[ovn] external port always be scheduled on a single gateway

[Liu Xie]

At the moment, all external ports will be scheduled on a single gateway node since there’s only one HA Chassis Group for all of those ports.[1]
I think this issue could be solved like l3-ha [2].

[1]https://docs.openstack.org/neutron/latest/admin/ovn/sriov.html#known-limitations
[2]https://bugs.launchpad.net/networking-ovn/+bug/1762694

[Lucas Alvares Gomes (lucasagomes)]

Hi,

That´s correct, currently all external ports are scheduled on a single node because in OVN they are all included in a single HA_Chassis_Group (called default_ha_chassis_group).

But, this will soon change (I expect) with a patch adding support for Network AZs for the ML2/OVN driver [0] (sorry for the lacking of commit message there, I expect to finish this patch in the next days, atm it´s WIP).

But with that patch I want to create a HA Chassis Group per netowrk [1] where the external ports will be placed to. That way, we will no longer have a single node holding all the external ports in it.

[0] https://review.opendev.org/c/openstack/neutron/+/762550
[1] https://review.opendev.org/c/openstack/neutron/+/762550/6/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py

[Liu Xie (liushy)]

hi,
I want to know what is the current progress? Are there any plans?

[Brian Haley (brian-haley)]

Since the patch Lucas mentioned has merged I'll close this bug.