running keystone-all on already running instance produces stack trace

[Adam Young]

Running on an already running instance, produces an exception (port already in use):
[root@ykaul-os-keystone ~]# keystone-all -v
Traceback (most recent call last):
  File "/usr/bin/keystone-all", line 104, in <module>
    serve(*servers)
  File "/usr/bin/keystone-all", line 52, in serve
    server.start()
  File "/usr/lib/python2.6/site-packages/keystone/common/wsgi.py", line 70, in start
    socket = eventlet.listen((self.host, self.port), backlog=backlog)
  File "/usr/lib/python2.6/site-packages/eventlet/convenience.py", line 38, in listen
    sock.bind(addr)
  File "<string>", line 1, in bind
socket.error: [Errno 98] Address already in use

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/31641

[Dolph Mathews (dolph)]

Unassigning due to inactivity.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/48614

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/48614
Committed: http://github.com/openstack/keystone/commit/1de911b9626e0597593d0f199b21b92e6f8cc646
Submitter: Jenkins
Branch: master

commit 1de911b9626e0597593d0f199b21b92e6f8cc646
Author: Lei Zhang <email address hidden>
Date: Fri Sep 27 17:54:16 2013 +0800

    Catch the socket exception and log it.

    Closes-Bug: #1186394
    Change-Id: I8aefe54deaa44427c6bb92cf439545e94902fb52