Comment 9 for bug 1907686

While looking to reproduce this issue we found this in the logs of both the neutron-ovn-metadata-agent and neutron-server:

2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection [-] (111, 'ECONNREFUSED'): OpenSSL.SSL.SysCallError: (111, 'ECONNREFUSED')
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection Traceback (most recent call last):
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/ovsdbapp/backend/ovs_idl/connection.py", line 106, in run
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection self.idl.run()
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/ovs/db/idl.py", line 240, in run
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection self._session.run()
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/ovs/jsonrpc.py", line 532, in run
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection self.__connect()
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/ovs/jsonrpc.py", line 467, in __connect
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection error, self.stream = ovs.stream.Stream.open(name)
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/ovs/stream.py", line 192, in open
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection err = ovs.socket_util.check_connection_completion(sock)
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/ovs/socket_util.py", line 181, in check_connection_completion
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection sock.send("\0".encode(), socket.MSG_DONTWAIT)
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/OpenSSL/SSL.py", line 1737, in send
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection self._raise_ssl_error(self._ssl, result)
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection File "/usr/lib/python3/dist-packages/OpenSSL/SSL.py", line 1639, in _raise_ssl_error
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection raise SysCallError(errno, errorcode.get(errno))
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection OpenSSL.SSL.SysCallError: (111, 'ECONNREFUSED')
2021-03-16 10:56:45.465 270932 ERROR ovsdbapp.backend.ovs_idl.connection

I suspect the log excerpts printed in comments above is fallout from this condition and that both issues will go away with a fixed python-ovs.