+ exec nova-conductor --config-file /etc/nova/nova.conf
2026-02-26 03:31:00.680 1 INFO nova.utils [None req-69aff1e1-7635-49aa-8c45-851ad3a92eb1 - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-02-26 03:31:00.773 1 INFO oslo_service.backend._eventlet.service [None req-69aff1e1-7635-49aa-8c45-851ad3a92eb1 - - - - - -] Starting 2 workers
2026-02-26 03:31:00.781 8 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-02-26 03:31:00.781 7 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-02-26 03:31:00.784 1 WARNING oslo_config.cfg [None req-69aff1e1-7635-49aa-8c45-851ad3a92eb1 - - - - - -] 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.
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager [None req-d1b35d2e-0c82-40f1-9fed-d411cec91f0d 6fcd5e02843c4e77942f3395a50ba241 8d75cedd32cf407f9a4cecacb9c9175c - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     raise result
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager 
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager 
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager 
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager 
2026-02-26 04:07:03.409 8 ERROR nova.conductor.manager 
2026-02-26 04:07:03.606 8 WARNING nova.scheduler.utils [None req-d1b35d2e-0c82-40f1-9fed-d411cec91f0d 6fcd5e02843c4e77942f3395a50ba241 8d75cedd32cf407f9a4cecacb9c9175c - - 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 255, 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. 
2026-02-26 04:07:03.608 8 WARNING nova.scheduler.utils [None req-d1b35d2e-0c82-40f1-9fed-d411cec91f0d 6fcd5e02843c4e77942f3395a50ba241 8d75cedd32cf407f9a4cecacb9c9175c - - default default] [instance: 3a55cb15-0cf4-4f67-add4-2f826ad48fe0] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:03.640 8 WARNING oslo_config.cfg [None req-d1b35d2e-0c82-40f1-9fed-d411cec91f0d 6fcd5e02843c4e77942f3395a50ba241 8d75cedd32cf407f9a4cecacb9c9175c - - default default] 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.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager [None req-c8faa803-f844-4463-b042-39c923f86c85 e0bb4256c37943ae8c5e6d1e80a9b27f abcb998d2e5e42bc849f736d0561d3e0 - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager 
2026-02-26 04:07:07.857 7 ERROR nova.conductor.manager 
2026-02-26 04:07:08.053 7 WARNING nova.scheduler.utils [None req-c8faa803-f844-4463-b042-39c923f86c85 e0bb4256c37943ae8c5e6d1e80a9b27f abcb998d2e5e42bc849f736d0561d3e0 - - 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 255, 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. 
2026-02-26 04:07:08.054 7 WARNING nova.scheduler.utils [None req-c8faa803-f844-4463-b042-39c923f86c85 e0bb4256c37943ae8c5e6d1e80a9b27f abcb998d2e5e42bc849f736d0561d3e0 - - default default] [instance: 91190c63-3f47-46f2-adf7-b80a43d0d45e] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:08.093 7 WARNING oslo_config.cfg [None req-c8faa803-f844-4463-b042-39c923f86c85 e0bb4256c37943ae8c5e6d1e80a9b27f abcb998d2e5e42bc849f736d0561d3e0 - - default default] 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.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager [None req-900e7b75-8d78-46ef-87e8-e76d2d3881e8 8b7cc825ae544c5fa42bc8bf8030a20b 3463c8af9d954c30b2adc3e89236c9d1 - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager 
2026-02-26 04:07:22.185 7 ERROR nova.conductor.manager 
2026-02-26 04:07:22.272 7 WARNING nova.scheduler.utils [None req-900e7b75-8d78-46ef-87e8-e76d2d3881e8 8b7cc825ae544c5fa42bc8bf8030a20b 3463c8af9d954c30b2adc3e89236c9d1 - - 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 255, 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. 
2026-02-26 04:07:22.273 7 WARNING nova.scheduler.utils [None req-900e7b75-8d78-46ef-87e8-e76d2d3881e8 8b7cc825ae544c5fa42bc8bf8030a20b 3463c8af9d954c30b2adc3e89236c9d1 - - default default] [instance: abb0dafe-a8dc-4a19-bbfd-47294c408e35] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager [None req-6db81275-f72d-4455-bedc-1c96857b891a d87753b0f2174e6cb2f071f96b4014ed 9c558a5ee76c47be9cf73d019596f9eb - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager 
2026-02-26 04:07:28.055 7 ERROR nova.conductor.manager 
2026-02-26 04:07:28.141 7 WARNING nova.scheduler.utils [None req-6db81275-f72d-4455-bedc-1c96857b891a d87753b0f2174e6cb2f071f96b4014ed 9c558a5ee76c47be9cf73d019596f9eb - - 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 255, 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. 
2026-02-26 04:07:28.141 7 WARNING nova.scheduler.utils [None req-6db81275-f72d-4455-bedc-1c96857b891a d87753b0f2174e6cb2f071f96b4014ed 9c558a5ee76c47be9cf73d019596f9eb - - default default] [instance: 6bfd33fc-c6af-4394-8a60-4728021be847] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager [None req-ab53945c-2d08-4a32-8f24-64cf18fcc25f 0cbf9cdff1db44cf9bc2edff3c15f064 b1fdcf24b1314f438ce350be6edcc715 - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager 
2026-02-26 04:07:38.637 7 ERROR nova.conductor.manager 
2026-02-26 04:07:38.723 7 WARNING nova.scheduler.utils [None req-ab53945c-2d08-4a32-8f24-64cf18fcc25f 0cbf9cdff1db44cf9bc2edff3c15f064 b1fdcf24b1314f438ce350be6edcc715 - - 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 255, 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. 
2026-02-26 04:07:38.724 7 WARNING nova.scheduler.utils [None req-ab53945c-2d08-4a32-8f24-64cf18fcc25f 0cbf9cdff1db44cf9bc2edff3c15f064 b1fdcf24b1314f438ce350be6edcc715 - - default default] [instance: 3299020c-1da7-45dd-a810-989bcafcebad] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager [None req-a43153f6-f786-4a04-8a7b-5bb75892dc89 2a38953a865c44578318430ff9960f0c 789f8df98b63452788fa8a2227d716ff - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     raise result
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager 
2026-02-26 04:07:55.503 8 ERROR nova.conductor.manager 
2026-02-26 04:07:55.603 8 WARNING nova.scheduler.utils [None req-a43153f6-f786-4a04-8a7b-5bb75892dc89 2a38953a865c44578318430ff9960f0c 789f8df98b63452788fa8a2227d716ff - - 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 255, 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. 
2026-02-26 04:07:55.604 8 WARNING nova.scheduler.utils [None req-a43153f6-f786-4a04-8a7b-5bb75892dc89 2a38953a865c44578318430ff9960f0c 789f8df98b63452788fa8a2227d716ff - - default default] [instance: 07c986e1-9bf6-4c57-8875-aa9dacc10427] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager [None req-4646265a-12b7-45bb-a04c-20815aa3d983 333560fdb5e8418fa2868f99b2804f93 d2b51a81c5044a7aa6ab993432f89708 - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     raise result
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager 
2026-02-26 04:08:56.806 8 ERROR nova.conductor.manager 
2026-02-26 04:08:56.928 8 WARNING nova.scheduler.utils [None req-4646265a-12b7-45bb-a04c-20815aa3d983 333560fdb5e8418fa2868f99b2804f93 d2b51a81c5044a7aa6ab993432f89708 - - 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 255, 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. 
2026-02-26 04:08:56.929 8 WARNING nova.scheduler.utils [None req-4646265a-12b7-45bb-a04c-20815aa3d983 333560fdb5e8418fa2868f99b2804f93 d2b51a81c5044a7aa6ab993432f89708 - - default default] [instance: 5610acc2-932b-4570-967a-5250f4dc75d1] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager [None req-f5138087-27e6-458a-a398-136096d7ee57 2b32b66b53c843eea9b64ef33f65b2fc 0a4b121a63f24fc0949ebe72274a8942 - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager 
2026-02-26 04:08:59.018 7 ERROR nova.conductor.manager 
2026-02-26 04:08:59.107 7 WARNING nova.scheduler.utils [None req-f5138087-27e6-458a-a398-136096d7ee57 2b32b66b53c843eea9b64ef33f65b2fc 0a4b121a63f24fc0949ebe72274a8942 - - 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 255, 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. 
2026-02-26 04:08:59.108 7 WARNING nova.scheduler.utils [None req-f5138087-27e6-458a-a398-136096d7ee57 2b32b66b53c843eea9b64ef33f65b2fc 0a4b121a63f24fc0949ebe72274a8942 - - default default] [instance: e8ddbd8b-e0ca-4f3c-9fe0-8fb6d912b144] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager [None req-6e66e39e-5bad-41ad-9579-3a8c05e11853 0b8cd95c31994ad7b5a4716c48f34754 d0f62979527a4a6f8a87ddc97dc47f33 - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     raise result
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager 
2026-02-26 04:09:41.181 8 ERROR nova.conductor.manager 
2026-02-26 04:09:41.270 8 WARNING nova.scheduler.utils [None req-6e66e39e-5bad-41ad-9579-3a8c05e11853 0b8cd95c31994ad7b5a4716c48f34754 d0f62979527a4a6f8a87ddc97dc47f33 - - 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 255, 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. 
2026-02-26 04:09:41.270 8 WARNING nova.scheduler.utils [None req-6e66e39e-5bad-41ad-9579-3a8c05e11853 0b8cd95c31994ad7b5a4716c48f34754 d0f62979527a4a6f8a87ddc97dc47f33 - - default default] [instance: 87bfb97c-58be-45cd-b649-f213fd0c42d3] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager [None req-797747ee-e328-461b-814e-d4c5516376a0 69d354f7afc2486c9712a3fa217ce638 e117bc3b248d44b197dc4296b110836f - - 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 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager 
2026-02-26 04:09:42.219 7 ERROR nova.conductor.manager 
2026-02-26 04:09:42.334 7 WARNING nova.scheduler.utils [None req-797747ee-e328-461b-814e-d4c5516376a0 69d354f7afc2486c9712a3fa217ce638 e117bc3b248d44b197dc4296b110836f - - 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 255, 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. 
2026-02-26 04:09:42.335 7 WARNING nova.scheduler.utils [None req-797747ee-e328-461b-814e-d4c5516376a0 69d354f7afc2486c9712a3fa217ce638 e117bc3b248d44b197dc4296b110836f - - default default] [instance: 99f5c0a2-f1a3-472e-9f6c-196ef2009cee] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.