[neutron] Static route not added in namespace using DVR on Wallaby

J-P Methot jp.methot at planethoster.info
Tue May 17 15:32:39 UTC 2022


Is your local environment on Wallaby? I might consider upgrading if it's 
more recent than that. We use Kolla to deploy so it might also play into 
this.

On 5/17/22 08:59, Slawek Kaplonski wrote:
>
> Hi,
>
>
> Dnia czwartek, 12 maja 2022 19:23:15 CEST J-P Methot pisze:
>
> > Hi,
>
> >
>
> > I got the debug logs. They were a bit too long so I put them in a txt
>
> > file. Please tell me if you'd prefer a pastebin instead.
>
> >
>
> > On 5/10/22 02:38, Slawek Kaplonski wrote:
>
> > > Hi,
>
> > >
>
> > > W dniu pon, 9 maj 2022 o 13:49:22 -0400 użytkownik J-P Methot
>
> > > <jp.methot at planethoster.info> napisał:
>
> > >>
>
> > >> I tested this on my own DVR test environment with a random static
>
> > >> route and I'm getting the same results as on production. Here's what
>
> > >> I get in the logs :
>
> > >>
>
> > >> 2022-05-09 17:28:50.018 691 INFO neutron.agent.l3.agent [-] Starting
>
> > >> processing update 41fcd10b-7db5-45d9-b23c-e22f34c45eec, action 3,
>
> > >> priority 1, update_id 9e112de1-f538-4a41-9526-152aa3937129. Wait 
> time
>
> > >> elapsed: 0.001
>
> > >> 2022-05-09 17:28:50.019 691 INFO neutron.agent.l3.agent [-] Starting
>
> > >> router update for 41fcd10b-7db5-45d9-b23c-e22f34c45eec, action 3,
>
> > >> priority 1, update_id 9e112de1-f538-4a41-9526-152aa3937129. Wait 
> time
>
> > >> elapsed: 0.002
>
> > >> 2022-05-09 17:28:51.640 691 INFO neutron.agent.l3.agent [-] Finished
>
> > >> a router update for 41fcd10b-7db5-45d9-b23c-e22f34c45eec, update_id
>
> > >> 9e112de1-f538-4a41-9526-152aa3937129. Time elapsed: 1.622
>
> > >>
>
> > >> As you can see, there was an attempt at updating the router and it
>
> > >> did return as successful. However, there was no new route added in
>
> > >> the router or floating ip namespace. No error either.
>
> > >>
>
> > > Can You do the same with debug logs enabled?
>
> > >
>
> > >> On 5/6/22 14:40, Slawek Kaplonski wrote:
>
> > >>> Hi,
>
> > >>>
>
> > >>> W dniu pią, 6 maj 2022 o 14:14:47 -0400 użytkownik J-P Methot
>
> > >>> <jp.methot at planethoster.info> napisał:
>
> > >>>>
>
> > >>>> Hi,
>
> > >>>>
>
> > >>>> We're in this situation where we are going to move some instances
>
> > >>>> from one openstack cluster to another. After this process, we want
>
> > >>>> our instances on the new openstack cluster to keep the same
>
> > >>>> floating IPs but also to be able to communicate with some 
> instances
>
> > >>>> that are in the same public IP range on the first cluster.
>
> > >>>>
>
> > >>>> To accomplish this, we want to add static routes like 'X.X.X.X/32
>
> > >>>> via Y.Y.Y.Y'. However, we're using DVR and when we add the static
>
> > >>>> routes, they do not show up anywhere in any of the namespaces. Is
>
> > >>>> there a different way to add static routes on DVR instead of using
>
> > >>>> openstack router add route ?
>
> > >>>>
>
> > >>> No, there is no other way to add static routes to the dvr router. I
>
> > >>> don't have any DVR deployment now to check it but IIRC route should
>
> > >>> be added in the qrouter namespace in the compute nodes where router
>
> > >>> exists. If it's not there please check logs of the l3-agent on 
> those
>
> > >>> hosts, maybe there are some errors there.
>
> > >>>> --
>
> > >>>> Jean-Philippe Méthot
>
> > >>>> Senior Openstack system administrator
>
> > >>>> Administrateur système Openstack sénior
>
> > >>>> PlanetHoster inc.
>
> > >>> --
>
> > >>> Slawek Kaplonski
>
> > >>> Principal Software Engineer
>
> > >>> Red Hat
>
> > >> --
>
> > >> Jean-Philippe Méthot
>
> > >> Senior Openstack system administrator
>
> > >> Administrateur système Openstack sénior
>
> > >> PlanetHoster inc.
>
> > >
>
> > > --
>
> > > Slawek Kaplonski
>
> > > Principal Software Engineer
>
> > > Red Hat
>
> >
>
> > --
>
> > Jean-Philippe Méthot
>
> > Senior Openstack system administrator
>
> > Administrateur système Openstack sénior
>
> > PlanetHoster inc.
>
> >
>
>
> I just tested it today on my local env and everything works fine for 
> me. When I added extra route to some external IP address it was added 
> in snat-XXX namespace,
>
> When I tested dvr router only with private networks, extra route was 
> added in the qrouter-XXX namespaces.
>
> Also, we have scenario test 
> https://github.com/openstack/neutron-tempest-plugin/blob/6dcc0e81b5f3c656181091025f351eb479cdde21/neutron_tempest_plugin/scenario/test_connectivity.py#L73 which 
> is creating such extra routes and uses them to connect between VMs. 
> And this test is running fine AFAIK in our CI.
>
>
> -- 
>
> Slawek Kaplonski
>
> Principal Software Engineer
>
> Red Hat
>
-- 
Jean-Philippe Méthot
Senior Openstack system administrator
Administrateur système Openstack sénior
PlanetHoster inc.
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