Docker wipes out mongoDB container data-CodePudding

I have created a program and tested that works just fine. I decided to dockerize it, and it seems after maybe some hours or few days the data of mongoDB container get all deleted. The docker-compose.yml file:

version: '3'
services:
  node:
    restart: always
    build: ./nodeServer
    container_name: nodeserver
    ports:
      - 5000:5000
    depends_on:
      - database
    networks:
      twitter_articles:
        ipv4_address: 172.24.0.2 
    environment:
      - TZ=Europe/Athens
  database:
    restart: always
    build: ./mongoDump/database
    container_name: mongodb
    ports:
      - 27017:27017
    networks:
      twitter_articles:
        ipv4_address: 172.24.0.4 
    volumes:
      - ./data:/data/db
    environment:
      - TZ=Europe/Athens
  pythonscript:
    restart: always
    build: ./python
    container_name: pythonscript
    depends_on:
      - database
    networks:
      twitter_articles:
        ipv4_address: 172.24.0.3 
    environment:
      - TZ=Europe/Athens
networks:
  twitter_articles:
    ipam:
      config:
        - subnet: 172.24.0.0/24

And the three Dockerfile's that they are builded:

nodeserver:

FROM node:14.16.1

COPY package*.json ./
RUN npm install

COPY . ./

CMD [ "npm", "start"]

mongodb:

FROM mongo:5.0.3
CMD docker-entrypoint.sh mongod

pythonscript

FROM python:3.9
COPY requirements.txt ./
RUN pip install -r requirements.txt
    
COPY . ./
    
CMD [ "python", "-u", "./init2.py" ]

As mentioned before without Docker the app works just fine and there isn't that kind of behaviour of database getting wiped out. I have tried also internal Docker storage which also does the same thing. I have tried to check the logs and I saw that there is an error happening in pythonscript container each time database wipes out. I know that an error should happen in pythonscript but there is no such a code anywhere in the app to perform deletion of collections or databases (also without Docker this error still happens but nothing gets deleted).

Any ideas?

CodePudding user response：

you can create a volume external and add the data of the mango into it by this way you data didn't wipe even you turn off your docker-compose

version: '3'
services:
  node:
    restart: always
    build: ./nodeServer
    container_name: nodeserver
    ports:
      - 5000:5000
    depends_on:
      - database
    networks:
      twitter_articles:
        ipv4_address: 172.24.0.2 
    environment:
      - TZ=Europe/Athens
  database:
    restart: always
    build: ./mongoDump/database
    container_name: mongodb
    ports:
      - 27017:27017
    networks:
      twitter_articles:
        ipv4_address: 172.24.0.4 

    volumes: 
      - mongo_data:/data/db
    environment:
      - TZ=Europe/Athens
  pythonscript:
    restart: always
    build: ./python
    container_name: pythonscript
    depends_on:
      - database
    networks:
      twitter_articles:
        ipv4_address: 172.24.0.3 
    environment:
      - TZ=Europe/Athens
networks:
  twitter_articles:
    ipam:
      config:
        - subnet: 172.24.0.0/24
    volumes:
      mongo_data:
        external: true

now you have to create a volume in your docker using

 docker volume create --name=mongo_data

then docker-compose down and

 docker-compose up --build -d

CodePudding user response：

I have been advised that it is always better idea to save data outside of docker container in separate volume. Look for this tutorial volumes.