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Rowland Penny

2018-Oct-03 11:09 UTC

[Samba] getent not showing domain users and groups with winbind but works with sssd

On Wed, 3 Oct 2018 12:45:11 +0200
Peter Milesson via samba <samba at lists.samba.org> wrote:
> Hi folks,
> 
> I have finally nailed down the problem with the non-functional getent 
> command when using winbind on a samba member server (AD domain).
> 
> The problem was the entry
> 
>     idmap config * : range 3000-9999
No, it wasn't
> I used the instructions in 
> https://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member
> as a template when setting up the server.
> 
> Changing the line idmap config to
> 
>     idmap config * : range = 16777216-33554431
I have no idea why doing that worked for you, all you have done is
moved the range.
> A change of the wiki page would be in order ;-)
Sorry, but that isn't going to happen ;-)
> 
> The smb.conf below works well against my Samba AD DC. 
and this is mine that works on my Centos 7 VM:

[global]
    workgroup = SAMDOM
    security = ADS
    realm = SAMDOM.EXAMPLE.COM

    dedicated keytab file = /etc/krb5.keytab
    kerberos method = secrets and keytab
    server string = Samba 4 Client %h

    winbind use default domain = yes
    winbind expand groups = 4
    winbind refresh tickets = Yes
    winbind offline logon = yes

    ## map ids outside of domain to tdb files.
    idmap config *:backend = tdb
    idmap config *:range = 3000-9999
    ## map ids from the domain  the ranges may not overlap !
    idmap config SAMDOM : backend = ad
    idmap config SAMDOM : schema_mode = rfc2307
    idmap config SAMDOM : unix_nss_info = yes
    idmap config SAMDOM : range = 10000-999999
    template shell = /bin/bash
    template homedir = /home/%U

    domain master = no
    local master = no
    preferred master = no
    os level = 20
    map to guest = bad user
    host msdfs = no

    # user Administrator workaround, without it you are unable to set privileges
    username map = /etc/samba/user.map

    # For ACL support on domain member
    vfs objects = acl_xattr full_audit
    map acl inherit = Yes
    store dos attributes = Yes

    # Share Setting Globally
    unix extensions = no
    reset on zero vc = yes
    veto files = /.bash_logout/.bash_profile/.bash_history/.bashrc/
    hide unreadable = yes

    # disable printing completely
    load printers = no
    printing = bsd
    printcap name = /dev/null
    disable spoolss = yes

    # logging
    #log level = 10
    log level = 0
    map untrusted to domain = yes

and this is the result:

[root at cen1804 ~]# getent passwd rowland
rowland:*:10000:10000:Rowland Penny:/home/rowland:/bin/bash
[root at cen1804 ~]# getent group Domain\ Users
domain users:x:10000:rowland,...... long list of users.

All I can think of is, you still have sssd installed, I don't.
Or something else isn't set up correctly.

What do the following commands return:

hostname
hostname -s
hostname -d
hostname -f
hostname -i

What is in /etc/resolv.conf
What is in /etc/hosts
What is in /etc/krb5.conf

Rowland

Peter Milesson

2018-Oct-03 13:16 UTC

head link

[Samba] getent not showing domain users and groups with winbind but works with sssd

On 10/3/18 1:09 PM, Rowland Penny via samba wrote:> On Wed, 3 Oct 2018 12:45:11 +0200
> Peter Milesson via samba <samba at lists.samba.org> wrote:
>
>> Hi folks,
>>
>> I have finally nailed down the problem with the non-functional getent
>> command when using winbind on a samba member server (AD domain).
>>
>> The problem was the entry
>>
>>      idmap config * : range 3000-9999
> No, it wasn't
>
>> I used the instructions in
>> https://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member
>> as a template when setting up the server.
>>
>> Changing the line idmap config to
>>
>>      idmap config * : range = 16777216-33554431
> I have no idea why doing that worked for you, all you have done is
> moved the range.
>
>> A change of the wiki page would be in order ;-)
> Sorry, but that isn't going to happen ;-)
>
>> The smb.conf below works well against my Samba AD DC.
> and this is mine that works on my Centos 7 VM:
>
> [global]
>      workgroup = SAMDOM
>      security = ADS
>      realm = SAMDOM.EXAMPLE.COM
>
>      dedicated keytab file = /etc/krb5.keytab
>      kerberos method = secrets and keytab
>      server string = Samba 4 Client %h
>
>      winbind use default domain = yes
>      winbind expand groups = 4
>      winbind refresh tickets = Yes
>      winbind offline logon = yes
>
>      ## map ids outside of domain to tdb files.
>      idmap config *:backend = tdb
>      idmap config *:range = 3000-9999
>      ## map ids from the domain  the ranges may not overlap !
>      idmap config SAMDOM : backend = ad
>      idmap config SAMDOM : schema_mode = rfc2307
>      idmap config SAMDOM : unix_nss_info = yes
>      idmap config SAMDOM : range = 10000-999999
>      template shell = /bin/bash
>      template homedir = /home/%U
>
>      domain master = no
>      local master = no
>      preferred master = no
>      os level = 20
>      map to guest = bad user
>      host msdfs = no
>
>      # user Administrator workaround, without it you are unable to set
privileges
>      username map = /etc/samba/user.map
>
>      # For ACL support on domain member
>      vfs objects = acl_xattr full_audit
>      map acl inherit = Yes
>      store dos attributes = Yes
>
>      # Share Setting Globally
>      unix extensions = no
>      reset on zero vc = yes
>      veto files = /.bash_logout/.bash_profile/.bash_history/.bashrc/
>      hide unreadable = yes
>
>      # disable printing completely
>      load printers = no
>      printing = bsd
>      printcap name = /dev/null
>      disable spoolss = yes
>
>      # logging
>      #log level = 10
>      log level = 0
>      map untrusted to domain = yes
>
> and this is the result:
>
> [root at cen1804 ~]# getent passwd rowland
> rowland:*:10000:10000:Rowland Penny:/home/rowland:/bin/bash
> [root at cen1804 ~]# getent group Domain\ Users
> domain users:x:10000:rowland,...... long list of users.
>
> All I can think of is, you still have sssd installed, I don't.
> Or something else isn't set up correctly.
>
> What do the following commands return:
>
> hostname
> hostname -s
> hostname -d
> hostname -f
> hostname -i
>
> What is in /etc/resolv.conf
> What is in /etc/hosts
> What is in /etc/krb5.conf
>
> Rowland
>Hi Rowland,

Seems that I forgot to put the IP address of the host in hosts. SSSD is 
not installed. I wiped the previous installation, and installed again. I 
was very careful not to install SSSD. The packages I installed were:

samba samba-common samba-client samba-winbind samba-winbind-clients 
krb5-workstation authconfig

When trying to use a Windows computer for administration (Computer 
management) and connecting to the member server, there is a Windows 
message that it was not possible to connect (problems with DCOM). 
However, it's possible to browse the share on the samba member, and 
create files.

Still works, after several restarts ;-)

Best regards,

Peter



hostname:    smbtest.samdom.local

hostname -s: smbtest

hostname -d:     samdom.local

hostname -f:    smbtest

hostname -i:    192.168.6.79


resolv.conf
======
search samdom.local
nameserver 192.168.6.80


hosts
===
127.0.0.1   localhost localhost.localdomain localhost4 
localhost4.localdomain4
::1         localhost localhost.localdomain localhost6 
localhost6.localdomain6
192.168.6.79 smbtest.samdom.local smbtest


krb5.conf
=====
[libdefaults]
         default_realm = SAMDOM.LOCAL
         dns_lookup_realm = false
         dns_lookup_kdc = true

Rowland Penny

2018-Oct-03 13:38 UTC

head link

[Samba] getent not showing domain users and groups with winbind but works with sssd

On Wed, 3 Oct 2018 15:16:50 +0200
Peter Milesson via samba <samba at lists.samba.org> wrote:
> 
> On 10/3/18 1:09 PM, Rowland Penny via samba wrote:
> > On Wed, 3 Oct 2018 12:45:11 +0200
> > Peter Milesson via samba <samba at lists.samba.org> wrote:
> >
> >> Hi folks,
> >>
> >> I have finally nailed down the problem with the non-functional
> >> getent command when using winbind on a samba member server (AD
> >> domain).
> >>
> >> The problem was the entry
> >>
> >>      idmap config * : range 3000-9999
> > No, it wasn't
> >
> >> I used the instructions in
> >>
https://wiki.samba.org/index.php/Setting_up_Samba_as_a_Domain_Member
> >> as a template when setting up the server.
> >>
> >> Changing the line idmap config to
> >>
> >>      idmap config * : range = 16777216-33554431
> > I have no idea why doing that worked for you, all you have done is
> > moved the range.
> >
> >> A change of the wiki page would be in order ;-)
> > Sorry, but that isn't going to happen ;-)
> >
> >> The smb.conf below works well against my Samba AD DC.
> > and this is mine that works on my Centos 7 VM:
> >
> > [global]
> >      workgroup = SAMDOM
> >      security = ADS
> >      realm = SAMDOM.EXAMPLE.COM
> >
> >      dedicated keytab file = /etc/krb5.keytab
> >      kerberos method = secrets and keytab
> >      server string = Samba 4 Client %h
> >
> >      winbind use default domain = yes
> >      winbind expand groups = 4
> >      winbind refresh tickets = Yes
> >      winbind offline logon = yes
> >
> >      ## map ids outside of domain to tdb files.
> >      idmap config *:backend = tdb
> >      idmap config *:range = 3000-9999
> >      ## map ids from the domain  the ranges may not overlap !
> >      idmap config SAMDOM : backend = ad
> >      idmap config SAMDOM : schema_mode = rfc2307
> >      idmap config SAMDOM : unix_nss_info = yes
> >      idmap config SAMDOM : range = 10000-999999
> >      template shell = /bin/bash
> >      template homedir = /home/%U
> >
> >      domain master = no
> >      local master = no
> >      preferred master = no
> >      os level = 20
> >      map to guest = bad user
> >      host msdfs = no
> >
> >      # user Administrator workaround, without it you are unable to
> > set privileges username map = /etc/samba/user.map
> >
> >      # For ACL support on domain member
> >      vfs objects = acl_xattr full_audit
> >      map acl inherit = Yes
> >      store dos attributes = Yes
> >
> >      # Share Setting Globally
> >      unix extensions = no
> >      reset on zero vc = yes
> >      veto files = /.bash_logout/.bash_profile/.bash_history/.bashrc/
> >      hide unreadable = yes
> >
> >      # disable printing completely
> >      load printers = no
> >      printing = bsd
> >      printcap name = /dev/null
> >      disable spoolss = yes
> >
> >      # logging
> >      #log level = 10
> >      log level = 0
> >      map untrusted to domain = yes
> >
> > and this is the result:
> >
> > [root at cen1804 ~]# getent passwd rowland
> > rowland:*:10000:10000:Rowland Penny:/home/rowland:/bin/bash
> > [root at cen1804 ~]# getent group Domain\ Users
> > domain users:x:10000:rowland,...... long list of users.
> >
> > All I can think of is, you still have sssd installed, I don't.
> > Or something else isn't set up correctly.
> >
> > What do the following commands return:
> >
> > hostname
> > hostname -s
> > hostname -d
> > hostname -f
> > hostname -i
> >
> > What is in /etc/resolv.conf
> > What is in /etc/hosts
> > What is in /etc/krb5.conf
> >
> > Rowland
> >
> Hi Rowland,
> 
> Seems that I forgot to put the IP address of the host in hosts. SSSD
> is not installed. I wiped the previous installation, and installed
> again. I was very careful not to install SSSD. The packages I
> installed were:
> 
> samba samba-common samba-client samba-winbind samba-winbind-clients 
> krb5-workstation authconfig
> 
> When trying to use a Windows computer for administration (Computer 
> management) and connecting to the member server, there is a Windows 
> message that it was not possible to connect (problems with DCOM). 
> However, it's possible to browse the share on the samba member, and 
> create files.
> 
> Still works, after several restarts ;-)
> 
> Best regards,
> 
> Peter
> 
> hostname:    smbtest.samdom.local
> 
> hostname -s: smbtest
> 
> hostname -d:     samdom.local
> 
> hostname -f:    smbtest
> 
> hostname -i:    192.168.6.79
Oh great, the 'hostname' and 'hostname -f' test results are the
wrong
way round. Try opening /etc/hostname in an editor and remove the domain
name i.e. I think you will find it is 'smbtest.samdom.local' make it
just 'smbtest'
> hosts
> ===> 
> 127.0.0.1   localhost localhost.localdomain localhost4 
> localhost4.localdomain4
> ::1         localhost localhost.localdomain localhost6 
> localhost6.localdomain6
> 192.168.6.79 smbtest.samdom.local smbtest
> 
Try making /etc/hosts look like this:

127.0.0.1 localhost
::1       localhost
192.168.6.79 smbtest.samdom.local smbtest

Now run the 'hostname' tests again

Rowland

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