[ovs-discuss] cells v2 routing question

[Pedro Sousa]

Hi Numan,

sorry to insist, but maybe you, or someone on this mailing list can assist
me. Let me try to explain better my problem:

I have a nova cells deployment where I have the parent site and a remote
site cell, think about AZ1 and AZ2. The remote cell doesn't have a ovn-db
and it's connected to the primary, however it has it's own ovn-controller
and It's able to provision it's own router on the remote compute sites.

You can see the attached picture to understand better.

My question is, when I create a provider network on the primary site, am I
able to reach a vm that's on remote cell using a floating ip through the
geneve tunnel? I tested it, but it doesn't work.

In simple terms I would like a distributed routing on my deployment, when I
create router that's on a specific AZ, I want to access to a VM that's on
another AZ, through that router. Is this possible? Considering that are not
separate OVN deployments?

Thanks.

On Thu, Jan 21, 2021 at 4:31 PM Pedro Sousa <pgsousa at gmail.com> wrote:

> Hi Numan,
>
> you're right, I upgraded to ussuri and now I see the commands, however in
> the second site, which is an openstack cell, I don't see the bd, I only see
> an ovn-controller and ovn-metadata running on compute nodes.
>
> My understanding is that BD is on the central site only, and cell is
> connected to it.
>
> However, I want to create a provider network on the central site and that
> this network is routable from the primary site and reachable on the second
> site, which is a cell.
>
> My question is if this is possible.
>
> Thanks
>
> On Wed, Jan 20, 2021 at 5:41 AM Numan Siddique <numans at ovn.org> wrote:
>
>>
>>
>> On Tue, Jan 19, 2021 at 10:41 PM Pedro Sousa <pgsousa at gmail.com> wrote:
>>
>>> Hi Numan,
>>>
>>> I'm trying to follow the howto but I can't seem to find  ovn-ic-nbctl
>>> and  ovn-ic-sbctl commands.
>>>
>>> I'm using *openstack train* deployed with tripleo running containers:
>>>
>>>
>>> *tripleotraincentos8/centos-binary-ovn-controller:current-tripleo
>>>  kolla_start
>>> ovn_controllertripleotraincentos8/centos-binary-ovn-northd:current-tripleo
>>>          /bin/bash /usr/lo...         ovn-dbs-bundle-podman-0*
>>>
>>> Any hint where those commands might be or do I need to rebuild the
>>> container with it?
>>>
>>
>> What version of OVN does it have ? ovn-ic is available since OVN 20.03.
>>
>> Maybe it is not packaged in the openstack train OVN version. I'd suggest
>> to check out the OVN packages in the latest RDO
>> or building it yourself.
>>
>> Thanks
>> Numan
>>
>> Thanks
>>>
>>>
>>>
>>> On Mon, Jan 18, 2021 at 5:00 PM Numan Siddique <numans at ovn.org> wrote:
>>>
>>>>
>>>>
>>>> On Mon, Jan 18, 2021 at 10:25 PM Pedro Sousa <pgsousa at gmail.com> wrote:
>>>>
>>>>> Hi there,
>>>>>
>>>>> I'm using OVN with ovs in openstack train in 2 geographically distant
>>>>> sites, using cells v2 segregation.
>>>>>
>>>>> I configured a provider(external) VLAN network with floating ips on
>>>>> primary AZ site but I can only reach vms that run on that AZ, the remote
>>>>> vms on the secondary AZ are unreacheable.
>>>>>
>>>>> Is it possible using OVN routing, to reach the remote site vms from
>>>>> the primary site?
>>>>>
>>>>> Or do I need to use different provider networks for each AZ?
>>>>>
>>>>
>>>> Hi Pedro,
>>>>
>>>> You have 2 separate OVN based deployments and you want to interconnect
>>>> them ?
>>>>
>>>> If so, OVN has an interconnection feature for this. You can check this
>>>> out - https://docs.ovn.org/en/latest/tutorials/ovn-interconnection.html
>>>>
>>>> Thanks
>>>> Numan
>>>>
>>>>
>>>>> Thanks
>>>>> _______________________________________________
>>>>> discuss mailing list
>>>>> discuss at openvswitch.org
>>>>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>>>>>
>>>> _______________________________________________
>>> discuss mailing list
>>> discuss at openvswitch.org
>>> https://mail.openvswitch.org/mailman/listinfo/ovs-discuss
>>>
>>
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