OpenStack Compute (nova)

  1. Bug #1356051
  2. Comment #0

Comment 0 for bug 1356051

Revision history for this message
Thang Pham (thang-pham) wrote : Cannot load 'instance' in the base class

I tried the following on VMware using the VMwareVCDriver with nova-network:

1. Create an instance
2. Create and associate a floating IP with the instance

It failed and printed out the following messages in n-api logs:

2014-08-12 13:54:29.578 ERROR nova.api.openstack [req-86d8f466-cfae-42ac-8340-9eac36d6fc71 demo demo] Caught error: Cannot load 'instance' in the base class
2014-08-12 13:54:29.578 TRACE nova.api.openstack Traceback (most recent call last):
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/__init__.py", line 124, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return req.get_response(self.application)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/request.py", line 1320, in send
2014-08-12 13:54:29.578 TRACE nova.api.openstack application, catch_exc_info=False)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/request.py", line 1284, in call_application
2014-08-12 13:54:29.578 TRACE nova.api.openstack app_iter = application(self.environ, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return resp(environ, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/keystonemiddleware/auth_token.py", line 565, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return self._app(env, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return resp(environ, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return resp(environ, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/lib/python2.7/dist-packages/routes/middleware.py", line 131, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack response = self.app(environ, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 144, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return resp(environ, start_response)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack resp = self.call_func(req, *args, **self.kwargs)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/usr/local/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
2014-08-12 13:54:29.578 TRACE nova.api.openstack return self.func(req, *args, **kwargs)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/wsgi.py", line 908, in __call__
2014-08-12 13:54:29.578 TRACE nova.api.openstack content_type, body, accept)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/wsgi.py", line 974, in _process_stack
2014-08-12 13:54:29.578 TRACE nova.api.openstack action_result = self.dispatch(meth, request, action_args)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/wsgi.py", line 1058, in dispatch
2014-08-12 13:54:29.578 TRACE nova.api.openstack return method(req=request, **action_args)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/compute/contrib/floating_ips.py", line 146, in index
2014-08-12 13:54:29.578 TRACE nova.api.openstack self._normalize_ip(floating_ip)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/api/openstack/compute/contrib/floating_ips.py", line 117, in _normalize_ip
2014-08-12 13:54:29.578 TRACE nova.api.openstack floating_ip['instance'] = fixed_ip['instance']
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/objects/base.py", line 447, in __getitem__
2014-08-12 13:54:29.578 TRACE nova.api.openstack return getattr(self, name)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/objects/base.py", line 67, in getter
2014-08-12 13:54:29.578 TRACE nova.api.openstack self.obj_load_attr(name)
2014-08-12 13:54:29.578 TRACE nova.api.openstack File "/opt/stack/nova/nova/objects/base.py", line 375, in obj_load_attr
2014-08-12 13:54:29.578 TRACE nova.api.openstack _("Cannot load '%s' in the base class") % attrname)
2014-08-12 13:54:29.578 TRACE nova.api.openstack NotImplementedError: Cannot load 'instance' in the base class
2014-08-12 13:54:29.579 INFO nova.api.openstack [req-86d8f466-cfae-42ac-8340-9eac36d6fc71 demo demo] http://10.131.179.211:8774/v2/875c3f62ef75400487e4a68679f8e239/os-floating-ips returned with HTTP 500
2014-08-12 13:54:29.580 DEBUG nova.api.openstack.wsgi [req-86d8f466-cfae-42ac-8340-9eac36d6fc71 demo demo] Returning 500 to user: The server has either erred or is incapable of performing the requested operation. from (pid=12246) __call__ /opt/stack/nova/nova/api/openstack/wsgi.py:1200

With the switch to using FloatingIP objects, it is not longer necessary to call _normalize_ip in nova/api/openstack/compute/contrib/floating_ips.py. The updated code in nova/network/floating_ips.py and nova/api/openstack/compute/contrib/floating_ips.py has logic to get the instance associated with the floating IP, i.e. get_instance_by_floating_ip_addr.