docker compose中mongodb的卷配置

Question

我花了很长时间尝试将mongo db挂载到我的本地存储上，但是如果我想同时初始化db，代码注释(#- ./database:/data/db)无法成功挂载。然后，我尝试创建一个卷，如现在所示(单独创建卷部分)。而且它是有效的。你知道其中的区别和原因吗？你能指出一下吗？提前谢谢。

修改前

version: '3.5'

services:

  mongodb:
    image: mongo
    container_name: mongodb
    restart: unless-stopped
    ports:
      - 27017:27017
    environment:
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=root
    volumes:
      - ./docker-entrypoint-initdb.d/mongo-init.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
      - ./database:/data/db    # not work 
  mongo-express:
    image: mongo-express
    container_name: mongo-express
    restart: unless-stopped
    ports:
      - 8081:8081
    environment:
      - ME_CONFIG_MONGODB_ADMINUSERNAME=root
      - ME_CONFIG_MONGODB_ADMINPASSWORD=root
      - ME_CONFIG_MONGODB_SERVER=mongodb
      - ME_CONFIG_MONGODB_ENABLE_ADMIN=true
      - ME_CONFIG_BASICAUTH_USERNAME=xhp
      - ME_CONFIG_BASICAUTH_PASSWORD=xhp
    depends_on:
      - mongodb

修改后

version: '3.5'

services:

  mongodb:
    image: mongo
    container_name: mongodb
    restart: unless-stopped
    ports:
      - 27017:27017
    environment:
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=root
    volumes:
      - ./docker-entrypoint-initdb.d/mongo-init.js:/docker-entrypoint-initdb.d/mongo-init.js:ro
      - mongodb:/data/db
      # - ./database:/data/db     not work 
  mongo-express:
    image: mongo-express
    container_name: mongo-express
    restart: unless-stopped
    ports:
      - 8081:8081
    environment:
      - ME_CONFIG_MONGODB_ADMINUSERNAME=root
      - ME_CONFIG_MONGODB_ADMINPASSWORD=root
      - ME_CONFIG_MONGODB_SERVER=mongodb
      - ME_CONFIG_MONGODB_ENABLE_ADMIN=true
      - ME_CONFIG_BASICAUTH_USERNAME=xhp
      - ME_CONFIG_BASICAUTH_PASSWORD=xhp
    depends_on:
      - mongodb
volumes:
  mongodb:

Answer 1

这种差异会导致不同的本地目录。我的问题应该通过删除旧卷并更新它来解决。