Exit error Novaclient - 08/11/2015

Exit error:
----------------------- PROFILING -----------------------

Target: post-configure.d

Script                                     Seconds
---------------------------------------  ----------

10-iptables                                   0.785
68-ironic-conductor                          10.404
80-seedstack-masquerade                       0.024
98-undercloud-setup                           0.003
99-refresh-completed                          0.546

--------------------- END PROFILING ---------------------
[2015-11-08 10:22:29,308] (os-refresh-config) [INFO] Completed phase post-configure
os-refresh-config completed successfully
Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "/usr/lib/python2.7/site-packages/instack_undercloud/undercloud.py", line 563, in install
    _configure_ssh_keys()
  File "/usr/lib/python2.7/site-packages/instack_undercloud/undercloud.py", line 538, in _configure_ssh_keys
    nova.keypairs.get('default')
  File "/usr/lib/python2.7/site-packages/novaclient/v2/keypairs.py", line 67, in get
    "keypair")
  File "/usr/lib/python2.7/site-packages/novaclient/base.py", line 164, in _get
    _resp, body = self.api.client.get(url)
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 446, in get
    return self._cs_request(url, 'GET', **kwargs)
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 402, in _cs_request
    self.authenticate()
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 555, in authenticate
    auth_url = self._v2_auth(auth_url)
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 646, in _v2_auth
    return self._authenticate(url, body)
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 659, in _authenticate
    **kwargs)
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 397, in _time_request
    resp, body = self.request(url, method, **kwargs)
  File "/usr/lib/python2.7/site-packages/novaclient/client.py", line 391, in request
    raise exceptions.from_response(resp, body, url, method)
novaclient.exceptions.ClientException: Unknown Error (HTTP 504)
Command 'instack-install-undercloud' returned non-zero exit status 1