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[Bug 1586979] Re: AMQP 2.0 prevents services from starting

To: yahoo-eng-team@xxxxxxxxxxxxxxxxxxx
From: Jay Jahns <jjahns@xxxxxxxxxx>
Date: Tue, 31 May 2016 17:55:04 -0000
Reply-to: Bug 1586979 <1586979@xxxxxxxxxxxxxxxxxx>
Sender: bounces@xxxxxxxxxxxxx
I added oslo.messaging to this.  If it needs to be marked duplicate then
that is fine, but considering nobody can build Openstack in this state,
there needs to be some urgency on this.  I tested a couple of
workarounds, but the best one so far for us has been to uninstall amqp
and reinstall the 1.4.9 version at the tail end of our automation.

The upper-constraints has 1.4.9 listed.

** Also affects: oslo.messaging
   Importance: Undecided
       Status: New

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Title:
  AMQP 2.0 prevents services from starting

Status in Ironic:
  New
Status in OpenStack Identity (keystone):
  New
Status in neutron:
  New
Status in OpenStack Compute (nova):
  New
Status in oslo.messaging:
  New

Bug description:
  We are running nova from the stable/mitaka branch (not using
  packages).

  Our build process has flagged this.  Previously, when we've built,
  we've used the requirements.txt file to pull in dependencies, and one
  of the dependencies pulls in AMQP.

  Initial investigation leads us to believe that oslo.messaging pulls in
  AMQP as a dependency.  It looks to be pulling in the latest version
  (2.0).  Our previous successful builds show AMQP of 1.4.9, which is
  fully functional.

  2.0 completely breaks, for example, the nova-compute service with the
  following trace:

  2016-05-30 01:04:58.192 11335 CRITICAL nova [req-992ce9e3-fab8-47f9-8879-36b42594fae8 - - - - -] AttributeError: 'Connection' object has no attribute '_frame_writer'
  2016-05-30 01:04:58.192 11335 ERROR nova Traceback (most recent call last):
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/bin/nova-compute", line 10, in <module>
  2016-05-30 01:04:58.192 11335 ERROR nova     sys.exit(main())
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/nova/cmd/compute.py", line 73, in main
  2016-05-30 01:04:58.192 11335 ERROR nova     db_allowed=CONF.conductor.use_local)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/nova/service.py", line 218, in create
  2016-05-30 01:04:58.192 11335 ERROR nova     db_allowed=db_allowed)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/nova/service.py", line 101, in init
  2016-05-30 01:04:58.192 11335 ERROR nova     self.conductor_api.wait_until_ready(context.get_admin_context())
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/nova/conductor/api.py", line 157, in wait_until_ready
  2016-05-30 01:04:58.192 11335 ERROR nova     timeout=timeout)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/nova/baserpc.py", line 58, in ping
  2016-05-30 01:04:58.192 11335 ERROR nova     return cctxt.call(context, 'ping', arg=arg_p)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/rpc/client.py", line 157, in call
  2016-05-30 01:04:58.192 11335 ERROR nova     retry=self.retry)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/transport.py", line 91, in _send
  2016-05-30 01:04:58.192 11335 ERROR nova     timeout=timeout, retry=retry)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 466, in send
  2016-05-30 01:04:58.192 11335 ERROR nova     retry=retry)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 410, in _send
  2016-05-30 01:04:58.192 11335 ERROR nova     msg.update({'_reply_q': self._get_reply_q()})
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 382, in _get_reply_q
  2016-05-30 01:04:58.192 11335 ERROR nova     conn = self._get_connection(rpc_common.PURPOSE_LISTEN)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 373, in _get_connection
  2016-05-30 01:04:58.192 11335 ERROR nova     purpose=purpose)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/common.py", line 396, in init
  2016-05-30 01:04:58.192 11335 ERROR nova     self.connection = connection_pool.create(purpose)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/pool.py", line 110, in create
  2016-05-30 01:04:58.192 11335 ERROR nova     return self.connection_cls(self.conf, self.url, purpose)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 556, in init
  2016-05-30 01:04:58.192 11335 ERROR nova     self.ensure_connection()
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 654, in ensure_connection
  2016-05-30 01:04:58.192 11335 ERROR nova     self.ensure(method=lambda: self.connection.connection)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/oslo_messaging/_drivers/impl_rabbit.py", line 759, in ensure
  2016-05-30 01:04:58.192 11335 ERROR nova     ret, channel = autoretry_method()
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/kombu/connection.py", line 436, in _ensured
  2016-05-30 01:04:58.192 11335 ERROR nova     return fun(*args, **kwargs)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/kombu/connection.py", line 507, in call
  2016-05-30 01:04:58.192 11335 ERROR nova     self.revive(create_channel())
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/kombu/connection.py", line 242, in channel
  2016-05-30 01:04:58.192 11335 ERROR nova     chan = self.transport.create_channel(self.connection)
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/kombu/transport/pyamqp.py", line 92, in create_channel
  2016-05-30 01:04:58.192 11335 ERROR nova     return connection.channel()
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/amqp/connection.py", line 380, in channel
  2016-05-30 01:04:58.192 11335 ERROR nova     channel.open()
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/amqp/channel.py", line 455, in open
  2016-05-30 01:04:58.192 11335 ERROR nova     spec.Channel.Open, 's', ('',), wait=spec.Channel.OpenOk,
  2016-05-30 01:04:58.192 11335 ERROR nova   File "/opt/mhos/openstack/nova/local/lib/python2.7/site-packages/amqp/abstract_channel.py", line 62, in send_method
  2016-05-30 01:04:58.192 11335 ERROR nova     conn._frame_writer.send((1, self.channel_id, sig, args, content))
  2016-05-30 01:04:58.192 11335 ERROR nova AttributeError: 'Connection' object has no attribute '_frame_writer'
  2016-05-30 01:04:58.192 11335 ERROR nova

  
  Investigation also indicates this impacts other services.  I've isolated builds into virtualenvs to prevent external environment from being a concern.

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References

[Bug 1586979] [NEW] AMQP 2.0 prevents services from starting
From: Jay Jahns, 2016-05-30