[Samba] samba4 stopped working

[Rowland penny]

On 04/07/16 16:36, Gary Dale wrote:
> I've been using Samba4 on Debian/Jessie since it became "stable". 
> After the last upgrade however, I got a massive failure.
>
> The first symptom I noticed was that I couldn't grab updates from the 
> Debian servers. However when clients tried to log in, the real problem 
> revealed itself. They could only log on using a temporary profile and 
> couldn't connect to any of the shares or printers.
>
> When I test my implementation of Samba, it fails the basic test:
>
> # smbclient -L localhost -U%
> Connection to localhost failed (Error NT_STATUS_CONNECTION_REFUSED)
>
> The globals section of smb.conf is:
>
> [global]
>         workgroup = DENTALOFFICE
>         realm = DENTALOFFICE.ROSSLAND.DENTAL
>         netbios name = MOLAR
>         server role = active directory domain controller
>         dns forwarder = 8.8.8.8
>         idmap_ldb:use rfc2307 = yes
>         allow dns updates = nonsecure
>
> which explains why I can't get to the Debian servers. The hand off to 
> Google's DNS servers never happens.
>
> ps aux | grep  nmbd, smbd or samba all show that samba isn't running. 
> The logs for starting samba show:
>
> [2016/07/04 11:29:48.240042,  0] 
> ../source4/smbd/server.c:370(binary_smbd_main)
>   samba version 4.2.10-Debian started.
>   Copyright Andrew Tridgell and the Samba Team 1992-2014
> [2016/07/04 11:29:48.421540,  0] 
> ../source4/smbd/server.c:488(binary_smbd_main)
>   samba: using 'standard' process model
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> [2016/07/04 11:29:48.446253,  0] 
> ../lib/util/become_daemon.c:124(daemon_ready)
>   STATUS=daemon 'samba' finished starting up and ready to serve 
> connections
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> samba: setproctitle not initialized, please either call 
> setproctitle_init() or link against libbsd-ctor.
> [2016/07/04 11:29:48.460701,  0] 
> ../lib/util/util_runcmd.c:324(samba_runcmd_io_handler)
>   /usr/sbin/winbindd: Failed to exec child - No such file or directory
> [2016/07/04 11:29:48.462580,  0] 
> ../source4/winbind/winbindd.c:49(winbindd_done)
>   winbindd daemon exited normally
> task_server_terminate: [winbindd child process exited]
> [2016/07/04 11:29:48.464159,  0] 
> ../source4/smbd/server.c:211(samba_terminate)
>   samba_terminate: winbindd child process exited
>
>
> Although the message about the daemon being ready seems to indicate 
> that samba is running, as I said, ps aux shows that it isn't.
>
> Any ideas how I can get Samba back up? Uninstalling and reinstalling 
> it didn't work.
>
>

What version did you upgrade from and what is the version now ?

You could try installing 'winbind', this seems to be your problem 
'/usr/sbin/winbindd: Failed to exec child - No such file or directory'
Earlier versions of Samba4 running as a DC used 'winbind' built into the 
'samba' binary, later versions use the separate 'winbindd' binary instead.

Rowland