+ exec nova-conductor --config-file /etc/nova/nova.conf
2026-05-28 02:41:27.839 1 INFO nova.utils [None req-b3ef64e4-dd85-4470-b57d-b7b8f2723a4d - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-05-28 02:41:27.929 1 INFO oslo_service.backend._eventlet.service [None req-b3ef64e4-dd85-4470-b57d-b7b8f2723a4d - - - - - -] Starting 2 workers
2026-05-28 02:41:27.937 7 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-05-28 02:41:27.937 8 INFO nova.service [-] Starting conductor node (version 32.1.0)
2026-05-28 02:41:27.939 1 WARNING oslo_config.cfg [None req-b3ef64e4-dd85-4470-b57d-b7b8f2723a4d - - - - - -] 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.
2026-05-28 02:59:05.002 7 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 1.84 sec
2026-05-28 02:59:05.003 8 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 1.80 sec
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager [None req-51b6f8e8-e10d-49c7-a270-425c36abaffb a74ca2be360c444890eb1db375775480 dbbae05e2816470aabe18a21df1606da - - 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.
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:29.105 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
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     raise result
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager 
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager 
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager 
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager 
2026-05-28 03:21:29.105 7 ERROR nova.conductor.manager 
2026-05-28 03:21:29.313 7 WARNING nova.scheduler.utils [None req-51b6f8e8-e10d-49c7-a270-425c36abaffb a74ca2be360c444890eb1db375775480 dbbae05e2816470aabe18a21df1606da - - 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. 
2026-05-28 03:21:29.315 7 WARNING nova.scheduler.utils [None req-51b6f8e8-e10d-49c7-a270-425c36abaffb a74ca2be360c444890eb1db375775480 dbbae05e2816470aabe18a21df1606da - - default default] [instance: c57cbeb2-d335-496a-aec7-1fea257ffcdb] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:29.368 7 WARNING oslo_config.cfg [None req-51b6f8e8-e10d-49c7-a270-425c36abaffb a74ca2be360c444890eb1db375775480 dbbae05e2816470aabe18a21df1606da - - 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. 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager [None req-bed05ad9-8b1c-484a-b423-2688825f7bbe fba27c16b8934c48a38fb995713cab2b fa93058550604b93aec949e5f3f26106 - - 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.
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:29.473 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
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     raise result
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager 
2026-05-28 03:21:29.473 8 ERROR nova.conductor.manager 
2026-05-28 03:21:29.648 8 WARNING nova.scheduler.utils [None req-bed05ad9-8b1c-484a-b423-2688825f7bbe fba27c16b8934c48a38fb995713cab2b fa93058550604b93aec949e5f3f26106 - - 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. 
2026-05-28 03:21:29.649 8 WARNING nova.scheduler.utils [None req-bed05ad9-8b1c-484a-b423-2688825f7bbe fba27c16b8934c48a38fb995713cab2b fa93058550604b93aec949e5f3f26106 - - default default] [instance: eb7a199d-d093-4f20-9c5c-97b0fd6e7812] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:29.690 8 WARNING oslo_config.cfg [None req-bed05ad9-8b1c-484a-b423-2688825f7bbe fba27c16b8934c48a38fb995713cab2b fa93058550604b93aec949e5f3f26106 - - 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. 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager [None req-93664245-2e75-4a4a-8f03-fab21ff51dd3 6387c84f722442cb963a95dddc3c961f 45c97812a5614774a6de4ed640ac715a - - 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.
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:46.337 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
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     raise result
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager 
2026-05-28 03:21:46.337 7 ERROR nova.conductor.manager 
2026-05-28 03:21:46.419 7 WARNING nova.scheduler.utils [None req-93664245-2e75-4a4a-8f03-fab21ff51dd3 6387c84f722442cb963a95dddc3c961f 45c97812a5614774a6de4ed640ac715a - - 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. 
2026-05-28 03:21:46.420 7 WARNING nova.scheduler.utils [None req-93664245-2e75-4a4a-8f03-fab21ff51dd3 6387c84f722442cb963a95dddc3c961f 45c97812a5614774a6de4ed640ac715a - - default default] [instance: 4d723596-89b4-4390-ad02-ec92db69b6fe] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager [None req-63a10b64-3bfe-4381-bc0c-cd79a278858c de8dbcbb067e41b6974e77432c125976 8db80f07ec27428ba17081ddf3c1e29b - - 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.
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:49.622 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
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     raise result
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager 
2026-05-28 03:21:49.622 8 ERROR nova.conductor.manager 
2026-05-28 03:21:49.706 8 WARNING nova.scheduler.utils [None req-63a10b64-3bfe-4381-bc0c-cd79a278858c de8dbcbb067e41b6974e77432c125976 8db80f07ec27428ba17081ddf3c1e29b - - 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. 
2026-05-28 03:21:49.706 8 WARNING nova.scheduler.utils [None req-63a10b64-3bfe-4381-bc0c-cd79a278858c de8dbcbb067e41b6974e77432c125976 8db80f07ec27428ba17081ddf3c1e29b - - default default] [instance: baa6dac0-5b39-4b99-b5f4-d4877977b3a0] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager [None req-a1bd5af2-97b0-48cf-9f9b-8092b6281f66 7eb02c9e98584583930d3e450feaf39a 0a613eef6d454a7e966c8d98c95e1062 - - 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.
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:22:03.495 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
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     raise result
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager 
2026-05-28 03:22:03.495 7 ERROR nova.conductor.manager 
2026-05-28 03:22:03.578 7 WARNING nova.scheduler.utils [None req-a1bd5af2-97b0-48cf-9f9b-8092b6281f66 7eb02c9e98584583930d3e450feaf39a 0a613eef6d454a7e966c8d98c95e1062 - - 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. 
2026-05-28 03:22:03.579 7 WARNING nova.scheduler.utils [None req-a1bd5af2-97b0-48cf-9f9b-8092b6281f66 7eb02c9e98584583930d3e450feaf39a 0a613eef6d454a7e966c8d98c95e1062 - - default default] [instance: 5bfa7bae-ecd0-4202-953f-95cc4ef20769] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager [None req-79037ee3-b264-4acf-a1d0-d30846050ddd b4b6738bf95e412fa01b6fddcfcdfd87 21c7f50db2734c40b22b8b798361608d - - 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.
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:22:09.553 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
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     raise result
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager 
2026-05-28 03:22:09.553 8 ERROR nova.conductor.manager 
2026-05-28 03:22:09.635 8 WARNING nova.scheduler.utils [None req-79037ee3-b264-4acf-a1d0-d30846050ddd b4b6738bf95e412fa01b6fddcfcdfd87 21c7f50db2734c40b22b8b798361608d - - 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. 
2026-05-28 03:22:09.636 8 WARNING nova.scheduler.utils [None req-79037ee3-b264-4acf-a1d0-d30846050ddd b4b6738bf95e412fa01b6fddcfcdfd87 21c7f50db2734c40b22b8b798361608d - - default default] [instance: d74a7705-6df1-410d-a496-b4bc0439c361] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager [None req-f08780d7-f9a3-4316-8a24-a7f085b2f087 b266563e8f3449158d42238abd65957c 58eeacad587a4881bfd7ae1a9de49e53 - - 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.
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:23:34.695 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
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     raise result
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager 
2026-05-28 03:23:34.695 7 ERROR nova.conductor.manager 
2026-05-28 03:23:34.839 7 WARNING nova.scheduler.utils [None req-f08780d7-f9a3-4316-8a24-a7f085b2f087 b266563e8f3449158d42238abd65957c 58eeacad587a4881bfd7ae1a9de49e53 - - 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. 
2026-05-28 03:23:34.840 7 WARNING nova.scheduler.utils [None req-f08780d7-f9a3-4316-8a24-a7f085b2f087 b266563e8f3449158d42238abd65957c 58eeacad587a4881bfd7ae1a9de49e53 - - default default] [instance: 44c78af5-27d6-4cfe-a867-93504bbf3867] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager [None req-e817db6d-b3a9-4021-8580-2206756f7db5 4665e23023d1468d9d1fdd2e2990017b ee61cebbbe144b329ec5013fb3729d73 - - 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.
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:24:00.581 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
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     raise result
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager 
2026-05-28 03:24:00.581 8 ERROR nova.conductor.manager 
2026-05-28 03:24:00.665 8 WARNING nova.scheduler.utils [None req-e817db6d-b3a9-4021-8580-2206756f7db5 4665e23023d1468d9d1fdd2e2990017b ee61cebbbe144b329ec5013fb3729d73 - - 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. 
2026-05-28 03:24:00.666 8 WARNING nova.scheduler.utils [None req-e817db6d-b3a9-4021-8580-2206756f7db5 4665e23023d1468d9d1fdd2e2990017b ee61cebbbe144b329ec5013fb3729d73 - - default default] [instance: a8d8ef03-eb5d-4377-84ee-1eeea72c8c3b] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager [None req-04017cfc-41e0-4d13-8c41-a667ba041da2 d1d03cb929554e45b270b09ebb1b684f c08649c6ef654db28697473a97b4639b - - 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.
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:24:28.054 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
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     raise result
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager 
2026-05-28 03:24:28.054 7 ERROR nova.conductor.manager 
2026-05-28 03:24:28.151 7 WARNING nova.scheduler.utils [None req-04017cfc-41e0-4d13-8c41-a667ba041da2 d1d03cb929554e45b270b09ebb1b684f c08649c6ef654db28697473a97b4639b - - 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. 
2026-05-28 03:24:28.152 7 WARNING nova.scheduler.utils [None req-04017cfc-41e0-4d13-8c41-a667ba041da2 d1d03cb929554e45b270b09ebb1b684f c08649c6ef654db28697473a97b4639b - - default default] [instance: e2ec0aa1-38d6-4268-8f24-26d7168ce155] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager [None req-bdf99b4c-f18f-4fa9-a666-72c7b8b67e9f 75e4e9d2a7f84ec6afb074385735b706 6620a2cb13944c22b7516a8b15b95cde - - 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.
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:24:42.924 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
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     host_lists = self._schedule_instances(context, request_specs[0],
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/conductor/manager.py", line 942, in _schedule_instances
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     host_lists = self.query_client.select_destinations(
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/client/query.py", line 41, in select_destinations
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     return self.scheduler_rpcapi.select_destinations(context, spec_obj,
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/rpcapi.py", line 160, in select_destinations
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     return cctxt.call(ctxt, 'select_destinations', **msg_args)
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/client.py", line 180, in call
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     result = self.transport._send(
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager              ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/transport.py", line 123, in _send
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     return self._driver.send(target, ctxt, message,
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 800, in send
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     return self._send(target, ctxt, message, wait_for_reply, timeout,
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/_drivers/amqpdriver.py", line 792, in _send
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     raise result
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager nova.exception_Remote.NoValidHost_Remote: No valid host was found. 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager Traceback (most recent call last):
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_messaging/rpc/server.py", line 269, in inner
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     return func(*args, **kwargs)
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager            ^^^^^^^^^^^^^^^^^^^^^
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 255, in select_destinations
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager     raise exception.NoValidHost(reason="")
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager nova.exception.NoValidHost: No valid host was found. 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager 
2026-05-28 03:24:42.924 8 ERROR nova.conductor.manager 
2026-05-28 03:24:46.334 8 WARNING nova.scheduler.utils [None req-bdf99b4c-f18f-4fa9-a666-72c7b8b67e9f 75e4e9d2a7f84ec6afb074385735b706 6620a2cb13944c22b7516a8b15b95cde - - 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. 
2026-05-28 03:24:46.335 8 WARNING nova.scheduler.utils [None req-bdf99b4c-f18f-4fa9-a666-72c7b8b67e9f 75e4e9d2a7f84ec6afb074385735b706 6620a2cb13944c22b7516a8b15b95cde - - default default] [instance: 8d13dd44-335c-4a8b-99b0-314297e292c8] Setting instance to ERROR state.: nova.exception_Remote.NoValidHost_Remote: No valid host was found.