+ exec nova-scheduler --config-file /etc/nova/nova.conf
Service is starting with native threading. This is currently experimental. Do not use it in production without first testing it in pre-production.
2026-07-28 14:59:14.235 1 INFO nova.utils [None req-eee6fe31-1fc9-429c-bc7a-73718ede6e00 - - - - - -] The default thread pool MainProcess.default is initialized
2026-07-28 14:59:14.654 1 INFO nova.utils [None req-eee6fe31-1fc9-429c-bc7a-73718ede6e00 - - - - - -] The cell worker thread pool MainProcess.cell_worker is initialized
2026-07-28 14:59:14.681 1 INFO nova.utils [None req-696253df-0f4c-4901-9638-896cb2b3b2e6 - - - - - -] The cell worker thread pool MainProcess.cell_worker is shutting down
2026-07-28 14:59:15.682 1 INFO nova.utils [None req-696253df-0f4c-4901-9638-896cb2b3b2e6 - - - - - -] The cell worker thread pool MainProcess.cell_worker is closed
2026-07-28 14:59:15.683 1 INFO nova.utils [None req-696253df-0f4c-4901-9638-896cb2b3b2e6 - - - - - -] The default thread pool MainProcess.default is shutting down
2026-07-28 14:59:16.348 1 INFO nova.utils [None req-696253df-0f4c-4901-9638-896cb2b3b2e6 - - - - - -] The default thread pool MainProcess.default is closed
2026-07-28 14:59:16.358 1 WARNING oslo_config.cfg [None req-696253df-0f4c-4901-9638-896cb2b3b2e6 - - - - - -] 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.
2026-07-28 14:59:16.406 11 INFO nova.service [-] Starting scheduler node (version 32.1.0)
2026-07-28 14:59:16.417 13 INFO nova.service [-] Starting scheduler node (version 32.1.0)
2026-07-28 15:08:54.151 11 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 12.56 sec
2026-07-28 15:08:54.152 13 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 12.55 sec
2026-07-28 15:09:18.994 11 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 4.85 sec
2026-07-28 15:09:18.994 13 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 4.84 sec
2026-07-28 15:09:29.735 13 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 0.74 sec
2026-07-28 15:09:29.735 11 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 0.74 sec
2026-07-28 15:09:33.934 13 INFO nova.scheduler.manager [None req-379c2f3e-6e99-4561-acda-139f9fb79a6b - - - - - -] Discovered 1 new hosts: cell1:instance
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task [None req-7b4f8e53-d566-45a5-9907-3b72a7e40952 - - - - - -] Error during SchedulerManager._discover_hosts_in_cells: IndexError: list index out of range
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task Traceback (most recent call last):
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_service/periodic_task.py", line 216, in run_periodic_tasks
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task     task(self, context)
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 114, in _discover_hosts_in_cells
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task     leader = sorted(
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task              ^^^^^^^
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task IndexError: list index out of range
2026-07-28 15:10:36.617 11 ERROR oslo_service.periodic_task 
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task [None req-ce170a8b-d149-4469-a448-2e80af32c2fa - - - - - -] Error during SchedulerManager._discover_hosts_in_cells: oslo_db.exception.DBConnectionError: (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query')
(Background on this error at: https://sqlalche.me/e/20/e3q8)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task Traceback (most recent call last):
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 143, in __init__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self._dbapi_connection = engine.raw_connection()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                              ^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 3301, in raw_connection
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return self.pool.connect()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 447, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return _ConnectionFairy._checkout(self)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 1264, in _checkout
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     fairy = _ConnectionRecord.checkout(pool)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 716, in checkout
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     with util.safe_reraise():
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise exc_value.with_traceback(exc_tb)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 714, in checkout
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     dbapi_connection = rec.get_connection()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                        ^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 865, in get_connection
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self.__connect()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 899, in __connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     with util.safe_reraise():
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise exc_value.with_traceback(exc_tb)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 895, in __connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self.dbapi_connection = connection = pool._invoke_creator(self)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/create.py", line 661, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return dialect.connect(*cargs, **cparams)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/default.py", line 629, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return self.loaded_dbapi.connect(*cargs, **cparams)  # type: ignore[no-any-return]  # NOQA: E501
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 365, in __init__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self.connect()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 680, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self._get_server_information()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 1099, in _get_server_information
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     packet = self._read_packet()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task              ^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 751, in _read_packet
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     packet_header = self._read_bytes(4)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                     ^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 805, in _read_bytes
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise err.OperationalError(
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task pymysql.err.OperationalError: (2013, 'Lost connection to MySQL server during query')
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task 
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task The above exception was the direct cause of the following exception:
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task 
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task Traceback (most recent call last):
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_service/periodic_task.py", line 216, in run_periodic_tasks
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     task(self, context)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/scheduler/manager.py", line 126, in _discover_hosts_in_cells
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     host_mappings = host_mapping_obj.discover_hosts(context)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/objects/host_mapping.py", line 284, in discover_hosts
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     added_hm = _check_and_create_host_mappings(cctxt, cm, status_fn,
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/objects/host_mapping.py", line 246, in _check_and_create_host_mappings
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     compute_nodes = objects.ComputeNodeList.get_all_by_not_mapped(
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/oslo_versionedobjects/base.py", line 184, in wrapper
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     result = fn(cls, context, *args, **kwargs)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/objects/compute_node.py", line 450, in get_all_by_not_mapped
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     db_computes = db.compute_node_get_all_mapped_less_than(
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/db/main/api.py", line 224, in wrapper
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return f(context, *args, **kwargs)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/db/main/api.py", line 760, in compute_node_get_all_mapped_less_than
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return _compute_node_fetchall(context,
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/nova/db/main/api.py", line 623, in _compute_node_fetchall
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     with engine.connect() as conn, conn.begin():
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task          ^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 3277, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return self._connection_cls(self)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 145, in __init__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     Connection._handle_dbapi_exception_noconnection(
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 2437, in _handle_dbapi_exception_noconnection
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise newraise.with_traceback(exc_info[2]) from e
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 143, in __init__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self._dbapi_connection = engine.raw_connection()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                              ^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/base.py", line 3301, in raw_connection
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return self.pool.connect()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 447, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return _ConnectionFairy._checkout(self)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 1264, in _checkout
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     fairy = _ConnectionRecord.checkout(pool)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 716, in checkout
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     with util.safe_reraise():
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise exc_value.with_traceback(exc_tb)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 714, in checkout
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     dbapi_connection = rec.get_connection()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                        ^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 865, in get_connection
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self.__connect()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 899, in __connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     with util.safe_reraise():
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise exc_value.with_traceback(exc_tb)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/pool/base.py", line 895, in __connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self.dbapi_connection = connection = pool._invoke_creator(self)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/create.py", line 661, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return dialect.connect(*cargs, **cparams)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/sqlalchemy/engine/default.py", line 629, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     return self.loaded_dbapi.connect(*cargs, **cparams)  # type: ignore[no-any-return]  # NOQA: E501
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 365, in __init__
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self.connect()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 680, in connect
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     self._get_server_information()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 1099, in _get_server_information
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     packet = self._read_packet()
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task              ^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 751, in _read_packet
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     packet_header = self._read_bytes(4)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task                     ^^^^^^^^^^^^^^^^^^^
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task   File "/var/lib/openstack/lib/python3.12/site-packages/pymysql/connections.py", line 805, in _read_bytes
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task     raise err.OperationalError(
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task oslo_db.exception.DBConnectionError: (pymysql.err.OperationalError) (2013, 'Lost connection to MySQL server during query')
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task (Background on this error at: https://sqlalche.me/e/20/e3q8)
2026-07-28 15:10:40.358 13 ERROR oslo_service.periodic_task 
2026-07-28 15:10:45.227 11 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 55.49 sec
2026-07-28 15:10:45.512 13 WARNING oslo.service.backend._common.loopingcall [-] Function 'nova.servicegroup.drivers.db.DbDriver._report_state' run outlasted interval by 55.78 sec
2026-07-28 15:11:29.749 13 INFO nova.scheduler.host_manager [None req-8ae5df84-18ee-4804-a700-e9e757c2df04 - - - - - -] Received a sync request from an unknown host 'instance'. Re-created its InstanceList.
2026-07-28 15:11:29.759 11 INFO nova.scheduler.host_manager [None req-8ae5df84-18ee-4804-a700-e9e757c2df04 - - - - - -] Received a sync request from an unknown host 'instance'. Re-created its InstanceList.