# Pastebin UnFf1AUh
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/rpc/server.py", line 229, in inner
    return func(*args, **kwargs)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/manager.py", line 171, in select_destinations
    allocation_request_version, return_alternates)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 96, in select_destinations
    allocation_request_version, return_alternates)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 265, in _schedule
    claimed_instance_uuids)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 302, in _ensure_sufficient_hosts
    raise exception.NoValidHost(reason=reason)

nova.exception.NoValidHost: No valid host was found. There are not enough hosts available.
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available.
2020-03-03 11:36:57.751 1 WARNING nova.scheduler.utils [req-d371a8cc-b773-49a5-ab27-3faeff3d5140 af46b0e115a640cea5e67218ab72347b afe91646854241098fa58d29bb034bac - default default] Failed to compute_task_build_instances: No valid host was found. There are not enough hosts available.
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.6/site-packages/oslo_messaging/rpc/server.py", line 229, in inner
    return func(*args, **kwargs)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/manager.py", line 171, in select_destinations
    allocation_request_version, return_alternates)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 96, in select_destinations
    allocation_request_version, return_alternates)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 265, in _schedule
    claimed_instance_uuids)

  File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 302, in _ensure_sufficient_hosts
    raise exception.NoValidHost(reason=reason)

nova.exception.NoValidHost: No valid host was found. There are not enough hosts available.
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available.
2020-03-03 11:36:57.752 1 WARNING nova.scheduler.utils [req-d371a8cc-b773-49a5-ab27-3faeff3d5140 af46b0e115a640cea5e67218ab72347b afe91646854241098fa58d29bb034bac - default default] [instance: 67aa2dd0-71ad-44b7-8ffc-e9eeb6fa8b15] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available.
2020-03-03 11:36:57.752 1 WARNING nova.scheduler.utils [req-d371a8cc-b773-49a5-ab27-3faeff3d5140 af46b0e115a640cea5e67218ab72347b afe91646854241098fa58d29bb034bac - default default] [instance: 67aa2dd0-71ad-44b7-8ffc-e9eeb6fa8b15] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available.