[one-users] Does Opennebula 2.0.1 support disaster recovery?

[Tino Vazquez]

Hi YE Lei,

The first issue that I see here is the migration, since it is
impossible to migrate a VM from a host that is down.

What is possible is the reestablishment of the service in placeB,
where the VM images should be previously placed (to avoid transferring
them, although this is possible as well), so only the VM state (in the
form of snapshots of memory, and deltas of what has changed in the
disk images since the VM was up) needs to be transferred. This
snapshots should reside in a shared filesystem (to avoid losing access
when the host is down), or synced in placeB using DRDB for instance.
OpenNebula at place A can detect that the hosts are down and start the
reestablishment of the service talking with the OpenNebula at place B.
This setup can be achieved with some minor adjustments to the
out-of-the-box OpenNebula.

For extra protection, the OpenNebula at placeA could be running two
instances in different servers, to avoid the fail in the disaster
recovery in case the OpenNebula front-end goes down.

This is an interesting use case, we will be happy to provide
assistance in the setup of this scenario.

Best regards,

-Tino

--
Constantino Vázquez Blanco, MSc
OpenNebula Major Contributor  / Cloud Researcher
www.OpenNebula.org | @tinova79



On Thu, Feb 17, 2011 at 10:22 AM, YE LEI <Lei.Ye at alcatel-sbell.com.cn> wrote:
> For example, we have a product (in VM) running in the servers on placeA,
> and in case disaster happens on placeA, all servers on placeA are
> damaged, could opennebula migrate this product to the severs on
> placeB(thousands miles away from placeA) which are managed by opennebula
> in the cloud?
>
> Best Regards,
> YE Lei
>
> -----Original Message-----
> From: Ignacio M. Llorente [mailto:imllorente at opennebula.org]
> Sent: Thursday, February 17, 2011 4:55 PM
> To: YE LEI
> Cc: users at lists.opennebula.org
> Subject: Re: [one-users] Does Opennebula 2.0.1 support disaster
> recovery?
>
> Please, could you elaborate on the use case for this? Which
> functionality would you require?
>
> Thanks
>
> On Thu, Feb 17, 2011 at 7:58 AM, YE LEI <Lei.Ye at alcatel-sbell.com.cn>
> wrote:
>> Hello,
>>
>> As mentioned in the mail title, does Opennebula 2.0.1 support disaster
>> recovery cross-regional?
>>
>> Best Regards,
>>
>> YE Lei
>>
>> _______________________________________________
>> Users mailing list
>> Users at lists.opennebula.org
>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>
>>
>
>
>
> --
> Ignacio M. Llorente, PhD, MBA
> Project co-Lead and Director
> OpenNebula - The Open Source Toolkit for Cloud Computing
> www.OpenNebula.org | imllorente at opennebula.org
> _______________________________________________
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>