Sqlalchemy.exc.OperationalError: (psycopg2.OperationalError)

Question

Meine Flask-App (postgresql db) funktioniert gut in lokalen. Ich schob meinen Code Server und dort habe ich versucht zu run.py db migrate, es wirft mich diese Fehler

Traceback (most recent call last): 
    File "run.py", line 11, in <module> 
    create_app().run() 
    File "/usr/local/lib/python2.7/dist-packages/flask_script/__init__.py", line 412, in run 
    result = self.handle(sys.argv[0], sys.argv[1:]) 
    File "/usr/local/lib/python2.7/dist-packages/flask_script/__init__.py", line 383, in handle 
    res = handle(*args, **config) 
    File "/usr/local/lib/python2.7/dist-packages/flask_script/commands.py", line 216, in __call__ 
    return self.run(*args, **kwargs) 
    File "/usr/local/lib/python2.7/dist-packages/flask_migrate/__init__.py", line 239, in upgrade 
    command.upgrade(config, revision, sql=sql, tag=tag) 
    File "/usr/local/lib/python2.7/dist-packages/alembic/command.py", line 174, in upgrade 
    script.run_env() 
    File "/usr/local/lib/python2.7/dist-packages/alembic/script/base.py", line 407, in run_env 
    util.load_python_file(self.dir, 'env.py') 
    File "/usr/local/lib/python2.7/dist-packages/alembic/util/pyfiles.py", line 93, in load_python_file 
    module = load_module_py(module_id, path) 
    File "/usr/local/lib/python2.7/dist-packages/alembic/util/compat.py", line 79, in load_module_py 
    mod = imp.load_source(module_id, path, fp) 
    File "migrations/env.py", line 87, in <module> 
    run_migrations_online() 
    File "migrations/env.py", line 72, in run_migrations_online 
    connection = engine.connect() 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 2018, in connect 
    return self._connection_cls(self, **kwargs) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 72, in __init__ 
    if connection is not None else engine.raw_connection() 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 2104, in raw_connection 
    self.pool.unique_connection, _connection) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 2078, in _wrap_pool_connect 
    e, dialect, self) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 1405, in _handle_dbapi_exception_noconnection 
    exc_info 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/util/compat.py", line 199, in raise_from_cause 
    reraise(type(exception), exception, tb=exc_tb) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/base.py", line 2074, in _wrap_pool_connect 
    return fn() 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 318, in unique_connection 
    return _ConnectionFairy._checkout(self) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 713, in _checkout 
    fairy = _ConnectionRecord.checkout(pool) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 480, in checkout 
    rec = pool._do_get() 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 1151, in _do_get 
    return self._create_connection() 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 323, in _create_connection 
    return _ConnectionRecord(self) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 449, in __init__ 
    self.connection = self.__connect() 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/pool.py", line 607, in __connect 
    connection = self.__pool._invoke_creator(self) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/strategies.py", line 97, in connect 
    return dialect.connect(*cargs, **cparams) 
    File "/usr/local/lib/python2.7/dist-packages/sqlalchemy/engine/default.py", line 385, in connect 
    return self.dbapi.connect(*cargs, **cparams) 
    File "/usr/local/lib/python2.7/dist-packages/psycopg2/__init__.py", line 164, in connect 
    conn = _connect(dsn, connection_factory=connection_factory, async=async) 
sqlalchemy.exc.OperationalError: (psycopg2.OperationalError) FATAL: parameter "listen_addresses" cannot be changed without restarting the server 

run.py db init funktionierte gut und erfolgreich erstellt die Migrationen Ordner auf dem Server. Jede Hilfe wäre sehr geschätzt

Mein Haupt App-Code

app = Flask(__name__) 
app.config.from_object('config') 

rest_api = Api(app) 

db = SQLAlchemy(app) 

bcrypt = Bcrypt(app) 

from app import routes 

Compress(app) 
assets = Environment(app) 
define_assets(assets) 
cache = Cache(app,config={'CACHE_TYPE': 'simple'}) 

migrate = Migrate(app, db) 

manager = Manager(app) 
manager.add_command('db', MigrateCommand) 

und run.py Code

from flask_failsafe import failsafe 


@failsafe 
def create_app(): 
    from app import manager 
    return manager 

from app import app 
if __name__ == '__main__': 
    create_app().run() 

Answer 1

Fest es mit einem `sudo.

sudo run.py db migrate 

Ich weiß, es ist seltsam, aber ja, sudo hat den Trick