asyncpg 错误：Heroku 中“没有主机的 pg_hba.conf 条目”

Question

我正在使用 asyncpg 连接 Heroku postgresql 中的数据库，使用 python：

import asyncpg

async def create_db_pool():
   bot.pg_con = await asyncpg.create_pool(dsn="postgres://....", host="....amazonaws.com", user="xxx", database="yyy", port="5432", password="12345")

它一直工作得很好，直到我收到了来自 heroku 的一封电子邮件，建议我进行维护：
Maintenance (DATABASE_URL on myappname) is starting now. We will update you when it has completed.

然后就出现了这个错误：

asyncpg.exceptions.InvalidAuthorizationSpecificationError: no pg_hba.conf entry for host "123.456.789.10", user "xxx", database "yyy", SSL off

我尝试遵循一些帮助，例如 putssl=True 但出现此错误：

ssl.SSLCertVerificationError: [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: self signed certificate (_ssl.c:1108)

和放一样ssl="allow"

asyncpg.exceptions.InvalidPasswordError: password authentication failed for user "xxx"

我能做什么来解决这个问题？

Answer 1

Using the solution from this worked.

import ssl
ssl_object = ssl.create_default_context()
ssl_object.check_hostname = False
ssl_object.verify_mode = ssl.CERT_NONE
# connect elsewhere
pool = await asyncpg.create_pool(uri, ssl=ssl_object)

Note: You don't need to use any certificate like mentioned in the comment, as we set verify_mode to not use certificates.