Re: [Xen-users] Cluster xen

[Outback Dingo <outbackdingo@xxxxxxxxx>]

On Mon, Mar 5, 2012 at 5:59 PM, Bart Coninckx <bart.coninckx@xxxxxxxxxx> wrote:
> On 03/05/12 23:41, netz-haut - stephan seitz wrote:
>
> Am Montag, den 05.03.2012, 20:52 +0100 schrieb Bart Coninckx:
>
>>> To help this fellow along, I will translate his post:
>>>
>>> Hello,
>>>
>>> I would like to implement a cluster with Xen or Xen server with two Dell
>>> R710 servers.
>>>
>>> I would like to build a cluster using the entire added diskspace of the
>>> two
>>> servers, as well as the total memory.
>>>
>>> What are your experiences and configurations for this?
>>>
>>> Thanks in advance,
>>>
>>> Regards,
>>>
>>> Mat
>>>
>>>
>>>
>>> Well Mat,
>>>
>>> I usually use DRBD and Pacemaker for this. You can load balance the
>>> cluster
>>> resources (being Xen DomU's) across the two nodes. For live migration you
>>> need dual primary.
>>> For dual primary you need stonith.
>>>
>>> Read up on http://www.clusterlabs.org
>>>
>>> B.
>>>
>>>
>>>
>>>
>> http://www.cloudstack.org/
>>
>>
>>>
>>>
>>> _______________________________________________
>>> Xen-users mailing list
>>> Xen-users@xxxxxxxxxxxxx
>>> http://lists.xen.org/xen-users
> I'm not familiar (yet) with Cloudstack, but
> http://cloudstack.org/cloudstack/requirements.html seems to state that
> the requirements are more than two servers. I guess this solution won't
> do Mat a lot of good, does it?
>
> cheers,
>
>
> B.
>
> You're right. To get useful benefits from using cloudstack, one would need
> *at least* one gateway/firewall,
> one management node, a primary storage (local, redundant like drbd
> master/master are not supported
> out of the box and need to be "hacked"), one secondary storage (nfs e.g.)
> and at least one switch capable
> of dynamic vlan registration (i forget, 802.something).
> Personally, I love cloudstack, but for the OP's needs, drbd master/master
> with a stonith (could be done via
> IPMI / iDRAC) would be a much better solution. For a two node cluster, i
> think, REMUS and/or Kemari projects
> are worth a try for failover scenarios.
>
>
>
>
> I'm actually having the same challenge as OP. What if you would run
> cloudstack ON a drbd master/master as a series of virtual machines? The main
> benefit would be easy provisioning, central management, snapshotting etc
>
>
> B.

Well at that point just throw XCP into the mix...... itll run from local disk

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