Greg Scott
2005-Apr-03 03:59 UTC
[Samba] Smbd 3.0.13 dies when smb.conf has winbind separator = \
I am trying to get windind to work so my domain users can touch shares on this Linux box without being prompted for credentials. I put these in nsswitch.conf: passwd: files winbind group: files winbind Then I did this: cp /usr/src/samba-3.0.13/source/nsswitch/libnss_winbind.so /lib ln --symbolic /lib/libnss_windbind.so /lib/libnss_winbind.so.2 Make libnss_windbind available to winbindd like this: /sbin/ldconfig -v | grep winbind mkdir /var/log/samba I fire up the daemons like this: /usr/local/samba/sbin/nmbd /usr/local/samba/sbin/smbd /usr/local/samba/sbin/winbindd And ps -ax | grep smbd shows smbd is not running. After hours and hours of troubleshooting, I found if I change this line in /usr/local/samba/lib/smb.conf: winbind separator = \ To this (note the hashmark - commented out): #winbind separator = \ Smbd does not die. However, it also seems to not want to call winbind to authenticate my domain users. I am using Samba 3.0.13, built from source, with MIT Kervberos 1.4, also built from source, on RedHat Linux 9.0. My A/D domain is Windows 2003. I started up smbd with -d 10 (debug level 10) with and without that line commented out, so I have these debug traces with and without. I would really appreciate any advice from the community. Thanks - Greg Scott GregScott@InfraSupportEtc.com Here are the last few lines of the log file with that separator line in place in smb.conf, just before smbd dies: [root@infra-fw samba]# cd /var/log/samba [root@infra-fw samba]# tail log.smbd [2005/04/02 21:21:13, 3] smbd/sec_ctx.c:pop_sec_ctx(386) pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0 [2005/04/02 21:21:13, 10] auth/auth_util.c:get_user_groups(714) get_user_groups: winbind_getgroups(nobody): result = FAIL [2005/04/02 21:21:13, 4] auth/auth_util.c:add_user_groups(796) get_user_groups_from_local_sam failed [2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406) attempting to free (and zero) a server_info structure [2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406) attempting to free (and zero) a server_info structure [root@infra-fw samba]# Here is the global section of smb.conf (Although I built from source, I started with the smb.conf packaged in the RPM. Yes, I removed the RPM (rpm -e) before building from source. I can't use the RPM because I need to authenticate with a Win2003 domain and the version of Kerberos packaged with RH9.0 doesn't work.) [root@infra-fw lib]# cd /usr/local/samba/lib [root@infra-fw lib]# cat 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 # # 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 workgroup = infrasupportetc netbios name = SQUIDTEST realm = INFRASUPPORTETC.COM # server string is the equivalent of the NT Description field server string = Greg squidtest Samba Server # 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 printcap name = /etc/printcap load printers = yes # It should not be necessary to spell out the print system type unless # yours is non-standard. Currently supported print systems include: # bsd, sysv, plp, lprng, aix, hpux, qnx ; printing = bsd # 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/%m.log # all log information in one file log file = /var/log/samba/log.smbd # Put a capping on the size of the log files (in Kb). max log size = 50 # Security mode. Most people will want user level security. See # security_level.txt for details. security = ADS # Use password server option only with security = server ; password server = 10.10.10.100 # Password Level allows matching of _n_ characters of the password for # all combinations of upper and lower case. ; password level = 8 ; username level = 8 # You may wish to use password encryption. Please read # ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation. # Do not enable this option unless you have read those documents ; encrypt passwords = yes ; smb passwd file = /etc/samba/smbpasswd encrypt passwords = yes # idmap uid and idmap gid are aliases for # winbind uid and winbid gid, respectively idmap uid = 10000-20000 idmap gid = 10000-20000 winbind enum users = yes winbind enum groups = yes template shell = /bin/bash winbind use default domain = Yes winbind nested groups = Yes winbind separator = \ # The following are needed to allow password changing from Windows to # update the Linux system password also. # NOTE: Use these with 'encrypt passwords' and 'smb passwd file' above. # NOTE2: You do NOT need these to allow workstations to change only # the encrypted SMB passwords. They allow the Unix password # to be kept in sync with the SMB password. ; unix password sync = Yes ; passwd program = /usr/bin/passwd %u ; passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password* %n\n *passwd:*all*authentication*tokens*updated*successfully* # Unix users can map to different SMB User names ; username map = /etc/samba/smbusers # 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 ; include = /etc/samba/smb.conf.%m # Most people will find that this option gives better performance. # See speed.txt and the manual pages for details socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 # 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 = 192.168.12.2/24 192.168.13.2/24 interfaces = 10.10.10.2 # Configure remote browse list synchronisation here # request announcement to, or browse list sync from: # a specific host or from / to a whole subnet (see below) ; remote browse sync = 192.168.3.25 192.168.5.255 # Cause this host to announce itself to local subnets here ; remote announce = 192.168.1.255 192.168.2.44 # 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 # All NetBIOS names must be resolved to IP Addresses # 'Name Resolve Order' allows the named resolution mechanism to be specified # the default order is "host lmhosts wins bcast". "host" means use the unix # system gethostbyname() function call that will use either /etc/hosts OR # DNS or NIS depending on the settings of /etc/host.config, /etc/nsswitch.conf # and the /etc/resolv.conf file. "host" therefore is system configuration # dependant. This parameter is most often of use to prevent DNS lookups # in order to resolve NetBIOS names to IP Addresses. Use with care! # The example below excludes use of name resolution for machines that are NOT # on the local network segment # - OR - are not deliberately to be known via lmhosts or via WINS. ; name resolve order = wins lmhosts bcast # 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 = w.x.y.z # 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 built-in default for versions 1.9.17 is yes, # this has been changed in version 1.9.18 to no. dns proxy = no # Case Preservation can be handy - system default is _no_ # NOTE: These can be set on a per share basis ; preserve case = no ; short preserve case = no # Default case is normally upper case for all DOS files ; default case = lower # Be very careful with case sensitivity - it can break things! ; case sensitive = no (Share definitions snipped)
Greg Scott
2005-Apr-03 06:54 UTC
[Samba] RE: Smbd 3.0.13 dies when smb.conf has winbind separator = \
It occurred to me that "\" character is also a linux line continuation
character. This realization spawned some experiments:
These variations:
Domain separator =\
Domain separator= \
Domain separator=\
Domain separator = "\"
All gave the same result:
[root@infra-fw lib]# /usr/local/samba/bin/testparm
Load smb config files from /usr/local/samba/lib/smb.conf
Processing section "[homes]"
Processing section "[printers]"
Processing section "[gregshare]"
Loaded services file OK.
ERROR: the 'winbind separator' parameter must be a single character.
Server role: ROLE_DOMAIN_MEMBER
Press enter to see a dump of your service definitions
But I noticed there was a blank line after this line. So I tried this:
Domain separator = \
#
That got rid of the syntax error - but the testparm dump said the
separator character was a # (hash sign). It needs to be a backslash.
All kinds of other tests yielded similar goofy results. In my O'reilly
book, "Using Samba", page 317 says the backslash character is the
default, so maybe I don't need that line anyway. So I got rid of it.
This means example 22.5.1 in section 22.5.3.3 of Samba-HOWTO-Collection
must be wrong.
What's really making me nuts is, why won't smbd call winbindd to go look
up stuff in my AD domain?
I can run ntlm_auth by hand. If I pass it a valid domain\username
password, it returns OK. And if I pass it a bogus one, it returns ERR.
When I run
/usr/local/samba/bin/wbinfo -u
it returns all my AD usernames like this: DOMAIN\user.
So it looks like winbindd is working. But when I run getent passwd, all
that comes back are the entries from my local passwd file. If I'm
reading the documentation correctly, it's supposed to also return my A/D
entries, right? (nsswitch.conf and libraries noted below.) So winbindd
seems to be doing its job, smbd is just not calling it. Could this be
related to the backslash character issue or is this a dead-end?
Here is some more strange behavior, trying to follow the instructions in
22.5.3.1 of the HOWTO-Collection:
[root@infra-fw lib]#
[root@infra-fw lib]# ln --symbolic libnss_windbind.so
libnss_winbind.so.2
[root@infra-fw lib]# ls -la /lib | grep winbind
-rwxr-xr-x 1 root root 305094 Apr 2 20:21
libnss_winbind.so
lrwxrwxrwx 1 root root 18 Apr 3 00:45
libnss_winbind.so.2 -> libnss_windbind.so
[root@infra-fw lib]#
[root@infra-fw lib]# /sbin/ldconfig -v | grep winbind
/sbin/ldconfig: Cannot stat /lib/libnss_winbind.so.2: No such file or
directory
libnss_winbind.so -> libnss_winbind.so
[root@infra-fw lib]#
[root@infra-fw lib]# ls -la /lib | grep winbind
-rwxr-xr-x 1 root root 305094 Apr 2 20:21
libnss_winbind.so
[root@infra-fw lib]#
Note that ldconfig got rid of that symbolic link the HOWTO suggested
putting in. I have to believe the messed up linkage between smbd and
winbindd are related somehow to this.
Here is the dump of my current smb.conf, without all the ugly comments:
[root@infra-fw lib]# /usr/local/samba/bin/testparm
Load smb config files from /usr/local/samba/lib/smb.conf
Processing section "[homes]"
Processing section "[printers]"
Processing section "[gregshare]"
Loaded services file OK.
Server role: ROLE_DOMAIN_MEMBER
Press enter to see a dump of your service definitions
# Global parameters
[global]
workgroup = INFRASUPPORTETC
realm = INFRASUPPORTETC.COM
server string = Greg squidtest Samba Server
interfaces = 10.10.10.2
security = ADS
log file = /var/log/samba/log.smbd
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = No
idmap uid = 10000-20000
idmap gid = 10000-20000
[homes]
comment = Home Directories
read only = No
browseable = No
[printers]
comment = All Printers
path = /var/spool/samba
printable = Yes
browseable = No
[gregshare]
comment = Greg's stuff
path = /home/gregs
valid users = "@INFRASUPPORTETC\Domain Users"
read only = No
guest ok = Yes
[root@infra-fw lib]#
- Greg Scott
GregScott@InfraSupportEtc.com
> _____________________________________________
> From: Greg Scott
> Sent: Saturday, April 02, 2005 9:58 PM
> To: 'samba@lists.samba.org'
> Cc: 'Fredy Hernandez'; 'Scott Anderson'
> Subject: Smbd 3.0.13 dies when smb.conf has winbind separator = \
>
> I am trying to get windind to work so my domain users can touch shares
> on this Linux box without being prompted for credentials. I put
> these in nsswitch.conf:
>
> passwd: files winbind
> group: files winbind
>
> Then I did this:
>
> cp /usr/src/samba-3.0.13/source/nsswitch/libnss_winbind.so /lib
> ln --symbolic /lib/libnss_windbind.so /lib/libnss_winbind.so.2
>
> Make libnss_windbind available to winbindd like this:
> /sbin/ldconfig -v | grep winbind
>
> mkdir /var/log/samba
>
> I fire up the daemons like this:
>
> /usr/local/samba/sbin/nmbd
> /usr/local/samba/sbin/smbd
> /usr/local/samba/sbin/winbindd
>
> And ps -ax | grep smbd shows smbd is not running.
>
> After hours and hours of troubleshooting, I found if I change this
> line in /usr/local/samba/lib/smb.conf:
> winbind separator = \
>
> To this (note the hashmark - commented out):
> #winbind separator = \
>
> Smbd does not die. However, it also seems to not want to call winbind
> to authenticate my domain users.
>
> I am using Samba 3.0.13, built from source, with MIT Kervberos 1.4,
> also built from source, on RedHat Linux 9.0. My A/D domain is
> Windows 2003.
>
> I started up smbd with -d 10 (debug level 10) with and without that
> line commented out, so I have these debug traces with and without.
>
> I would really appreciate any advice from the community.
>
> Thanks
>
> - Greg Scott
> GregScott@InfraSupportEtc.com
>
> Here are the last few lines of the log file with that separator line
> in place in smb.conf, just before smbd dies:
>
> [root@infra-fw samba]# cd /var/log/samba
> [root@infra-fw samba]# tail log.smbd
> [2005/04/02 21:21:13, 3] smbd/sec_ctx.c:pop_sec_ctx(386)
> pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2005/04/02 21:21:13, 10] auth/auth_util.c:get_user_groups(714)
> get_user_groups: winbind_getgroups(nobody): result = FAIL
> [2005/04/02 21:21:13, 4] auth/auth_util.c:add_user_groups(796)
> get_user_groups_from_local_sam failed
> [2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406)
> attempting to free (and zero) a server_info structure
> [2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406)
> attempting to free (and zero) a server_info structure
> [root@infra-fw samba]#
>
> Here is the global section of smb.conf (Although I built from source,
> I started with the smb.conf packaged in the RPM. Yes, I removed the
> RPM (rpm -e) before building from source. I can't use the RPM because
> I need to authenticate with a Win2003 domain and the version of
> Kerberos packaged with RH9.0 doesn't work.)
>
> [root@infra-fw lib]# cd /usr/local/samba/lib
> [root@infra-fw lib]# cat 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
> #
> # 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
> workgroup = infrasupportetc
> netbios name = SQUIDTEST
> realm = INFRASUPPORTETC.COM
>
> # server string is the equivalent of the NT Description field
> server string = Greg squidtest Samba Server
>
> # 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
> printcap name = /etc/printcap
> load printers = yes
>
> # It should not be necessary to spell out the print system type unless
> # yours is non-standard. Currently supported print systems include:
> # bsd, sysv, plp, lprng, aix, hpux, qnx
> ; printing = bsd
>
> # 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/%m.log
> # all log information in one file
> log file = /var/log/samba/log.smbd
>
> # Put a capping on the size of the log files (in Kb).
> max log size = 50
>
> # Security mode. Most people will want user level security. See
> # security_level.txt for details.
> security = ADS
> # Use password server option only with security = server
>
> ; password server = 10.10.10.100
>
> # Password Level allows matching of _n_ characters of the password for
> # all combinations of upper and lower case.
> ; password level = 8
> ; username level = 8
>
> # You may wish to use password encryption. Please read
> # ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation.
> # Do not enable this option unless you have read those documents
> ; encrypt passwords = yes
> ; smb passwd file = /etc/samba/smbpasswd
>
> encrypt passwords = yes
>
> # idmap uid and idmap gid are aliases for
> # winbind uid and winbid gid, respectively
> idmap uid = 10000-20000
> idmap gid = 10000-20000
> winbind enum users = yes
> winbind enum groups = yes
>
> template shell = /bin/bash
> winbind use default domain = Yes
> winbind nested groups = Yes
> winbind separator = \
>
> # The following are needed to allow password changing from Windows to
> # update the Linux system password also.
> # NOTE: Use these with 'encrypt passwords' and 'smb passwd
file'
> above.
> # NOTE2: You do NOT need these to allow workstations to change only
> # the encrypted SMB passwords. They allow the Unix password
> # to be kept in sync with the SMB password.
> ; unix password sync = Yes
> ; passwd program = /usr/bin/passwd %u
> ; passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password*
> %n\n *passwd:*all*authentication*tokens*updated*successfully*
>
> # Unix users can map to different SMB User names
> ; username map = /etc/samba/smbusers
>
> # 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
> ; include = /etc/samba/smb.conf.%m
>
> # Most people will find that this option gives better performance.
> # See speed.txt and the manual pages for details
> socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
>
> # 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 = 192.168.12.2/24 192.168.13.2/24
>
> interfaces = 10.10.10.2
>
> # Configure remote browse list synchronisation here
> # request announcement to, or browse list sync from:
> # a specific host or from / to a whole subnet (see below)
> ; remote browse sync = 192.168.3.25 192.168.5.255
> # Cause this host to announce itself to local subnets here
> ; remote announce = 192.168.1.255 192.168.2.44
>
> # 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
>
> # All NetBIOS names must be resolved to IP Addresses
> # 'Name Resolve Order' allows the named resolution mechanism to be
> specified
> # the default order is "host lmhosts wins bcast".
"host" means use the
> unix
> # system gethostbyname() function call that will use either /etc/hosts
> OR
> # DNS or NIS depending on the settings of /etc/host.config,
> /etc/nsswitch.conf
> # and the /etc/resolv.conf file. "host" therefore is system
> configuration
> # dependant. This parameter is most often of use to prevent DNS
> lookups
> # in order to resolve NetBIOS names to IP Addresses. Use with care!
> # The example below excludes use of name resolution for machines that
> are NOT
> # on the local network segment
> # - OR - are not deliberately to be known via lmhosts or via WINS.
> ; name resolve order = wins lmhosts bcast
>
> # 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 = w.x.y.z
>
> # 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 built-in default for versions 1.9.17 is yes,
> # this has been changed in version 1.9.18 to no.
> dns proxy = no
>
> # Case Preservation can be handy - system default is _no_
> # NOTE: These can be set on a per share basis
> ; preserve case = no
> ; short preserve case = no
> # Default case is normally upper case for all DOS files
> ; default case = lower
> # Be very careful with case sensitivity - it can break things!
> ; case sensitive = no
>
> (Share definitions snipped)
>
>
>
>
>
>
Doug VanLeuven
2005-Apr-03 09:44 UTC
[Samba] RE: Smbd 3.0.13 dies when smb.conf has winbind separator = \
Greg Scott wrote:># Global parameters >[global] > workgroup = INFRASUPPORTETC > realm = INFRASUPPORTETC.COM > server string = Greg squidtest Samba Server > interfaces = 10.10.10.2 > security = ADS > log file = /var/log/samba/log.smbd > max log size = 50 > socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192 > dns proxy = No > idmap uid = 10000-20000 > idmap gid = 10000-20000 > >I normally use use kerberos keytab = Yes and let samba manage the keytab instead of creating a user account and using ktpass.exe to generate the host key. But one or the other must be used for ADS authentication to work. Regards, Doug
Murali Gunasekaran
2005-Apr-03 15:22 UTC
[Samba] RE: Smbd 3.0.13 dies when smb.conf has winbind separator = \
Greg,
Just a few suggestions:
1. Try starting winbind with the options -i and -d <debug-level> like
$ /usr/sbin/winbindd -i -d 3
This will show what winbind is doing behind the covers and possibly show
what's wrong.
2. Are you able to authenticate using wbinfo -a username%password ?
3. I haven't used ADS and have only tried setting security=domain, so
not sure about Kerberos auth. Have you joined your Samba server as a
domain member of your Windows PDC? (Check your Active Directory setting
in your windows PDC)
4. Also, make sure your /etc/resolv.conf contains entries to your
nameserver, like "nameserver <pdc-ip-addr>"
Murali
-----Original Message-----
From: Greg Scott [mailto:GregScott@InfraSupport.com]
Sent: Sunday, April 03, 2005 1:54 AM
To: samba@lists.samba.org
Cc: Fredy Hernandez; Scott Anderson
Subject: [Samba] RE: Smbd 3.0.13 dies when smb.conf has winbind
separator = \
It occurred to me that "\" character is also a linux line continuation
character. This realization spawned some experiments:
These variations:
Domain separator =\
Domain separator= \
Domain separator=\
Domain separator = "\"
All gave the same result:
[root@infra-fw lib]# /usr/local/samba/bin/testparm
Load smb config files from /usr/local/samba/lib/smb.conf
Processing section "[homes]"
Processing section "[printers]"
Processing section "[gregshare]"
Loaded services file OK.
ERROR: the 'winbind separator' parameter must be a single character.
Server role: ROLE_DOMAIN_MEMBER
Press enter to see a dump of your service definitions
But I noticed there was a blank line after this line. So I tried this:
Domain separator = \
#
That got rid of the syntax error - but the testparm dump said the
separator character was a # (hash sign). It needs to be a backslash.
All kinds of other tests yielded similar goofy results. In my O'reilly
book, "Using Samba", page 317 says the backslash character is the
default, so maybe I don't need that line anyway. So I got rid of it.
This means example 22.5.1 in section 22.5.3.3 of Samba-HOWTO-Collection
must be wrong.
What's really making me nuts is, why won't smbd call winbindd to go look
up stuff in my AD domain?
I can run ntlm_auth by hand. If I pass it a valid domain\username
password, it returns OK. And if I pass it a bogus one, it returns ERR.
When I run
/usr/local/samba/bin/wbinfo -u
it returns all my AD usernames like this: DOMAIN\user.
So it looks like winbindd is working. But when I run getent passwd, all
that comes back are the entries from my local passwd file. If I'm
reading the documentation correctly, it's supposed to also return my A/D
entries, right? (nsswitch.conf and libraries noted below.) So winbindd
seems to be doing its job, smbd is just not calling it. Could this be
related to the backslash character issue or is this a dead-end?
Here is some more strange behavior, trying to follow the instructions in
22.5.3.1 of the HOWTO-Collection:
[root@infra-fw lib]#
[root@infra-fw lib]# ln --symbolic libnss_windbind.so
libnss_winbind.so.2
[root@infra-fw lib]# ls -la /lib | grep winbind
-rwxr-xr-x 1 root root 305094 Apr 2 20:21
libnss_winbind.so
lrwxrwxrwx 1 root root 18 Apr 3 00:45
libnss_winbind.so.2 -> libnss_windbind.so
[root@infra-fw lib]#
[root@infra-fw lib]# /sbin/ldconfig -v | grep winbind
/sbin/ldconfig: Cannot stat /lib/libnss_winbind.so.2: No such file or
directory
libnss_winbind.so -> libnss_winbind.so
[root@infra-fw lib]#
[root@infra-fw lib]# ls -la /lib | grep winbind
-rwxr-xr-x 1 root root 305094 Apr 2 20:21
libnss_winbind.so
[root@infra-fw lib]#
Note that ldconfig got rid of that symbolic link the HOWTO suggested
putting in. I have to believe the messed up linkage between smbd and
winbindd are related somehow to this.
Here is the dump of my current smb.conf, without all the ugly comments:
[root@infra-fw lib]# /usr/local/samba/bin/testparm
Load smb config files from /usr/local/samba/lib/smb.conf
Processing section "[homes]"
Processing section "[printers]"
Processing section "[gregshare]"
Loaded services file OK.
Server role: ROLE_DOMAIN_MEMBER
Press enter to see a dump of your service definitions
# Global parameters
[global]
workgroup = INFRASUPPORTETC
realm = INFRASUPPORTETC.COM
server string = Greg squidtest Samba Server
interfaces = 10.10.10.2
security = ADS
log file = /var/log/samba/log.smbd
max log size = 50
socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
dns proxy = No
idmap uid = 10000-20000
idmap gid = 10000-20000
[homes]
comment = Home Directories
read only = No
browseable = No
[printers]
comment = All Printers
path = /var/spool/samba
printable = Yes
browseable = No
[gregshare]
comment = Greg's stuff
path = /home/gregs
valid users = "@INFRASUPPORTETC\Domain Users"
read only = No
guest ok = Yes
[root@infra-fw lib]#
- Greg Scott
GregScott@InfraSupportEtc.com
> _____________________________________________
> From: Greg Scott
> Sent: Saturday, April 02, 2005 9:58 PM
> To: 'samba@lists.samba.org'
> Cc: 'Fredy Hernandez'; 'Scott Anderson'
> Subject: Smbd 3.0.13 dies when smb.conf has winbind separator = \
>
> I am trying to get windind to work so my domain users can touch shares
> on this Linux box without being prompted for credentials. I put
> these in nsswitch.conf:
>
> passwd: files winbind
> group: files winbind
>
> Then I did this:
>
> cp /usr/src/samba-3.0.13/source/nsswitch/libnss_winbind.so /lib
> ln --symbolic /lib/libnss_windbind.so /lib/libnss_winbind.so.2
>
> Make libnss_windbind available to winbindd like this:
> /sbin/ldconfig -v | grep winbind
>
> mkdir /var/log/samba
>
> I fire up the daemons like this:
>
> /usr/local/samba/sbin/nmbd
> /usr/local/samba/sbin/smbd
> /usr/local/samba/sbin/winbindd
>
> And ps -ax | grep smbd shows smbd is not running.
>
> After hours and hours of troubleshooting, I found if I change this
> line in /usr/local/samba/lib/smb.conf:
> winbind separator = \
>
> To this (note the hashmark - commented out):
> #winbind separator = \
>
> Smbd does not die. However, it also seems to not want to call winbind
> to authenticate my domain users.
>
> I am using Samba 3.0.13, built from source, with MIT Kervberos 1.4,
> also built from source, on RedHat Linux 9.0. My A/D domain is
> Windows 2003.
>
> I started up smbd with -d 10 (debug level 10) with and without that
> line commented out, so I have these debug traces with and without.
>
> I would really appreciate any advice from the community.
>
> Thanks
>
> - Greg Scott
> GregScott@InfraSupportEtc.com
>
> Here are the last few lines of the log file with that separator line
> in place in smb.conf, just before smbd dies:
>
> [root@infra-fw samba]# cd /var/log/samba
> [root@infra-fw samba]# tail log.smbd
> [2005/04/02 21:21:13, 3] smbd/sec_ctx.c:pop_sec_ctx(386)
> pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
> [2005/04/02 21:21:13, 10] auth/auth_util.c:get_user_groups(714)
> get_user_groups: winbind_getgroups(nobody): result = FAIL
> [2005/04/02 21:21:13, 4] auth/auth_util.c:add_user_groups(796)
> get_user_groups_from_local_sam failed
> [2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406)
> attempting to free (and zero) a server_info structure
> [2005/04/02 21:21:13, 5] auth/auth_util.c:free_server_info(1406)
> attempting to free (and zero) a server_info structure
> [root@infra-fw samba]#
>
> Here is the global section of smb.conf (Although I built from source,
> I started with the smb.conf packaged in the RPM. Yes, I removed the
> RPM (rpm -e) before building from source. I can't use the RPM because
> I need to authenticate with a Win2003 domain and the version of
> Kerberos packaged with RH9.0 doesn't work.)
>
> [root@infra-fw lib]# cd /usr/local/samba/lib
> [root@infra-fw lib]# cat 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
> #
> # 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
> workgroup = infrasupportetc
> netbios name = SQUIDTEST
> realm = INFRASUPPORTETC.COM
>
> # server string is the equivalent of the NT Description field
> server string = Greg squidtest Samba Server
>
> # 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
> printcap name = /etc/printcap
> load printers = yes
>
> # It should not be necessary to spell out the print system type unless
> # yours is non-standard. Currently supported print systems include:
> # bsd, sysv, plp, lprng, aix, hpux, qnx
> ; printing = bsd
>
> # 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/%m.log
> # all log information in one file
> log file = /var/log/samba/log.smbd
>
> # Put a capping on the size of the log files (in Kb).
> max log size = 50
>
> # Security mode. Most people will want user level security. See
> # security_level.txt for details.
> security = ADS
> # Use password server option only with security = server
>
> ; password server = 10.10.10.100
>
> # Password Level allows matching of _n_ characters of the password for
> # all combinations of upper and lower case.
> ; password level = 8
> ; username level = 8
>
> # You may wish to use password encryption. Please read
> # ENCRYPTION.txt, Win95.txt and WinNT.txt in the Samba documentation.
> # Do not enable this option unless you have read those documents
> ; encrypt passwords = yes
> ; smb passwd file = /etc/samba/smbpasswd
>
> encrypt passwords = yes
>
> # idmap uid and idmap gid are aliases for
> # winbind uid and winbid gid, respectively
> idmap uid = 10000-20000
> idmap gid = 10000-20000
> winbind enum users = yes
> winbind enum groups = yes
>
> template shell = /bin/bash
> winbind use default domain = Yes
> winbind nested groups = Yes
> winbind separator = \
>
> # The following are needed to allow password changing from Windows to
> # update the Linux system password also.
> # NOTE: Use these with 'encrypt passwords' and 'smb passwd
file'
> above.
> # NOTE2: You do NOT need these to allow workstations to change only
> # the encrypted SMB passwords. They allow the Unix password
> # to be kept in sync with the SMB password.
> ; unix password sync = Yes
> ; passwd program = /usr/bin/passwd %u
> ; passwd chat = *New*UNIX*password* %n\n *ReType*new*UNIX*password*
> %n\n *passwd:*all*authentication*tokens*updated*successfully*
>
> # Unix users can map to different SMB User names
> ; username map = /etc/samba/smbusers
>
> # 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
> ; include = /etc/samba/smb.conf.%m
>
> # Most people will find that this option gives better performance.
> # See speed.txt and the manual pages for details
> socket options = TCP_NODELAY SO_RCVBUF=8192 SO_SNDBUF=8192
>
> # 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 = 192.168.12.2/24 192.168.13.2/24
>
> interfaces = 10.10.10.2
>
> # Configure remote browse list synchronisation here
> # request announcement to, or browse list sync from:
> # a specific host or from / to a whole subnet (see below)
> ; remote browse sync = 192.168.3.25 192.168.5.255
> # Cause this host to announce itself to local subnets here
> ; remote announce = 192.168.1.255 192.168.2.44
>
> # 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
>
> # All NetBIOS names must be resolved to IP Addresses
> # 'Name Resolve Order' allows the named resolution mechanism to be
> specified
> # the default order is "host lmhosts wins bcast".
"host" means use the
> unix
> # system gethostbyname() function call that will use either /etc/hosts
> OR
> # DNS or NIS depending on the settings of /etc/host.config,
> /etc/nsswitch.conf
> # and the /etc/resolv.conf file. "host" therefore is system
> configuration
> # dependant. This parameter is most often of use to prevent DNS
> lookups
> # in order to resolve NetBIOS names to IP Addresses. Use with care!
> # The example below excludes use of name resolution for machines that
> are NOT
> # on the local network segment
> # - OR - are not deliberately to be known via lmhosts or via WINS.
> ; name resolve order = wins lmhosts bcast
>
> # 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 = w.x.y.z
>
> # 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 built-in default for versions 1.9.17 is yes,
> # this has been changed in version 1.9.18 to no.
> dns proxy = no
>
> # Case Preservation can be handy - system default is _no_
> # NOTE: These can be set on a per share basis
> ; preserve case = no
> ; short preserve case = no
> # Default case is normally upper case for all DOS files
> ; default case = lower
> # Be very careful with case sensitivity - it can break things!
> ; case sensitive = no
>
> (Share definitions snipped)
>
>
>
>
>
>
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Greg Scott
2005-Apr-03 19:28 UTC
[Samba] RE: Smbd 3.0.13 dies when smb.conf has winbind separator = \
With help from Doug VanLeuven I think we fixed the problem. The whole bit with the backslash was a dead-end. Doug sent over this script that puts the libnss_winbind.so and libnss_wins.so libraries where they belong and sets up working symlinks. The documentation for moving the libraries in section 22.5.3.1 of the Samba-HOWTO-Collection is wrong. Use Doug's script instead: I think I still have some Kerberos work to do, but now I can open the shares on this system from a Windows box. My next challenge is squid authentication (sigh) . . . - Greg #!/bin/sh # Save this script some place convenient. # cd /usr/src/samba-3.0.13/source and run this script from there. echo "Copying nsswitch modules to system library" CWD=`pwd` cd /lib rm -f libnss_winbind.so libnss_winbind.so.1 libnss_winbind.so.2 rm -f libnss_wins.so libnss_wins.so.1 libnss_wins.so.2 cd /usr/lib rm -f libnss_winbind.so libnss_wins.so cd $CWD cp -f nsswitch/libnss_winbind.so /lib cp -f nsswitch/libnss_wins.so /lib cd /lib ln -sf libnss_winbind.so libnss_winbind.so.1 ln -sf libnss_winbind.so libnss_winbind.so.2 ln -sf libnss_wins.so libnss_wins.so.1 ln -sf libnss_wins.so libnss_wins.so.2 cd /usr/lib ln -sf ../../lib/libnss_winbind.so libnss_winbind.so ln -sf ../../lib/libnss_wins.so libnss_wins.so /sbin/ldconfig -----Original Message----- From: Murali Gunasekaran [mailto:mgunase@gce2000.com] Sent: Sunday, April 03, 2005 10:26 AM To: Greg Scott; samba@lists.samba.org Subject: RE: [Samba] RE: Smbd 3.0.13 dies when smb.conf has winbind separator = \ Greg, Just a few suggestions: 1. Try starting winbind with the options -i and -d <debug-level> like $ /usr/sbin/winbindd -i -d 3 This will show what winbind is doing behind the covers and possibly show what's wrong. 2. Are you able to authenticate using wbinfo -a username%password ? 3. I haven't used ADS and have only tried setting security=domain, so not sure about Kerberos auth. Have you joined your Samba server as a domain member of your Windows PDC? (Check your Active Directory setting in your windows PDC) 4. Also, make sure your /etc/resolv.conf contains entries to your nameserver, like "nameserver <pdc-ip-addr>" Murali
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