Psycopg2报告pg_hba.conf错误 [英] Psycopg2 reporting pg_hba.conf error

问题描述

在尝试使用PostgreSQL和Psycopg2时遇到了一种奇怪的情况。由于某种原因，每次我尝试通过python连接到postgre数据库时，都会出现以下错误：

I've run into a weird situation while trying to use PostgreSQL and Psycopg2. For some reason, every time I attempt to connect to the postgre database via python, I get the following error:

psycopg2.OperationalError: FATAL:  no pg_hba.conf entry for host "127.0.0.1", user "steve", database "steve", SSL on
FATAL:  no pg_hba.conf entry for host "127.0.0.1", user "steve", database "steve", SSL off

自然地，我检查了pg_hba.conf以查看问题所在是的，但据我所知一切似乎都已正确配置：

Naturally, I checked pg_hba.conf to see what the issue was, but everything appeared to be configured correctly as far as I can see:

pg_hba.conf：

# TYPE  DATABASE        USER            CIDR-ADDRESS            METHOD

# "local" is for Unix domain socket connections only
local   all             all                                     md5
# IPv4 local connections:
host    all             all             127.0.0.1/32            md5
# IPv6 local connections:
host    all             all             ::1/128                 md5

此外，我发现我可以像期望的那样通过psql连接到数据库：

In addition, I've found that I can connect to the database via psql as I would expect:

$ psql -U steve -h 127.0.0.1
...
steve=>

任何人都对这里可能发生的事情有任何想法？

Anyone have any ideas as to what could be going on here? Thanks in advance!

推荐答案

典型的解释包括：

• 您正在连接到错误的服务器。
  
  数据库服务器是否与Python在同一主机上运行？

• You are connecting to the wrong server.
  Is the DB server running on the same host as Python does?

您得到了错误的端口。

检查服务器日志，是否看到连接尝试。当然，您必须为此记录连接。请参见配置参数 log_connections 。

You got the wrong port.
Check the server log if you see a connection attempt. You have to log connections for that, of course. See the config parameter log_connections.

更改后您没有重新加载（SIGHUP）服务器 pg_hba.conf -或重新加载了错误的集群（如果您有多个数据库集群）。

使用 pg_ctl 或 pg_ctlcluser 关于Debian及其衍生工具。

You did not reload (SIGHUP) the server after changing pg_hba.conf - or reloaded the wrong cluster (if you have multiple DB clusters).
Use pg_ctl or pg_ctlcluser on Debian and derivatives for that.

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