Docker容器與Python Web應用程序 - 連接到主機上的Postgres機器（OSX）

Question

我可以連接到我的本地Postgres數據庫在我的web應用程序中，但是不是如果我正在Docker容器中運行Web應用程序。

泊塢窗容器

的Postgres在主機

運行的內部運行

• 的Web應用程序，我不知道這是否是與Postgres的連接設置或泊塢窗網絡設置。

  按照我的設置和命令：

  主機：

  • OSX 10.11.6
  • 的PostgreSQL 9.6

  泊塢容器

  • 泊塢1.13.1
  • 多克爾機0.9.0
  • 多克爾容器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 
  

  隨着HOST模式泊塢網絡

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

  錯誤：

  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?

  隨着BRIDGE模式泊塢網絡

  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 
  

  錯誤：

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

  任何想法？

Answer 1

有一個關於在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.