[Samba] Replicated Failover Domain Controller and file server using LDAP
L.P.H. van Belle
belle at bazuin.nl
Wed Sep 17 08:32:57 MDT 2014
Are you using BIND dns, if so, please check if
The "check-names ignore" option enabled this is required to permit underscores in the DNS names.
Louis
>-----Oorspronkelijk bericht-----
>Van: gary.wright at tmxatrium.com
>[mailto:samba-bounces at lists.samba.org] Namens Gary Wright
>Verzonden: woensdag 27 augustus 2014 13:55
>Aan: samba at lists.samba.org
>Onderwerp: [Samba] Replicated Failover Domain Controller and
>file server using LDAP
>
>Hi All
>
>thought I'd post my results from following your notes when
>trying to replicate my Samba PDC onto a Samba BDC as seen here
>
>https://wiki.samba.org/index.php/1.0._Configuring_Samba
>
>everything seemed to work as described until I got into the
>'Initialization LDAP Database' and preloading the edited
>"preload-differentialdesign.ldif" file, kept getting a failure
>from the
>
>"dn: sambaDomainName= DDESIGN ,ou=Domains,dc=
>differentialdesign ,dc= org "
>
>section, no matter what options I used.
>
>Looking at my /var/log/messages on both my DC1 & DC2 I could
>see continual errors trying to access our either of our 2 DNS
>servers (example below)
>
>Aug 25 16:37:55 dc1 samba[2009]: [2014/08/25 16:37:55.120350,
>0] ../lib/util/util_runcmd.c:317(samba_runcmd_io_handler)
>Aug 25 16:37:55 dc1 samba[2009]:
>/usr/local/samba/sbin/samba_dnsupdate: 25-Aug-2014
>16:37:55.120 dispatch 0x7f3734031db0: shutting down due to TCP
>receive error: 10.5.31.11#53: connection reset
>Aug 25 16:37:55 dc1 samba[2009]: [2014/08/25 16:37:55.120519,
>0] ../lib/util/util_runcmd.c:317(samba_runcmd_io_handler)
>Aug 25 16:37:55 dc1 samba[2009]:
>/usr/local/samba/sbin/samba_dnsupdate: ; Communication with
>10.5.31.11#53 failed: unexpected error
>
>though both DNS servers were accessible and resolving
>addresses perfectly normally.
>
>I started to troubleshoot the samba status more closely and
>came across the 'samba_dnsupdate --verbose' command. This gave
>me a detailed list failures/successes trying to access DNS
>server records from both DC's
>
>[root at dc1 ~]# samba_dnsupdate --verbose
>IPs: ['10.5.15.11']
>Looking for DNS entry A tmxatrium.lan 10.5.15.11 as tmxatrium.lan.
>Looking for DNS entry A dc1.tmxatrium.lan 10.5.15.11 as
>dc1.tmxatrium.lan.
>Looking for DNS entry A gc._msdcs.tmxatrium.lan 10.5.15.11 as
>gc._msdcs.tmxatrium.lan.
>Failed to find matching DNS entry A gc._msdcs.tmxatrium.lan
>10.5.15.11 as gc._msdcs.tmxatrium.lan
>Looking for DNS entry CNAME
>7e32e874-8f2b-459f-b54f-bc96162e4afb._msdcs.tmxatrium.lan
>dc1.tmxatrium.lan as
>7e32e874-8f2b-459f-b54f-bc96162e4afb._msdcs.tmxatrium.lan.
>Failed to find DNS entry CNAME
>7e32e874-8f2b-459f-b54f-bc96162e4afb._msdcs.tmxatrium.lan
>dc1.tmxatrium.lan
>etc
>etc
>
>
>I then simply created the DNS records for each of the failures
>then restarted SAMBA on my BDC, et voila my account
>information replicated perfectly.
>
>I'm clearly not using LDAP but I'm not sure I actually need to
>?? Is there any advantage ??
>
>
>Regards
>
>Gary
>
>
>
>Gary Wright
>
>
>System Administrator
>
>
>7th floor, Becket House, 36 Old Jewry
>
>London, UK, EC2R 8DD
>
>
>
>
>
>??? gary.wright @tmxatrium.com
>
>
>Office: +44 203 194 2536
>Mobile: +44 7823 773 262
>
>
>
>
>
>
>
>
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