← Back to team overview

yahoo-eng-team team mailing list archive

  1. yahoo-eng-team team
  2. Mailing list archive
  3. Message #21642

[Bug 1371160] Re: HTTP 500 while retrieving metadata by non-existent key

  Thread Previous • Date Previous • • Thread Next 
So I agree that n-api should not stack trace... however it successfully
returns a 400 to the service, which I think was expected. Neutron is
exploding on that 400 though, which is not.

** Tags added: ec2

** Also affects: neutron
   Importance: Undecided
       Status: New

-- 
You received this bug notification because you are a member of Yahoo!
Engineering Team, which is subscribed to neutron.
https://bugs.launchpad.net/bugs/1371160

Title:
  HTTP 500 while retrieving metadata by non-existent key

Status in OpenStack Neutron (virtual network service):
  New
Status in OpenStack Compute (Nova):
  New

Bug description:
  HTTP 500 error occurs when one tries to get metadata by path
  constructed from folder name with appended value.

  Steps to repro:
  1. Launch VM and access its terminal
  2. curl http://169.254.169.254/latest/meta-data/instance-id  -- this returns some string, i.e. i-00000001
  3. curl http://169.254.169.254/latest/meta-data/instance-id/i-00000001  -- this returns HTTP 500
  It's expected that the last call returns meaningful message and not produce trace backs in logs.

  Errors:
  ----------
  In VM terminal:
  $ curl http://169.254.169.254/latest/meta-data/instance-id/i-00000001
  <html>
   <head>
    <title>500 Internal Server Error</title>
   </head>
   <body>
    <h1>500 Internal Server Error</h1>
    Remote metadata server experienced an internal server error.<br /><br />
   </body>
  </html>$ 

  In Neutron metadata agent:
  2014-09-18 14:44:37.563 ERROR neutron.agent.metadata.agent [-] Unexpected error.
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent Traceback (most recent call last):
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent   File "/opt/stack/neutron/neutron/agent/metadata/agent.py", line 130, in __call__
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent     return webob.exc.HTTPNotFound()
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent   File "/opt/stack/neutron/neutron/agent/metadata/agent.py", line 248, in _proxy_request
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent     def _sign_instance_id(self, instance_id):
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent Exception: Unexpected response code: 400
  2014-09-18 14:44:37.563 TRACE neutron.agent.metadata.agent 
  2014-09-18 14:44:37.566 INFO eventlet.wsgi.server [-] 10.0.0.2,<local> - - [18/Sep/2014 14:44:37] "GET /latest/meta-data/instance-id/i-00000001 HTTP/1.1" 500 229 0.348877

  In Nova API service:
  2014-09-18 14:31:19.030 ERROR nova.api.ec2 [req-5c84e0ae-7d18-4113-a08b-ed068e5333ed None None] FaultWrapper: string indices must be integers, not unicode
  2014-09-18 14:31:19.030 TRACE nova.api.ec2 Traceback (most recent call last):
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/opt/stack/nova/nova/api/ec2/__init__.py", line 87, in __call__
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     return req.get_response(self.application)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1320, in send
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     application, catch_exc_info=False)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1284, in call_application
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     app_iter = application(self.environ, start_response)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     resp = self.call_func(req, *args, **self.kwargs)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     return self.func(req, *args, **kwargs)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/opt/stack/nova/nova/api/ec2/__init__.py", line 99, in __call__
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     rv = req.get_response(self.application)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1320, in send
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     application, catch_exc_info=False)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/request.py", line 1284, in call_application
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     app_iter = application(self.environ, start_response)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 130, in __call__
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     resp = self.call_func(req, *args, **self.kwargs)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/usr/lib/python2.7/dist-packages/webob/dec.py", line 195, in call_func
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     return self.func(req, *args, **kwargs)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/opt/stack/nova/nova/api/metadata/handler.py", line 128, in __call__
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     data = meta_data.lookup(req.path_info)
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/opt/stack/nova/nova/api/metadata/base.py", line 418, in lookup
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     data = self.get_ec2_item(path_tokens[1:])
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/opt/stack/nova/nova/api/metadata/base.py", line 300, in get_ec2_item
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     return find_path_in_tree(data, path_tokens[1:])
  2014-09-18 14:31:19.030 TRACE nova.api.ec2   File "/opt/stack/nova/nova/api/metadata/base.py", line 565, in find_path_in_tree
  2014-09-18 14:31:19.030 TRACE nova.api.ec2     data = data[path_tokens[i]]
  2014-09-18 14:31:19.030 TRACE nova.api.ec2 TypeError: string indices must be integers, not unicode
  2014-09-18 14:31:19.030 TRACE nova.api.ec2 
  2014-09-18 14:31:19.032 INFO nova.metadata.wsgi.server [req-5c84e0ae-7d18-4113-a08b-ed068e5333ed None None] 10.0.0.2,172.18.76.77 "GET /latest/meta-data/placement/availability-zone/nova HTTP/1.1" status: 400 len: 246 time: 0.5495760

To manage notifications about this bug go to:
https://bugs.launchpad.net/neutron/+bug/1371160/+subscriptions

References

  Thread Previous • Date Previous • • Thread Next