laravel - Laravel在Docker上:[2002]连接被拒绝

Question

我试图在Docker上安装Laravel应用，但是数据库容器给我带来了麻烦。

具体来说，当我尝试在浏览器中打开应用程序时出现此错误:

SQLSTATE[HY000] [2002] Connection refused

但是，据我所知，所有用户凭据都是正确的。也许我缺少什么？请看下面。

docker-compose.yml:

version: '3'
services:
  app:
    build:
      context: ./
      dockerfile: app.dockerfile
    working_dir: /var/www
    volumes:
      - ./yoga/:/var/www
    environment:
      - "DB_PORT=33061"
      - "DB_HOST=database"
  web:
    build:
      context: ./
      dockerfile: web.dockerfile
    working_dir: /var/www
    volumes:
      - ./:/var/www
    ports:
      - 8080:80
  database:
    image: mysql:5.7
    container_name: database
    volumes:
      - dbdata:/var/lib/mysql
    environment:
      - "MYSQL_DATABASE=yogadb"
      - "MYSQL_USER=yogi"
      - "MYSQL_PASSWORD=mypasshere"
      - "MYSQL_ROOT_PASSWORD="
    ports:
        - "33061:3306"

volumes:
  dbdata:

.env:

DB_CONNECTION=mysql
DB_HOST=database
DB_PORT=3306
DB_DATABASE=yogadb
DB_USERNAME=yogi
DB_PASSWORD=mypasshere

当我在docker外部运行应用程序时，一切正常，我只是将 DB_HOST=database替换为 DB_HOST=127.0.0.1
我该怎么做才能解决此问题？

docker ps输出为:

CONTAINER ID        IMAGE               COMMAND                  CREATED             STATUS              PORTS                                NAMES
2da7283f7a65        docker_app          "docker-php-entrypoi…"   19 minutes ago      Up 7 seconds        9000/tcp                             docker_app_1
4801fe3312c1        mysql:5.7           "docker-entrypoint.s…"   2 hours ago         Up 7 seconds        33060/tcp, 0.0.0.0:33061->3306/tcp   4801fe3312c1_database
ab370ae1d155        docker_web          "nginx -g 'daemon of…"   25 hours ago        Up 7 seconds        443/tcp, 0.0.0.0:8080->80/tcp        docker_web_1

Answer 1

如@prd所述，您需要为容器[1]创建桥接网络，然后将容器添加到网络[2]。

容器的主机名由docker-compose.yml中的服务名称确定。在您的情况下，如果app服务将通过主机名database和端口database连接到3306服务。

因此docker-compose.yml变为:

version: '3'
services:
  app:
    build:
      context: ./
      dockerfile: app.dockerfile
    working_dir: /var/www
    volumes:
      - ./yoga/:/var/www
    environment:
      - "DB_PORT=3306"                # Port of database container is 3306
      - "DB_HOST=database"
    networks:
      - name_of_network               # [2] add container to network
  web:
    build:
      context: ./
      dockerfile: web.dockerfile
    working_dir: /var/www
    volumes:
      - ./:/var/www
    ports:
      - 8080:80
  database:                           # Name of service, which determines hostname of container
    image: mysql:5.7
    container_name: database
    volumes:
      - dbdata:/var/lib/mysql
    environment:
      - "MYSQL_DATABASE=yogadb"
      - "MYSQL_USER=yogi"
      - "MYSQL_PASSWORD=mypasshere"
      - "MYSQL_ROOT_PASSWORD="
    ports:
        - "33061:3306"
    networks:
      - name_of_network               # [2] add container to network

volumes:
  dbdata:

networks:
  name_of_network:                    # [1] create bridged network