Bind mount docker compose

Docker Engine Compose
1

Hello! I am not being able to create a bind mount so all of my containers can save here and also access it, as well as outside of docker. I have tried different ways to create it but when I run my containers, nothing is being saved in the location I want.
The location is ‘storage-spooler’, this folder is inside another folder where I have my docker-compose.yml since I have read that it has to be in the same location as the .yml (if not please let me know so I can move it one folder outside :slight_smile: )

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Docker compose:

version: '3.8'

x-resource-limits: &resource-limits
  deploy:
    resources:
      limits:
          memory: ${MAX_RAM}
          cpus : ${MAX_CPU}
      # reservations:

services:
  main_service:
    build:
      context: ../
      dockerfile: ./service_containers/main_service/Dockerfile
    stop_grace_period: 50s
    restart: always
    stdin_open: true
    tty: true
    network_mode: "host"
    volumes:
      # - ./storage-spooler:${PATH_TO_STORAGE_SPOOLER}
      - ./storage-spooler:/home/y3qucfm/workspace/ods/system_controller/storage-spooler
    env_file:
      - ./.env
    <<: *resource-limits

  can_logger_service:
    build:
      context: ../
      dockerfile: ./service_containers/can_logger_service/Dockerfile
    network_mode: "host"
    stop_grace_period: 50s
    restart: always
    stdin_open: true
    tty: true
    volumes:
      # - ./storage-spooler:${PATH_TO_STORAGE_SPOOLER}
      - ./storage-spooler:/home/y3qucfm/workspace/ods/system_controller/storage-spooler

    env_file:
      - ./.env
    <<: *resource-limits

  monitor_data_service:
    build:
      context: ../
      dockerfile: ./service_containers/monitor_data_service/Dockerfile
    network_mode: "host"
    restart: always
    stop_grace_period: 50s
    stdin_open: true
    tty: true
    volumes:
      # - ./storage-spooler:${PATH_TO_STORAGE_SPOOLER}
      - ./storage-spooler:/home/y3qucfm/workspace/ods/system_controller/storage-spooler
    env_file:
      - ./.env
    <<: *resource-limits

I am creating a file in my can_logger_service ( outside the folder where I have my .yml → ./service_containers/can_logger_service) container with a python script:

            self.log_file = open(f'{self.path_to_spooler}/log_file.asc', 'w')
            print(f"File opened: {self.log_file}")

where my path_to_storage_spooler is a .env variable:
PATH_TO_STORAGE_SPOOLER=/home/y3qucfm/workspace/ods/system_controller/storage-spooler

To resume everything, I want to be able to stare my files in the “storage-spooler” inside system_controllers. My docker-compose.yml gets the dockerfiles the folders in ./service_containers
I have tried to modify in lots of ways my docker compose but nothing seems to be working! please help! thank you!

2

Your compose file looks right.

I am not sure what this post is about, as you neither shared an exact error message, nor described the actual behavior.

3

Are your paths set correctly, the ones your application uses inside your container?

You can probably go into one of your containers with docker exec -it <c-id> sh and try to create a file ls > /path/test.txt.

4

I don’t get any error messages, my application has no problem creating and opening the file but on the location I have (storage spooler) nothing is being saved, I get that the file was opened but as I mentioned, my storage-spooler folder is empty
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5

nothing is being created :frowning: when I exec onto the container I dont have any location pointing to the bind mount, eventhough I dont know if there should be a bind mount folder
this is one of my containers

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6

Please exec into one of the containers of the compose project and create a file in /home/y3qucfm/workspace/ods/system_controller/storage-spooler and then exec into another container of your project, if the file is visible in /home/y3qucfm/workspace/ods/system_controller/storage-spooler.