docker中连接mongo express服务时出现问题

Question

我有一个docker配置，在这里我启动了nginx服务器。现在我必须运行mongo和mongo express才能连接到我的数据库。当我在docker compose中输入这两个的配置时。yml并尝试docker组合，mongo服务启动，但mongo express显示此错误

Could not connect to database using connectionString: mongodb://root:pass@mongodb:27017/" mongo-express_1 | (node:8) UnhandledPromiseRejectionWarning: MongoNetworkError: failed to connect to server [mongodb:27017] on first connect

非常感谢您的帮助，以下是我的配置。

docker编写。yml公司

version: "3"

services:
app:
  build:
    context: .
    dockerfile: Dockerfile
  image: cryptoterminal
  container_name: app
  restart: unless-stopped
  volumes:
    - ./:/var/www

webserver:
  build:
    context: .
    dockerfile: Dockerfile_Nginx
  image: nginx
  container_name: webserver
  restart: unless-stopped
  ports:
    - "8080:80"
  volumes: 
    - ./:/var/www
    - ./config/nginx/:/etc/nginx/conf.d/
  depends_on:
    - app
mongo:
  image: mongo
  environment:
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=pass
mongo-express:
  image: mongo-express
  environment:
    - ME_CONFIG_MONGODB_SERVER=mongodb
    - ME_CONFIG_MONGODB_ENABLE_ADMIN=true
    - ME_CONFIG_MONGODB_ADMINUSERNAME=root
    - ME_CONFIG_MONGODB_ADMINPASSWORD=pass
    - ME_CONFIG_BASICAUTH_USERNAME=admin
    - ME_CONFIG_BASICAUTH_PASSWORD=admin123
  depends_on:
      - mongo
  ports:
    - "8888:8081"

Dockerfile文件

FROM php:7.4-fpm-alpine

WORKDIR /var/www

RUN apk update && apk add \

build-base \
vim

RUN addgroup -g 1000 -S www && \
adduser -u 1000 -S www -G www

USER www

COPY --chown=www:www . /var/www

EXPOSE 9000

Dockerfile\u Nginx文件

FROM nginx:alpine

COPY ./config/nginx/app.conf /etc/nginx/conf.d/app.conf

COPY . /var/www

.env文件

MONGO_DB_URI=mongodb://root:pass@mongodb:27017/crypto-terminal?authSource=admin

应用程序。conf文件

server {
    listen 80;
    index index.php index.html;
    error_log /var/log/nginx/error.log;
    access_log /var/log/nginx/access.log;
    root /var/www;
    location ~ \.php$ {
        try_files $uri =404;
        fastcgi_split_path_info ^(.+\.php)(/.+)$;
        fastcgi_pass app:9000;
        fastcgi_index index.php;
        include fastcgi_params;
        fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
        fastcgi_param PATH_INFO $fastcgi_path_info;
    }
    location / {
        try_files $uri $uri/ /index.php?$query_string;
    }
}

文件夹结构

project_folder
    php
        config
            nginx
                app.conf
    .env
    Dockerfile
    Dockerfile_Nginx
    docker-compose.yml
    index.php

Answer 1

在docker compose文件中，调用mongo服务。这是您可以在docker网络上寻址的名称。在你的连接字符串中，你说

mongodb://root:pass@mongodb:27017/"

应该是这样的

mongo://root:pass@mongo:27017/"

由于连接字符串是使用docker compose文件中的环境变量构建的，因此需要更改的是

- ME_CONFIG_MONGODB_SERVER=mongodb

到

- ME_CONFIG_MONGODB_SERVER=mongo