[Samba] [samba] How to configure Winbind to use uidNumber and gidNumber
Michael Adam
obnox at samba.org
Wed Nov 11 06:52:39 UTC 2015
On 2015-11-10 at 13:57 +0000, Rowland Penny wrote:
> On 10/11/15 13:42, mathias dufresne wrote:
> >Thank you for this quick answer Louis.
> >
> >On DC:
> >
> >On DC I had to add one line to have winbind retrieving uidNumber AD field
> >rather than having Winbind chosing some random UID for my users.
> >This line is:
> >
> >idmap_ldb:use rfc2307 = yes
> >
> >as explained in https://wiki.samba.org/index.php/Setting_up_RFC2307_in_AD
> >
> >That's a start.
> >
> >Unfortunately winbind is still giving my users GID number set to 100, which
> >is "Domain Users" group, when my users have gidNumber attribute set.
>
> unfortunately the contents of the 'gidNumber' attribute is not used for the
> users GID, you need to give 'Domain Users' a gidNumber and this is what will
> be used.
That is not unfortunate, but the right thing to do (imho),
because the domain users group (or whatever the primary AD
level group is for the user) is what will appear in the access
token when the user accesses a file server.
We can think about making the use of the gidNumber attribute
a configurable option (at least for the start in the domain
member case with idmap_ad). But again, the right thing to do
is use the SID-level primary group for primary gid of the unix
user.
> >Same for shell, in AD loginShell is defined to /bin/bash for all my UNIX
> >users and winbind gives /bin/false on DC. Perhaps that's what it expected
> >by that tool but I still found that behaviour very confusing.
> >Please note I know there is a "template shell" option in smb.conf.
> >Unfortunately this option is, I think, to set all shell equal to that
> >template, for all users. That's not what we need. If some user in AD wants
> >to use CSH, this user must have a shell set to /bin/csh (or wherever it is
> >installed), if some user has to be set to /bin/false, it must be. And for
> >most of our users they would receive /bin/bash because it is what we
> >configure in loginShell by default.
>
> You can only use the 'template' lines on the DC, if you need to have
> different home dirs or shells, use a member server.
As discussed elsewhere, we should add the feature to use the AD
attributes (configurably). Someone has to find the time to
implement the changes.
Cheers - Michael
> >Same for home directories. In AD I set unixHomeDirectory (I also tried with
> >homeDirectory field) to /home/<username> and in getent passwd <username> I
> >get home set to /home/<SAMBA.DOMAIN>/<username>
> >
> >Anyway getent passwd <username> on DC is now working with users having UID
> >set to content of uidNumber field.
> >None of these users can connect on DC (even if uidNumber = 0) and I expect
> >this behaviour is because they have a shell set to /bin/false.
>
> Correct, if you want to login to the DC, use 'template shell = /bin/bash'
>
> Rowland
>
> >On member:
> >
> >my smb.conf (from testparm)
> >---------------------------------------------------------------------
> >[global]
> > workgroup = SAMBA.DOMAIN
> > realm = SAMBA.DOMAIN.TLD
> > server string = Samba Server Version %v
> > security = ADS
> > log file = /var/log/samba/log.%m
> > max log size = 2048
> > winbind enum users = Yes
> > winbind enum groups = Yes
> > winbind use default domain = Yes
> > winbind nss info = rfc2307
> > winbind normalize names = Yes
> > idmap config SAMBA.DOMAIN:range = 10000-2000000000
> > idmap config SAMBA.DOMAIN:schema_mode = rfc2307
> > idmap config SAMBA.DOMAIN:backend = ad
> > idmap config *:range = 2000-9999
> > idmap config * : backend = ad
> > cups options = raw
> >
> >[homes]
> > comment = Home Directories
> > read only = No
> > browseable = No
> >
> >[printers]
> > comment = All Printers
> > path = /var/spool/samba
> > printable = Yes
> > print ok = Yes
> > browseable = No
> >---------------------------------------------------------------------
> >
> >nsswitch.conf:
> >passwd: files winbind
> >shadow: files winbind
> >group: files winbind
> >
> >and pam.d files are both configured:
> >---------------------------------------------------------------------
> >grep winb /etc/pam.d/*
> >/etc/pam.d/fingerprint-auth:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/fingerprint-auth:session optional pam_winbind.so
> >/etc/pam.d/fingerprint-auth-ac:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/fingerprint-auth-ac:session optional pam_winbind.so
> >/etc/pam.d/password-auth:auth sufficient pam_winbind.so
> >use_first_pass
> >/etc/pam.d/password-auth:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/password-auth:password sufficient pam_winbind.so
> >use_authtok
> >/etc/pam.d/password-auth:session optional pam_winbind.so
> >/etc/pam.d/password-auth-ac:auth sufficient pam_winbind.so
> >use_first_pass
> >/etc/pam.d/password-auth-ac:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/password-auth-ac:password sufficient pam_winbind.so
> >use_authtok
> >/etc/pam.d/password-auth-ac:session optional pam_winbind.so
> >/etc/pam.d/smartcard-auth:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/smartcard-auth:session optional pam_winbind.so
> >/etc/pam.d/smartcard-auth-ac:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/smartcard-auth-ac:session optional pam_winbind.so
> >/etc/pam.d/system-auth:auth sufficient pam_winbind.so
> >use_first_pass
> >/etc/pam.d/system-auth:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/system-auth:password sufficient pam_winbind.so use_authtok
> >/etc/pam.d/system-auth:session optional pam_winbind.so
> >/etc/pam.d/system-auth-ac:auth sufficient pam_winbind.so
> >use_first_pass
> >/etc/pam.d/system-auth-ac:account [default=bad success=ok
> >user_unknown=ignore] pam_winbind.so
> >/etc/pam.d/system-auth-ac:password sufficient pam_winbind.so
> >use_authtok
> >/etc/pam.d/system-auth-ac:session optional pam_winbind.so
> >---------------------------------------------------------------------
> >
> >Here are the logs generated during getent passwd commands, extracted from
> >log.winbindd on member server (with log level = 3 winbind:9)
> >
> >getent passwd <username>
> >---------------------------------------------------------------------
> >[2015/11/10 13:16:37.550045, 6]
> >../source3/winbindd/winbindd.c:871(new_connection)
> > accepted socket 22
> >[2015/11/10 13:16:37.550141, 3]
> >../source3/winbindd/winbindd_misc.c:395(winbindd_interface_version)
> > [ 2906]: request interface version
> >[2015/11/10 13:16:37.550294, 3]
> >../source3/winbindd/winbindd_misc.c:428(winbindd_priv_pipe_dir)
> > [ 2906]: request location of privileged pipe
> >[2015/11/10 13:16:37.550440, 6]
> >../source3/winbindd/winbindd.c:871(new_connection)
> > accepted socket 28
> >[2015/11/10 13:16:37.550478, 6]
> >../source3/winbindd/winbindd.c:919(winbind_client_request_read)
> > closing socket 22, client exited
> >[2015/11/10 13:16:37.550506, 3]
> >../source3/winbindd/winbindd_getpwnam.c:56(winbindd_getpwnam_send)
> > getpwnam stephane.morin
> >[2015/11/10 13:16:37.550633, 7]
> >../source3/winbindd/winbindd_ads.c:61(ads_cached_connection_reuse)
> > Current tickets expire in 34856 seconds (at 1447192653, time is now
> >1447157797)
> >[2015/11/10 13:16:41.259064, 5]
> >../source3/winbindd/winbindd_cache.c:1272(resolve_alias_to_username)
> > resolve_alias_to_username: backend query returned NT_STATUS_OK
> >[2015/11/10 13:16:41.281997, 5]
> >../source3/winbindd/winbindd_getpwnam.c:137(winbindd_getpwnam_recv)
> > Could not convert sid S-1-5-21-569364669-4183652282-291509484-43151:
> >NT_STATUS_NONE_MAPPED
> >[2015/11/10 13:16:41.282169, 6]
> >../source3/winbindd/winbindd.c:919(winbind_client_request_read)
> > closing socket 28, client exited
> >
> >
> >getent passwd SAMBA.DOMAIN\\<username>
> >---------------------------------------------------------------------
> >[2015/11/10 13:16:50.109816, 6]
> >../source3/winbindd/winbindd.c:871(new_connection)
> > accepted socket 22
> >[2015/11/10 13:16:50.109924, 3]
> >../source3/winbindd/winbindd_misc.c:395(winbindd_interface_version)
> > [ 2907]: request interface version
> >[2015/11/10 13:16:50.109977, 3]
> >../source3/winbindd/winbindd_misc.c:428(winbindd_priv_pipe_dir)
> > [ 2907]: request location of privileged pipe
> >[2015/11/10 13:16:50.110069, 6]
> >../source3/winbindd/winbindd.c:871(new_connection)
> > accepted socket 28
> >[2015/11/10 13:16:50.110130, 6]
> >../source3/winbindd/winbindd.c:919(winbind_client_request_read)
> > closing socket 22, client exited
> >[2015/11/10 13:16:50.110162, 3]
> >../source3/winbindd/winbindd_getpwnam.c:56(winbindd_getpwnam_send)
> > getpwnam ad.dgfip\stephane.morin
> >[2015/11/10 13:16:50.110403, 5]
> >../source3/winbindd/winbindd_getpwnam.c:137(winbindd_getpwnam_recv)
> > Could not convert sid S-1-5-21-569364669-4183652282-291509484-43151:
> >NT_STATUS_NONE_MAPPED
> >[2015/11/10 13:16:50.110552, 6]
> >../source3/winbindd/winbindd.c:919(winbind_client_request_read)
> > closing socket 28, client exited
> >---------------------------------------------------------------------
> >
> >And wbinfo -i <username> does not work:
> >wbinfo -i administrator
> >failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
> >Could not get info for user administrator
> >Same behaviour for others users.
> >
> >---------------------------------------------------------------------------------------------------
> >---------------------------------------------------------------------------------------------------
> >
> >Now wbinfo:
> >-------------------------------------------------
> >wbinfo -u
> >-------------------------------------------------
> >On DCs:
> >wbinfo -u on DCs does not show anything. It just gives up after few seconds
> >(around 10s on both DCs tested).
> >
> >On member:
> >wbinfo -u | wc -l
> >49504
> >
> >when
> >ldbsearch -H $sam objectcategory=person | tail -3
> ># returned 49507 records
> ># 49504 entries
> ># 3 referrals
> >
> >So wbinfo -u returns all users on this member server.
> >
> >
> >-------------------------------------------------
> >wbinfo -i <username>
> >-------------------------------------------------
> >On DCs:
> >wbinfo -i administrator
> >SAMBA.DOMAIN\administrator:*:0:100::/home/SAMBA.DOMAIN/administrator:/bin/false
> >wbinfo -i mathias
> >SAMBA.DOMAIN\mathias:*:0:100:mathias
> >dufresne:/home/SAMBA.DOMAIN/mathias:/bin/false
> >wbinfo -i <username>
> >SAMBA.DOMAIN\<username>:*:1013569430:100:<username>:/home/SAMBA.DOMAIN/<username>:/bin/false
> >
> >On member:
> >wbinfo -i administrator
> >failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
> >Could not get info for user administrator
> > wbinfo -i mathias
> >failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
> >Could not get info for user mathias
> >wbinfo -i <username>
> >failed to call wbcGetpwnam: WBC_ERR_DOMAIN_NOT_FOUND
> >Could not get info for user <username>
> >
> >On member I was using Samba packages from Centos 7 (it's a Centos 7) with
> >version 4.1.12-24.el7_1.
> >I switched to version 4.3.1 (the one I'm using for DCs) and result are the
> >same.
> >
> >I'm facing a real lack of knowledge and I didn't yet find what to read to
> >fill these lacks.
> >
> >Cheers,
> >
> >mathias
> >
> >
>
>
> --
> To unsubscribe from this list go to the following URL and read the
> instructions: https://lists.samba.org/mailman/options/samba
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 198 bytes
Desc: not available
URL: <http://lists.samba.org/pipermail/samba/attachments/20151111/5b0f776a/signature.sig>
More information about the samba
mailing list