In keystone logs:

<15>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.001 9963 DEBUG keystone.common.manager [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Failed to load 'keystone.identity.backends.sql.Identity'
 using stevedore: No 'keystone.identity' driver found, looking for 'keystone.identity.backends.sql.Identity' load_driver /usr/lib/python2.7/dist-packages/keystone/common/manager.py:77
<12>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.074 9963 WARNING keystone.common.manager [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Deprecated: Direct import of driver 'keystone.identity
.backends.sql.Identity' is deprecated as of Liberty in favor of its entrypoint from 'keystone.identity' and may be removed in N.
<15>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.079 9963 DEBUG keystone.notifications [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Callback: `keystone.identity.core.Manager._domain_deleted
` subscribed to event `identity.domain.deleted`. register_event_callback /usr/lib/python2.7/dist-packages/keystone/notifications.py:253
<12>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.081 9963 WARNING keystone.assignment.core [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Deprecated: Use of the identity driver config to auto
matically configure the same assignment driver has been deprecated, in the "O" release, the assignment driver will need to be expicitly configured if different than the default (SQL).
<15>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.101 9963 DEBUG keystone.notifications [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Callback: `keystone.assignment.core.Manager._delete_domai
n_assignments` subscribed to event `identity.domain.deleted`. register_event_callback /usr/lib/python2.7/dist-packages/keystone/notifications.py:253
<15>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.285 9963 DEBUG keystone.common.manager [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Failed to load 'keystone.policy.backends.sql.Policy' usi
ng stevedore: No 'keystone.policy' driver found, looking for 'keystone.policy.backends.sql.Policy' load_driver /usr/lib/python2.7/dist-packages/keystone/common/manager.py:77
<12>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.307 9963 WARNING keystone.common.manager [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Deprecated: Direct import of driver 'keystone.policy.b
ackends.sql.Policy' is deprecated as of Liberty in favor of its entrypoint from 'keystone.policy' and may be removed in N.
<15>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.330 9963 DEBUG keystone.common.manager [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Failed to load 'keystone.contrib.revoke.backends.sql.Rev
oke' using stevedore: No 'keystone.revoke' driver found, looking for 'keystone.contrib.revoke.backends.sql.Revoke' load_driver /usr/lib/python2.7/dist-packages/keystone/common/manager.py:77
<12>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.351 9963 WARNING oslo_log.versionutils [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Deprecated: keystone.contrib.revoke.backends.sql.Revoke 
is deprecated as of Mitaka in favor of sql and may be removed in O.
<12>Jul 26 02:30:06 node-1 keystone-admin: 2016-07-26 02:30:06.353 9963 WARNING keystone.common.manager [req-b3ca4261-ddd1-4bbd-b61c-1b2a78dcf345 - - - - -] Deprecated: Direct import of driver 'keystone.contrib.
revoke.backends.sql.Revoke' is deprecated as of Liberty in favor of its entrypoint from 'keystone.revoke' and may be removed in N.