[Samba] Changed PDC IP, all hell broke lose

Paul Raines raines at nmr.mgh.harvard.edu
Thu Sep 6 07:44:42 MDT 2012 

I emailed the admins and they said they "removed the old IP address"
from the WINS server and that seemed to fix things.

-- Paul Raines (http://help.nmr.mgh.harvard.edu)



On Thu, 6 Sep 2012 9:37am, Robert Adkins II wrote:

> I think you can/should have them remove the PDC from their WINS entry on
> their end and then you can rejoin the network with the new IP Address.
>
> Outside of that, I can only suggest looking into how to send an update to a
> record on a WINS server from a Samba PDC. I'm unsure if that is possible as
> I have only run a fully Windows or a Linux/Samba with Windows Clients as a
> network.
>
>
> --
>
> Regards,
> Robert Adkins
>
>
>
>> -----Original Message-----
>> From: samba-bounces at lists.samba.org
>> [mailto:samba-bounces at lists.samba.org] On Behalf Of Paul Raines
>> Sent: Tuesday, September 04, 2012 2:24 PM
>> To: samba at lists.samba.org
>> Subject: Re: [Samba] Changed PDC IP, all hell broke lose
>>
>>
>> It is definitely an issue with the WINS server which returns
>> the old IP address
>>
>> # nmblookup -U 172.27.88.81 -R 'MRIRESEARCH#1b'
>> querying MRIRESEARCH on 172.27.88.81
>> 132.183.202.95 MRIRESEARCH<1b>
>>
>> SO it is not automatically picking up the IP change which
>> happened 4 days ago and I have restarted samba on my PDC
>> several times.  The old IP is definitely not in /etc/hosts
>> anymore or anywhere in smb.conf.  It only shows up in
>> gencache.tdb in the files /var/lib/samba even though I keep
>> deleting that file when I restart.
>>
>> WINS is a total mystery to me.  How is this supposed to work?
>>
>> -- Paul Raines (http://help.nmr.mgh.harvard.edu)
>>
>>
>>
>> On Tue, 4 Sep 2012 12:00pm, Paul Raines wrote:
>>
>>> I have no idea what the WINS server is except that I am sure it
>>> running on Windows since they are totally Windows-based
>> organization.
>>> So the WINS server is definitely the problem?  When I talk
>> to them and
>>> mention I am using Samba on Linux they may totally just say
>> "we don't support it" and hang up.
>>>
>>> It seems a strange design that a WINS server can take
>> precedence over
>>> my explicit "password server" setting in my smb.conf file.
>>>
>>> -- Paul Raines (http://help.nmr.mgh.harvard.edu)
>>>
>>>
>>>
>>> On Tue, 4 Sep 2012 11:21am, Robert Adkins II wrote:
>>>
>>>> More information is required.
>>>>
>>>> What is the WINS server running OS wise? Can you work with the IT
>>>> Staff in charge of that WINS Server?
>>>>
>>>> --
>>>>
>>>> Regards,
>>>> Robert Adkins
>>>>
>>>>
>>>>
>>>>> -----Original Message-----
>>>>> From: Paul Raines [mailto:raines at nmr.mgh.harvard.edu]
>>>>> Sent: Tuesday, September 04, 2012 11:16 AM
>>>>> To: Robert Adkins II
>>>>> Cc: samba at lists.samba.org
>>>>> Subject: RE: [Samba] Changed PDC IP, all hell broke lose
>>>>>
>>>>>
>>>>> I am not running winbindd on the server.  I am using the
>> WINS server
>>>>> of my hospital which I have no control over.
>>>>>
>>>>> I have already tried deleting browse.dat (I do not see
>> the other two
>>>>> files anywhere) to no avail.
>>>>>
>>>>> So my fear is that this is all happening because the WINS
>> server is
>>>>> refusing to recognize the change since I cannot do anything about
>>>>> it. Is that the issue?  Is there anyway to force a WINS server to
>>>>> change the IP it has a for domain master browser?
>>>>>
>>>>> -- Paul Raines (http://help.nmr.mgh.harvard.edu)
>>>>>
>>>>>
>>>>>
>>>>> On Tue, 4 Sep 2012 10:59am, Robert Adkins II wrote:
>>>>>
>>>>>> It's most likely that your server has the old IP Address
>>>>> Cached in the
>>>>>> wins.dat, browse.dat, browse.tdb.
>>>>>>
>>>>>> I recommend the following:
>>>>>>
>>>>>> Shutdown the windbind, nmbd and smbd services.
>>>>>>
>>>>>> Back up each of the above mentioned files.
>>>>>>
>>>>>> Delete the original above named files.
>>>>>>
>>>>>> Restart your services and then see if you can connect.
>>>>>>
>>>>>> You may also need to edit your samba configuration file
>> to point to
>>>>>> the new server IP Address as the PDC Master Browser.
>> (Assuming you
>>>>>> didn't already do
>>>>>> that.)
>>>>>>
>>>>>> The problem is that your server is telling clients to
>>>>> attempt to find
>>>>>> it on a network that no longer exists.
>>>>>>
>>>>>> --
>>>>>>
>>>>>> Regards,
>>>>>> Robert Adkins II
>>>>>>
>>>>>>
>>>>>>
>>>>>>> -----Original Message-----
>>>>>>> From: samba-bounces at lists.samba.org
>>>>>>> [mailto:samba-bounces at lists.samba.org] On Behalf Of Paul Raines
>>>>>>> Sent: Tuesday, September 04, 2012 10:41 AM
>>>>>>> To: samba at lists.samba.org
>>>>>>> Subject: [Samba] Changed PDC IP, all hell broke lose
>>>>>>>
>>>>>>>
>>>>>>> I had to move my RedHat 5 box acting as a PDC to a new IP
>>>>> address. It
>>>>>>> is running samba 3.5.10.  After the move, none of my
>>>>> windows or linux
>>>>>>> samba clients worked anymore.  I tried rejoining some to
>>>>> the domain,
>>>>>>> but would get error
>>>>>>>
>>>>>>> Unable to find a suitable server
>>>>>>> Join to domain 'MRIRESEARCH' is not valid
>>>>>>>
>>>>>>>
>>>>>>> The old PDC IP address is 132.183.202.95 and nothing is
>> at that IP
>>>>>>> anymore (for 4 days now).  The new IP is 172.21.21.35
>>>>>>>
>>>>>>> I ran 'net -d 10 join' and would see it was still trying
>>>>> to connect
>>>>>>> to the old IP address.  I tried 'net cache flush' to no
>> avail.  I
>>>>>>> shut down samba, removed every file in /var/cache/samba
>>>>> and still no
>>>>>>> change.
>>>>>>> It tries to go to the old IP address.
>>>>>>>
>>>>>>> On the PDC box, I increase 'os level' from 60 to 70,
>>>>> stopped the nmbd
>>>>>>> and smbd processes, did a 'net flush cache' and
>> restarted nmbd and
>>>>>>> smbd. Still it fails and the nmbd log as the following.
>>>>>>>
>>>>>>> ==========
>>>>>>> [2012/09/04 10:09:25,  0] nmbd/nmbd.c:857(main)
>>>>>>>    nmbd version 3.5.10-0.110.el5_8 started.
>>>>>>>    Copyright Andrew Tridgell and the Samba Team 1992-2010
>>>>>>> [2012/09/04 10:09:25.716397,  0]
>>>>>>> nmbd/nmbd_logonnames.c:160(add_logon_names)
>>>>>>>    add_domain_logon_names:
>>>>>>>    Attempting to become logon server for workgroup
>> MRIRESEARCH on
>>>>>>> subnet 172.21.21.35
>>>>>>> [2012/09/04 10:09:25.716599,  0]
>>>>>>> nmbd/nmbd_logonnames.c:160(add_logon_names)
>>>>>>>    add_domain_logon_names:
>>>>>>>    Attempting to become logon server for workgroup
>> MRIRESEARCH on
>>>>>>> subnet 192.168.0.150
>>>>>>> [2012/09/04 10:09:25.716671,  0]
>>>>>>> nmbd/nmbd_logonnames.c:160(add_logon_names)
>>>>>>>    add_domain_logon_names:
>>>>>>>    Attempting to become logon server for workgroup
>> MRIRESEARCH on
>>>>>>> subnet UNICAST_SUBNET
>>>>>>> [2012/09/04 10:09:25.716768,  0]
>>>>>>> nmbd/nmbd_become_dmb.c:337(become_domain_master_browser_wins)
>>>>>>>    become_domain_master_browser_wins:
>>>>>>>    Attempting to become domain master browser on workgroup
>>>>>>> MRIRESEARCH, subnet UNICAST_SUBNET.
>>>>>>> [2012/09/04 10:09:25.716828,  0]
>>>>>>> nmbd/nmbd_become_dmb.c:351(become_domain_master_browser_wins)
>>>>>>>    become_domain_master_browser_wins: querying WINS
>> server from IP
>>>>>>> 0.0.0.0 for domain master browser name MRIRESEARCH<1b> on
>>>>> workgroup
>>>>>>> MRIRESEARCH
>>>>>>> [2012/09/04 10:09:25.722744,  0]
>>>>>>> nmbd/nmbd_logonnames.c:121(become_logon_server_success)
>>>>>>>    become_logon_server_success: Samba is now a logon server for
>>>>>>> workgroup MRIRESEARCH on subnet UNICAST_SUBNET
>>>>>>> [2012/09/04 10:09:25.722928,  0]
>>>>>>> nmbd/nmbd_become_dmb.c:235(become_domain_master_query_success)
>>>>>>>    become_domain_master_query_success:
>>>>>>>    There is already a domain master browser at IP
>>>>>>> 132.183.202.95 for workgroup MRIRESEARCH registered on subnet
>>>>>>> UNICAST_SUBNET.
>>>>>>> [2012/09/04 10:09:29.096239,  0]
>>>>>>> nmbd/nmbd_logonnames.c:121(become_logon_server_success)
>>>>>>>    become_logon_server_success: Samba is now a logon server for
>>>>>>> workgroup MRIRESEARCH on subnet 172.21.21.35
>>>>>>> [2012/09/04 10:09:29.096382,  0]
>>>>>>> nmbd/nmbd_logonnames.c:121(become_logon_server_success)
>>>>>>>    become_logon_server_success: Samba is now a logon server for
>>>>>>> workgroup MRIRESEARCH on subnet 192.168.0.150
>>>>>>> [2012/09/04 10:09:49.731244,  0]
>>>>>>> nmbd/nmbd_become_lmb.c:395(become_local_master_stage2)
>>>>>>>    *****
>>>>>>>
>>>>>>>    Samba name server PDC-NMR is now a local master browser for
>>>>>>> workgroup MRIRESEARCH on subnet 172.21.21.35
>>>>>>>
>>>>>>>    *****
>>>>>>> [2012/09/04 10:09:49.731468,  0]
>>>>>>> nmbd/nmbd_become_lmb.c:395(become_local_master_stage2)
>>>>>>>    *****
>>>>>>>
>>>>>>>    Samba name server PDC-NMR is now a local master browser for
>>>>>>> workgroup MRIRESEARCH on subnet 192.168.0.150
>>>>>>>
>>>>>>>    *****
>>>>>>> [2012/09/04 10:10:10.732440,  0]
>>>>>>> nmbd/nmbd_browsesync.c:247(domain_master_node_status_fail)
>>>>>>>    domain_master_node_status_fail:
>>>>>>>    Doing a node status request to the domain master browser
>>>>>>>    for workgroup MRIRESEARCH at IP 132.183.202.95 failed.
>>>>>>>    Cannot sync browser lists.
>>>>>>> [2012/09/04 10:10:10.732636,  0]
>>>>>>> nmbd/nmbd_browsesync.c:247(domain_master_node_status_fail)
>>>>>>>    domain_master_node_status_fail:
>>>>>>>    Doing a node status request to the domain master browser
>>>>>>>    for workgroup MRIRESEARCH at IP 132.183.202.95 failed.
>>>>>>>    Cannot sync browser lists.
>>>>>>>
>>>>>>> =============================================
>>>>>>>
>>>>>>> Where is it still getting the old IP address?
>>>>>>>
>>>>>>> The the clients are all set with
>>>>>>>
>>>>>>>     remote announce = 172.27.88.81
>>>>>>>     wins server = 172.27.88.81
>>>>>>>     security = domain
>>>>>>>     password server = pdc.nmr.mgh.harvard.edu
>>>>>>>     workgroup = MRIRESEARCH
>>>>>>>
>>>>>>> The WINS server is run by central IT group of the hospital
>>>>> and I have
>>>>>>> no control over it.
>>>>>>>
>>>>>>> DNS is properly changed:
>>>>>>>
>>>>>>> # host pdc.nmr.mgh.harvard.edu
>>>>>>> pdc.nmr.mgh.harvard.edu is an alias for
>>>>> raidsrv01.nmr.mgh.harvard.edu.
>>>>>>> raidsrv01.nmr.mgh.harvard.edu has address 172.21.21.35
>>>>>>>
>>>>>>> ---------------------------------------------------------------
>>>>>>> Paul Raines                     http://help.nmr.mgh.harvard.edu
>>>>>>> MGH/MIT/HMS Athinoula A. Martinos Center for Biomedical Imaging
>>>>>>> 149 (2301) 13th Street     Charlestown, MA 02129	    USA
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>>
>>>>>>> The information in this e-mail is intended only for the
>> person to
>>>>>>> whom it is addressed. If you believe this e-mail was sent
>>>>> to you in
>>>>>>> error and the e-mail contains patient information, please
>>>>> contact the
>>>>>>> Partners Compliance HelpLine at
>>>>>>> http://www.partners.org/complianceline . If the e-mail
>> was sent to
>>>>>>> you in error but does not contain patient information,
>>>>> please contact
>>>>>>> the sender and properly dispose of the e-mail.
>>>>>>>
>>>>>>> --
>>>>>>> To unsubscribe from this list go to the following URL
>> and read the
>>>>>>> instructions:  https://lists.samba.org/mailman/options/samba
>>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>>>
>>>>
>>>>
>>>
>> --
>> To unsubscribe from this list go to the following URL and read the
>> instructions:  https://lists.samba.org/mailman/options/samba
>>
>
>
>

More information about the samba mailing list