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

[Tino Vazquez]

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
>>> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>>
>>
>>
>> --
>> K Manikanta Swamy
>> +919059014442
>>
>