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mongodbdockerdocker-swarm

Run mongo script in deployed docker swarm container

I have deployed a database using docker swarm

docker stack deploy -c docker-compose.yml app

docker-compose.yml

version: '3.1'
services:
  database:
    image: mongo:latest

I'd like to run a JavaScript file script.js from my host in the deployed database container:

docker exec \
    app_database.1.$(docker service ps -f 'name=app_database.1' app_database -q) \
    mongo script.js

However, the file script.js does not exist in the container (only on my host). How can I run it without restarting the database service?

Solution

  • A script can be sent on stdin to the mongo client.

    Create a script locally:

    print('The mongodb version is: '+db.version())

    Then run

    $ cat script.js | docker exec $container mongo --quiet
The mongodb version is: 3.6.3