[Samba] samba pdc winbind

duportail guy at duportail.be
Wed Feb 11 13:34:27 MST 2015


Op woensdag 11 februari 2015 20:18:57 schreef Rowland Penny:
> 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
> 
> 
> 
no, getent passwd 92101633919 gave nothing.

It(s debian wheezy with:
root at fai:~# smbd --version
Version 3.6.6

part of the script that create the user:
script to extract username from eid smartcard:
beid-tool -a -w
wait
username=`eidenv --exec /usr/local/sbin/eid.sh |tr '[A-Z]' '[a-z]' | sed 's/ //g'| sed 's/[àâä]/a/g; s/[ÀÂÄ]/A/g; s/[éèêë]/e/g; s/[ÉÈÊË]/E/g; s/[îï]/i/g; s/[ÎÏ]/$
pass=`cat /dev/urandom| tr -dc a-z | head -c4`
password=`cat /dev/urandom| tr -dc a-z | head -c4`
surftijd=60


goes to another script:
/usr/local/sbin/addunixsambaeid.sh $username $password $surftijd

part of that script to create user:
if [ $(id -u) -eq 0 ]; then
username=$1
password=$2
surftijd=$3     
          if  getent passwd | grep -w "$username" 
then
zenity --warning --text="gebruiker bestaat al"
                exit 0
        else
                pass=$(perl -e 'print crypt($ARGV[0], "password")' $password)
                /usr/sbin/useradd -m -p $pass $username
(echo $password; echo $password ) | smbpasswd -s -a  $username






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