RPC method in OVS agent attempt to access uninitialized attribute

[Eugene Nikanorov]

The following trace was observed during OVS agent startup.

2015-02-09 07:32:54.512 25702 ERROR oslo.messaging.rpc.dispatcher [req-e7ffbedc-3e8e-4699-a341-9e14ec04f231 ] Exception during message handling: 'OVSNeutronAgent' object has no attribute 'enable_tunneling'
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher Traceback (most recent call last):
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 137, in _dispatch_and_reply
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher incoming.message))
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 180, in _dispatch
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher return self._do_dispatch(endpoint, method, ctxt, args)
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/dispatcher.py", line 126, in _do_dispatch
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher result = getattr(endpoint, method)(ctxt, **new_args)
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher File "/usr/lib/python2.7/dist-packages/neutron/plugins/openvswitch/agent/ovs_neutron_agent.py", line 321, in tunnel_update
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher if not self.enable_tunneling:
2015-02-09 07:32:54.512 25702 TRACE oslo.messaging.rpc.dispatcher AttributeError: 'OVSNeutronAgent' object has no attribute 'enable_tunneling'

The failure is caused by tunnel_update rpc message handled during OVS agent initialization.

This failure at agent startup leads to connectivity failure of whole node, because tunnels are not set up properly.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/154012

[Eugene Nikanorov (enikanorov)]

Observed behavior applies to Juno release and was fixed later.

[OpenStack Infra (hudson-openstack)]

Change abandoned by enikanorov (<email address hidden>) on branch: master
Review: https://review.openstack.org/154012