Open Stack

On Fri, 2022-03-04 at 17:37 +0000, Sean Mooney wrote:
> On Fri, 2022-03-04 at 17:07 +0000, Arnaud Morin wrote:
> > Hey all,
> > 
> > When I take a look at [1], I can see some parameters, such as
> > network_device_mtu, isolate_vif, etc.
> > 
> > As far as I can tell, nova is using these params when plugging the port
> > in OVS (if using OVS as ml2 plugin of course).
> > 
> > But I cannot find the config params in the documentation: [2]
> > 
> > Am I missing something?
> 
> no we dont currently generate that documenation currntly
> https://docs.openstack.org/nova/latest/configuration/config.html should list it but we have not added
> the appropriate namespaces to the list of namespaces for nova to generate.
> 
> to use these option today you create a [os_vif_ovs] section in your nova.conf
> we do that in devstack today 
> https://github.com/openstack/devstack/blob/master/lib/os-vif
> 
> so if you look at the nova-cpu.conf form one of our jobs you can see it set to false in this case since we are using ovn
> https://zuul.openstack.org/build/7ea68106815e492a8de73c28afffaa0a/log/controller/logs/etc/nova/nova-cpu_conf.txt#134-137
> 
> network_device_mtu is not used anymore that was for nova network and should be delete in the future.
> 
> ovsdb_connection = tcp:[::1]:6640
> isolate_vif = False
> ovsdb_interface = vsctl
> 
> are all valid to configure still.
> 
> i think we just need to add os-vif here
> https://github.com/openstack/nova/blob/a74bced0eb3232c0c3384e26db1838bbc26c2d82/doc/source/conf.py#L179-L197
> although i coudl be wrong.

actully i think we need to list the namespce here
https://github.com/openstack/nova/blob/a74bced0eb3232c0c3384e26db1838bbc26c2d82/etc/nova/nova-config-generator.conf#L17
in the sample nova-config generator config

i dont think its hard to fix that you just need to find the right place and added it but no one has done the work to figure it out
and push a patch.
> i know there is something we need to tweek to include options form opther project likel the messaging option in the config ref
> the os-vif docs are located here but we do not generate a sperate config ref
> https://docs.openstack.org/os-vif/xena/index.html
> > 
> > Cheers,
> > Arnaud.
> > 
> > [1] https://github.com/openstack/os-vif/blob/master/vif_plug_ovs/ovs.py
> > [2] https://docs.openstack.org/nova/latest/configuration/config.html
> > 
>