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I can't lunch any instance in Openstack through the horizon or CLI

asked 2019-05-06 08:15:05 -0500

Hatem gravatar image

I have install Openstack in single noeud using devstack , when i try to lunch an instance it get me an error like that :

Message No valid host was found. There are not enough hosts available Code 500 Details File "/opt/stack/nova/nova/conductor/", line 909, in schedule_and_build_instances request_specs[0].to_legacy_filter_properties_dict()) File "/opt/stack/nova/nova/conductor/", line 609, in _schedule_instances hosts = self.scheduler_client.select_destinations(context, spec_obj) File "/opt/stack/nova/nova/scheduler/", line 371, in wrapped return func(args, *kwargs) File "/opt/stack/nova/nova/scheduler/client/", line 51, in select_destinations return self.queryclient.select_destinations(context, spec_obj) File "/opt/stack/nova/nova/scheduler/client/", line 37, in __run_method return getattr(self.instance, __name)(args, *kwargs) File "/opt/stack/nova/nova/scheduler/client/", line 32, in select_destinations return self.scheduler_rpcapi.select_destinations(context, spec_obj) File "/opt/stack/nova/nova/scheduler/", line 129, in select_destinations return, 'select_destinations', **msg_args) File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/rpc/", line 169, in call retry=self.retry) File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/", line 97, in _send timeout=timeout, retry=retry) File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/", line 566, in send retry=retry) File "/usr/local/lib/python2.7/dist-packages/oslo_messaging/_drivers/", line 557, in _send raise result

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You need to check the nova scheduler log for more info. Also run nova-status upgrade check to see if the node was registered with the placement service, and openstack service list.

Bernd Bausch gravatar imageBernd Bausch ( 2019-05-06 09:04:27 -0500 )edit

Does your server have enough RAM and storage for the instance?

Bernd Bausch gravatar imageBernd Bausch ( 2019-05-07 02:43:24 -0500 )edit

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answered 2019-05-07 01:53:38 -0500

ARatcliff gravatar image

Can this be the problem?

-- When deploying the Compute node in a virtual machine without nested guest support, add --libvirt-type qemu or launching instances on the deployed overcloud will fail. --

from (

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Hardly, since the OP talks about Devstack, not Tripleo.

Bernd Bausch gravatar imageBernd Bausch ( 2019-05-07 02:41:28 -0500 )edit

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Asked: 2019-05-06 08:15:05 -0500

Seen: 109 times

Last updated: May 06 '19