Hi,

If I understood correctly, this operation does not incur a long downtime.

To setup the bond, first y

ou'll need to select the relevant host, select
Network Interfaces and click
Setup Host Networks. At this step, you should be presented with
NIC0 (eth0?) connected to
ovirtmgmt, and a standalone (and possibly down)
NIC1 (eth1

). Just drag and drop
NIC1 unto
NIC0, choose bond type and press
OK. After the bond is displayed, make sure you've selected both "
Verify connectivity between Host and Engine" and "
Save network configuration" options, and

again

press
OK

If all goes well, after the configuration you'll have a working bond with ovirtmgmt on top of it. You'll have to repeat this for all hosts you'll be configuring the new bond... All network downtime will be the total time of bringing down eth0, creating bond0 and bringing up bond0 - no more than a fraction of a minute normally. And this will only effect the guests on that particular Host, not the whole cluster.

A little side note on migrating from a single nic to a bond: if you plan to add more VLAN tagged virtual networks to your new bond, keep in mind that ovirtmgmt should also be VLAN tagged - you can not mix tagged and untagged networks on a single bond.

Regards,

On Mon, May 18, 2015 at 5:58 PM, Christophe TREFOIS <christophe.trefois@uni.lu> wrote:

Dear all,

How I would go about in an existing setup with 1 NIC and 1 vNIC ovirtmgmt, to add a second NIC, team them up (bonding) and then assign that one to ovirtmgmt without too much downtime?

Does anybody have some experience on that?

Thank you for your help,

—

Christophe

Dr Christophe Trefois, Dipl.-Ing.
Technical Specialist / Post-Doc

UNIVERSITÉ DU LUXEMBOURG

LUXEMBOURG CENTRE FOR SYSTEMS BIOMEIDINCE
Campus Belval | House of Biomedicine
7, avenue des Hauts-Fourneaux
L-4362 Esch-sur-Alzette
T: +352 46 66 44 6124
F: +352 46 66 44 6949
http://www.uni.lu/lcsb

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