Error: Failed to launch instance "VM1": Please try again later [Error: No valid host was found. ].Here is the error log.

Fault

Message No valid host was found. Code 500 Details File "/usr/lib/python2.7/dist-packages/nova/conductor/manager.py", line 616, in build_instances request_spec, filter_properties) File "/usr/lib/python2.7/dist-packages/nova/scheduler/client/__init__.py", line 49, in select_destinations context, request_spec, filter_properties) File "/usr/lib/python2.7/dist-packages/nova/scheduler/client/__init__.py", line 35, in __run_method return getattr(self.instance, __name)(args, *kwargs) File "/usr/lib/python2.7/dist-packages/nova/scheduler/client/query.py", line 34, in select_destinations context, request_spec, filter_properties) File "/usr/lib/python2.7/dist-packages/nova/scheduler/rpcapi.py", line 108, in select_destinations request_spec=request_spec, filter_properties=filter_properties) File "/usr/lib/python2.7/dist-packages/oslo/messaging/rpc/client.py", line 152, in call retry=self.retry) File "/usr/lib/python2.7/dist-packages/oslo/messaging/transport.py", line 90, in _send timeout=timeout, retry=retry) File "/usr/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py", line 408, in send retry=retry) File "/usr/lib/python2.7/dist-packages/oslo/messaging/_drivers/amqpdriver.py", line 399, in _send raise result Created March 16, 2015, 10:32 p.m.