Question

我的PostgreSQL在端口5432上的docker下运行。

docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS               NAMES
f7464f480dd3        postgres            "docker-entrypoint..."   6 hours ago         Up 3 minutes        5432/tcp            core_postgres

这是一个官方postgres容器，其中创建了一些自定义用户和数据库。

我正在使用psycopg2进行连接：

import psycopg2
conn = "host='localhost' dbname='username' user='username' password='password'"
psycopg2.connect(conn)

但它提出了：

Traceback (most recent call last):
  File "check_postgres.py", line 3, in <module>
    psycopg2.connect(conn)
  File "/Users/pivanchy/startup/venv/lib/python2.7/site-packages/psycopg2/__init__.py", line 130, in connect
conn = _connect(dsn, connection_factory=connection_factory, **kwasync)
psycopg2.OperationalError: could not connect to server: Connection refused
Is the server running on host "localhost" (::1) and accepting
TCP/IP connections on port 5432?
could not connect to server: Connection refused
Is the server running on host "localhost" (127.0.0.1) and accepting
TCP/IP connections on port 5432?

我已经检查了pg_hba.conf和postgresql.conf两个文件，看起来没什么奇怪的。

P.S。我也不能通过telnet连接到这个端口：

telnet localhost 5432

Trying ::1...
telnet: connect to address ::1: Connection refused
Trying 127.0.0.1...
telnet: connect to address 127.0.0.1: Connection refused
telnet: Unable to connect to remote host

有什么问题？我的容器仍然在日志中运行而没有错误。

Answer 1

您需要使用-p选项将localhost的端口映射到容器的端口5432：docker run -p 5432:5432 [Other Options] postgres。

之后，PORTS中的docker ps列应显示如下内容：0.0.0.0:5432->5432

数据库连接拒绝

1 个答案: