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[Jens Offenbach <wolle5050@xxxxxx>]

Public bug reported:

I am confronted with a strange problem... I have OpenStack Mitaka
running on Ubuntu 16.04. I have an HA deployment with 2 controllers and
3 compute nodes. I am using OpenSwitch. Everything is working, but after
some days I have a network issue on one compute nodes. I am unable to
reproduce the problem. But when I try to ping a floating ip that is
assigned to a VM on this compute node. I get no reply. I have already
verified that all ping requests are received by the tap interface.

I have an error in the neutron-openvswitch-agent.log:
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher [-] Exception during message handling: Endpoint does not support RPC version 2.0. Attempted method: update_service_capabilities
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher Traceback (most recent call last):
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher     incoming.message))
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 194, in _dispatch
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher     raise UnsupportedVersion(version, method=method)
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher UnsupportedVersion: Endpoint does not support RPC version 2.0. Attempted method: update_service_capabilities
2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher 

I have restarted nova-compute and neutron-openvswitch-agent on the
compute node, but the problem remains.

Any ideas?

** Affects: neutron
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1594276

Title:
  Endpoint does not support RPC version 2.0. Attempted method:
  update_service_capabilities

Status in neutron:
  New

Bug description:
  I am confronted with a strange problem... I have OpenStack Mitaka
  running on Ubuntu 16.04. I have an HA deployment with 2 controllers
  and 3 compute nodes. I am using OpenSwitch. Everything is working, but
  after some days I have a network issue on one compute nodes. I am
  unable to reproduce the problem. But when I try to ping a floating ip
  that is assigned to a VM on this compute node. I get no reply. I have
  already verified that all ping requests are received by the tap
  interface.

  I have an error in the neutron-openvswitch-agent.log:
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher [-] Exception during message handling: Endpoint does not support RPC version 2.0. Attempted method: update_service_capabilities
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher Traceback (most recent call last):
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 138, in _dispatch_and_reply
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher     incoming.message))
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher   File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 194, in _dispatch
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher     raise UnsupportedVersion(version, method=method)
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher UnsupportedVersion: Endpoint does not support RPC version 2.0. Attempted method: update_service_capabilities
  2016-06-20 09:38:37.475 16138 ERROR oslo_messaging.rpc.dispatcher 

  I have restarted nova-compute and neutron-openvswitch-agent on the
  compute node, but the problem remains.

  Any ideas?

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