mongodb - 如何在 Dockerized Mongo DB 中初始化集合

Question

下面是docker-compose.yml我用来dockerize我的MongoDB实例:

version: '3.3'

services:
  mongo:
    image: 'mongo:latest'
    ports:
      - '27017:27017'
    volumes:
      - 'data-storage:/data/db'
    networks:
      mynet:

volumes:
  data-storage:

networks:
  mynet:

容器已正确创建，并且启动时没有任何问题。是否可以在容器第一次启动时创建一个 Mongo 集合并用一些文档填充它？

例如，我想运行一些这样的语句:

db.strategyitems.insert( { symbol: "chf", eval_period: 15, buy_booster: 8.0, sell_booster: 5.0, buy_lot: 0.2, sell_lot: 0.2 } )
db.strategyitems.insert( { symbol: "eur", eval_period: 15, buy_booster: 8.0, sell_booster: 5.0, buy_lot: 0.2, sell_lot: 0.2 } )
db.strategyitems.insert( { symbol: "usd", eval_period: 15, buy_booster: 8.0, sell_booster: 5.0, buy_lot: 0.2, sell_lot: 0.2 } )

...

Answer 1

根据MongoDB docker documentation ，您可以使用此组合来初始化您的数据库:
环境变量 MONGO_INITDB_DATABASE

This variable allows you to specify the name of a database to be usedfor creation scripts in /docker-entrypoint-initdb.d/*.js (seeInitializing a fresh instance below). MongoDB is fundamentallydesigned for "create on first use", so if you do not insert data withyour JavaScript files, then no database is created.

和/docker-entrypoint-initdb.d/中的 init .js 文件

Initializing a fresh instance

When a container is started for the first time it will execute fileswith extensions .sh and .js that are found in/docker-entrypoint-initdb.d. Files will be executed in alphabeticalorder. .js files will be executed by mongo using the databasespecified by the MONGO_INITDB_DATABASE variable, if it is present, ortest otherwise. You may also switch databases within the .js script.

请注意，您可以跳过设置环境变量，并在 js 文件中设置您的数据库。见 the doc for more explanations.
希望能帮助到你。