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

[Satyanarayana Patibandla]

Hi Kevin,

In your data center are you running only Openstack instances with floating
IPs. I am asking this question because you are not using L3 agent which
perform SNAT.

Thanks,
Satya.P

On Tue, Nov 1, 2016 at 9:19 PM, Fox, Kevin M <kevin@pnnl.gov> wrote:

> We're running dvr on one of our clouds. ~70 hypervisors currently and more
> getting ready to join. We have not played with dvr+l3ha as it was unstable
> at the time but once there is a migration path, we would like to go there.
>
> So far, DVR has seemed pretty stable and is performing well.
>
> Thanks,
> Kevin
> 
> From: Clayton O'Neill [clay...@oneill.net]
> Sent: Tuesday, November 01, 2016 6:18 AM
> To: Satyanarayana Patibandla
> Cc: openstack-operators@lists.openstack.org
> Subject: Re: [Openstack-operators] [Large deployments] Openstack Large
> deployment using DVR
>
> On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
> <satya.patiban...@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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Re: [Openstack-operators] [Large deployments] Openstack Large deployment using DVR

[Satyanarayana Patibandla]

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 
wrote:

> 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.kos...@intel.com
>
> On Nov 1, 2016, at 8:39 AM, Satyanarayana Patibandla <
> satya.patiban...@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 
> wrote:
>
>> On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
>>  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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> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>
>
>
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Re: [Openstack-operators] [Large deployments] Openstack Large deployment using DVR

[Kosnik, Lubosz]

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.kos...@intel.com

On Nov 1, 2016, at 8:39 AM, Satyanarayana Patibandla 
> 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 
> wrote:
On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
> 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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Re: [Openstack-operators] [Large deployments] Openstack Large deployment using DVR

[Satyanarayana Patibandla]

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  wrote:

> On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
>  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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Re: [Openstack-operators] [Large deployments] Openstack Large deployment using DVR

[Clayton O'Neill]

On Tue, Nov 1, 2016 at 7:19 AM, Satyanarayana Patibandla
 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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[Openstack-operators] [Large deployments] Openstack Large deployment using DVR

[Satyanarayana Patibandla]

Hi All,

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.

Thanks,
Satya.P
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