[Samba] samba pdc winbind

duportail guy at duportail.be
Wed Feb 11 13:22:20 MST 2015


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
> 
And just now deleted this user (strange that the auth.log file has wrong date ,,,)
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'
Feb 10 14:54:52 fai chfn[9515]: changed user '92101633919' information
Feb 10 23:00:02 fai userdel[18092]: delete user '92101633919'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'audio'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'dip'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'video'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'plugdev'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'fuse'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'pulse'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from group 'pulse-access'
Feb 10 23:00:02 fai userdel[18092]: removed group '92101633919' owned by '92101633919'
Feb 10 23:00:02 fai userdel[18092]: removed shadow group '92101633919' owned by '92101633919'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'audio'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'dip'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'video'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'plugdev'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'fuse'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'pulse'
Feb 10 23:00:02 fai userdel[18092]: delete '92101633919' from shadow group 'pulse-access'
root at fai:~# date
wo feb 11 21:18:13 CET 2015
root at fai:~# cat /var/log/samba/log.blank005 | grep 92101633919
  Failed to find a Unix account for 92101633919Failed to find a Unix account for 92101633919Failed to find a Unix account for 92101633919Failed to find a Unix account for 92101633919get_user_info_21: User 92101633919 has Primary Group SID (NULL SID), 
  Failed to find a Unix account for 92101633919Failed to find a Unix account for 92101633919Failed to find a Unix account for 92101633919get_user_info_21: User 92101633919 has Primary Group SID (NULL SID), 
root at fai:~# 



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