[Samba] Samba 4 replication causes bind dns to freeze

Nikos Mitas nkmitas at gmail.com
Tue Feb 25 02:36:26 MST 2014


Hi Daniel,

thanks for the suggestion,
I will check this right now, but both DNS servers are working fine until I
startup the third DC and replication starts.

two more things to check today is
a) dns_update samba process. but I dont know if I can safely disable it
(temporarily)
b) disable dns forwarders inside named.conf

Nikos Mitas


2014-02-25 8:39 GMT+02:00 Daniel Müller <mueller at tropenklinik.de>:

> I think some service takes the same port as bind!?
> In my case ,centos 6.4, it was portreserve. I switches it off and all
> started to work.
>
>
>
>
> EDV Daniel Müller
>
> Leitung EDV
> Tropenklinik Paul-Lechler-Krankenhaus
> Paul-Lechler-Str. 24
> 72076 Tübingen
> Tel.: 07071/206-463, Fax: 07071/206-499
> eMail: mueller at tropenklinik.de
> Internet: www.tropenklinik.de
> "Der Mensch ist die Medizin des Menschen"
>
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: samba-bounces at lists.samba.org [mailto:samba-bounces at lists.samba.org]
> Im
> Auftrag von Nikos Mitas
> Gesendet: Montag, 24. Februar 2014 23:10
> An: Marc Muehlfeld
> Cc: Samba
> Betreff: Re: [Samba] Samba 4 replication causes bind dns to freeze
>
> Missed the last questions......
>
> -Which DNS server have you configured as primary in your old and new DCs
> /etc/resolv.conf?
>
> on domain1 the ip of domain1
> on domain2 the ip of domain2
> on new dc, as it does not have dns, the ip of both old dc
>
> -Can you query the DNS on both hosts from each other?
>
> yes, i have followed this wiki page,
>
> https://wiki.samba.org/index.php/Samba4/HOWTO/Join_a_domain_as_a_DC
> host resolution, guid names resolution etc, is working
>
> -Any firewall stuff prevent from accessing port 53?
>
> No firewall, no SELinux.
>
> -Is the DLZ module for 9.9 enabled in /usr/local/samba/private/named.conf?
> Yes, i have comment for 9.8 and enabled 9.9
>
> -What Samba version are you running and is it self compiled or from where
> you got it?
>
> self compiled, samba 4.1.0
>
> The old dc pair is working since october without problems.
>
> Thanks
>
> Nikos
> On Feb 24, 2014 11:46 PM, "Marc Muehlfeld" <samba at marc-muehlfeld.de>
> wrote:
>
> > Hello Nikos,
> >
> > Am 24.02.2014 21:49, schrieb Nikos Mitas:
> >
> >> Joined a new samba 4 dc to an existing pair of samba 4 domain
> >> controllers, but i have a problem with replication.
> >>
> >
> > Is the replication working before it hangs ('samba tool drs showrepl')?
> >
> >
> >
> >
> >  5-10 minutes after starting samba services on the new samba 4 server,
> >> both   dns servers on the old Domain controllers freeze.  Nothing works.
> >>
> >> all i can do is to kill all the services (ntp,named,samba) and start
> >> over again.
> >>
> >> i get this message  on new dc in this file: /usr/local/samba/var/log.
> >> samba:
> >> ....
> >> dreplsrv_notify: Failed to send DsReplicaSync to
> >> 4d2038d4-3b1c-41a8-9865-142f7e9cadba._msdcs.example.com for
> >> DC=example,DC=com - NT_STATUS_IO_TIMEOUT : WERR_SEM_TIMEOUT .....
> >> environment:
> >> Redhat 6.5
> >> Bind with dlz v9.9.5
> >>
> >
> > Which DNS server have you configured as primary in your old and new
> > DCs /etc/resolv.conf?
> >
> > Can you query the DNS on both hosts from each other?
> >
> > Any firewall stuff prevent from accessing port 53?
> >
> > Is the DLZ module for 9.9 enabled in /usr/local/samba/private/named.conf?
> >
> > What Samba version are you running and is it self compiled or from
> > where you got it?
> >
> >
> > Regards,
> > Marc
> >
> >
> --
> 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