[ovirt-users] How to add faster NIC to oVirt cluser / host?

[Christophe TREFOIS]

Hi Simone,

Just as a follow up on this because I am scared to mess something up.

When I put up p4p1 (10 GbE), I have no route to that IP, and I think it is because the default gateway is going through the other NIC.

If I change the ovirtmgmt logical network in the GUI of the engine, I might loose connectivity to the engine I suppose.

Is it possible to carry-out this networking change from the host-console that runs the engine?

Or do you have any alternative solution where I am able to regain access in case the switch to p4p1 would fail?

Thank you,

—
Christophe

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

UNIVERSITÉ DU LUXEMBOURG

LUXEMBOURG CENTRE FOR SYSTEMS BIOMEDICINE
Campus Belval | House of Biomedicine
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On 25 Nov 2015, at 12:20, Simone Tiraboschi <stirabos at redhat.com<mailto:stirabos at redhat.com>> wrote:



On Mon, Nov 23, 2015 at 7:29 PM, Christophe TREFOIS <christophe.trefois at uni.lu<mailto:christophe.trefois at uni.lu>> wrote:
Dear all,

I have currently a data center with two clusters and each cluster had 1 host.

On one of the hosts, I now enabled 10 GbE NIC called p4p1. Currently everything is going over a 1 GbE NIC called em1 (ovirtmgmt).

My question now is, how I could add my 10 GbE NIC to the setup for instance to use for transferring data during transmissions to export domain or to simply replace the 1 GbE?

You can simply edit the network bindings from the engine:
http://www.ovirt.org/OVirt_Administration_Guide#Editing_Host_Network_Interfaces_and_Assigning_Logical_Networks_to_Hosts

Is up to you to choose if you want just to use the 10 GbE NIC or if you prefer to create two distinct logical networks or an active-backup bond of the two interfaces.


I prefer little downtime (eg only temp network loss), but a full downtime (shutting down) could be acceptable.

Thank you for any pointers or starting points you could provide,

Kind regards,

—
Christophe
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