ERROR neutron ModuleNotFoundError: No module named 'networking_ovn'

Question

I want to integrate OpenStack and Ovn according to OpenStack official tutorial for integrating ovn into OpenStack. However, when I start neutron-server.service, the following error(from /var/log/neutron/server.log) occurs.

2023-04-22 22:04:01.116 55307 ERROR neutron_lib.utils.runtime [req-ef765084-f8aa-4131-b616-9df7ece0cb43 - - - - -] Error loading class by alias: stevedore.exception.NoMatches: No 'neutron.service_plugins' driver found, looking for 'networking_ovn.l3.l3_ovn.OVNL3RouterPlugin'

Here is my neutron.config:

[DEFAULT]

#
# From oslo.log
#

core_plugin = neutron.plugins.ml2.plugin.Ml2Plugin
service_plugins =networking_ovn.l3.l3_ovn.OVNL3RouterPlugin
transport_url = rabbit://openstack:abcdefg@controller
auth_strategy = keystone
notify_nova_on_port_status_changes = true
notify_nova_on_port_data_changes = true

How can l slove this problem.

Answer 1

Apparently, the doc you found has been retired (which isn't obvious to me except the last page update from 2019). The correct guide is this. So the correct plugin configs are:

core_plugin = ml2 
service_plugins = ovn-router