web / # ll /etc/keystone/
total 136
-rw-r----- 1  106  997  1046 Apr 16 14:23 logging.conf.sample
-rw-r----- 1  106  997  2303 Apr 16 14:23 default_catalog.templates
-rw-r----- 1  106  997  2498 Apr 17 00:42 keystone-paste.ini
drwxr-xr-x 4 root root  4096 Apr 20  2014 ssl
drwxr-xr-x 2 root root  4096 Apr 17 00:40 httpd
-rw-r----- 1  106  997  9699 Apr 16 14:23 policy.json
-rw-r----- 1  106  997 13903 Apr 16 14:23 policy.v3cloudsample.json
-rw-r--r-- 1 root root 14967 Apr 16 15:10 keystone.conf
-rw-r----- 1  106  997 73101 Apr 16 14:23 keystone.conf.sample


from log:

Traceback (most recent call last):
  File "/usr/lib64/python2.7/site-packages/gunicorn/arbiter.py", line 507, in spawn_worker
    worker.init_process()
  File "/usr/lib64/python2.7/site-packages/gunicorn/workers/base.py", line 118, in init_process
    self.wsgi = self.app.wsgi()
  File "/usr/lib64/python2.7/site-packages/gunicorn/app/base.py", line 67, in wsgi
    self.callable = self.load()
  File "/usr/lib64/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 65, in load
    return self.load_wsgiapp()
  File "/usr/lib64/python2.7/site-packages/gunicorn/app/wsgiapp.py", line 52, in load_wsgiapp
    return util.import_app(self.app_uri)
  File "/usr/lib64/python2.7/site-packages/gunicorn/util.py", line 355, in import_app
    __import__(module)
  File "/usr/olocal/web-apps/keystone/admin.py", line 21, in <module>
    application = wsgi_server.initialize_application("admin")
  File "/usr/lib64/python2.7/site-packages/keystone/server/wsgi.py", line 53, in initialize_application
    startup_application_fn=loadapp)
  File "/usr/lib64/python2.7/site-packages/keystone/server/common.py", line 51, in setup_backends
    res = startup_application_fn()
  File "/usr/lib64/python2.7/site-packages/keystone/server/wsgi.py", line 50, in loadapp
    'config:%s' % config.find_paste_config(), name)
  File "/usr/lib64/python2.7/site-packages/keystone/common/config.py", line 1176, in find_paste_config
    raise exception.ConfigFileNotFound(config_file=paste_config_value)
ConfigFileNotFound: An unexpected error prevented the server from fulfilling your request.