Docker容器与Python Web应用程序 - 连接到主机上的Postgres机器（OSX）

Question

我可以连接到我的本地Postgres数据库在我的web应用程序中，但是不是如果我正在Docker容器中运行Web应用程序。

泊坞窗容器

的Postgres在主机

运行的内部运行

• 的Web应用程序，我不知道这是否是与Postgres的连接设置或泊坞窗网络设置。

  按照我的设置和命令：

  主机：

  • OSX 10.11.6
  • 的PostgreSQL 9.6

  泊坞容器

  • 泊坞1.13.1
  • 多克尔机0.9.0
  • 多克尔容器OS：蟒：3.6.0高山
  • 的Python 3.6 + psycopg2 == 2.7

  postgresql.conf中：

  listen_addresses = '*' 
  

  的pg_hba.conf

  host all    all    127.0.0.1/32   trust 
  host all    all    0.0.0.0/0    trust 
  host all    all    172.17.0.0/24   trust 
  host all    all    192.168.99.0/24  trust 
  

  随着HOST模式泊坞网络

  docker run -i --net=host -h 127.0.0.1 -e POSTGRES_URI=postgresql://127.0.0.1:5432/db my/image 
  

  错误：

  could not connect to server: Connection refused
  Is the server running on host "127.0.0.1" and accepting TCP/IP connections on port 5432?

  随着BRIDGE模式泊坞网络

  docker run -i --add-host=dockerhost:`docker-machine ip ${DOCKER_MACHINE}` -e POSTGRES_URI=postgresql://dockerhost:5432/db -p 8000:8000 -p 5432:5432 my/image 
  

  错误：

  server closed the connection unexpectedly
  This probably means the server terminated abnormally before or while processing the request.

  任何想法？

Answer 1

有一个关于在docs

I want to connect from a container to a service on the host

The Mac has a changing IP address (or none if you have no network access). Our current recommendation is to attach an unused IP to the lo0 interface on the Mac; for example: sudo ifconfig lo0 alias 10.200.10.1/24 , and make sure that your service is listening on this address or 0.0.0.0 (ie not 127.0.0.1). Then containers can connect to this address.