[one-users] OpenNebuka Hosted-VLAN support

[Jaime Melis]

Hello Patrice,

you make very valid points and we're aware of those limitations. They have
actually been reflected on the documentation:
http://opennebula.org/documentation:rel3.0:nm#considerations_limitations

The problem is that the network management is based on the hook subsystem,
but we have realized there should be a specific driver for networking. We
have created a feature ticket to develop this functionality:
http://dev.opennebula.org/issues/863
The target release for this functionality is OpenNebula 3.2.

For the moment, in OpenNebula 3.0, the only solution to the aforementioned
problems is to create a static network configuration.

Regards,
Jaime

On Mon, Oct 17, 2011 at 5:59 PM, Patrice LACHANCE <patlachance at gmail.com>wrote:

> Hello
>
> In previous version there was a cluster feature that was replaced in
> OpenNebula 3.0 by ozones.
> Shouldn't opennebula make sure that all the nodes in a zone are able to run
> a vm and thus handle network creation on all nodes before starting a new VM?
>
> Patrice
>
> 2011/9/27 Alberto Picón Couselo <alpicon1 at gmail.com>
>
>> **
>> Hello,
>>
>> We are testing hosted VLAN support in OpenNebula to implement network
>> isolation. This feature seems to work correctly when a new instance is
>> deployed, as it is stated in oned.conf, hm-vlan hook is executed in PROLOG
>> state.
>>
>> However, there are another states where VLANs and bridges should be
>> created (or its existence checked) before executing a concrete operation:
>>
>> * Migration/Live migration of an instance to a hypervisor where VLAN and
>> bridge of the instance has never been created
>> VLAN and bridge existence should be checked and created if necessary
>> before migration is executed. Opennebula 3.0 RC1 performs migration without
>> doing these checks and fails to migrate/live migrate the instance, leaving
>> it in a FAILED state.
>>
>> * A failed instance cannot be redeployed to a hypervisor where VLAN and
>> bridge of the instance has never been created
>> VLAN and bridge existence should be checked and created if necessary to
>> redeploy the image to the selected hypervisor.
>>
>> * A stopped instance cannot be resumed if VLAN and bridge of the instance
>> does not exist.
>> If we stop all instances of a concrete hypervisor and reboot the
>> hypervisor for maintenance purposes, all bridges and VLANs will be deleted.
>> Stopped instances won't resume because VLANs and bridges requirements are
>> not satisfied and will enter in a FAILED state (performing a deletion of non
>> persistent disks; BTW, we have removed deletion lines in tm_delete script
>> for the moment, :D).
>>
>> So, VLAN and bridge existence should be checked and created if necessary
>> to resume/migrate/livemigrate/recover_from_failed_state the instance to the
>> selected hypervisor. As it is stated in oned.conf, hm-vlan hook could be
>> executed on:
>>
>> # Virtual Machine Hooks (VM_HOOK) defined by:
>> #   name      : for the hook, useful to track the hook (OPTIONAL)
>> #   on        : when the hook should be executed,
>> #               - CREATE, when the VM is created (onevm create)
>> #               - PROLOG, when the VM is in the prolog state
>> #               - RUNNING, after the VM is successfully booted
>> #               - SHUTDOWN, after the VM is shutdown
>> #               - STOP, after the VM is stopped (including VM image
>> transfers)
>> #               - DONE, after the VM is deleted or shutdown
>> #               - FAILED, when the VM enters the failed state
>>
>> But I'm not able to find a procedure to implement these functionalities in
>> oned.conf for the states I mentioned.
>>
>> Please, can you give me any clues?
>>
>> Best Regards,
>> Alberto Picón
>>
>>
>>
>> _______________________________________________
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>> Users at lists.opennebula.org
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>>
>>
>
>
> --
> Patrice LACHANCE
> Manager IT Consulting, Logica : http://www.logica.com
>
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-- 
Jaime Melis
Project Engineer
OpenNebula - The Open Source Toolkit for Cloud Computing
www.OpenNebula.org | jmelis at opennebula.org
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