# Pastebin FhHkdvEP
2020-03-03 09:04:36.746 1 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.6/site-packages/nova/scheduler/filter_scheduler.py", line 302, in _ensure_sufficient_hosts
2020-03-03 09:04:36.746 1 ERROR nova.conductor.manager     raise exception.NoValidHost(reason=reason)
2020-03-03 09:04:36.746 1 ERROR nova.conductor.manager 
2020-03-03 09:04:36.746 1 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. There are not enough hosts available.
2020-03-03 09:04:36.746 1 ERROR nova.conductor.manager 
2020-03-03 09:04:36.746 1 ERROR nova.conductor.manager 
2020-03-03 09:04:36.821 1 WARNING nova.scheduler.utils [req-e74318f7-2ab9-44b2-be5c-3e22d7ea90f2 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 09:04:36.821 1 WARNING nova.scheduler.utils [req-e74318f7-2ab9-44b2-be5c-3e22d7ea90f2 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 09:04:36.824 1 WARNING nova.scheduler.utils [req-e74318f7-2ab9-44b2-be5c-3e22d7ea90f2 af46b0e115a640cea5e67218ab72347b afe91646854241098fa58d29bb034bac - default default] [instance: 9c38c62f-9e3a-4087
-8f40-097e0a966daa] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available.
2020-03-03 09:04:36.824 1 WARNING nova.scheduler.utils [req-e74318f7-2ab9-44b2-be5c-3e22d7ea90f2 af46b0e115a640cea5e67218ab72347b afe91646854241098fa58d29bb034bac - default default] [instance: 9c38c62f-9e3a-4087
-8f40-097e0a966daa] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. There are not enough hosts available.