[Samba] samba pdc winbind

[duportail]

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?