>
>>>>> # NOTE: If you have a BSD-style print system there is no need to
>>>>> # specifically define each individual printer
>>>>> [printers]
>>>>> comment = All Printers
>>>>> path = /usr/spool/samba
>>>>> browseable = no
>>>>> # Set public = yes to allow user 'guest account' to print
>>>>> guest ok = no
>>>>> writable = no
>>>>> printable = yes
>>>>>
>>>>> # This one is useful for people to share files
>>>>> ;[tmp]
>>>>> ; comment = Temporary file space
>>>>> ; path = /tmp
>>>>> ; read only = no
>>>>> ; public = yes
>>>>>
>>>>> # A publicly accessible directory, but read only, except for people in
>>>>> # the "staff" group
>>>>> ;[public]
>>>>> ; comment = Public Stuff
>>>>> ; path = /home/samba
>>>>> ; public = yes
>>>>> ; writable = no
>>>>> ; printable = no
>>>>> ; write list = @staff
>>>>>
>>>>> # Other examples.
>>>>> #
>>>>> # A private printer, usable only by fred. Spool data will be placed in fred's
>>>>> # home directory. Note that fred must have write access to the spool directory,
>>>>> # wherever it is.
>>>>> ;[fredsprn]
>>>>> ; comment = Fred's Printer
>>>>> ; valid users = fred
>>>>> ; path = /homes/fred
>>>>> ; printer = freds_printer
>>>>> ; public = no
>>>>> ; writable = no
>>>>> ; printable = yes
>>>>>
>>>>> # A private directory, usable only by fred. Note that fred requires write
>>>>> # access to the directory.
>>>>> ;[fredsdir]
>>>>> ; comment = Fred's Service
>>>>> ; path = /usr/somewhere/private
>>>>> ; valid users = fred
>>>>> ; public = no
>>>>> ; writable = yes
>>>>> ; printable = no
>>>>>
>>>>> # a service which has a different directory for each machine that connects
>>>>> # this allows you to tailor configurations to incoming machines. You could
>>>>> # also use the %U option to tailor it by user name.
>>>>> # The %m gets replaced with the machine name that is connecting.
>>>>> ;[pchome]
>>>>> ; comment = PC Directories
>>>>> ; path = /usr/pc/%m
>>>>> ; public = no
>>>>> ; writable = yes
>>>>>
>>>>> # A publicly accessible directory, read/write to all users. Note that all files
>>>>> # created in the directory by users will be owned by the default user, so
>>>>> # any user with access can delete any other user's files. Obviously this
>>>>> # directory must be writable by the default user. Another user could of course
>>>>> # be specified, in which case all files would be owned by that user instead.
>>>>> ;[public]
>>>>> ; path = /usr/somewhere/else/public
>>>>> ; public = yes
>>>>> ; only guest = yes
>>>>> ; writable = yes
>>>>> ; printable = no
>>>>>
>>>>> # The following two entries demonstrate how to share a directory so that two
>>>>> # users can place files there that will be owned by the specific users. In this
>>>>> # setup, the directory should be writable by both users and should have the
>>>>> # sticky bit set on it to prevent abuse. Obviously this could be extended to
>>>>> # as many users as required.
>>>>> ;[myshare]
>>>>> ; comment = Mary's and Fred's stuff
>>>>> ; path = /usr/somewhere/shared
>>>>> ; valid users = mary fred
>>>>> ; public = no
>>>>> ; writable = yes
>>>>> ; printable = no
>>>>> ; create mask = 0765
>>>>>
>>>>>
>>>> OK, after wading through the commented lines, I end up with:
>>>>
>>>> PDC smb.conf:
>>>>
>>>> [global]
>>>> workgroup = fai
>>>> server string = Samba Server
>>>> security = user
>>>> load printers = yes
>>>> log file = /var/log/samba/log.%m
>>>> max log size = 50
>>>> passdb backend = tdbsam
>>>> domain master = yes
>>>> preferred master = yes
>>>> domain logons = yes
>>>> logon script = %m.bat
>>>> logon script = %U.bat
>>>> logon path = \\%L\Profiles\%U
>>>> wins proxy = yes
>>>> dns proxy = no
>>>> add user script = /usr/sbin/useradd %u
>>>> add group script = /usr/sbin/groupadd %g
>>>> add machine script = /usr/sbin/useradd -N -g machines -c Machine -d
>>>> /var/lib/samba -s /bin/false %u
>>>> delete user script = /usr/sbin/userdel %u
>>>> delete user from group script = /usr/sbin/deluser %u %g
>>>> delete group script = /usr/sbin/groupdel %g
>>>>
>>>> [homes]
>>>> comment = Home Directories
>>>> browseable = yes
>>>> read only = no
>>>> guest ok = yes
>>>> create mask = 0700
>>>> directory mask = 0700
>>>> valid users = %S
>>>> invalid users = root
>>>>
>>>> [netlogon]
>>>> comment = Network Logon Service
>>>> path = /usr/local/samba/lib/netlogon
>>>> guest ok = yes
>>>> writable = no
>>>>
>>>> [printers]
>>>> comment = All Printers
>>>> path = /usr/spool/samba
>>>> browseable = no
>>>> guest ok = no
>>>> writable = no
>>>> printable = yes
>>>>
>>>>
>>>> Client smb.conf
>>>>
>>>> [global]
>>>> workgroup = fai
>>>> server string = %h server (Samba, Ubuntu)
>>>> wins server = 172.20.68.14
>>>> winbind separator = /
>>>> winbind use default domain = Yes
>>>> dns proxy = no
>>>> winbind uid = 10000-20000
>>>> winbind gid = 10000-20000
>>>> template shell = /bin/bash
>>>> allow trusted domains = yes
>>>> name resolve order = lmhosts host wins bcast
>>>> name resolve order = wins lmhosts host bcast
>>>> log file = /var/log/samba/log.%m
>>>> max log size = 1000
>>>> syslog = 0
>>>> panic action = /usr/share/samba/panic-action %d
>>>> security = domain
>>>> password server = 172.20.68.14
>>>> encrypt passwords = true
>>>> passdb backend = tdbsam
>>>> obey pam restrictions = yes
>>>> unix password sync = yes
>>>> passwd program = /usr/bin/passwd %u
>>>> passwd chat = *Enter\snew\s*\spassword:* %n\n
>>>> *Retype\snew\s*\spassword:* %n\n *password\supdated\ssuccessfully* .
>>>> pam password change = yes
>>>> map to guest = bad user
>>>> add user script = /usr/sbin/adduser --quiet --disabled-password
>>>> --gecos "" %u
>>>> add machine script = /usr/sbin/useradd -g machines -c "%u machine
>>>> account" -d /var/lib/samba -s /bin/false %u
>>>> add group script = /usr/sbin/addgroup --force-badname %g
>>>> socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
>>>> template shell = /bin/bash
>>>> template homedir = /home/%U
>>>> usershare allow guests = yes
>>>>
>>>> #======================= Share Definitions =======================
>>>>
>>>> valid users = %S
>>>>
>>>> [printers]
>>>> comment = All Printers
>>>> browseable = no
>>>> path = /var/spool/samba
>>>> printable = yes
>>>> guest ok = no
>>>> read only = yes
>>>> create mask = 0700
>>>>
>>>> [print$]
>>>> comment = Printer Drivers
>>>> path = /var/lib/samba/printers
>>>> browseable = yes
>>>> read only = yes
>>>> guest ok = no
>>>>
>>>> There are a few lines that are duplicated in each smb.conf.
>>>>
>>>> I take it that you only use the PDC for authentication and don't let the
>>>> users login.
>>>>
>>>> It has been sometime since I setup and used a linux client with a PDC,
>>>> but I don't actually remember having all those passwd & script lines in
>>>> the client smb.conf.
>>>>
>>>> Do the users exist as unix users on both machines ?
>>>>
>>>> Rowland
>>>>
>>> No, the users are created on the debian pdc. that is the long number (as their username).
>>> Than the users can login on a joined ubuntu computer in the classroom. It does not matter which one.
>>> The long number (as their username) comes from a smartcard).
>>> I have this setup in many schools, and working ok. But on this setup, with the long numbers as usernames, i have problems.
>>> As I was debugging, i tried to su the user on a client machine, and got another user instead:
>>> root at blank005:~# su 59031614949
>>> 98121524292 at blank005:/root$
>>>
>>> I never seen this .
>>> Is it a problem with long usernames and winbind?
>>>
>>>
>>>
>>>
>>>
>> Well, the portion of the logfile you posted is full of lines like this:
>>
>> Failed to find a Unix account for 92101633919
>>
>> OK, just what part of that line do you not understand ?? :-)
>>
>> You need a unix user for '92101633919'
>>
>> Rowland
>>
> Correct, but there was this user:
>
> on debian pdc:
> root at fai:~# cat /var/log/auth.log | grep 92101633919
> Feb 10 14:54:51 fai useradd[9507]: new group: name=92101633919, GID=1209
> Feb 10 14:54:51 fai useradd[9507]: new user: name=92101633919, UID=1209, GID=1209, home=/home/92101633919, shell=/bin/sh
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'audio'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'dip'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'video'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'plugdev'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'fuse'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'pulse'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to group 'pulse-access'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'audio'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'dip'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'video'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'plugdev'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'fuse'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'pulse'
> Feb 10 14:54:51 fai useradd[9507]: add '92101633919' to shadow group 'pulse-access'
>
OK, is '92101633919' in /etc/passwd on the pdc and does 'getent passwd
92101633919' return anything ?
If they both are true, then you may have run into this bug:
https://bugzilla.samba.org/show_bug.cgi?id=11044
Rowland
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