+ exec nova-conductor --config-file /etc/nova/nova.conf
2026-02-25 20:22:32.327 1 INFO nova.utils [None req-c78b5373-239c-4f75-b1f6-2916e4ae400c - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-02-25 20:22:32.456 1 INFO oslo_service.backend._eventlet.service [None req-c78b5373-239c-4f75-b1f6-2916e4ae400c - - - - - -] Starting 2 workers
2026-02-25 20:22:32.465 8 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-02-25 20:22:32.485 7 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-02-25 20:22:32.494 1 WARNING oslo_config.cfg [None req-c78b5373-239c-4f75-b1f6-2916e4ae400c - - - - - -] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager [None req-986ee098-e6c6-4ded-9373-81a41f10e821 5e034f681e96436db2166a78156b31e6 3817eb1ff25847d692da0d63c71ed0a8 - - 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.
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     raise result
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager 
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager 
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager 
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager 
2026-02-25 20:58:55.140 8 ERROR nova.conductor.manager 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager [None req-76171325-c9ab-47e7-a727-28775f4d583d 2dbb72a92771408495deac425dfdfb0f 73f5637f0c8e44a5a441383940f5e993 - - 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.
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     raise result
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager 
2026-02-25 20:58:55.192 7 ERROR nova.conductor.manager 
2026-02-25 20:58:55.358 8 WARNING nova.scheduler.utils [None req-986ee098-e6c6-4ded-9373-81a41f10e821 5e034f681e96436db2166a78156b31e6 3817eb1ff25847d692da0d63c71ed0a8 - - 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. 
2026-02-25 20:58:55.360 8 WARNING nova.scheduler.utils [None req-986ee098-e6c6-4ded-9373-81a41f10e821 5e034f681e96436db2166a78156b31e6 3817eb1ff25847d692da0d63c71ed0a8 - - default default] [instance: a42014ae-8dcd-4fc7-baf4-b54772212998] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:58:55.395 7 WARNING nova.scheduler.utils [None req-76171325-c9ab-47e7-a727-28775f4d583d 2dbb72a92771408495deac425dfdfb0f 73f5637f0c8e44a5a441383940f5e993 - - 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. 
2026-02-25 20:58:55.397 7 WARNING nova.scheduler.utils [None req-76171325-c9ab-47e7-a727-28775f4d583d 2dbb72a92771408495deac425dfdfb0f 73f5637f0c8e44a5a441383940f5e993 - - default default] [instance: ec495df2-8c90-42c3-9251-2bfc0e63f83c] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:58:55.402 8 WARNING oslo_config.cfg [None req-986ee098-e6c6-4ded-9373-81a41f10e821 5e034f681e96436db2166a78156b31e6 3817eb1ff25847d692da0d63c71ed0a8 - - default default] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:58:55.436 7 WARNING oslo_config.cfg [None req-76171325-c9ab-47e7-a727-28775f4d583d 2dbb72a92771408495deac425dfdfb0f 73f5637f0c8e44a5a441383940f5e993 - - default default] Deprecated: Option "api_servers" from group "glance" is deprecated for removal (
Support for image service configuration via standard keystoneauth1 Adapter
options was added in the 17.0.0 Queens release. The api_servers option was
retained temporarily to allow consumers time to cut over to a real load
balancing solution.
).  Its value may be silently ignored in the future.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager [None req-18e8351f-e16e-480a-b2b8-375d39afa3bc 5bcc08081b2e46d89e3e08c5a002162f 48993ecc8a69447587b9fa62436bd017 - - 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.
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     raise result
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager 
2026-02-25 20:59:11.322 8 ERROR nova.conductor.manager 
2026-02-25 20:59:11.439 8 WARNING nova.scheduler.utils [None req-18e8351f-e16e-480a-b2b8-375d39afa3bc 5bcc08081b2e46d89e3e08c5a002162f 48993ecc8a69447587b9fa62436bd017 - - 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. 
2026-02-25 20:59:11.440 8 WARNING nova.scheduler.utils [None req-18e8351f-e16e-480a-b2b8-375d39afa3bc 5bcc08081b2e46d89e3e08c5a002162f 48993ecc8a69447587b9fa62436bd017 - - default default] [instance: 5c8c3068-0a24-4753-8757-a5f2f4f1dfc4] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager [None req-375cced8-f975-4392-819f-5f5d50e6e419 5cca0ea67d744c4f833889c87619d1b4 b6e5c09f049d4564a97083d4959bfdbf - - 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.
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     raise result
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager 
2026-02-25 20:59:23.260 7 ERROR nova.conductor.manager 
2026-02-25 20:59:23.382 7 WARNING nova.scheduler.utils [None req-375cced8-f975-4392-819f-5f5d50e6e419 5cca0ea67d744c4f833889c87619d1b4 b6e5c09f049d4564a97083d4959bfdbf - - 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. 
2026-02-25 20:59:23.383 7 WARNING nova.scheduler.utils [None req-375cced8-f975-4392-819f-5f5d50e6e419 5cca0ea67d744c4f833889c87619d1b4 b6e5c09f049d4564a97083d4959bfdbf - - default default] [instance: a10226b3-b28e-40d4-9f2d-afdd15ac389d] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager [None req-71af67e1-69f2-4a1a-901a-4cfccdef179d 35dde9ccb7e3438bb2412074c032ef7f 7cb1fd903a354826853cf5ba84474046 - - 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.
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     raise result
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager 
2026-02-25 20:59:23.797 8 ERROR nova.conductor.manager 
2026-02-25 20:59:23.876 8 WARNING nova.scheduler.utils [None req-71af67e1-69f2-4a1a-901a-4cfccdef179d 35dde9ccb7e3438bb2412074c032ef7f 7cb1fd903a354826853cf5ba84474046 - - 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. 
2026-02-25 20:59:23.877 8 WARNING nova.scheduler.utils [None req-71af67e1-69f2-4a1a-901a-4cfccdef179d 35dde9ccb7e3438bb2412074c032ef7f 7cb1fd903a354826853cf5ba84474046 - - default default] [instance: d86fd427-bd16-4304-a50d-643e8bbfa177] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager [None req-cdcf9700-f9db-4d98-9bb9-dbac37602e76 7baaba624aa54ede9096bbf1be157b3c 8186cab60340469482556bab76cb23a7 - - 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.
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     raise result
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager 
2026-02-25 20:59:41.405 7 ERROR nova.conductor.manager 
2026-02-25 20:59:41.478 7 WARNING nova.scheduler.utils [None req-cdcf9700-f9db-4d98-9bb9-dbac37602e76 7baaba624aa54ede9096bbf1be157b3c 8186cab60340469482556bab76cb23a7 - - 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. 
2026-02-25 20:59:41.479 7 WARNING nova.scheduler.utils [None req-cdcf9700-f9db-4d98-9bb9-dbac37602e76 7baaba624aa54ede9096bbf1be157b3c 8186cab60340469482556bab76cb23a7 - - default default] [instance: 939e09e1-1728-4c8b-bb12-e3ae004940f7] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager [None req-6cb03365-1c7e-430b-b0c5-0ee9a4814182 de465046b8204a72a90bc015cb758650 087690eab44d4e9383cfb66399f29bd9 - - 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.
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     raise result
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager 
2026-02-25 21:00:50.291 8 ERROR nova.conductor.manager 
2026-02-25 21:00:50.394 8 WARNING nova.scheduler.utils [None req-6cb03365-1c7e-430b-b0c5-0ee9a4814182 de465046b8204a72a90bc015cb758650 087690eab44d4e9383cfb66399f29bd9 - - 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. 
2026-02-25 21:00:50.396 8 WARNING nova.scheduler.utils [None req-6cb03365-1c7e-430b-b0c5-0ee9a4814182 de465046b8204a72a90bc015cb758650 087690eab44d4e9383cfb66399f29bd9 - - default default] [instance: 0a5bc226-d608-4aff-8ca4-5cfb89843a5b] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager [None req-268d9e8b-bded-405c-a655-a07f3e1cbced 7e8b1f32f5d84dfa9b1a445522f23aad 0518b5362e534ddab742419fce130555 - - 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.
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     raise result
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager 
2026-02-25 21:01:39.453 7 ERROR nova.conductor.manager 
2026-02-25 21:01:39.558 7 WARNING nova.scheduler.utils [None req-268d9e8b-bded-405c-a655-a07f3e1cbced 7e8b1f32f5d84dfa9b1a445522f23aad 0518b5362e534ddab742419fce130555 - - 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. 
2026-02-25 21:01:39.559 7 WARNING nova.scheduler.utils [None req-268d9e8b-bded-405c-a655-a07f3e1cbced 7e8b1f32f5d84dfa9b1a445522f23aad 0518b5362e534ddab742419fce130555 - - default default] [instance: 127a0e62-e9fe-4af5-97c5-9a57779571e2] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager [None req-a7924e6d-c659-4d0a-a401-13bb948ca902 adf0013c58ce417d8e0434612602c0f1 76a9cd49ef0e4761ae6f7683d10b4e88 - - 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.
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     raise result
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager 
2026-02-25 21:01:40.557 8 ERROR nova.conductor.manager 
2026-02-25 21:01:40.651 8 WARNING nova.scheduler.utils [None req-a7924e6d-c659-4d0a-a401-13bb948ca902 adf0013c58ce417d8e0434612602c0f1 76a9cd49ef0e4761ae6f7683d10b4e88 - - 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. 
2026-02-25 21:01:40.652 8 WARNING nova.scheduler.utils [None req-a7924e6d-c659-4d0a-a401-13bb948ca902 adf0013c58ce417d8e0434612602c0f1 76a9cd49ef0e4761ae6f7683d10b4e88 - - default default] [instance: ad5296ff-7ea4-43bf-9cfe-87ef08546ebe] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager [None req-2a6b277b-2838-4f0b-a874-f20156f6a8bf 57442c02d2184c349df56f916f715ae1 7dfec28d3d81485889afc3aa9319324b - - 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.
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 1654, in schedule_and_build_instances
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     raise result
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager 
2026-02-25 21:01:57.095 7 ERROR nova.conductor.manager 
2026-02-25 21:01:57.174 7 WARNING nova.scheduler.utils [None req-2a6b277b-2838-4f0b-a874-f20156f6a8bf 57442c02d2184c349df56f916f715ae1 7dfec28d3d81485889afc3aa9319324b - - 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. 
2026-02-25 21:01:57.175 7 WARNING nova.scheduler.utils [None req-2a6b277b-2838-4f0b-a874-f20156f6a8bf 57442c02d2184c349df56f916f715ae1 7dfec28d3d81485889afc3aa9319324b - - default default] [instance: cec9f8c5-b3b4-42b2-be7b-6ef46b0e5f87] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.