Open Stack

Hi everyone,

I have a question regarding too many token generation in nova when using
quantumclient (also related to bug reports
https://bugs.launchpad.net/nova/+bug/1192383 +
https://bugs.launchpad.net/nova-project/+bug/1191159)

For instance during the periodic task  *heal_instance_info_cache*  (every
60s) nova calls quantum API method  get_instance_nw_info that calls
_build_network_info_model (backtrace at the end of the mail).

During the execution of this method,  4 quantum clients intances are
created (all of them use the same context object) and for each of them a
new token is generated.

Is it possible to change this behavior by updating the context.auth_token
property the first time a quantumclient for a given context is created (so
that the same token will be reused among the 4 client instances) ?  Is
there some security issue that can appear?

Thanks
Ala Rezmerita
Cloudwatt

The backtrace :
  /usr/local/lib/python2.7/dist-packages/eventlet/greenthread.py(194)main()
-> result = function(*args, **kwargs)
  /opt/stack/nova/nova/openstack/common/loopingcall.py(125)_inner()
-> idle = self.f(*self.args, **self.kw)
  /opt/stack/nova/nova/service.py(283)periodic_tasks()
-> return self.manager.periodic_tasks(ctxt, raise_on_error=raise_on_error)
  /opt/stack/nova/nova/manager.py(100)periodic_tasks()
-> return self.run_periodic_tasks(context, raise_on_error=raise_on_error)

/opt/stack/nova/nova/openstack/common/periodic_task.py(179)run_periodic_tasks()
-> task(self, context)
  /opt/stack/nova/nova/compute/manager.py(3654)_heal_instance_info_cache()
-> self._get_instance_nw_info(context, instance)
  /opt/stack/nova/nova/compute/manager.py(767)_get_instance_nw_info()
-> instance, conductor_api=self.conductor_api)
  /opt/stack/nova/nova/network/quantumv2/api.py(367)get_instance_nw_info()
-> result = self._get_instance_nw_info(context, instance, networks)
  /opt/stack/nova/nova/network/quantumv2/api.py(375)_get_instance_nw_info()
-> nw_info = self._build_network_info_model(context, instance, networks)

/opt/stack/nova/nova/network/quantumv2/api.py(840)_build_network_info_model()
-> client = quantumv2.get_client(context, admin=True)
> /opt/stack/nova/nova/network/quantumv2/__init__.py(67)get_client()
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