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

Tue Mar 1 02:39:46 PST 2011

Hi YE Lei,

First of all, I would like to clarify that OpenNebula is fully
open-source, not a limited edition of OpenNebulaPro, which is the
certified and supported version of OpenNebula, packaged with selected
addons. You can check the release notes of OpenNebulaPro here [1].

That being said, the oned's redundacy issue is a matter of the
architecture of the deployment. The community hasn't got (yet?) the
resources to take this into practice, and that is why C12G Labs
provides it through its professional services.

Regards,

-Tino

[1] https://support.opennebula.pro/entries/357059-opennebula-2-0-release-notes

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

On Tue, Mar 1, 2011 at 3:14 AM, YE LEI <Lei.Ye at alcatel-sbell.com.cn> wrote:
> Hi Tino,
> Thank you for your quick feedback,
> Just one question, do you mean that the ONE redundancy will be only provided by opennebula commercial edition from C12G labs, the open source branch will NOT go to this direction?
>
>
> Best Regards,
> YE Lei
>
>
> -----Original Message-----
> From: Tino Vazquez [mailto:tinova at opennebula.org]
> Sent: Monday, February 28, 2011 11:05 PM
> To: YE LEI
> Cc: users at lists.opennebula.org; Manikanta Kattamuri
> Subject: Re: [one-users] Does Opennebula 2.0.1 support disaster recovery?
>
> Hi,
>
> The upcoming 2.2 release will be focused on fault tolerance, it will
> provide the features covered in [1].
>
> The oned redundacy is being studied on some specific deployments, that
> expertise is available through C12G Labs [2].
>
> Regards,
>
> -Tino
>
> [1] http://opennebula.org/documentation:rel2.2:ftguide
> [2] http://c12g.com/
>
> --
> Constantino Vázquez Blanco, MSc
> OpenNebula Major Contributor
> www.OpenNebula.org | @tinova79
>
>
>
> On Mon, Feb 28, 2011 at 3:00 AM, YE LEI <Lei.Ye at alcatel-sbell.com.cn> wrote:
>> Hi Tino,
>> Do you have the schedule for these new features?
>>
>> Best Regards,
>> YE Lei
>>
>> -----Original Message-----
>> From: Tino Vazquez [mailto:tinova at opennebula.org]
>> Sent: Monday, February 21, 2011 7:48 PM
>> To: Manikanta Kattamuri
>> Cc: YE LEI; users at lists.opennebula.org
>> Subject: Re: [one-users] Does Opennebula 2.0.1 support disaster recovery?
>>
>> Hi,
>>
>> comments inline,
>>
>>
>> On Fri, Feb 18, 2011 at 4:52 AM, Manikanta Kattamuri
>> <mani.kattamuri at hexagrid.com> wrote:
>>> we have tried some poc's to achieve this sometime back
>>>
>>> 2011/2/17 Tino Vazquez <tinova at opennebula.org>
>>>>
>>>> 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.
>>>
>>>
>>> since place A and place B are quiet distant and we did not want to share the
>>> same file system, we used rsync to keep the disks in check. if the file
>>> system is a failure at place A then the latest image would used at placeB
>>> else the images are synced before starting.
>>>>
>>>> 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.
>>>>
>>> Can you give any pointers on this, as i have achieved it using a script
>>> above oned to detect failures and request place B to start the vm's after
>>> syncing with the current vm. I would like to know how oned can be configured
>>> to talk to placeB ( i suspect you are talking about hooks?).
>>
>> I was talking about a new set of drivers to enable this kind of behavior.
>>
>>>
>>>>
>>>> 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.
>>>>
>>> isn't this being discussed in another thread about oned redundancy?. which
>>> is presently not present in one.
>>
>> Sure, this is WIP
>>
>> Regards,
>>
>> -Tino
>>
>> --
>> Constantino Vázquez Blanco, MSc
>> OpenNebula Major Contributor  / Cloud Researcher
>> www.OpenNebula.org | @tinova79
>>
>>>>
>>>> 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
>>>> > _______________________________________________
>>>> > Users mailing list
>>>> > Users at lists.opennebula.org
>>>> > http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>>> >
>>>> _______________________________________________
>>>> Users mailing list
>>>> Users at lists.opennebula.org
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>>>
>>>
>>>
>>> --
>>> K Manikanta Swamy
>>> +919059014442
>>>
>>
>