Docker:按主机访问另一个容器 [英] Docker : Accessing another container by host

问题描述

我在docker-compose yaml文件中定义了两个容器，这些容器需要彼此通信，但是它们不能.

I have two containers defined in a docker-compose yaml file that need to talk to each other, but they can't.

version: "3.9"

networks:
  localdev:
    driver: 'bridge'

services:
  master-db:
    image: mysql:8.0
    container_name: master-db
    hostname: master-db
    command: --default-authentication-plugin=mysql_native_password
    restart: always
    ports:
      - "4000:3306"
    networks:
      - localdev

  page-store:
    hostname: page-store
    build:
      context: .
      dockerfile: Dockerfile.page_store
    container_name: page-store
    ports:
      - "2020:2020"
    networks:
      - localdev
    links:
      - master-db

在页面存储区的Python Flask微服务中，我尝试使用主机名master-db来访问MySQL数据库，但是该名称无法解析.

In the page-store Python Flask microservice, I try to access the MySQL database by using its hostname of master-db, but the name cannot resolve.

推荐答案

您应该能够使用各自的服务名称相互连接. master-db 和 page-store 删除 hostname

You should be able to connect each other using respective service names. master-db and page-store removing hostname

根据官方指南，如果您想在容器的/etc/hosts 中定义 master-db ， page-store 使用 hostname:page-store 等.

As per Official guide you may have to define master-db,page-store in container's /etc/hosts, if you want to use hostname: page-store etc.

请参考此 SO线程.

还使用>链接可能不是最佳选择.

Also using --links may not be the best option.

这篇关于Docker:按主机访问另一个容器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！