"Docker：如何使用 docker-compose 将数据从主机映射到容器（mongo）"

Question

I am trying to volume map, data from host to container using docker-compose. I found this docker-compose.yml<\/strong> from prisma docs<\/a>

version: '3'
services:
  prisma:
    image: prismagraphql/prisma:1.34
    restart: always
    ports:
      - '4466:4466'
    environment:
      PRISMA_CONFIG: |
        port: 4466
        managementApiSecret: mysecret42
        databases:
          default:
            connector: mongo
            uri: mongodb://prisma:prisma@mongo
  mongo:
    image: mongo
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: prisma
      MONGO_INITDB_ROOT_PASSWORD: prisma
    ports:
      - '27017:27017'
    volumes:
      - mongo:/var/lib/mongo
volumes: 
  mongo:

Answer 1

What you are describing is not the behavior of docker. There must be something in the prismagraph program that erases all the data every time it starts.

docker compose down requires a -v flag in order to remove named volumes.

https://docs.docker.com/compose/reference/down/

You can confirm this by doing:

docker volume ls

docker volume inspect mongo

Update : the location that mongo stores data is /var/lib/mongodb , not /var/lib/mongo

Change your docker-compose file and it should work.

  mongo:
    image: mongo
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: prisma
      MONGO_INITDB_ROOT_PASSWORD: prisma
    ports:
      - '27017:27017'
    volumes:
      - mongo:/var/lib/mongodb
volumes: 
  mongo:

Answer 2

The following worked:

mongo:
    image: mongo
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: prisma
      MONGO_INITDB_ROOT_PASSWORD: prisma
    ports:
      - '27017:27017'
    volumes:
      - mongo:/data/db
volumes: 
  mongo:

Answer 3

Worked for me.

  mongo:
    image: mongo
    restart: always
    environment:
      MONGO_INITDB_ROOT_USERNAME: prisma
      MONGO_INITDB_ROOT_PASSWORD: prisma
    volumes:
      - ./mongo/data:/data/db
  volumes:
    mongo: