[Samba] AD DC eventually not browsable without restart

Kevin Field kev at brantaero.com
Thu Sep 5 14:26:32 MDT 2013


I just noticed something interesting, since I have /etc under version 
control: /etc/mtab changed thusly:

-tmpfs /dev/shm tmpfs rw,rootcontext="system_u:object_r:tmpfs_t:s0" 0 0
+tmpfs /dev/shm tmpfs rw 0 0

Does this mean anything to our troubleshooting?

Thanks,
Kev

On 2013-09-04 2:02 PM, Kevin Field wrote:
> Yeah, it's still
>
> tmpfs                 5.9G     0  5.9G   0% /dev/shm
>
> The really odd thing is, currently, it's telling me this if I try to
> access it from OLDDC, running Windows Server 2003.  But if I remote into
> another computer (GEYSER) on the network that's running Windows XP, I
> can access \\NEWDC just fine.  Back to OLDDC and it still doesn't work.
>
> Besides the OS I noticed another difference, running "echo
> %logonserver%" from GEYSER, it reports \\G5, whereas running that on
> OLDDC reports \\OLDDC.  I know this is normal behaviour, but I wonder if
> it has anything to do with it.  I also wonder if, if I leave GEYSER
> logged in long enough, I'll have the same result on it as I do on OLDDC.
>
> So nobody else is having this browsability problem, eh?
>
> Kev
>
> On 2013-08-24 1:41 PM, Kevin Field wrote:
>> Hmm...it hasn't been long enough since a restart yet, because it's not
>> doing it ATM, but nonetheless if it's a question of an extra 45 mb I
>> think we have it covered:
>>
>> tmpfs                 5.9G     0  5.9G   0% /dev/shm
>>
>> But I'll check anyway next opportunity and report back if it's a
>> positive.
>>
>> Kev
>>
>> On 2013-08-24 11:51 AM, Ricky Nance wrote:
>>> I wonder if your hitting the /run/lock fill up that another user
>>> reported on a week or two ago (they are using ubuntu). I think the
>>> solution was to make that tmpfs partition bigger (like 50 mb instead of
>>> 5 mb). next time it is unresponsive check and see what the output of 'df
>>> -h' is.
>>>
>>> Ricky
>>>
>>>
>>> On Sat, Aug 24, 2013 at 10:02 AM, Kevin Field <kev at brantaero.com
>>> <mailto:kev at brantaero.com>> wrote:
>>>
>>>     I've upgraded to 4.0.9 and this behaviour persists.
>>>
>>>     Should I file a bug report, do you think? �Is nobody else
>>>     experiencing this?
>>>
>>>     Thanks,
>>>
>>>     Kev
>>>
>>>     On 2013-08-20 11:40 AM, Kristofer Pettijohn wrote:
>>>
>>>         You may want to see if it is this bug, which is fixed in 4.0.9:
>>>         https://bugzilla.samba.org/__show_bug.cgi?id=9820
>>>         <https://bugzilla.samba.org/show_bug.cgi?id=9820>
>>>
>>>
>>>
>>>
>>> ------------------------------__------------------------------__------------
>>>
>>>
>>>
>>>         *From: *"Kevin Field" <kev at brantaero.com
>>> <mailto:kev at brantaero.com>>
>>>         *To: *samba at lists.samba.org <mailto:samba at lists.samba.org>
>>>         *Sent: *Tuesday, August 20, 2013 9:38:32 AM
>>>         *Subject: *[Samba] AD DC eventually not browsable without
>>> restart
>>>
>>>
>>>         I have a SerNet Samba 4.0.8 AD DC running on CentOS 6.4 (newdc)
>>>         replicating from a W2K3 DC (olddc). �When I first launch Samba
>>> using
>>>         `sudo samba`, I can go to the Windows server and browse to
>>>         \\newdc in
>>>         Explorer, and I see mytestshare, netlogon, printers, sysvol, and
>>>         "Printers and Faxes".
>>>
>>>         After a while (I'm not sure how long precisely, but under 24
>>>         hours) I
>>>         could not navigate to \\newdc without the following error:
>>>
>>>         ---------------------------
>>>         \\newdc
>>>         ---------------------------
>>>         \\newdc is not accessible. You might not have permission to
>>> use this
>>>         network resource. Contact the administrator of this server to
>>>         find out
>>>         if you have access permissions.
>>>
>>>         The Server service is not started.
>>>         ---------------------------
>>>         OK
>>>         ---------------------------
>>>
>>>         But in the interim, I had not been doing anything in the system,
>>>         so I'm
>>>         not sure what might have caused it. �One time it even happened
>>> on a
>>>         weekend when no backup or anything particularly special is
>>> scheduled
>>>         while I was away.
>>>
>>>         Anyway, running `sudo killall samba` and then `sudo samba`
>>> makes it
>>>         suddenly browsable again.
>>>
>>>         This is happening every day. �I guess it would be best to figure
>>>         this
>>>         problem out before we make Samba the only DC.
>>>
>>>         Here's my smb.conf, mostly set up by samba-tool, and now a
>>> work in
>>>         progress to add the extras we will use:
>>>
>>>         # Global parameters
>>>         [global]
>>>         � � � � � workgroup = MYDOMAIN
>>>         � � � � � realm = mydomain.lan
>>>         � � � � � netbios name = NEWDC
>>>         � � � � � server role = active directory domain controller
>>>         � � � � � server services = rpc, nbt, wrepl, ldap, cldap, kdc,
>>>         drepl,
>>>         winbind, ntp_signd, kcc, dnsupdate, smb, dns
>>>         � � � � � allow dns updates = true
>>>         � � � � � dns forwarder = 192.168.1.1
>>>         # � � � �dns recursive queries = yes
>>>         � � � � � dcerpc endpoint servers = epmapper, wkssvc, rpcecho,
>>> samr,
>>>         netlogon, lsarpc, spoolss, drsuapi, dssetup, unixinfo, browser,
>>>         eventlog6, backupkey, dnsserver, winreg, srvsvc
>>>         # � � � dcerpc endpoint servers = winreg srvsvc
>>>         � � � � � load printers = yes
>>>         � � � � � printing = cups
>>>
>>>         [netlogon]
>>>         � � � � � path = /var/lib/samba/sysvol/__mydomain.lan/scripts
>>>         � � � � � read only = No
>>>
>>>         [sysvol]
>>>         � � � � � path = /var/lib/samba/sysvol
>>>         � � � � � read only = No
>>>
>>>         [printers]
>>>         � � � �comment = All Printers
>>>         � � � �path = /var/spool/samba
>>>         � � � �browseable = Yes
>>>         � � � �read only = No
>>>         � � � �printable = Yes
>>>
>>>         [print$]
>>>         � � � �comment = Point and Print Printer Drivers
>>>         � � � �path = /var/lib/samba/printing
>>>         � � � �read only = No
>>>
>>>         [mytestshare]
>>>         � � � � � path = /srv/mytestshare/
>>>         � � � � � read only = No
>>>
>>>
>>>         Any ideas?
>>>
>>>         Thanks,
>>>         Kev
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