Comment 6 for bug 1691971

I'm seeing a similar traceback which may be related and provide more information:

Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: 2017-07-12 17:18:03.814 1301 INFO werkzeug [-] 192.168.24.1 - - [12/Jul/2017 17:18:03] "OPTIONS / HTTP/1.0" 200 -
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: Traceback (most recent call last):
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/SocketServer.py", line 295, in _handle_request_noblock
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self.process_request(request, client_address)
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/SocketServer.py", line 321, in process_request
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self.finish_request(request, client_address)
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/SocketServer.py", line 334, in finish_request
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self.RequestHandlerClass(request, client_address, self)
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/SocketServer.py", line 651, in __init__
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self.finish()
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/SocketServer.py", line 710, in finish
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self.wfile.close()
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/socket.py", line 279, in close
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self.flush()
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib64/python2.7/socket.py", line 303, in flush
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: self._sock.sendall(view[write_offset:write_offset+buffer_size])
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib/python2.7/site-packages/eventlet/greenio/base.py", line 390, in sendall
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: tail = self.send(data, flags)
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib/python2.7/site-packages/eventlet/greenio/base.py", line 384, in send
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: return self._send_loop(self.fd.send, data, flags)
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: File "/usr/lib/python2.7/site-packages/eventlet/greenio/base.py", line 371, in _send_loop
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: return send_method(data, *args)
Jul 12 17:18:03 undercloud-split-stack.novalocal ironic-inspector[1301]: error: [Errno 32] Broken pipe