+ exec nova-conductor --config-file /etc/nova/nova.conf
/var/lib/openstack/lib/python3.12/site-packages/nova/monkey_patch.py:39: EventletDeprecationWarning: 
Eventlet is deprecated. It is currently being maintained in bugfix mode, and
we strongly recommend against using it for new projects.

If you are already using Eventlet, we recommend migrating to a different
framework.  For more detail see
https://eventlet.readthedocs.io/en/latest/asyncio/migration.html

  import eventlet
2026-10-16 15:03:43.685 1 INFO nova.utils [None req-d9868e52-f9b2-4526-923b-d5fd7f5011a4 - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-10-16 15:03:43.870 1 INFO nova.utils [None req-d9868e52-f9b2-4526-923b-d5fd7f5011a4 - - - - - -] The cell worker thread pool MainProcess.cell_worker is shutting down
2026-10-16 15:03:43.871 1 INFO nova.utils [None req-d9868e52-f9b2-4526-923b-d5fd7f5011a4 - - - - - -] The cell worker thread pool MainProcess.cell_worker is closed
2026-10-16 15:03:43.871 1 INFO oslo_service.backend._eventlet.service [None req-d9868e52-f9b2-4526-923b-d5fd7f5011a4 - - - - - -] Starting 2 workers
2026-10-16 15:03:43.880 7 INFO nova.service [-] Starting conductor node (version 33.0.2)
2026-10-16 15:03:43.881 8 INFO nova.service [-] Starting conductor node (version 33.0.2)
2026-10-16 15:03:43.882 1 WARNING oslo_config.cfg [None req-d9868e52-f9b2-4526-923b-d5fd7f5011a4 - - - - - -] 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.
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager [None req-29eb7a79-61cd-4116-b9b1-b6a946f649c7 6b4a79dfd2f04b7d89dd0d1dc982d846 0e847c5a11844d1ebc72acd724ba8dee - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     raise result
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager 
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager 
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager 
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager 
2026-10-16 15:45:03.832 7 ERROR nova.conductor.manager 
2026-10-16 15:45:04.237 7 WARNING nova.scheduler.utils [None req-29eb7a79-61cd-4116-b9b1-b6a946f649c7 6b4a79dfd2f04b7d89dd0d1dc982d846 0e847c5a11844d1ebc72acd724ba8dee - - 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 278, 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. 
2026-10-16 15:45:04.240 7 WARNING nova.scheduler.utils [None req-29eb7a79-61cd-4116-b9b1-b6a946f649c7 6b4a79dfd2f04b7d89dd0d1dc982d846 0e847c5a11844d1ebc72acd724ba8dee - - default default] [instance: f31f3c73-3776-4a30-87e7-01499b93adbe] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:04.298 7 WARNING oslo_config.cfg [None req-29eb7a79-61cd-4116-b9b1-b6a946f649c7 6b4a79dfd2f04b7d89dd0d1dc982d846 0e847c5a11844d1ebc72acd724ba8dee - - 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. 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager [None req-232ed8bd-04af-48e7-9f0d-45a69aaab40d dadd10ddfdfc4db5a45571b11bda06e1 e39ea3271541402eb888a6db0e305697 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     raise result
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager 
2026-10-16 15:45:19.971 8 ERROR nova.conductor.manager 
2026-10-16 15:45:20.335 8 WARNING nova.scheduler.utils [None req-232ed8bd-04af-48e7-9f0d-45a69aaab40d dadd10ddfdfc4db5a45571b11bda06e1 e39ea3271541402eb888a6db0e305697 - - 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 278, 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. 
2026-10-16 15:45:20.337 8 WARNING nova.scheduler.utils [None req-232ed8bd-04af-48e7-9f0d-45a69aaab40d dadd10ddfdfc4db5a45571b11bda06e1 e39ea3271541402eb888a6db0e305697 - - default default] [instance: e4f3098f-6792-4291-923c-b5d4e5136866] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:20.397 8 WARNING oslo_config.cfg [None req-232ed8bd-04af-48e7-9f0d-45a69aaab40d dadd10ddfdfc4db5a45571b11bda06e1 e39ea3271541402eb888a6db0e305697 - - 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. 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager [None req-da5bfe74-fc60-473f-919d-6a0a1c1a08eb 98043bf2840c438ea3045c963475f62b 6a775422377c42a5b778e6cacd077513 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     raise result
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager 
2026-10-16 15:45:24.658 7 ERROR nova.conductor.manager 
2026-10-16 15:45:24.806 7 WARNING nova.scheduler.utils [None req-da5bfe74-fc60-473f-919d-6a0a1c1a08eb 98043bf2840c438ea3045c963475f62b 6a775422377c42a5b778e6cacd077513 - - 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 278, 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. 
2026-10-16 15:45:24.807 7 WARNING nova.scheduler.utils [None req-da5bfe74-fc60-473f-919d-6a0a1c1a08eb 98043bf2840c438ea3045c963475f62b 6a775422377c42a5b778e6cacd077513 - - default default] [instance: 9997e214-b77e-49ce-8efe-3b997e5d685b] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager [None req-e2652b11-85a7-4ce4-8e17-cce305f06a2d 50ed81018a5c449aa8eaa33996eb82bc 78bb91d847a14e159ba1ff19a53e4285 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     raise result
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager 
2026-10-16 15:45:29.987 8 ERROR nova.conductor.manager 
2026-10-16 15:45:30.129 8 WARNING nova.scheduler.utils [None req-e2652b11-85a7-4ce4-8e17-cce305f06a2d 50ed81018a5c449aa8eaa33996eb82bc 78bb91d847a14e159ba1ff19a53e4285 - - 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 278, 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. 
2026-10-16 15:45:30.131 8 WARNING nova.scheduler.utils [None req-e2652b11-85a7-4ce4-8e17-cce305f06a2d 50ed81018a5c449aa8eaa33996eb82bc 78bb91d847a14e159ba1ff19a53e4285 - - default default] [instance: a3be02cf-807c-458e-bdf8-8f10b726ca3c] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager [None req-28224847-e87a-4acd-a6c5-193aa7d3f9a6 4e9559c8de2241a39e09d04c82992b8c 781b236e2a234852b93feebb9f583afb - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     raise result
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager 
2026-10-16 15:45:42.947 7 ERROR nova.conductor.manager 
2026-10-16 15:45:43.088 7 WARNING nova.scheduler.utils [None req-28224847-e87a-4acd-a6c5-193aa7d3f9a6 4e9559c8de2241a39e09d04c82992b8c 781b236e2a234852b93feebb9f583afb - - 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 278, 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. 
2026-10-16 15:45:43.089 7 WARNING nova.scheduler.utils [None req-28224847-e87a-4acd-a6c5-193aa7d3f9a6 4e9559c8de2241a39e09d04c82992b8c 781b236e2a234852b93feebb9f583afb - - default default] [instance: 9a9dcca6-b59d-4306-b68c-d55083c9382f] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager [None req-ed409ad7-529f-4de9-95db-9e1eec5e2ced d1e81f4ea3fe4114bc3287f1b71cb1a3 0d3fb670b5ea4edeb52ed6b2468b1b5f - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     raise result
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager 
2026-10-16 15:45:47.946 8 ERROR nova.conductor.manager 
2026-10-16 15:45:48.101 8 WARNING nova.scheduler.utils [None req-ed409ad7-529f-4de9-95db-9e1eec5e2ced d1e81f4ea3fe4114bc3287f1b71cb1a3 0d3fb670b5ea4edeb52ed6b2468b1b5f - - 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 278, 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. 
2026-10-16 15:45:48.102 8 WARNING nova.scheduler.utils [None req-ed409ad7-529f-4de9-95db-9e1eec5e2ced d1e81f4ea3fe4114bc3287f1b71cb1a3 0d3fb670b5ea4edeb52ed6b2468b1b5f - - default default] [instance: 26558b14-b594-4166-a29d-44ceea25abc3] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager [None req-bbb51f1f-e883-42bf-8b0a-041f400eda74 531c8db504054e3aa191774744552c52 1222a19041f7435aa079828c104d0d13 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     raise result
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager 
2026-10-16 15:47:18.618 7 ERROR nova.conductor.manager 
2026-10-16 15:47:18.748 7 WARNING nova.scheduler.utils [None req-bbb51f1f-e883-42bf-8b0a-041f400eda74 531c8db504054e3aa191774744552c52 1222a19041f7435aa079828c104d0d13 - - 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 278, 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. 
2026-10-16 15:47:18.749 7 WARNING nova.scheduler.utils [None req-bbb51f1f-e883-42bf-8b0a-041f400eda74 531c8db504054e3aa191774744552c52 1222a19041f7435aa079828c104d0d13 - - default default] [instance: 3c1113c6-beda-448a-802c-a7108e7cf896] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager [None req-9a53d6c6-de83-4864-87fa-6f0a92b531c9 30e9aa050bbd4337a5a6e1c4a0a46ecb ef65cb0c15f14fd9bcade2b4f17594e6 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     raise result
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager 
2026-10-16 15:48:07.237 8 ERROR nova.conductor.manager 
2026-10-16 15:48:07.384 8 WARNING nova.scheduler.utils [None req-9a53d6c6-de83-4864-87fa-6f0a92b531c9 30e9aa050bbd4337a5a6e1c4a0a46ecb ef65cb0c15f14fd9bcade2b4f17594e6 - - 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 278, 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. 
2026-10-16 15:48:07.386 8 WARNING nova.scheduler.utils [None req-9a53d6c6-de83-4864-87fa-6f0a92b531c9 30e9aa050bbd4337a5a6e1c4a0a46ecb ef65cb0c15f14fd9bcade2b4f17594e6 - - default default] [instance: b2a0edd0-6e08-4292-89c0-5faf126a6167] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager [None req-36279adc-ac16-4dda-91d1-7e23ef6eab0f 19f93ac5b4934a2c830d1764e7e62e8d 2df26a2ad2d94490a04b0df042285736 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     raise result
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager 
2026-10-16 15:48:10.421 7 ERROR nova.conductor.manager 
2026-10-16 15:48:10.547 7 WARNING nova.scheduler.utils [None req-36279adc-ac16-4dda-91d1-7e23ef6eab0f 19f93ac5b4934a2c830d1764e7e62e8d 2df26a2ad2d94490a04b0df042285736 - - 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 278, 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. 
2026-10-16 15:48:10.548 7 WARNING nova.scheduler.utils [None req-36279adc-ac16-4dda-91d1-7e23ef6eab0f 19f93ac5b4934a2c830d1764e7e62e8d 2df26a2ad2d94490a04b0df042285736 - - default default] [instance: 9f26ddeb-d0e7-4a0b-8ef0-559c106e531c] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager [None req-51816b09-1d85-411b-9cb2-0153f7a38844 270e8b23aa76472086013f6e56f4d873 0bb495f5d18f4da2aa502bc0550cb2a9 - - 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 278, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1677, in schedule_and_build_instances
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 965, in _schedule_instances
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 794, in send
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 786, in _send
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     raise result
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 278, in select_destinations
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager 
2026-10-16 15:50:59.760 8 ERROR nova.conductor.manager 
2026-10-16 15:50:59.838 8 WARNING nova.scheduler.utils [None req-51816b09-1d85-411b-9cb2-0153f7a38844 270e8b23aa76472086013f6e56f4d873 0bb495f5d18f4da2aa502bc0550cb2a9 - - 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 278, 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. 
2026-10-16 15:50:59.839 8 WARNING nova.scheduler.utils [None req-51816b09-1d85-411b-9cb2-0153f7a38844 270e8b23aa76472086013f6e56f4d873 0bb495f5d18f4da2aa502bc0550cb2a9 - - default default] [instance: 7651e5e2-53b6-4152-8e2c-5fb4bba4bc6a] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.