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无法远程连接到 Postgres Docker 容器

[英]Can't connect to Postgres Docker container remotely

原文 2019-03-20 19:09:08 4 2 postgresql/ docker/ centos

I have a docker container running on a centos machine using the official Postgres docker image and it cannot be connected remotely.我有一个使用官方 Postgres docker 映像在 centos 机器上运行的 docker 容器，但它无法远程连接。 sudo docker ps | grep postgres sudo docker ps | grep postgres gives sudo docker ps | grep postgres给出

492192ff9170 postgres "/docker-entrypoint.s" 2 years ago Up 18 hours 0.0.0.0:5432->5432/tcp postgres 492192ff9170 postgres "/docker-entrypoint.s" 2 年前上升 18 小时 0.0.0.0:5432->5432/tcp postgres

when I try psql -h <server domain name> -p 5432 -U postgres on the other machine, it just printed out当我在另一台机器上尝试psql -h <server domain name> -p 5432 -U postgres时，它只是打印出来

psql: could not connect to server: Operation timed out psql：无法连接到服务器：操作超时
Is the server running on host [domain name] ([ip address]) and accepting TCP/IP connections on port 5432?服务器是否在主机 [域名]（[ip 地址]）上运行并接受端口 5432 上的 TCP/IP 连接？

I did sudo iptables -S | grep 5432我做了sudo iptables -S | grep 5432 sudo iptables -S | grep 5432 on the remote server and it printed out远程服务器上的sudo iptables -S | grep 5432并打印出来

-A DOCKER -d 172.17.0.2/32 ! -一个码头工人 -d 172.17.0.2/32 ！ -i docker0 -o docker0 -p tcp -m tcp --dport 5432 -j ACCEPT -i docker0 -o docker0 -p tcp -m tcp --dport 5432 -j 接受

so it doesn't looks like port 5432 was blocked所以看起来port 5432被阻止

Inside the container /var/lib/postgresql/data/ ,在容器/var/lib/postgresql/data/ ，
host all all 0.0.0.0/0 md5 had been added to the pg_hba.conf , while postgresql.conf has listen_addresses = '*' specified. host all all 0.0.0.0/0 md5已添加到pg_hba.conf ，而postgresql.conf已指定listen_addresses = '*' 。

Still, it cannot be accessed remotely, although I can successfully connect to the instance locally using psql -h localhost -p 5432 -U postgres尽管如此，它仍然无法远程访问，尽管我可以使用psql -h localhost -p 5432 -U postgres在本地成功连接到实例

Could any one shed some lights on this issue?任何人都可以对这个问题有所了解吗？ Much appreciated.非常感激。

2 个解决方案

How did you started the postgres container? 你是怎么开始使用postgres容器的？

Probably you're only missing a container-to-host port binding option. 可能你只是缺少容器到主机端口绑定选项。

Try adding -p 5432:5432 to your docker run command. 尝试将-p 5432:5432添加到docker run命令。 This will map port 5432 in the container to port 5432 on the Docker host (your remote server). 这会将容器中的端口5432映射到Docker主机（远程服务器）上的端口5432。

See docker networking docs for more information. 有关更多信息，请参阅docker网络文档。 See also this postgres example . 另见这个postgres示例。

I encountered a similar problem, I was not able to connect to a postgres db in a docker container remotely.我遇到了类似的问题，我无法远程连接到 docker 容器中的 postgres 数据库。 I knocked my head around for 2 days until I discovered the solution.我敲了敲脑袋 2 天，直到我找到了解决方案。

I configured my ports in the following way: -p 5438:5432 .我按以下方式配置了我的端口： -p 5438:5432 。 In other words, I was trying to expose port 5438 on my host.换句话说，我试图在我的主机上公开端口 5438。

My host, as it turns out, was a Azure VM with Ubuntu installed.事实证明，我的主机是一台安装了 Ubuntu 的 Azure VM。 And I finally remembered that under the "Networking" tab in the Azure portal you have a list of "Inbound port rules."我终于记得在 Azure 门户的“网络”选项卡下有一个“入站端口规则”列表。

Well, I needed to open port 5438. I did that and BANG it started working.好吧，我需要打开端口 5438。我这样做了，然后它就开始工作了。 Wasn't an issue with docker config at all.根本不是 docker config 的问题。