object-server servers_per_port Unable to bind to port floods logs

[clayg]

We had a node with a hardeware issue in the network stack

2021-08-20T16:08:04.426373+00:00 ss0217 object-server: crit Unable to bind to port 6015: [Errno 99] Cannot assign requested address

^ like 3k/s

I can get in a tightloop spewing logs with

  diff --git a/swift/common/wsgi.py b/swift/common/wsgi.py
  index bce2f151a..519a23773 100644
  --- a/swift/common/wsgi.py
  +++ b/swift/common/wsgi.py
  @@ -906,6 +906,7 @@ class ServersPerPortStrategy(StrategyBase):
           self.bind_ports = self.cache.all_bind_ports_for_node()

       def _bind_port(self, port):
  + asdf
           new_conf = self.conf.copy()
           new_conf['bind_port'] = port
           return get_socket(new_conf)

it'd be better if the service could tell it's broken and try to die

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.opendev.org/c/openstack/swift/+/805441