[one-users] VNET_HOOK script?

[Carlos Martín Sánchez]

Hi,

On Wed, Sep 4, 2013 at 6:03 PM, Dmitri Chebotarov <dchebota at gmu.edu> wrote:
>
> Does anyone have an example script on how to use VNET_HOOK?
>
> I need to make custom changes for a OVS's flows when a VM started or
> migrated to other host.
>

I think that you need to use a VM hook [1] instead. The VNet hooks can only
be triggered when a network is created or deleted.

You can create a hook ON RUNNING, it will work for VMs reaching this state
on the first boot, or after a (live) migration.
If you need more fine-tuning, you may want to create a ON CUSTOM hook, and
provide your script with the previous states. This could be used to perform
different actions for a normal boot and for a migration.

Regards

[1] http://opennebula.org/documentation:rel4.2:hooks

--
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September, 2013
--
Carlos Martín, MSc
Project Engineer
OpenNebula - The Open-source Solution for Data Center Virtualization
www.OpenNebula.org | cmartin at opennebula.org |
@OpenNebula<http://twitter.com/opennebula><cmartin at opennebula.org>


On Wed, Sep 4, 2013 at 6:03 PM, Dmitri Chebotarov <dchebota at gmu.edu> wrote:

>  Hi
>
>  Does anyone have an example script on how to use VNET_HOOK?
>
>  I need to make custom changes for a OVS's flows when a VM started or
> migrated to other host.
> In particular I would like to undo MAC_spoofing rule for a VM (based on
> VM's custom attribute/tag):
>
>  sudo /usr/bin/ovs-ofctl add-flow br0
> in_port=207,dl_src=00:50:56:00:10:5d,priority=40000,actions=normal
> sudo /usr/bin/ovs-ofctl add-flow br0
> in_port=207,priority=39000,actions=drop
>
>  I think the script associated with VNET_HOOK needs to access VM's
> attributes and in_port value...
>
>  Thanks.
>
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>
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