我在 AWS 中使用 ubuntu 20.04。
我已经创建了一个 python asyio webapp。
我使用 Nginx。
Nginx 默认页面可以成功加载。
然而，在部署我的 webapp 后，出现错误：
Traceback (most recent call last):
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 503, in _connect
await self._request_authentication()
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 796, in _request_authentication
await self._process_auth(plugin_name, auth_packet)
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 819, in _process_auth
await self.sha256_password_auth(auth_packet)
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 970, in sha256_password_auth
pkt = await self._read_packet()
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 593, in _read_packet
packet.check_error()
File "/usr/local/lib/python3.8/dist-packages/pymysql/protocol.py", line 220, in check_error
err.raise_mysql_exception(self._data)
File "/usr/local/lib/python3.8/dist-packages/pymysql/err.py", line 109, in raise_mysql_exception
raise errorclass(errno, errval)
pymysql.err.OperationalError: (1045, "Access denied for user 'www'@'localhost' (using password: YES)")
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "app.py", line 154, in <module>
loop.run_until_complete(init(loop))
File "/usr/lib/python3.8/asyncio/base_events.py", line 616, in run_until_complete
return future.result()
File "app.py", line 142, in init
yield from orm.create_pool(loop=loop, **configs.db)
File "/home/ubuntu/srv/awesome/www/orm.py", line 17, in create_pool
__pool = yield from aiomysql.create_pool(
File "/usr/local/lib/python3.8/dist-packages/aiomysql/pool.py", line 29, in _create_pool
await pool._fill_free_pool(False)
File "/usr/local/lib/python3.8/dist-packages/aiomysql/pool.py", line 167, in _fill_free_pool
conn = await connect(echo=self._echo, loop=self._loop,
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 75, in _connect
await conn._connect()
File "/usr/local/lib/python3.8/dist-packages/aiomysql/connection.py", line 521, in _connect
raise OperationalError(2003,
pymysql.err.OperationalError: (2003, "Can't connect to MySQL server on '127.0.0.1'")
如何解决我的问题？