[one-users] V4.4: Bridge Configuration/physical device attach in VLAN driver on existing bridge

[Jaime Melis]

Hi Michael,

thanks for the contribution!

I've just create a ticket to evaluate it for OpenNebula 4.6:
http://dev.opennebula.org/issues/2574

Cheers,
Jaime


On Fri, Dec 13, 2013 at 11:02 AM, Michael Kutzner <
michael.kutzner at virtion.de> wrote:

> Hello,
>
> we had some problems in the past deploying VMs when a bridge interface was
> already existing (static configuration e.g.) using a different interface as
> physical than defined in the virtual network in ON.
>
> Example:
> - A bridge br10 was existing with a local interface eth0 attached.
> - The virtual network in opennebula was configured to use eth1.
>   (due to some historical or physical reasons eth0 was used on that host
>   and the bridge was „preconfigured“)
>
> The ON driver (opennebula-4.4.0/src/vnm_mad/remotes/802.1Q/HostManaged.rb)
> now checks the following:
> - bridge exists: no, create bridge
>   This works fine as the bridge is already existing
> - device is attached?
>   No, attach it (so we have eth0 and eth1 attached to the bridge interface
> afterwards)
>   This leads to some small (or bigger) problems (e.g. creating a loop on
> the switches and making
>   the network practically unusable).
>
> Attached you find a small patch which does the following:
> - bridge exists?
>   Yes, do nothing
> - no: create bridge, add interface
>
> This will also cover the scenario that you can change the physical device
> in the virtual
> network definition after having deployed certain VMs.
>
> Hopefully I did it right and made the changes in the right place.
>
> I dont know, if anybody else had that problem, but I wanted to share this
> information.
>
> Best, Michael
>
>
> _______________________________________________
> Users mailing list
> Users at lists.opennebula.org
> http://lists.opennebula.org/listinfo.cgi/users-opennebula.org
>
>


-- 
Jaime Melis
C12G Labs - Flexible Enterprise Cloud Made Simple
http://www.c12g.com | jmelis at c12g.com

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