Hello, Maybe I'm not an expert but You probably should use agent (like openvswitch agent) and send such messages from neutron server to compute nodes via RPC. This is how I do such things (I'm using openvswitch agent which is modified by me a little bit)
-- Pozdrawiam Sławek Kapłoński Dnia środa, 12 marca 2014 14:27:01 Nader Lahouti pisze: > Hi All, > > I installed multi nodes openstack (using devstack) with ML2 as core > plugin. I need to perform a task when update_port_pre/post_commit methods > is called during installation of VM. > As I enabled q-svc and q-agt on control and only q-agt on the compute node, > compute node won't run neutron-server so no mechanism driver is loaded. > I see the port event on compute node with this failure shown below. > > Is there anyway to load mechanism driver for compute nodes? > > 2014-03-12 10:35:05.418 TRACE > neutron.plugins.openvswitch.agent.ovs_neutron_agent File > "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 516, in > __iter__ > > 2014-03-12 10:35:05.418 TRACE > neutron.plugins.openvswitch.agent.ovs_neutron_agent raise result > > 2014-03-12 10:35:05.418 TRACE > neutron.plugins.openvswitch.agent.ovs_neutron_agent RemoteError: Remote > error: MechanismDriverError update_port_postcommit failed. > > 2014-03-12 10:35:05.418 TRACE > neutron.plugins.openvswitch.agent.ovs_neutron_agent [u'Traceback (most > recent call last):\n', u' File > "/opt/stack/neutron/neutron/openstack/common/rpc/amqp.py", line 438, in > _process_data\n **args)\n', u' File > "/opt/stack/neutron/neutron/common/rpc.py", line 44, in dispatch\n > neutron_ctxt, version, method, namespace, **kwargs)\n', u' File > "/opt/stack/neutron/neutron/openstack/common/rpc/dispatcher.py", line 172, > in dispatch\n result = getattr(proxyobj, method)(ctxt, **kwargs)\n', u' > File "/opt/stack/neutron/neutron/plugins/ml2/rpc.py", line 192, in > update_device_up\n q_const.PORT_STATUS_ACTIVE)\n', u' File > "/opt/stack/neutron/neutron/plugins/ml2/plugin.py", line 681, in > update_port_status\n > self.mechanism_manager.update_port_postcommit(mech_context)\n', u' File > "/opt/stack/neutron/neutron/plugins/ml2/managers.py", line 395, in > update_port_postcommit\n self._call_on_drivers("update_port_postcommit", > context)\n', u' File "/opt/stack/neutron/neutron/plugins/ml2/managers.py", > line 167, in _call_on_drivers\n method=method_name\n', > u'MechanismDriverError: update_port_postcommit failed.\n']. > > > Regards, > > Nader _______________________________________________ OpenStack-dev mailing list OpenStack-dev@lists.openstack.org http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-dev