Open Stack

Hi Sean,

In my last email I forgot to add the openstack discussion email so I sent
it again.
I am really great ful for the insight you have provided.
I will check the links and ml2/ovs ml2/ovn support mentioned by you.


Thanks,
Hrishikesh

On Fri, Aug 27, 2021, 7:41 PM Sean Mooney <smooney at redhat.com> wrote:

> On Fri, 2021-08-27 at 19:09 +0530, Hrishikesh Karanjikar wrote:
> > Hi Sean,
> >
> > Thanks a lot for the clarification.
> > I am wondering how smart nics attached to a compute node (which runs
> > ovs-dpdk) can be configured using sdn controllers so that the
> > ovs/tunneling/ipsec functionality on the compute node is offloaded to
> > smartnic and compute node cpu is free to do other stuffs?
>
> i responed privatly too but what you are discribing is hardware offloaded
> ovs
> https://docs.openstack.org/neutron/latest/admin/config-ovs-offload.html
> which is supported by ml2/ovs and ml2/ovn although with most testign done
> with ml2/ovs
>
> in general this feature is not compatible with sdn contolers today
> although as i noted
> in my other respocne contrail has limited support for hardwar offload with
> there vrouter solution
> but i generally do not recommend that  solution since it has miniumal
> testing upstream.
>
> there is some other work to move ovs entirely to run on the smart nics
> where those smatnics have
> embded arm cores. that work is very much not ready for production and
> still under design
> there are 3 competting approches to taht on via ironic one via cybrog and
> one in nova.
> they all work slightly differnetly and serve slightly differnt usecase and
> hardware.
>
> if you want somethin you can use today or even in the next 12 months you
> want hardware offload
> ovs with ml2/ovs or possibel ml2/ovn although ovn support for hardware
> offload is much newer and
> less well tested although long term that is likely where more of the
> investment will go.
>
> >
> > Thanks,
> > Hrishikesh
> >
> > On Fri, Aug 27, 2021 at 5:38 PM Sean Mooney <smooney at redhat.com> wrote:
> >
> > > On Fri, 2021-08-27 at 13:03 +0530, Hrishikesh Karanjikar wrote:
> > > > Hi Slawek,
> > > >
> > > > Thanks for your reply.
> > > > Can you guide Which SDN controller is best and supported in Netron
> via
> > > ML2
> > > > plugin/driver.
> > >
> > > in general the design of openstack/neutron is such that it owns the ovs
> > > bridges and
> > > flow rules and you as a openstack operator shoudl not need to manage
> > > anything.
> > >
> > > neutron itself is an sdn contoler that allows self service network
> > > configureation vai
> > > its rest api and an abstraction layer between the end user and
> underlying
> > > implemantion.
> > >
> > > it can delegate the swich configuration to external sdn contoler but
> even
> > > in that case
> > > you are not intned to modify flows on the integration bridge via the
> sdn
> > > contoler manually.
> > >
> > > the sdn contoler can be used to manage your top of rack swithc and
> other
> > > infrasturue not managed
> > > by neutron but there is ment to be a seperation of concerns. all
> > > networking on comptue nodes shoudl be
> > > manageged via the neutron api and only your datacenter infrastucrue
> should
> > > be manageve by you via the
> > > sdn contoelr.
> > >
> > >
> > > >
> > > > Thanks,
> > > > Hrishikesh
> > > >
> > > > On Fri, Aug 27, 2021 at 12:18 PM Slawek Kaplonski <
> skaplons at redhat.com>
> > > > wrote:
> > > >
> > > > > Hi,
> > > > >
> > > > > On piątek, 27 sierpnia 2021 07:18:10 CEST Hrishikesh Karanjikar
> wrote:
> > > > > > Hi Sean,
> > > > > >
> > > > > > I am new to this domain.
> > > > > > My use case is simple,
> > > > > >
> > > > > > I have a node that runs OvS and I want to manage the flows
> remotely
> > > using
> > > > > > an SDN controller.
> > > > > > Initially I tried with ODL but it does not have a Web UI like
> ONOS
> > > has.
> > > > > > So I was using ONOS.
> > > > > > I am not sure if Neutron would do the same. If it is possible
> then I
> > > will
> > > > > > not need any other SDN controller.
> > > > >
> > > > > Neutron is generally providing connectivity for Your
> VMs/routers/etc
> > > and
> > > > > it
> > > > > may use different backend. If You will use e.g. ML2 plugin with OVN
> > > > > backend,
> > > > > Neutron will configure OVN and OVN will then configure flows in
> OVS on
> > > the
> > > > > nodes
> > > > > to achieve that.
> > > > > But if You are looking for a tool which will allow You to see
> OpenFlow
> > > > > rules
> > > > > on each node, and manipulate them with some GUI, then Neutron is
> not
> > > for
> > > > > You.
> > > > > It don't have such functionality.
> > > > >
> > > > > >
> > > > > > I am not doing any deployment yet.
> > > > > >
> > > > > > Thanks,
> > > > > > Hrishikesh
> > > > > >
> > > > > > On Thu, Aug 26, 2021 at 5:00 PM Sean Mooney <smooney at redhat.com>
> > > wrote:
> > > > > > > On Thu, 2021-08-26 at 16:41 +0530, Hrishikesh Karanjikar wrote:
> > > > > > > > Hi Sean,
> > > > > > > >
> > > > > > > > Thanks for your reply.
> > > > > > > > I was expecting the same answer as I also read the github
> link
> > > you
> > > > > sent.
> > > > > > > > I may need to try older versions of openstack in that case.
> > > > > > >
> > > > > > > do you specificaly need onos for some reason.
> > > > > > >
> > > > > > > if not i would not suggest building a production deployment
> with
> > > > > something
> > > > > > > that realiticlly is
> > > > > > > very unlikely to ever be supported again. you basically will be
> > > stuck
> > > > > on
> > > > > > > train with no upgrade
> > > > > > > path.
> > > > > > >
> > > > > > > > Hrishikesh
> > > > > > > >
> > > > > > > > On Thu, Aug 26, 2021 at 4:27 PM Sean Mooney <
> smooney at redhat.com>
> > > > > wrote:
> > > > > > > > > On Thu, 2021-08-26 at 15:31 +0530, Hrishikesh Karanjikar
> wrote:
> > > > > > > > > > Hi,
> > > > > > > > > >
> > > > > > > > > > Does Openstack latest release support ONOS?
> > > > > > > > >
> > > > > > > > > the short answer is no
> > > > > > > > > technially upstream has never supported it because it was
> a big
> > > > > tent
> > > > > > > > > projec that was
> > > > > > > > > never an offical deliverable of the netwroking team.
> > > > > > > > > https://github.com/openstack-archive/networking-onos has
> been
> > > > > retired
> > > > > > > > > as has https://opendev.org/openstack/networking-onos. the
> last
> > > > > release
> > > > > > > > > seams to have been from train but
> > > > > > > > > even then im not sure that it was still active.
> > > > > > > > > it looks like the onos projecct move the openstack install
> info
> > > > > under
> > > > > > >
> > > > > > > teh
> > > > > > >
> > > > > > > > > obsolete paages
> > > > > > >
> > > > > > >
> > > > >
> > >
> https://wiki.onosproject.org/display/ONOS/networking-onos+install+guides+per
> > > > > > > +each+OpenStack+version>
> > > > > > > > > so it does not look like the intend to support openstack
> > > anymore.
> > > > >
> > > > >
> > > > > --
> > > > > Slawek Kaplonski
> > > > > Principal Software Engineer
> > > > > Red Hat
> > > >
> > > >
> > > >
> > >
> > >
> > >
> >
>
>
>
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