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Getting this error message Error: Failed to launch instance "VM1": Please try again later [Error: No valid host was found. ].

asked 2015-03-16 13:17:58 -0500

Rabiul gravatar image

updated 2015-03-16 17:44:38 -0500

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.

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This issue is because nova-compute service in compute nodes is not properly started. It should work after restarting the nova-compute service in compute node with following command. service nova-compute restart

Vasanth gravatar imageVasanth ( 2015-03-16 23:42:50 -0500 )edit

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answered 2015-03-17 00:13:39 -0500

Praveen N gravatar image

updated 2015-03-17 00:14:37 -0500

Hi, This kind of error appears when you don't have enough resources to provision the Instance.Also ensure nova services are active and running. Try launch instances with different combination of flavors and images.

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Asked: 2015-03-16 13:17:58 -0500

Seen: 839 times

Last updated: Mar 17 '15