详细错误：
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/opt/maxkb-app/main.py", line 39, in perform_db_migrate
management.call_command('migrate')
File "/opt/py3/lib/python3.11/site-packages/django/core/management/__init__.py", line 194, in call_command
return command.execute(*args, **defaults)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/core/management/base.py", line 460, in execute
output = self.handle(*args, **options)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/core/management/base.py", line 107, in wrapper
res = handle_func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/core/management/commands/migrate.py", line 114, in handle
executor = MigrationExecutor(connection, self.migration_progress_callback)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/migrations/executor.py", line 18, in __init__
self.loader = MigrationLoader(self.connection)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/migrations/loader.py", line 58, in __init__
self.build_graph()
File "/opt/py3/lib/python3.11/site-packages/django/db/migrations/loader.py", line 235, in build_graph
self.applied_migrations = recorder.applied_migrations()
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/migrations/recorder.py", line 89, in applied_migrations
if self.has_table():
^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/migrations/recorder.py", line 63, in has_table
with self.connection.cursor() as cursor:
^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/backends/base/base.py", line 320, in cursor
return self._cursor()
^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/backends/base/base.py", line 296, in _cursor
self.ensure_connection()
File "/opt/py3/lib/python3.11/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/backends/base/base.py", line 278, in ensure_connection
with self.wrap_database_errors:
File "/opt/py3/lib/python3.11/site-packages/django/db/utils.py", line 91, in __exit__
raise dj_exc_value.with_traceback(traceback) from exc_value
File "/opt/py3/lib/python3.11/site-packages/django/db/backends/base/base.py", line 279, in ensure_connection
self.connect()
File "/opt/py3/lib/python3.11/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/backends/base/base.py", line 256, in connect
self.connection = self.get_new_connection(conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/dj_db_conn_pool/backends/postgresql/mixins.py", line 18, in get_new_connection
connection = super().get_new_connection(conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/dj_db_conn_pool/core/mixins/core.py", line 106, in get_new_connection
conn = db_pool.connect()
^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 447, in connect
return _ConnectionFairy._checkout(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 1264, in _checkout
fairy = _ConnectionRecord.checkout(pool)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 711, in checkout
rec = pool._do_get()
^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/impl.py", line 177, in _do_get
with util.safe_reraise():
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
raise exc_value.with_traceback(exc_tb)
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/impl.py", line 175, in _do_get
return self._create_connection()
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 388, in _create_connection
return _ConnectionRecord(self)
^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 673, in __init__
self.__connect()
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 899, in __connect
with util.safe_reraise():
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/util/langhelpers.py", line 224, in __exit__
raise exc_value.with_traceback(exc_tb)
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 895, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/sqlalchemy/pool/base.py", line 360, in <lambda>
return lambda rec: creator_fn()
^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/dj_db_conn_pool/core/mixins/core.py", line 90, in <lambda>
lambda: self._get_new_connection(conn_params),
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/dj_db_conn_pool/core/mixins/core.py", line 45, in _get_new_connection
return super().get_new_connection(conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/utils/asyncio.py", line 26, in inner
return func(*args, **kwargs)
^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/django/db/backends/postgresql/base.py", line 332, in get_new_connection
connection = self.Database.connect(**conn_params)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/psycopg/connection.py", line 96, in connect
attempts = conninfo_attempts(params)
^^^^^^^^^^^^^^^^^^^^^^^^^
File "/opt/py3/lib/python3.11/site-packages/psycopg/_conninfo_attempts.py", line 53, in conninfo_attempts
raise e.OperationalError(str(last_exc))
django.db.utils.OperationalError: [Errno -2] Name or service not known