Docker 组合端口映射 [英] Docker compose port mapping

问题描述

我有一个 docker-compose yml 文件，如下所示

I have a docker-compose yml file as in below

version: '2'
services:
  nodejs:
    build:
      context: .
      dockerfile: DockerFile
    ports:
      - "4000:4000"
    links:
      - redis
    expose:
      - "6379"
  redis:
    build:
      context: .
      dockerfile: Dockerfile-redis

我的目标是将 nodejs-127.0.0.1 端口 6379 转发到 redis 主机.我已经可以从 nodejs 机器 ping redis，但是端口没有映射.尝试公开选项，但也没有机会.

My goal is to forward nodejs-127.0.0.1 port 6379 to the redis host. I can already ping redis from the nodejs machine, but the ports are not mapped. Tried expose options, but no chance either.

推荐答案

如果您想从 nodejs 容器绑定到 redis 端口，则必须在 redis 中公开该端口 容器:

If you want to bind to the redis port from your nodejs container you will have to expose that port in the redis container:

version: '2'
services:
  nodejs:
    build:
      context: .
      dockerfile: DockerFile
    ports:
      - "4000:4000"
    links:
      - redis

  redis:
    build:
      context: .
      dockerfile: Dockerfile-redis
    expose:
      - "6379"

expose 标签可以让你暴露端口而不将它们发布到主机，但它们会暴露给容器网络.

The expose tag will let you expose ports without publishing them to the host machine, but they will be exposed to the containers networks.

https://docs.docker.com/compose/compose-file/#暴露

ports 标签将映射主机端口和容器端口 HOST:CONTAINER

The ports tag will be mapping the host port with the container port HOST:CONTAINER

https://docs.docker.com/compose/compose-file/#端口

这篇关于Docker 组合端口映射的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！