oslo.messaging socket close

[Amol Chobe]

We are using MOS 5.1

we noticed whenever we tried to attached cinder volume to VM we get "Failed to consume message from queue: Socket closed"

<180>Oct 29 18:31:56 node-5 nova-api 2014-10-29 14:31:56.502 4184 AUDIT nova.api.openstack.compute.contrib.volumes [req-efdb2274-ace8-4468-9366-fe16fa31e28b None] Attach volume fee009d6-2a84-471e-af40-76c7889de5a7 to instance 1a35d137-dedd-460f-af84-a0bb364b2e75 at None
<179>Oct 29 18:31:56 node-5 nova-api 2014-10-29 14:31:56.723 4184 ERROR oslo.messaging._drivers.impl_rabbit [req-efdb2274-ace8-4468-9366-fe16fa31e28b ] Failed to consume message from queue: Socket closed
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit Traceback (most recent call last):
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit File "/usr/lib/python2.7/dist-packages/oslo/messaging/_drivers/impl_rabbit.py", line 648, in ensure
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit return method(*args, **kwargs)
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit File "/usr/lib/python2.7/dist-packages/oslo/messaging/_drivers/impl_rabbit.py", line 737, in _consume
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit return self.connection.drain_events(timeout=timeout)
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit File "/usr/lib/python2.7/dist-packages/kombu/connection.py", line 279, in drain_events
2014-10-29 14:31:56.723 4184 TRACE oslo.messaging._drivers.impl_rabbit return self.transport.drain_events(self.connection, **kwargs)

This is happening regularly and can be reproduce . Rabbit MQ recovers itself afterwards .