After many hours investigating sign in error in horizon, I found the last line responsible for this issue in /var/log/apache2/error.log :
[Sat Mar 09 01:12:18 2013] [error] File "/usr/lib/python2.7/dist-packages/novaclient/client.py", line 195, in request [Sat Mar 09 01:12:18 2013] [error] raise exceptions.ConnectionRefused(body) [Sat Mar 09 01:12:18 2013] [error] ConnectionRefused: ConnectionRefused: '[Errno 111] Connection refused' And after dumping /var/log/nova/nova-api.log I found this : 2013-03-09 02:26:45 28553 TRACE nova.service ProcessExecutionError: Unexpected error while running command. 2013-03-09 02:26:45 28553 TRACE nova.service Command: sudo nova-rootwrap /etc/nova/rootwrap.conf iptables-save -c -t nat 2013-03-09 02:26:45 28553 TRACE nova.service Exit code: 1 2013-03-09 02:26:45 28553 TRACE nova.service Stdout: '' 2013-03-09 02:26:45 28553 TRACE nova.service Stderr: 'iptables-save v1.4.14: Cannot initialize: Table does not exist (do you need to insmod?)\n\n' 2013-03-09 02:26:45 28553 TRACE nova.service 2013-03-09 02:26:45 28553 INFO nova.wsgi [-] Stopping WSGI server. 2013-03-09 02:26:45 12072 INFO nova.service [-] Child 28553 exited with status 2 2013-03-09 02:26:45 12072 INFO nova.service [-] Started child 28606 Do you think this issue with nova is responsible for breaking dashboard? Any help will be appreciated. Thanks a lot. Amine.
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