2017-05-15 10:33:18.980 | Traceback (most recent call last):
2017-05-15 10:33:18.980 |   File "/usr/local/bin/nova-manage", line 6, in <module>
2017-05-15 10:33:18.980 |     from nova.cmd.manage import main
2017-05-15 10:33:18.980 |   File "/opt/stack/nova/nova/cmd/manage.py", line 65, in <module>
2017-05-15 10:33:18.980 |     from oslo_db import exception as db_exc
2017-05-15 10:33:18.980 |   File "/usr/local/lib/python2.7/dist-packages/oslo_db/exception.py", line 50, in <module>
2017-05-15 10:33:18.980 |     from oslo_utils.excutils import CausedByException
2017-05-15 10:33:18.981 |   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/excutils.py", line 32, in <module>
2017-05-15 10:33:18.981 |     from oslo_utils import timeutils
2017-05-15 10:33:18.981 |   File "/usr/local/lib/python2.7/dist-packages/oslo_utils/timeutils.py", line 27, in <module>
2017-05-15 10:33:18.981 |     from monotonic import monotonic as now  # noqa
2017-05-15 10:33:18.981 |   File "/usr/local/lib/python2.7/dist-packages/monotonic.py", line 169, in <module>
2017-05-15 10:33:18.981 |     raise RuntimeError('no suitable implementation for this system')
2017-05-15 10:33:18.981 | RuntimeError: no suitable implementation for this system