Ken, Can you take a look on the logs generated in nova-compute, maybe you’ll find a detail information about the root cause of the problem
Victor Morales On 7/28/16, 2:34 PM, "Ken D'Ambrosio" <k...@jots.org> wrote: >Trying to orchestrate a bunch of VMs on our ~500 core cloud, and we're >getting the "not enough hosts" problem. Only issue is that the >dashboard seems to imply we've got the elbow room needed to instantiate. > Furthermore, it would be *really handy* if I knew what the bottleneck >it thought was: disk, RAM, CPU, whatever. Here's a sample of the error: > >----------------------- begin ----------------------- >2016-07-28 18:40:47.961 1080 WARNING nova.scheduler.utils >[req-977badf4-a4a2-4766-87fd-c4e3ceb2e293 >a4c895a6fe294ae3a81e3c6bb9209f52 33c2cf3cb61c425abcb0e0d35fdf21b7 - - -] >[instance: ee175a40-11d9-4a43-b6e1-c4d7935acff1] Setting instance to >ERROR state. >2016-07-28 18:40:51.892 1023 WARNING nova.scheduler.utils >[req-e2a65200-1662-4cd7-aa9e-db5e225adfa1 >a4c895a6fe294ae3a81e3c6bb9209f52 33c2cf3cb61c425abcb0e0d35fdf21b7 - - -] >Failed to compute_task_build_instances: No valid host was found. There >are not enough hosts available. >Traceback (most recent call last): > > File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/server.py", >line 142, in inner > return func(*args, **kwargs) > > File "/usr/lib/python2.7/dist-packages/nova/scheduler/manager.py", >line 84, in select_destinations > filter_properties) > > File >"/usr/lib/python2.7/dist-packages/nova/scheduler/filter_scheduler.py", >line 90, in select_destinations > raise exception.NoValidHost(reason=reason) > >NoValidHost: No valid host was found. There are not enough hosts >available. >----------------------- begin ----------------------- > >Any suggestions on how to track down exactly what's going wrong? > >Thanks! > >-Ken > >_______________________________________________ >Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack >Post to : openstack@lists.openstack.org >Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack