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.如何从外部(即从本地计算机)连接到它?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

您可以通过以下方式运行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

因此，现在您已将容器的端口5432映射到服务器的端口5432. -p <host_port>:<container_port>.因此，现在您可以从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

要测试: 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

进入容器并创建数据库:

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(那里有一些工具或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(该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.

在此帖子中详细说明.

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