文档化PostgreSQL - psql连接被拒绝

Question

我正在和码头商玩，我想把一个邮政集装箱变成码头。

我正在跟踪官方的示例，但是我无法连接到使用psql运行的映像。

我创建了带有示例内容的Dockerfile。我从Dockerfile构建了一个图像，并为它指定了一个名称。然后运行PostgreSQL服务器容器(在前台)。

~/test » docker run --rm -P --name pg_test eg_postgresql                                                                                                       
2014-10-10 06:12:43 UTC LOG:  database system was interrupted; last known up at 2014-10-10 06:12:29 UTC
2014-10-10 06:12:43 UTC LOG:  database system was not properly shut down; automatic recovery in progress
2014-10-10 06:12:43 UTC LOG:  redo starts at 0/1782F68
2014-10-10 06:12:43 UTC LOG:  record with zero length at 0/1782FA8
2014-10-10 06:12:43 UTC LOG:  redo done at 0/1782F68
2014-10-10 06:12:43 UTC LOG:  last completed transaction was at log time 2014-10-10 06:12:29.2487+00
2014-10-10 06:12:43 UTC LOG:  database system is ready to accept connections
2014-10-10 06:12:43 UTC LOG:  autovacuum launcher started

然后我打开另一个航站楼，找出港口：

~/test » docker ps                                                                                                                                             
CONTAINER ID        IMAGE                  COMMAND                CREATED             STATUS              PORTS                     NAMES
aaedb0479139        eg_postgresql:latest   "/usr/lib/postgresql   3 days ago          Up 41 seconds       0.0.0.0:49154->5432/tcp   pg_test

所以我可以使用psql连接到实例。但我不能..。

~/test » psql -h localhost -p 49154 -d docker -U docker --password                                                                                             
Password for user docker:
psql: 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 49154?
could not connect to server: Connection refused
    Is the server running on host "localhost" (::1) and accepting
    TCP/IP connections on port 49154?
could not connect to server: Connection refused
    Is the server running on host "localhost" (fe80::1) and accepting
    TCP/IP connections on port 49154?

任何帮助都是非常感谢的。

Answer 1

在我的mac上运行这个对我有用：

 $ boot2docker ip
 The VM's Host only interface IP address is: 192.168.59.103

然后按以下方式连接：

 $ psql -h 192.168.59.103 -p 49159 -d docker -U docker --password

这样做并不理想，但https://docs.docker.com/installation/mac/的说明表明，如果您想直接从mac连接，这是正确的解决方案。

Answer 2

对于我来说，解决方案只是在连接字符串中使用host.docker.internal而不是localhost。

https://github.com/npgsql/Npgsql.EntityFrameworkCore.PostgreSQL/issues/225

Answer 3

如果将--发布选项添加到docker run命令中

docker run --rm -P --publish 127.0.0.1:5432:5432 --name pg_test eg_postgresql 

当您运行docker文件时，下面的内容就可以工作了(注意端口现在是5432)

psql -h localhost -p 5432 -d docker -U docker --password