I do get both those messages followed by an exception error message:

EndpointNotFound: Could not find requested endpoint for any of the following interfaces: ['internal', 'public']

With this traceback from oslo.messaging.server:

Traceback (most recent call last):  
  File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 163, in _process_incoming
    res = self.dispatcher.dispatch(message)
  File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 220, in dispatch
    return self._do_dispatch(endpoint, method, ctxt, args)
  File "/usr/lib/python2.7/site-packages/oslo_messaging/rpc/dispatcher.py", line 190, in _do_dispatch
    result = func(ctxt, **new_args) 
  File "/opt/stack/nova/nova/exception_wrapper.py", line 76, in wrapped
    function_name, call_dict, binary)
  File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise
    six.reraise(self.type_, self.value, self.tb) 
  File "/opt/stack/nova/nova/exception_wrapper.py", line 67, in wrapped
    return f(self, context, *args, **kw)
  File "/opt/stack/nova/nova/compute/manager.py", line 186, in decorated_function
    "Error: %s", e, instance=instance)
  File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 
    six.reraise(self.type_, self.value, self.tb)
  File "/opt/stack/nova/nova/compute/manager.py", line 156, in decorated_function 
    return function(self, context, *args, **kwargs)
  File "/opt/stack/nova/nova/compute/utils.py", line 985, in decorated_function
    return function(self, context, *args, **kwargs)
  File "/opt/stack/nova/nova/compute/manager.py", line 214, in decorated_function
    kwargs['instance'], e, sys.exc_info())
  File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 220, in __exit__
    self.force_reraise()
  File "/usr/lib/python2.7/site-packages/oslo_utils/excutils.py", line 196, in force_reraise 
    six.reraise(self.type_, self.value, self.tb)
  File "/opt/stack/nova/nova/compute/manager.py", line 202, in decorated_function
    return function(self, context, *args, **kwargs) 
  File "/opt/stack/nova/nova/compute/manager.py", line 2616, in stop_instance
    do_stop_instance()
  File "/usr/lib/python2.7/site-packages/oslo_concurrency/lockutils.py", line 274, in inner
    return f(*args, **kwargs)
  File "/opt/stack/nova/nova/compute/manager.py", line 2598, in do_stop_instance
    "power_off.start")
  File "/opt/stack/nova/nova/compute/manager.py", line 1647, in _notify_about_instance_usage
    extra_usage_info=extra_usage_info, fault=fault)
  File "/opt/stack/nova/nova/compute/utils.py", line 325, in notify_about_instance_usage
    network_info, system_metadata, **extra_usage_info)
  File "/opt/stack/nova/nova/notifications/base.py", line 398, in info_from_instance
    context)
  File "/opt/stack/nova/nova/image/api.py", line 65, in generate_image_url
    return "%s/images/%s" % (next(glance.get_api_servers(context)),
  File "/opt/stack/nova/nova/image/glance.py", line 126, in get_api_servers
    endpoint = utils.get_endpoint(ksa_adap)
  File "/opt/stack/nova/nova/utils.py", line 1335, in get_endpoint
    "interfaces: %s" % interfaces)
EndpointNotFound: Could not find requested endpoint for any of the following interfaces: ['internal', 'public']

All services seem to be listed under public when using the command "openstack endpoint list", so I'm not sure where it's going wrong.