[Samba] about samba failover

[Chan Min Wai]

Dear Nicolas,

1st of all.
There are 2 question in your statement.
1. AD DC Fail over (Only Domain Controller function with SysVol)
You cannot use any cluster files system on this, since we are still having
issue with CTDB working on AD DC.
You can only have 2 x AD DC (Sync Sysvol with Rsync)
http://wiki.samba.org/index.php/SysVol_Replication

-- This have been an argument for long.
Some users say Cluster replicated files system work (Provided that there is
only ONE DC is writing Sysvol on always)
Else it will cause some issue on sysvol. (I've personally had this...)



2. Domain member files server
You MUST use CTDB + other cluster files system to run this.
http://wiki.samba.org/index.php/Clustered_Samba

If you run 2 Samba without CTDB, even with cluster files system it will
just corrupted the open files.

Hope this help.



On Thu, Jun 26, 2014 at 1:40 PM, Daniel Müller <mueller at tropenklinik.de>
wrote:

> I am running with Openldap/samba3 PDC/BDC ucarp(for floating
> ip)/glusterfs!!!! on two centos hosts for years without any issue.
> Just was setting up a samba4 2DCs replicating with glusterfs (for file
> sharing) last 2 months. Running well so far
>
>
> 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
>
>
>
>
> -----Ursprüngliche Nachricht-----
> Von: samba-bounces at lists.samba.org [mailto:samba-bounces at lists.samba.org]
> Im
> Auftrag von me at electronico.nc
> Gesendet: Donnerstag, 26. Juni 2014 00:09
> An: samba at lists.samba.org
> Betreff: [Samba] about samba failover
>
> Hi all,
>
> As many of us, I'm trying to find a way to have a failover solution for a
> Samba domain.
>
> The actual choice has been (because of hardware cost) to have only 1
> physical xen-based server (ubuntu 14.04) that do (dom0) :
> - DHCP server (LAN)
> - NTP server
> - firewall
> - proxy
> - DNS server
> Then 4 VMs running for:
> - Samba Domain controller
> - Samba Domain member (file server)
> - Apache2 server
> - email server
>
> As all eggs are in the same basket (French talking), I've setup a 2nd
> xen-based server that uses DRBD/Pacemaker to provide the basic dom0
> functions.
>
> Now it's time about Samba ...
> ( I've read : https://wiki.samba.org/index.php/Clustered_Samba )  From
> other
> readings, it seems that GlusterFS is not actually a valid solution
> (permissions troubles from Windows side).
> I was wondering if setting up Samba VMs that would use a RAID1 DRBD network
> (RAID1 between xen-host1 and xen-host2) filesystem would be an acceptable
> solution.
>
> Thanks in advance for your thoughts.
>
> Nicolas
>
>
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