raphaelauv opened a new issue, #71664:
URL: https://github.com/apache/airflow/issues/71664
### Under which category would you file this issue?
Airflow Core
### Apache Airflow version
3.2.1
### What happened and how to reproduce it?
when using a custom `airflowLocalSettings` ( airflow_local_settings.py ) in
the helm chart
```yaml
AIRFLOW__DATABASE__SQL_ALCHEMY_CONN :
postgresql://airflow_iam_user:@XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.rds.amazonaws.com:5432/airflow_db?sslmode=require
```
```yaml
airflowLocalSettings: |-
from sqlalchemy import create_engine, event
import boto3
def generate_rds_token(host, port, user, region):
client = boto3.client('rds', region_name=region)
return client.generate_db_auth_token(
DBHostname=host,
Port=port,
DBUsername=user,
Region=region
)
def create_metadata_engine(sql_alchemy_conn, *, engine_args, connect_args):
connect_args["sslmode"]="require"
engine = create_engine(
sql_alchemy_conn,
connect_args=connect_args,
**engine_args,
future=True,
)
@event.listens_for(engine, "do_connect")
def provide_token(dialect, conn_rec, cargs, cparams):
print("SYNC TOKEN RDS")
token = generate_rds_token(
user=cparams["user"],
host=cparams["host"],
port=cparams["port"],
region=cparams["host"].split(".")[2])
cparams["password"] = token
return engine
```
the `apiServer` fail to start but the `migrateDatabaseJob` run successfully
````log
____________ _____________
____ |__( )_________ __/__ /________ __
____ /| |_ /__ ___/_ /_ __ /_ __ \_ | /| / /
___ ___ | / _ / _ __/ _ / / /_/ /_ |/ |/ /
_/_/ |_/_/ /_/ /_/ /_/ \____/____/|__/
Running the API server with uvicorn:
Apps: all
Workers: 1
Host: 0.0.0.0:8080
Timeout: 120
Logfiles: -
=================================================================
2026-08-15T23:04:01.809867Z [warning ] starlette.middleware.wsgi is
deprecated and will be removed in a future release. Please refer to
https://github.com/abersheeran/a2wsgi as a replacement. [py.warnings]
category=StarletteDeprecationWarning
filename=/home/airflow/.local/lib/python3.14/site-packages/fastapi/middleware/wsgi.py
lineno=1
2026-08-15T23:04:03.050834Z [warning ] 'return' in a 'finally' block
[py.warnings] category=SyntaxWarning
filename=/home/airflow/.local/lib/python3.14/site-packages/flask_appbuilder/baseviews.py
lineno=1258
2026-08-15T23:04:03.051039Z [warning ] 'return' in a 'finally' block
[py.warnings] category=SyntaxWarning
filename=/home/airflow/.local/lib/python3.14/site-packages/flask_appbuilder/baseviews.py
lineno=1305
2026-08-15T23:04:04.005226Z [warning ] Using the in-memory storage for
tracking rate limits as no storage was explicitly specified. This is not
recommended for production use. See:
https://flask-limiter.readthedocs.io#configuring-a-storage-backend for
documentation about configuring the storage backend. [py.warnings]
category=UserWarning
filename=/home/airflow/.local/lib/python3.14/site-packages/flask_limiter/_extension.py
lineno=364
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 144, in __init__
self._dbapi_connection = engine.raw_connection()
~~~~~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 3319, in raw_connection
return self.pool.connect()
~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 448, in connect
return _ConnectionFairy._checkout(self)
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 1272, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 712, in checkout
rec = pool._do_get()
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/impl.py",
line 178, in _do_get
with util.safe_reraise():
~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/util/langhelpers.py",
line 122, in __exit__
raise exc_value.with_traceback(exc_tb)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/impl.py",
line 176, in _do_get
return self._create_connection()
~~~~~~~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 389, in _create_connection
return _ConnectionRecord(self)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 674, in __init__
self.__connect()
~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 900, in __connect
with util.safe_reraise():
~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/util/langhelpers.py",
line 122, in __exit__
raise exc_value.with_traceback(exc_tb)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 896, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
~~~~~~~~~~~~~~~~~~~~^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/create.py",
line 667, in connect
return dialect.connect(*cargs_tup, **cparams)
~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/default.py",
line 630, in connect
return self.loaded_dbapi.connect(*cargs, **cparams) # type:
ignore[no-any-return] # NOQA: E501
~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/psycopg2/__init__.py", line
122, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: connection to server at
"XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.rds.amazonaws.com" (YYY.YY.YY.YYY), port
5432 failed: fe_sendauth: no password supplied
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/home/airflow/.local/bin/airflow", line 6, in <module>
sys.exit(main())
~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/__main__.py", line
61, in main
args.func(args)
~~~~~~~~~^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/cli_config.py",
line 49, in command
return func(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/utils/cli.py", line
113, in wrapper
return f(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/utils/providers_configuration_loader.py",
line 54, in wrapped_function
return func(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/commands/api_server_command.py",
line 205, in wrapper
return func(args)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/commands/api_server_command.py",
line 249, in api_server
run_command_with_daemon_option(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
args=args,
^^^^^^^^^^
...<7 lines>...
),
^^
)
^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/commands/daemon_utils.py",
line 82, in run_command_with_daemon_option
callback()
~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/commands/api_server_command.py",
line 252, in <lambda>
callback=lambda: _run_api_server(
~~~~~~~~~~~~~~~^
args=args,
^^^^^^^^^^
...<3 lines>...
proxy_headers=proxy_headers,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
),
^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/utils/memray_utils.py",
line 61, in wrapper
return func(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/commands/api_server_command.py",
line 186, in _run_api_server
run(
~~~^
args=args,
^^^^^^^^^^
...<3 lines>...
proxy_headers=proxy_headers,
^^^^^^^^^^^^^^^^^^^^^^^^^^^^
)
^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/cli/commands/api_server_command.py",
line 138, in _run_api_server_with_uvicorn
uvicorn.run(
~~~~~~~~~~~^
"airflow.api_fastapi.main:app",
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
**uvicorn_kwargs,
^^^^^^^^^^^^^^^^^
)
^
File "/home/airflow/.local/lib/python3.14/site-packages/uvicorn/main.py",
line 609, in run
config.load_app()
~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/uvicorn/config.py", line
428, in load_app
return import_from_string(self.app)
File
"/home/airflow/.local/lib/python3.14/site-packages/uvicorn/importer.py", line
19, in import_from_string
module = importlib.import_module(module_str)
File "/usr/python/lib/python3.14/importlib/__init__.py", line 88, in
import_module
return _bootstrap._gcd_import(name[level:], package, level)
~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File "<frozen importlib._bootstrap>", line 1398, in _gcd_import
File "<frozen importlib._bootstrap>", line 1371, in _find_and_load
File "<frozen importlib._bootstrap>", line 1342, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 938, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 759, in exec_module
File "<frozen importlib._bootstrap>", line 491, in
_call_with_frames_removed
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/api_fastapi/main.py",
line 46, in <module>
app = cached_app(apps=os.environ.get("AIRFLOW_API_APPS", "all"))
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/api_fastapi/app.py",
line 162, in cached_app
return create_app(apps=apps)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/utils/providers_configuration_loader.py",
line 54, in wrapped_function
return func(*args, **kwargs)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/api_fastapi/app.py",
line 148, in create_app
init_auth_manager(app)
~~~~~~~~~~~~~~~~~^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/api_fastapi/app.py",
line 205, in init_auth_manager
if app and (auth_manager_fastapi_app := am.get_fastapi_app()):
~~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/providers/fab/auth_manager/fab_auth_manager.py",
line 223, in get_fastapi_app
flask_app = create_app(enable_plugins=False)
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/providers/fab/www/app.py",
line 130, in create_app
init_airflow_session_interface(flask_app, db)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/providers/fab/www/extensions/init_session.py",
line 48, in init_airflow_session_interface
app.session_interface = AirflowDatabaseSessionInterface(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
app=app,
^^^^^^^^
...<7 lines>...
use_signer=True,
^^^^^^^^^^^^^^^^
)
^
File
"/home/airflow/.local/lib/python3.14/site-packages/airflow/providers/fab/www/session.py",
line 62, in __init__
super().__init__(*args, **kwargs)
~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/flask_session/sqlalchemy/sqlalchemy.py",
line 112, in __init__
self.sql_session_model.__table__.create(bind=engine, checkfirst=True)
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/sql/schema.py",
line 1289, in create
bind._run_ddl_visitor(ddl.SchemaGenerator, self, checkfirst=checkfirst)
~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 3269, in _run_ddl_visitor
with self.begin() as conn:
~~~~~~~~~~^^
File "/usr/python/lib/python3.14/contextlib.py", line 141, in __enter__
return next(self.gen)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 3259, in begin
with self.connect() as conn:
~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 3295, in connect
return self._connection_cls(self)
~~~~~~~~~~~~~~~~~~~~^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 146, in __init__
Connection._handle_dbapi_exception_noconnection(
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^
err, dialect, engine
^^^^^^^^^^^^^^^^^^^^
)
^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 2450, in _handle_dbapi_exception_noconnection
raise sqlalchemy_exception.with_traceback(exc_info[2]) from e
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 144, in __init__
self._dbapi_connection = engine.raw_connection()
~~~~~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/base.py",
line 3319, in raw_connection
return self.pool.connect()
~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 448, in connect
return _ConnectionFairy._checkout(self)
~~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 1272, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 712, in checkout
rec = pool._do_get()
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/impl.py",
line 178, in _do_get
with util.safe_reraise():
~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/util/langhelpers.py",
line 122, in __exit__
raise exc_value.with_traceback(exc_tb)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/impl.py",
line 176, in _do_get
return self._create_connection()
~~~~~~~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 389, in _create_connection
return _ConnectionRecord(self)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 674, in __init__
self.__connect()
~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 900, in __connect
with util.safe_reraise():
~~~~~~~~~~~~~~~~~^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/util/langhelpers.py",
line 122, in __exit__
raise exc_value.with_traceback(exc_tb)
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/pool/base.py",
line 896, in __connect
self.dbapi_connection = connection = pool._invoke_creator(self)
~~~~~~~~~~~~~~~~~~~~^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/create.py",
line 667, in connect
return dialect.connect(*cargs_tup, **cparams)
~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/sqlalchemy/engine/default.py",
line 630, in connect
return self.loaded_dbapi.connect(*cargs, **cparams) # type:
ignore[no-any-return] # NOQA: E501
~~~~~~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^^^^^^^^^
File
"/home/airflow/.local/lib/python3.14/site-packages/psycopg2/__init__.py", line
122, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) connection to
server at "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX.rds.amazonaws.com"
(YYY.YY.YY.YYY), port 5432 failed: fe_sendauth: no password supplied
(Background on this error at: https://sqlalche.me/e/20/e3q8)
```
### What you think should happen instead?
_No response_
### Operating System
_No response_
### Deployment
None
### Apache Airflow Provider(s)
_No response_
### Versions of Apache Airflow Providers
_No response_
### Official Helm Chart version
1.22.0 (latest released)
### Kubernetes Version
1.36
### Helm Chart configuration
_No response_
### Docker Image customizations
_No response_
### Anything else?
_No response_
### Are you willing to submit PR?
- [ ] Yes I am willing to submit a PR!
### Code of Conduct
- [x] I agree to follow this project's [Code of
Conduct](https://github.com/apache/airflow/blob/main/CODE_OF_CONDUCT.md)
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