krestix opened a new issue #16830:
URL: https://github.com/apache/airflow/issues/16830
Something bad has happened.
Please consider letting us know by creating a bug report using GitHub.
Python version: 3.6.13
Airflow version: 2.1.0
Node: airflow2-webserver-d6c664665-h2f62
Hi, suddenly without any configuration changes airflow crashed and while
trying to access the host we got an html page with this content:
```
Traceback (most recent call last):
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/engine/base.py",
line 2336, in _wrap_pool_connect
return fn()
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 364, in connect
return _ConnectionFairy._checkout(self)
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 778, in _checkout
fairy = _ConnectionRecord.checkout(pool)
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 500, in checkout
rec._checkin_failed(err)
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py",
line 70, in __exit__
with_traceback=exc_tb,
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/util/compat.py",
line 182, in raise_
raise exception
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 497, in checkout
dbapi_connection = rec.get_connection()
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 610, in get_connection
self.__connect()
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 661, in __connect
pool.logger.debug("Error on connect(): %s", e)
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/util/langhelpers.py",
line 70, in __exit__
with_traceback=exc_tb,
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/util/compat.py",
line 182, in raise_
raise exception
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/pool/base.py",
line 656, in __connect
connection = pool._invoke_creator(self)
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/engine/strategies.py",
line 114, in connect
return dialect.connect(*cargs, **cparams)
File
"/home/airflow/.local/lib/python3.6/site-packages/sqlalchemy/engine/default.py",
line 508, in connect
return self.dbapi.connect(*cargs, **cparams)
File
"/home/airflow/.local/lib/python3.6/site-packages/psycopg2/__init__.py", line
127, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: ERROR: pgbouncer cannot connect to server
```
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