从外部连接到 docker 容器中的 Postgresql [英] Connecting to Postgresql in a docker container from outside

问题描述

我在 docker 容器中的服务器上安装了 Postgresql.我如何从外部连接到它，即从我的本地计算机?我应该应用什么设置来允许它?

I have Postgresql on a server in a docker container. How can I connect to it from the outside, that is, from my local computer? What setting should I apply to allow that?

推荐答案

你可以这样运行 Postgres(映射端口):

You can run Postgres this way (map a port):

docker run --name some-postgres -e POSTGRES_PASSWORD=mysecretpassword -d -p 5432:5432 postgres

现在你已经将容器的 5432 端口映射到服务器的 5432 端口.-p <host_port>:<container_port> .所以现在你的 postgres 可以从你的 public-server-ip:5432

So now you have mapped the port 5432 of your container to port 5432 of your server. -p <host_port>:<container_port> .So now your postgres is accessible from your public-server-ip:5432

测试:运行 postgres 数据库(上面的命令)

To test: Run the postgres database (command above)

docker ps
CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                     NAMES
05b3a3471f6f        postgres            "/docker-entrypoint.s"   1 seconds ago       Up 1 seconds        0.0.0.0:5432->5432/tcp    some-postgres

进入你的容器并创建一个数据库:

Go inside your container and create a database:

docker exec -it 05b3a3471f6f bash
root@05b3a3471f6f:/# psql -U postgres
postgres-# CREATE DATABASE mytest;
postgres-# q

转到您的本地主机(您有一些工具或 psql 客户端).

Go to your localhost (where you have some tool or the psql client).

psql -h public-ip-server -p 5432 -U postgres

(密码 mysecretpassword)

(password mysecretpassword)

postgres=# l

                             List of databases
   Name    |  Owner   | Encoding |  Collate   |   Ctype    |   Access privileges
-----------+----------+----------+------------+------------+-----------------------
 mytest    | postgres | UTF8     | en_US.utf8 | en_US.utf8 |
 postgres  | postgres | UTF8     | en_US.utf8 | en_US.utf8 |
 template0 | postgres | UTF8     | en_US.utf8 | en_US.utf8 | =c/postgres   

因此，您正在从本地主机访问数据库(在服务器上的 docker 中运行).

So you're accessing the database (which is running in docker on a server) from your localhost.

在这篇文章详细解释了.

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