# Pastebin e580zd4R
020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager   File "/var/lib/openstack/local/lib/python2.7/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 550, in _send
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager     raise result
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager NoValidHost_Remote: No valid host was found. There are not enough hosts available.
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager Traceback (most recent call last):
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager   File "/var/lib/openstack/local/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 226, in inner
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager     return func(*args, **kwargs)
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager   File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/manager.py", line 154, in select_destinations
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager     allocation_request_version, return_alternates)
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager   File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 91, in select_destinations
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager     allocation_request_version, return_alternates)
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager   File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 244, in _schedule
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager     claimed_instance_uuids)
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager   File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 281, in _ensure_sufficient_hosts
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager     raise exception.NoValidHost(reason=reason)
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager NoValidHost: No valid host was found. There are not enough hosts available.
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:46,870.870 1 ERROR nova.conductor.manager 
2020-02-21 10:39:47,227.227 1 WARNING nova.scheduler.utils [req-7a77fc33-6ba3-4a07-b0bc-025e1788be31 d6db835e953c4587bd76482ab952651e 322d17c4d8c74014a070a0e5e470914c - 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/local/lib/python2.7/site-packages/oslo_messaging/rpc/server.py", line 226, in inner
    return func(*args, **kwargs)

  File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/manager.py", line 154, in select_destinations
    allocation_request_version, return_alternates)

  File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 91, in select_destinations
    allocation_request_version, return_alternates)

  File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 244, in _schedule
    claimed_instance_uuids)

  File "/var/lib/openstack/local/lib/python2.7/site-packages/nova/scheduler/filter_scheduler.py", line 281, in _ensure_sufficient_hosts
    raise exception.NoValidHost(reason=reason)

NoValidHost: No valid host was found. There are not enough hosts available.
: NoValidHost_Remote: No valid host was found. There are not enough hosts available.
2020-02-21 10:39:47,228.228 1 WARNING nova.scheduler.utils [req-7a77fc33-6ba3-4a07-b0bc-025e1788be31 d6db835e953c4587bd76482ab952651e 322d17c4d8c74014a070a0e5e470914c - default default] [instance: d1f6143a-8e41-48d3-95eb-4cc86d592267] Setting instance to ERROR state.: NoValidHost_Remote: No valid host was found. There are not enough hosts available.