[ovirt-users] Communicate between the guest vm's hosted on, different hosts on different data centres using OVS

[Linov Suresh]

Hi Charles,

We use an Ethernet cable to connect between the hosts through 10G port.

We want to use the guest VM's hosted on different hosts 10G network. oVirt
already supports SR-IOV. So we should guest 10G speed for our VM's.

In KVM we can create a second bridge and add the 10G interface to the
bridge would do the trick.

But in oVirt how do we do this? We want to use our OVs network, which was
created using OVN Provider.


   Linov Suresh



On Thu, Apr 20, 2017 at 6:59 PM, Charles Tassell <ctassell at gmail.com> wrote:

> Hi Suresh,
>
>   You would need to connect the two OVN instances somehow.  If it's just
> two single hosts, I think the easiest way would be to create a VPN
> connection between the two hosts with OpenVPN or the like and then add the
> tun/tap interfaces into the OVN on each box.  You might run into problems
> if you start adding more hosts though, as if the host with the VPN goes
> down it would disconnect the two datacenters.
>
>   If the two datacenters are on the same physical network (ie, you just
> mean oVirt datacenter and not different colocation providers) then adding a
> VLAN to the NICs connected to the OVN interface would work.  You would
> probably have to setup some sort of channel bonding/LACP as you add more
> hosts, but OVN should be able to handle that simply enough.
>
> On 2017-04-20 07:33 PM, users-request at ovirt.org wrote:
>
>> Date: Thu, 20 Apr 2017 14:43:26 -0400
>> From: Linov Suresh <linov.suresh at gmail.com>
>> To: users at ovirt.org
>> Subject: [ovirt-users] Communicate between the guest vm's hosted on
>>         different hosts on different data centres using OVS
>> Message-ID:
>>         <CALdvvBP6MwbKa-P=q-UeZHMayZ3YPRpjersL0u=2srG=pcCnkQ at mail.
>> gmail.com>
>> Content-Type: text/plain; charset="utf-8"
>>
>> Hello,
>>
>> I have configured OVS network on oVirt 4.1.1, following the document
>> https://www.ovirt.org/blog/2016/11/ovirt-provider-ovn/
>>
>> I have created OVN Provider, and created new Logical Network for OVS using
>> OVN Provider. I have synced the network also selected OVS when I created
>> the cluster.
>>
>> I have two data centres and each data centre has one host each.
>>
>> Now I have created VM's selecting OVS network (not ovirtmgmt). VM's in the
>> same data centre can talk to each other.
>>
>> How do i make the VM's hosted on different data centre can talk to each
>> other?
>>
>> Appreciate your help in advance,
>>
>> Sincerely,
>>
>> Suresh.
>>
>
>
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