Deployment:
Ubuntu 12.04 on Fuel 4.1
Neutron with vlan segmentation
3 controllers, 3 storage (Ceph), 20 computes
A user will encounter intermittent 500 Internal Server Error messages. This is usually associated with trying to launch an instance from a snapshot. Repeated attempts eventually work.
Traceback:
2014-06-17T05:29:04.736950+00:00 err: ERROR Not Found: Instance could not be found (HTTP 404) (Request-ID: req-9f25178b-c483-4ad5-9236-fd8ac7c4dcae)
Traceback (most recent call last):
File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/dashboards/project/volumes/tables.py", line 120, in get_attachment_name
server = api.nova.server_get(request, server_id)
File "/usr/share/openstack-dashboard/openstack_dashboard/wsgi/../../openstack_dashboard/api/nova.py", line 489, in server_get
return Server(novaclient(request).servers.get(instance_id), request)
File "/usr/lib/python2.7/dist-packages/novaclient/v1_1/servers.py", line 370, in get
return self._get("/servers/%s" % base.getid(server), "server")
File "/usr/lib/python2.7/dist-packages/novaclient/base.py", line 140, in _get
_resp, body = self.api.client.get(url)
File "/usr/lib/python2.7/dist-packages/novaclient/client.py", line 229, in get
return self._cs_request(url, 'GET', **kwargs)
File "/usr/lib/python2.7/dist-packages/novaclient/client.py", line 213, in _cs_request
**kwargs)
File "/usr/lib/python2.7/dist-packages/novaclient/client.py", line 195, in _time_request
resp, body = self.request(url, method, **kwargs)
File "/usr/lib/python2.7/dist-packages/novaclient/client.py", line 189, in request
raise exceptions.from_response(resp, body, url, method)
NotFound: Instance could not be found (HTTP 404) (Request-ID: req-9f25178b-c483-4ad5-9236-fd8ac7c4dcae)
It is only reproducable under high load. Disabling debug mode for Horizon will cause the issue to go away. Perhaps one solution is tuning down the level of debugging to only the services we care about most.
Fix proposed to branch: master
Review: https:/