+ exec nova-conductor --config-file /etc/nova/nova.conf
2026-07-24 00:22:16.143 1 INFO nova.utils [None req-f93045e5-88cb-49a8-b39b-7e2aee68a4f2 - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-07-24 00:22:16.317 1 INFO nova.utils [None req-f93045e5-88cb-49a8-b39b-7e2aee68a4f2 - - - - - -] The cell worker thread pool MainProcess.cell_worker is shutting down
2026-07-24 00:22:17.317 1 INFO nova.utils [None req-f93045e5-88cb-49a8-b39b-7e2aee68a4f2 - - - - - -] The cell worker thread pool MainProcess.cell_worker is closed
2026-07-24 00:22:17.321 1 WARNING oslo_service.backend._threading.service [None req-f93045e5-88cb-49a8-b39b-7e2aee68a4f2 - - - - - -] Service Service is not picklable with spawn; falling back to fork. Please make the service spawn-safe to avoid this fallback.
2026-07-24 00:22:17.334 1 WARNING oslo_config.cfg [None req-f93045e5-88cb-49a8-b39b-7e2aee68a4f2 - - - - - -] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.
2026-07-24 00:22:17.379 10 INFO nova.service [-] Starting conductor node (version 33.1.0)
2026-07-24 00:22:17.398 12 INFO nova.service [-] Starting conductor node (version 33.1.0)
2026-07-24 00:41:35.227 10 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 2.72 sec
2026-07-24 00:42:19.170 12 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 6.66 sec
2026-07-24 00:42:21.475 10 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 6.25 sec
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager [None req-b2f38e4e-5542-461b-ae39-9ebef9f8f076 d051926601ac496380b545ac4e4c8929 e74462be62914814b62625776cde6a28 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     raise result
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager 
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager 
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager 
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager 
2026-07-24 01:05:41.990 10 ERROR nova.conductor.manager 
2026-07-24 01:05:42.291 10 WARNING nova.scheduler.utils [None req-b2f38e4e-5542-461b-ae39-9ebef9f8f076 d051926601ac496380b545ac4e4c8929 e74462be62914814b62625776cde6a28 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:42.293 10 WARNING nova.scheduler.utils [None req-b2f38e4e-5542-461b-ae39-9ebef9f8f076 d051926601ac496380b545ac4e4c8929 e74462be62914814b62625776cde6a28 - - default default] [instance: 7a88b668-5f4d-4426-a9f7-2a9f2e3e01f6] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager [None req-a2a2b470-7333-4c3a-818e-4cbe8a68c208 cc315ab3cb334394b3aa56853890d871 53ae8cd913ab42dc912ef97a93755e37 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     raise result
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager 
2026-07-24 01:05:48.270 12 ERROR nova.conductor.manager 
2026-07-24 01:05:48.583 12 WARNING nova.scheduler.utils [None req-a2a2b470-7333-4c3a-818e-4cbe8a68c208 cc315ab3cb334394b3aa56853890d871 53ae8cd913ab42dc912ef97a93755e37 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:48.585 12 WARNING nova.scheduler.utils [None req-a2a2b470-7333-4c3a-818e-4cbe8a68c208 cc315ab3cb334394b3aa56853890d871 53ae8cd913ab42dc912ef97a93755e37 - - default default] [instance: 708a6304-c674-4e72-80e2-735aafae3511] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager [None req-201cda61-62e4-426d-828b-ef9b78ae9a8b 0cb29c9dd9d8418f94b3b76dad9f2580 8ae6c4ee223f4a589f421e116dafb3b4 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     raise result
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager 
2026-07-24 01:05:55.392 10 ERROR nova.conductor.manager 
2026-07-24 01:05:55.487 10 WARNING nova.scheduler.utils [None req-201cda61-62e4-426d-828b-ef9b78ae9a8b 0cb29c9dd9d8418f94b3b76dad9f2580 8ae6c4ee223f4a589f421e116dafb3b4 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:55.488 10 WARNING nova.scheduler.utils [None req-201cda61-62e4-426d-828b-ef9b78ae9a8b 0cb29c9dd9d8418f94b3b76dad9f2580 8ae6c4ee223f4a589f421e116dafb3b4 - - default default] [instance: ab40c5ca-0955-465a-850a-2049d154620b] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager [None req-48c76617-f8a8-4872-9407-4984568ec445 353ab9a123294aa9abf729be6a2a2a13 e4a0718fd9114763b5d38d598ffdd1ab - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     raise result
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager 
2026-07-24 01:05:56.824 12 ERROR nova.conductor.manager 
2026-07-24 01:05:56.897 12 WARNING nova.scheduler.utils [None req-48c76617-f8a8-4872-9407-4984568ec445 353ab9a123294aa9abf729be6a2a2a13 e4a0718fd9114763b5d38d598ffdd1ab - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:05:56.898 12 WARNING nova.scheduler.utils [None req-48c76617-f8a8-4872-9407-4984568ec445 353ab9a123294aa9abf729be6a2a2a13 e4a0718fd9114763b5d38d598ffdd1ab - - default default] [instance: f25ebed4-4dbd-489b-984c-2108683f92a0] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager [None req-9387d724-bb57-4654-8034-d7ee65bb0a72 8c435187a7e84ef1b1f4c4a21377187d e6f25361251b40159e9bf99493699e1b - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     raise result
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager 
2026-07-24 01:06:03.634 10 ERROR nova.conductor.manager 
2026-07-24 01:06:03.737 10 WARNING nova.scheduler.utils [None req-9387d724-bb57-4654-8034-d7ee65bb0a72 8c435187a7e84ef1b1f4c4a21377187d e6f25361251b40159e9bf99493699e1b - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:06:03.738 10 WARNING nova.scheduler.utils [None req-9387d724-bb57-4654-8034-d7ee65bb0a72 8c435187a7e84ef1b1f4c4a21377187d e6f25361251b40159e9bf99493699e1b - - default default] [instance: 620ce14d-da0f-494d-81cd-6f8c847c2e2e] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager [None req-f3f4cf8a-c6cb-4f62-8c13-7cf275281f10 295e9e059eff42f28d490b0047458fc9 217b23025f2d4fedaee2a73344b075f9 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     raise result
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager 
2026-07-24 01:06:10.506 12 ERROR nova.conductor.manager 
2026-07-24 01:06:10.601 12 WARNING nova.scheduler.utils [None req-f3f4cf8a-c6cb-4f62-8c13-7cf275281f10 295e9e059eff42f28d490b0047458fc9 217b23025f2d4fedaee2a73344b075f9 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:06:10.602 12 WARNING nova.scheduler.utils [None req-f3f4cf8a-c6cb-4f62-8c13-7cf275281f10 295e9e059eff42f28d490b0047458fc9 217b23025f2d4fedaee2a73344b075f9 - - default default] [instance: 0116e633-7599-43ff-a53a-f40d86bb778a] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager [None req-5272cddf-7b65-425e-92b4-8c6dd5d54979 e95533b78acb460f89b6a83631570806 a76ca8c5ce0c489f82e62f7db56c4432 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     raise result
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager 
2026-07-24 01:07:01.131 10 ERROR nova.conductor.manager 
2026-07-24 01:07:01.241 10 WARNING nova.scheduler.utils [None req-5272cddf-7b65-425e-92b4-8c6dd5d54979 e95533b78acb460f89b6a83631570806 a76ca8c5ce0c489f82e62f7db56c4432 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:01.244 10 WARNING nova.scheduler.utils [None req-5272cddf-7b65-425e-92b4-8c6dd5d54979 e95533b78acb460f89b6a83631570806 a76ca8c5ce0c489f82e62f7db56c4432 - - default default] [instance: 6ff92f57-d8c5-4fe5-b2a6-1c510be52512] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager [None req-bd70e47c-d0c7-4e8f-8719-a426c4c85fee 301f6d9f5d5443ef8d8191c944ac72bb 24c7719784e5407b93bbe8610392b4c2 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     raise result
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager 
2026-07-24 01:07:05.936 12 ERROR nova.conductor.manager 
2026-07-24 01:07:06.046 12 WARNING nova.scheduler.utils [None req-bd70e47c-d0c7-4e8f-8719-a426c4c85fee 301f6d9f5d5443ef8d8191c944ac72bb 24c7719784e5407b93bbe8610392b4c2 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:06.047 12 WARNING nova.scheduler.utils [None req-bd70e47c-d0c7-4e8f-8719-a426c4c85fee 301f6d9f5d5443ef8d8191c944ac72bb 24c7719784e5407b93bbe8610392b4c2 - - default default] [instance: 8ea55d7c-123c-4816-97e0-83f025007d67] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager [None req-4d3ed636-356e-41b5-bbde-4e61d735560b 67e44d396bfe417a8bc8876b57f36af0 53aef9ef5bb04df88feede2c77b325e6 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     raise result
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager 
2026-07-24 01:07:33.035 10 ERROR nova.conductor.manager 
2026-07-24 01:07:33.119 10 WARNING nova.scheduler.utils [None req-4d3ed636-356e-41b5-bbde-4e61d735560b 67e44d396bfe417a8bc8876b57f36af0 53aef9ef5bb04df88feede2c77b325e6 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:07:33.120 10 WARNING nova.scheduler.utils [None req-4d3ed636-356e-41b5-bbde-4e61d735560b 67e44d396bfe417a8bc8876b57f36af0 53aef9ef5bb04df88feede2c77b325e6 - - default default] [instance: 8eb49709-70ac-47f4-9623-caa42171e564] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager [None req-452282dc-244a-43bd-9b63-339d06f593d4 278467bcbb2b43518f9485e321f3dab9 63ffbd775cac43b692f73a9c7ffb8081 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     result = self.transport._send(
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     raise result
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager Traceback (most recent call last):
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager 
2026-07-24 01:08:57.631 12 ERROR nova.conductor.manager 
2026-07-24 01:08:57.713 12 WARNING nova.scheduler.utils [None req-452282dc-244a-43bd-9b63-339d06f593d4 278467bcbb2b43518f9485e321f3dab9 63ffbd775cac43b692f73a9c7ffb8081 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

  File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 277, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-07-24 01:08:57.714 12 WARNING nova.scheduler.utils [None req-452282dc-244a-43bd-9b63-339d06f593d4 278467bcbb2b43518f9485e321f3dab9 63ffbd775cac43b692f73a9c7ffb8081 - - default default] [instance: 7cb55da3-3518-4d34-9252-655bc73660dc] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.