+ exec nova-conductor --config-file /etc/nova/nova.conf
3 RLock(s) were not greened, to fix this error make sure you run eventlet.monkey_patch() before importing any other modules.
2026-02-25 22:21:39.565 1 INFO oslo_service.service [None req-d84ec0a5-c81e-4412-969b-35373eba57a9 - - - - - -] Starting 2 workers
2026-02-25 22:21:39.574 7 INFO nova.service [-] Starting conductor node (version 30.2.2)
2026-02-25 22:21:39.575 8 INFO nova.service [-] Starting conductor node (version 30.2.2)
2026-02-25 22:21:39.579 1 WARNING oslo_config.cfg [None req-d84ec0a5-c81e-4412-969b-35373eba57a9 - - - - - -] 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.
2026-02-25 22:39:36.992 7 WARNING oslo.service.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 12.25 sec
2026-02-25 22:39:36.994 8 WARNING oslo.service.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 12.24 sec
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager [None req-5b602ba6-2f41-46d6-ac40-323454d514f2 8403e5b44e7d41b286776218b53d7c62 f2f10f9172a5485ea51528bb011dee6a - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:30.612 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
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     raise result
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager 
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager 
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager 
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager 
2026-02-25 22:58:30.612 8 ERROR nova.conductor.manager 
2026-02-25 22:58:30.838 8 WARNING nova.scheduler.utils [None req-5b602ba6-2f41-46d6-ac40-323454d514f2 8403e5b44e7d41b286776218b53d7c62 f2f10f9172a5485ea51528bb011dee6a - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 22:58:30.839 8 WARNING nova.scheduler.utils [None req-5b602ba6-2f41-46d6-ac40-323454d514f2 8403e5b44e7d41b286776218b53d7c62 f2f10f9172a5485ea51528bb011dee6a - - default default] [instance: 332fff85-16ca-4467-b051-536c92f04e6b] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:30.882 8 WARNING oslo_config.cfg [None req-5b602ba6-2f41-46d6-ac40-323454d514f2 8403e5b44e7d41b286776218b53d7c62 f2f10f9172a5485ea51528bb011dee6a - - 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. 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager [None req-fdae1cf3-ccae-4415-a4a6-fa94483346f8 264a6dd884c8474387476347359fcbdb 87859779c03e4fce93291ef281ee288f - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:39.289 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
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     raise result
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager 
2026-02-25 22:58:39.289 7 ERROR nova.conductor.manager 
2026-02-25 22:58:39.486 7 WARNING nova.scheduler.utils [None req-fdae1cf3-ccae-4415-a4a6-fa94483346f8 264a6dd884c8474387476347359fcbdb 87859779c03e4fce93291ef281ee288f - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 22:58:39.487 7 WARNING nova.scheduler.utils [None req-fdae1cf3-ccae-4415-a4a6-fa94483346f8 264a6dd884c8474387476347359fcbdb 87859779c03e4fce93291ef281ee288f - - default default] [instance: f3081587-6f08-496d-a9c2-6eb1706c79f4] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:39.519 7 WARNING oslo_config.cfg [None req-fdae1cf3-ccae-4415-a4a6-fa94483346f8 264a6dd884c8474387476347359fcbdb 87859779c03e4fce93291ef281ee288f - - 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. 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager [None req-10bd34e6-4a2a-487e-8182-7ab0be4d2c7b a4f2b0fa163447cb992e5e215ade08c0 4834e06156674861916bcbaf79ce36f7 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:40.698 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
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     raise result
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager 
2026-02-25 22:58:40.698 8 ERROR nova.conductor.manager 
2026-02-25 22:58:40.789 8 WARNING nova.scheduler.utils [None req-10bd34e6-4a2a-487e-8182-7ab0be4d2c7b a4f2b0fa163447cb992e5e215ade08c0 4834e06156674861916bcbaf79ce36f7 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 22:58:40.789 8 WARNING nova.scheduler.utils [None req-10bd34e6-4a2a-487e-8182-7ab0be4d2c7b a4f2b0fa163447cb992e5e215ade08c0 4834e06156674861916bcbaf79ce36f7 - - default default] [instance: 8e43de23-871c-4716-9dbf-36fa04e5abda] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager [None req-69cf2651-d561-4c50-8073-a9f036678269 ecb03d715fb340548b598189e6378a81 d1b1642d01ed42e59b673e85262a9d58 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:45.583 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
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     raise result
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager 
2026-02-25 22:58:45.583 7 ERROR nova.conductor.manager 
2026-02-25 22:58:45.668 7 WARNING nova.scheduler.utils [None req-69cf2651-d561-4c50-8073-a9f036678269 ecb03d715fb340548b598189e6378a81 d1b1642d01ed42e59b673e85262a9d58 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 22:58:45.669 7 WARNING nova.scheduler.utils [None req-69cf2651-d561-4c50-8073-a9f036678269 ecb03d715fb340548b598189e6378a81 d1b1642d01ed42e59b673e85262a9d58 - - default default] [instance: 44b7ac32-979a-499f-ace7-d70eb13e7598] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager [None req-64d859ca-da7d-4fa0-8bdb-2483ae0d7cbe 66bbc38ffeba4c068d1d13a1120a47c1 aa229a9cbf8944349c3c5d6ef456e084 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:53.742 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
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     raise result
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager 
2026-02-25 22:58:53.742 8 ERROR nova.conductor.manager 
2026-02-25 22:58:53.828 8 WARNING nova.scheduler.utils [None req-64d859ca-da7d-4fa0-8bdb-2483ae0d7cbe 66bbc38ffeba4c068d1d13a1120a47c1 aa229a9cbf8944349c3c5d6ef456e084 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 22:58:53.829 8 WARNING nova.scheduler.utils [None req-64d859ca-da7d-4fa0-8bdb-2483ae0d7cbe 66bbc38ffeba4c068d1d13a1120a47c1 aa229a9cbf8944349c3c5d6ef456e084 - - default default] [instance: 4ebe9ec9-e4c9-4e04-989f-d24860a6196c] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager [None req-86ff1451-d8b7-4821-a233-157386572cb8 ce08c1814b10484cb8c449ff0f0f490c d78ef4fb91ba400c86a235c2bf8052ea - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:54.284 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
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     raise result
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager 
2026-02-25 22:58:54.284 7 ERROR nova.conductor.manager 
2026-02-25 22:58:54.365 7 WARNING nova.scheduler.utils [None req-86ff1451-d8b7-4821-a233-157386572cb8 ce08c1814b10484cb8c449ff0f0f490c d78ef4fb91ba400c86a235c2bf8052ea - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 22:58:54.366 7 WARNING nova.scheduler.utils [None req-86ff1451-d8b7-4821-a233-157386572cb8 ce08c1814b10484cb8c449ff0f0f490c d78ef4fb91ba400c86a235c2bf8052ea - - default default] [instance: de78c3d9-4da7-445d-bda9-3b7545875576] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager [None req-57c4f02e-2939-4545-92d4-acd54a0cd27a 6d76ab61673b4a55bef14a4432460964 76b752336d024282a04963994e99b1aa - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:05.774 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
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     raise result
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager 
2026-02-25 23:00:05.774 8 ERROR nova.conductor.manager 
2026-02-25 23:00:05.908 8 WARNING nova.scheduler.utils [None req-57c4f02e-2939-4545-92d4-acd54a0cd27a 6d76ab61673b4a55bef14a4432460964 76b752336d024282a04963994e99b1aa - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 23:00:05.909 8 WARNING nova.scheduler.utils [None req-57c4f02e-2939-4545-92d4-acd54a0cd27a 6d76ab61673b4a55bef14a4432460964 76b752336d024282a04963994e99b1aa - - default default] [instance: cd0e9bd9-49df-41e2-895e-2b808a0c1959] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager [None req-526a81fa-d306-4ede-91a2-d1635ddac783 5fdca79a5d3248f8bfd0b4e8410afcbe 99dadb8cdd204ee0b6360a39e342a4c2 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:08.210 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
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     raise result
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager 
2026-02-25 23:00:08.210 7 ERROR nova.conductor.manager 
2026-02-25 23:00:08.297 7 WARNING nova.scheduler.utils [None req-526a81fa-d306-4ede-91a2-d1635ddac783 5fdca79a5d3248f8bfd0b4e8410afcbe 99dadb8cdd204ee0b6360a39e342a4c2 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 23:00:08.298 7 WARNING nova.scheduler.utils [None req-526a81fa-d306-4ede-91a2-d1635ddac783 5fdca79a5d3248f8bfd0b4e8410afcbe 99dadb8cdd204ee0b6360a39e342a4c2 - - default default] [instance: 8889c01b-7d2d-43b8-8060-ea5368e0d6e3] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager [None req-54829cb1-ed75-4b4c-bf04-dbb282ddfce8 30b66af7e151425ca81b6577ee99d454 b688f64e5372431d9248a0e4cd5b29b8 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:12.348 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
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     raise result
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager 
2026-02-25 23:00:12.348 8 ERROR nova.conductor.manager 
2026-02-25 23:00:12.460 8 WARNING nova.scheduler.utils [None req-54829cb1-ed75-4b4c-bf04-dbb282ddfce8 30b66af7e151425ca81b6577ee99d454 b688f64e5372431d9248a0e4cd5b29b8 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 23:00:12.460 8 WARNING nova.scheduler.utils [None req-54829cb1-ed75-4b4c-bf04-dbb282ddfce8 30b66af7e151425ca81b6577ee99d454 b688f64e5372431d9248a0e4cd5b29b8 - - default default] [instance: f561ef3b-5230-47d4-b469-217d10ef975d] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager [None req-ed8e54dc-7185-432d-8b69-11887ed6751e 9c6bae79054644a4b1b60f8a32a0b9d0 f2b4405c6af44cc0b0287894cca8b192 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:33.662 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
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 190, in call
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 799, in send
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 791, in _send
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     raise result
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 262, in inner
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, in select_destinations
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager 
2026-02-25 23:00:33.662 7 ERROR nova.conductor.manager 
2026-02-25 23:00:33.734 7 WARNING nova.scheduler.utils [None req-ed8e54dc-7185-432d-8b69-11887ed6751e 9c6bae79054644a4b1b60f8a32a0b9d0 f2b4405c6af44cc0b0287894cca8b192 - - 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 262, in inner
    return func(*args, **kwargs)
           ^^^^^^^^^^^^^^^^^^^^^

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 243, 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. 
2026-02-25 23:00:33.735 7 WARNING nova.scheduler.utils [None req-ed8e54dc-7185-432d-8b69-11887ed6751e 9c6bae79054644a4b1b60f8a32a0b9d0 f2b4405c6af44cc0b0287894cca8b192 - - default default] [instance: 947fce1d-da0c-4e3f-a8e7-4af7b65ffdf2] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.