Open Stack

For some history, there was an attempt at consolidating some of this here:

https://github.com/openstack/nova/commit/dd9c27f999221001bae9faa03571645824d2a681 


But that caused some issues and was reverted here:

https://github.com/openstack/nova/commit/ee5d9ae8d376e41e852b06488e922400cf69b4ac




Thanks,

MATT RIEDEMANN
Advisory Software Engineer
Cloud Solutions and OpenStack Development

Phone: 1-507-253-7622 | Mobile: 1-507-990-1889
E-mail: mriedem at us.ibm.com


3605 Hwy 52 N
Rochester, MN 55901-1407
United States




From:   Ala Rezmerita <ala.rezmerita at cloudwatt.com>
To:     OpenStack Development Mailing List 
<openstack-dev at lists.openstack.org>, 
Cc:     gongysh at unitedstack.com, hrushikesh.gangur at hp.com
Date:   07/03/2013 11:26 AM
Subject:        [openstack-dev] [Nova] too many tokens



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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