+ exec nova-conductor --config-file /etc/nova/nova.conf
2026-02-26 03:33:32.909 1 INFO nova.utils [None req-2e3bd35a-e42b-4953-a0be-a3cf295b86c0 - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-02-26 03:33:33.002 1 INFO oslo_service.backend._eventlet.service [None req-2e3bd35a-e42b-4953-a0be-a3cf295b86c0 - - - - - -] Starting 2 workers
2026-02-26 03:33:33.013 8 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-02-26 03:33:33.014 7 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-02-26 03:33:33.015 1 WARNING oslo_config.cfg [None req-2e3bd35a-e42b-4953-a0be-a3cf295b86c0 - - - - - -] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager [None req-65c73fc4-18da-45f6-9de3-654c24ee687d c572cdfc5e764494979dd59940f9816e e08f15612ae744df98842dde10153ef6 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     raise result
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager 
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager 
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager 
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager 
2026-02-26 04:08:53.828 8 ERROR nova.conductor.manager 
2026-02-26 04:08:54.066 8 WARNING nova.scheduler.utils [None req-65c73fc4-18da-45f6-9de3-654c24ee687d c572cdfc5e764494979dd59940f9816e e08f15612ae744df98842dde10153ef6 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:54.067 8 WARNING nova.scheduler.utils [None req-65c73fc4-18da-45f6-9de3-654c24ee687d c572cdfc5e764494979dd59940f9816e e08f15612ae744df98842dde10153ef6 - - default default] [instance: 62bd65f4-e7bd-4c94-8e8f-d9a16127df65] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:54.115 8 WARNING oslo_config.cfg [None req-65c73fc4-18da-45f6-9de3-654c24ee687d c572cdfc5e764494979dd59940f9816e e08f15612ae744df98842dde10153ef6 - - default default] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager [None req-a2f1766f-cc09-482f-b9de-35c18a6d6689 1e802266dd1d48ddb4b3227ea9dc80ea 828e73f68aa14f28941fa5208079232a - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager 
2026-02-26 04:08:58.761 7 ERROR nova.conductor.manager 
2026-02-26 04:08:58.938 7 WARNING nova.scheduler.utils [None req-a2f1766f-cc09-482f-b9de-35c18a6d6689 1e802266dd1d48ddb4b3227ea9dc80ea 828e73f68aa14f28941fa5208079232a - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:58.939 7 WARNING nova.scheduler.utils [None req-a2f1766f-cc09-482f-b9de-35c18a6d6689 1e802266dd1d48ddb4b3227ea9dc80ea 828e73f68aa14f28941fa5208079232a - - default default] [instance: 5bfe4bf9-9739-4e34-9127-ecc2f45a3d11] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:08:58.969 7 WARNING oslo_config.cfg [None req-a2f1766f-cc09-482f-b9de-35c18a6d6689 1e802266dd1d48ddb4b3227ea9dc80ea 828e73f68aa14f28941fa5208079232a - - default default] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager [None req-aef95561-1519-46c2-9d54-c138462f2f9d f3ac93d87a684d7bb6be385ec26a8e2c 3649db0ed7ee4337b8720af1e460be4f - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager 
2026-02-26 04:09:20.366 7 ERROR nova.conductor.manager 
2026-02-26 04:09:20.498 7 WARNING nova.scheduler.utils [None req-aef95561-1519-46c2-9d54-c138462f2f9d f3ac93d87a684d7bb6be385ec26a8e2c 3649db0ed7ee4337b8720af1e460be4f - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:20.499 7 WARNING nova.scheduler.utils [None req-aef95561-1519-46c2-9d54-c138462f2f9d f3ac93d87a684d7bb6be385ec26a8e2c 3649db0ed7ee4337b8720af1e460be4f - - default default] [instance: 9adf8965-36a8-485f-ae1d-a79c68b17f0e] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager [None req-6b278125-cf4b-4f3b-b8e1-82d1f4275b36 472fcb8b9c1e49908f21267f824b7f8a 054cb6004c0e448da3e62ec2665d703b - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:37.583 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
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager 
2026-02-26 04:09:37.583 7 ERROR nova.conductor.manager 
2026-02-26 04:09:37.682 7 WARNING nova.scheduler.utils [None req-6b278125-cf4b-4f3b-b8e1-82d1f4275b36 472fcb8b9c1e49908f21267f824b7f8a 054cb6004c0e448da3e62ec2665d703b - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:37.683 7 WARNING nova.scheduler.utils [None req-6b278125-cf4b-4f3b-b8e1-82d1f4275b36 472fcb8b9c1e49908f21267f824b7f8a 054cb6004c0e448da3e62ec2665d703b - - default default] [instance: 92aed8b2-a1f8-44fb-ae0b-4d24b4148ef9] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager [None req-fd99373b-5d1d-4bb6-9b89-9e442eadc391 2f43f7f649914d6bb09085958e8de7bf 266fe8f1653a49f69599b4ebf3c6413f - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager 
2026-02-26 04:09:51.084 7 ERROR nova.conductor.manager 
2026-02-26 04:09:51.163 7 WARNING nova.scheduler.utils [None req-fd99373b-5d1d-4bb6-9b89-9e442eadc391 2f43f7f649914d6bb09085958e8de7bf 266fe8f1653a49f69599b4ebf3c6413f - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:09:51.163 7 WARNING nova.scheduler.utils [None req-fd99373b-5d1d-4bb6-9b89-9e442eadc391 2f43f7f649914d6bb09085958e8de7bf 266fe8f1653a49f69599b4ebf3c6413f - - default default] [instance: 1e1a3f29-86fc-4a83-b491-8f44444c0ab5] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager [None req-42179401-6ae4-4886-a4a2-2cc1a907cb9e 90b4cb297e774ffdaac67c0d35fd2d51 9c095198ebe74cc99869d5787f159d0e - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager 
2026-02-26 04:10:03.381 7 ERROR nova.conductor.manager 
2026-02-26 04:10:03.491 7 WARNING nova.scheduler.utils [None req-42179401-6ae4-4886-a4a2-2cc1a907cb9e 90b4cb297e774ffdaac67c0d35fd2d51 9c095198ebe74cc99869d5787f159d0e - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:03.491 7 WARNING nova.scheduler.utils [None req-42179401-6ae4-4886-a4a2-2cc1a907cb9e 90b4cb297e774ffdaac67c0d35fd2d51 9c095198ebe74cc99869d5787f159d0e - - default default] [instance: 157ecd71-b41e-40c4-bf10-312844ba3b1d] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager [None req-e3f0415f-67c1-4024-b762-0807357d3588 a2b7ab4c02b54f489c100eccedf62e11 4675070028a944d7bdac731e019b0e96 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager 
2026-02-26 04:10:11.911 7 ERROR nova.conductor.manager 
2026-02-26 04:10:12.027 7 WARNING nova.scheduler.utils [None req-e3f0415f-67c1-4024-b762-0807357d3588 a2b7ab4c02b54f489c100eccedf62e11 4675070028a944d7bdac731e019b0e96 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:12.032 7 WARNING nova.scheduler.utils [None req-e3f0415f-67c1-4024-b762-0807357d3588 a2b7ab4c02b54f489c100eccedf62e11 4675070028a944d7bdac731e019b0e96 - - default default] [instance: 68826890-526a-4e04-95b1-d7613af0c7c7] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager [None req-f9aac4c7-5af8-4ce7-9bcb-16d3d44fa5c1 0935e2015b414d4da9e1b095d50a592c 694c337e52e94f8eb6e8c6f869da6085 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     raise result
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager 
2026-02-26 04:10:12.898 8 ERROR nova.conductor.manager 
2026-02-26 04:10:13.029 8 WARNING nova.scheduler.utils [None req-f9aac4c7-5af8-4ce7-9bcb-16d3d44fa5c1 0935e2015b414d4da9e1b095d50a592c 694c337e52e94f8eb6e8c6f869da6085 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:13.030 8 WARNING nova.scheduler.utils [None req-f9aac4c7-5af8-4ce7-9bcb-16d3d44fa5c1 0935e2015b414d4da9e1b095d50a592c 694c337e52e94f8eb6e8c6f869da6085 - - default default] [instance: f518ef17-68d7-46ce-8795-ef8feb858e1e] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager [None req-e904b459-47b0-4e0c-a476-764e92dfa677 3612abb377094de6ab1b8da77d3f2d7d 91076bf1bd7f4079ab61c810ef545b9f - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager 
2026-02-26 04:10:13.151 7 ERROR nova.conductor.manager 
2026-02-26 04:10:13.264 7 WARNING nova.scheduler.utils [None req-e904b459-47b0-4e0c-a476-764e92dfa677 3612abb377094de6ab1b8da77d3f2d7d 91076bf1bd7f4079ab61c810ef545b9f - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:10:13.265 7 WARNING nova.scheduler.utils [None req-e904b459-47b0-4e0c-a476-764e92dfa677 3612abb377094de6ab1b8da77d3f2d7d 91076bf1bd7f4079ab61c810ef545b9f - - default default] [instance: 1e5dc2d4-60c3-4ada-9f7f-81f927c5d1ef] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager [None req-f48b573c-1953-4fe4-b212-4df22f95a195 d0d652eb21c34895833c5e83e585ebcf c8749d94d33a493ab0b465f259601381 - - default default] Failed to schedule instances: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found.
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     raise result
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager 
2026-02-26 04:11:07.313 7 ERROR nova.conductor.manager 
2026-02-26 04:11:07.436 7 WARNING nova.scheduler.utils [None req-f48b573c-1953-4fe4-b212-4df22f95a195 d0d652eb21c34895833c5e83e585ebcf c8749d94d33a493ab0b465f259601381 - - default default] Failed to compute_task_build_instances: No valid host was found. 
Traceback (most recent call last):

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

  File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
    raise exception.NoValidHost(reason="")

nova.exception.NoValidHost: No valid host was found. 
: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-26 04:11:07.437 7 WARNING nova.scheduler.utils [None req-f48b573c-1953-4fe4-b212-4df22f95a195 d0d652eb21c34895833c5e83e585ebcf c8749d94d33a493ab0b465f259601381 - - default default] [instance: b75a6f2d-b992-4800-8e21-cf209422c405] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.