CTDB and the road ahead.

[Amitay Isaacs]

On Tue, Jan 22, 2013 at 10:09 AM, Taylor, Jonn <jonnt at taylortelephone.com>wrote:

>
> On 01/21/2013 04:46 PM, Andrew Bartlett wrote:
>
>> On Mon, 2013-01-21 at 15:41 -0600, Taylor, Jonn wrote:
>>
>>> On 01/20/2013 08:18 PM, Martin Schwenke wrote:
>>>
>>>> On Mon, 14 Jan 2013 17:27:52 -0600, "Christopher R. Hertel"
>>>> <crh at ubiqx.mn.org> wrote:
>>>>
>>>>  On 01/14/2013 05:06 PM, Amitay Isaacs wrote:
>>>>>
>>>>>> So
>>>>>> CTDB branch 1.13 (CTDB version 1.44) is now completely defunct and
>>>>>> should
>>>>>> not be used. I would prefer to do regular releases of CTDB 2.x (time
>>>>>> permitting). Currently 2.x releases are done from master which makes
>>>>>> it
>>>>>> easier to manage.
>>>>>>
>>>>> With my vendor hat on (and you know what color that is), I need to be
>>>>> able
>>>>> to identify a release of CTDB to ship with products.  I can back-port
>>>>> fixes,
>>>>> as needed, but I need a foundation from which to work.
>>>>>
>>>> There isn't much (any?) feature development being done.  Most of
>>>> the changes we're making are bug fixes, performance improvements or
>>>> code cleanups to improve maintainability.
>>>>
>>> What are the plans for CTDB to be used on a AD DC cluster on the new
>>> 4.0? I currently am running a 2 node cluster (samba 3.6+CTDB, DRDB
>>> active/active on CentOS5) that I would like to upgrade to 4.0 with AD
>>> but the notes say that this is not recommended.
>>>
>> Correct, you don't mix CTDB replication with the AD replication used in
>> the AD DC.
>>
>> If you are using CTDB, then your data is important enough to afford
>> distinct servers for your AD DC.  The two replication schemes cannot be
>> combined, they are at different layers.
>>
> Correct, I understand that. I am only interested in files server part to
> be on CTDB.
>
> dc1 = samba 4 AD DC
> dc2 = samba 4 AD DC
> SHR01 = CTDB(DC1 and DC2 fileserver)
>
> Is this possible? Otherwise I am looking at a XEN cluster/active failover
> with DRBD
>
>
>> You can of course use CTDB with a Samba 4.0 file server, in the same way
>> you can replicate a Samba 3.6 file server.
>>
>> The CTDB folks can fill you in on the status of CTDB with Samba 4.0, but
>> I understand it is fully supported.
>>
>> Andrew Bartlett
>>
>>
>
As mentioned by Andrew, do not use CTDB for samba4 AD.  If you are using a
same server for AD and file server, then you should not use CTDB.  You can
use CTDB with samba4 file server when it's a member server.

Amitay.