[Openstack-operators] [Large deployments] Openstack Large deployment using DVR

Satyanarayana Patibandla satya.patibandla at gmail.com
Tue Nov 1 16:22:18 UTC 2016

Thanks for your inputs. We will consider the below details while designing
our network. Our second option is to use L3 Agents with HA for routing.In
this approach, Currently most of the large openstack deployers are using
their own customized code for network segments. But we are planning to
segment/cluster/group our network nodes by assigning network node to
availability zones.  Did anyone used this approach in large /medium scale
deployments. Please let us know if you have any  suggestions or inputs on
this approach.

On Tue, Nov 1, 2016 at 7:51 PM, Kosnik, Lubosz <lubosz.kosnik at intel.com>

> Please just remember that today many high level features like LBaaSv2 +
> Octavia is not working [1] when you’re using DVR + L3/HA.
> Designing that cloud you need to remember that for today there is a huge
> chance that you will not be able to use anything except base L2/L3
> connectivity from networking perspective.
> [1] https://bugs.launchpad.net/neutron/+bug/1583694
> Regards.
> Lubosz Kosnik
> Cloud Software Engineer OSIC
> lubosz.kosnik at intel.com
> On Nov 1, 2016, at 8:39 AM, Satyanarayana Patibandla <
> satya.patibandla at gmail.com> wrote:
> Thanks for your response. We are assuming that if we use DVR with L3 HA
> there is no need of network segment/cluster. Could you please share your
> thoughts on this.
> On Tue, Nov 1, 2016 at 6:48 PM, Clayton O'Neill <clayton at oneill.net>
> wrote:
>> On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
>> <satya.patibandla at gmail.com> wrote:
>> > We are planning for a new Openstack large deployment ( Around 25 K
>> VMs). For
>> > external routing we want to use DVR for instances with floating IP and
>> > Network node L3 agent for instances with private IP. Our deployment is
>> DVR
>> > with L3 HA.It seems still many people not yet started using DVR in
>> > production for large deployments. Did anyone use DVR in their
>> Large/Medium
>> > production deployment. If you can share your experiences that will be
>> > helpful to us and that will save most of our time.
>> I've asked this question in operator sessions at the Summits and at
>> the NYC operators mid-cycle with not much response.  In the Neutron
>> feedback session last week, there was one person that said he was
>> running DVR, but that it had architectural issues with IPv6.  I got
>> the impression that his environment was much smaller than what you're
>> considering.
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