root@osa-deploy:/opt/openstack-ansible/playbooks# openstack-ansible openstack-hosts-setup.yml
Variable files: "-e @/etc/openstack_deploy/user_secrets.yml -e @/etc/openstack_deploy/user_variables.yml "

PLAY [Basic host setup] *******************************************************
Traceback (most recent call last):
  File "/usr/local/bin/ansible-playbook", line 324, in <module>
    sys.exit(main(sys.argv[1:]))
  File "/usr/local/bin/ansible-playbook", line 264, in main
    pb.run()
  File "/usr/local/lib/python2.7/dist-packages/ansible/playbook/__init__.py", line 348, in run
    if not self._run_play(play):
  File "/usr/local/lib/python2.7/dist-packages/ansible/playbook/__init__.py", line 739, in _run_play
    self._do_setup_step(play)
  File "/usr/local/lib/python2.7/dist-packages/ansible/playbook/__init__.py", line 585, in _do_setup_step
    host_list = [h for h in host_list if h not in self.SETUP_CACHE or 'module_setup' not in self.SETUP_CACHE[h]]
  File "/usr/local/lib/python2.7/dist-packages/ansible/cache/__init__.py", line 35, in __getitem__
    return self._plugin.get(key)
  File "/usr/local/lib/python2.7/dist-packages/ansible/cache/jsonfile.py", line 65, in get
    value = json.load(f)
  File "/usr/lib/python2.7/json/__init__.py", line 290, in load
    **kw)
  File "/usr/lib/python2.7/json/__init__.py", line 338, in loads
    return _default_decoder.decode(s)
  File "/usr/lib/python2.7/json/decoder.py", line 366, in decode
    obj, end = self.raw_decode(s, idx=_w(s, 0).end())
  File "/usr/lib/python2.7/json/decoder.py", line 384, in raw_decode
    raise ValueError("No JSON object could be decoded")
ValueError: No JSON object could be decoded