How to enable authentication on MongoDB through Do

Question

I want to spin-up a docker for mongodb:latest but allow only certain user(s) to access certain db(s) (i.e. enable --auth). No one else should access mongodb whatsoever! How should I do this as part of the docker initiation?

BTW, data directory sits on the host by utilising the following command during initiation: -v /my/own/datadir:/data/db.

Answer 1

Better solutions for furthering:
https://blog.madisonhub.org/setting-up-a-mongodb-server-with-auth-on-docker/ https://docs.mongodb.com/v2.6/tutorial/add-user-administrator/

Here's what I did for the same problem, and it worked.

1. Run the mongo docker instance on your server

   docker run -d -p 27017:27017 -v ~/dataMongo:/data/db mongo
   

2. Open bash on the running docker instance.

   docker ps
   

   CONTAINER IDIMAGE COMMAND CREATED STATUS PORTS NAMES

   b07599e429fb mongo "docker-entrypoint..." 35 minutes ago Up 35 minutes 0.0.0.0:27017->27017/tcp musing_stallman

   docker exec -it b07599e429fb bash
   root@b07599e429fb:/#
   

   Reference- https://github.com/arunoda/meteor-up-legacy/wiki/Accessing-the-running-Mongodb-docker-container-from-command-line-on-EC2

3. Enter the mongo shell by typing mongo.

   root@b07599e429fb:/# mongo
   

4. For this example, I will set up a user named ian and give that user read & write access to the cool_db database.

   > use cool_db
   
   > db.createUser({
       user: 'ian',
       pwd: 'secretPassword',
       roles: [{ role: 'readWrite', db:'cool_db'}]
   })
   

   Reference: https://ianlondon.github.io/blog/mongodb-auth/ (First point only)

5. Exit from mongod shell and bash.

6. Stop the docker instance using the below command.

   docker stop mongo
   

7. Now run the mongo docker with auth enabled.

   docker run -d -p 27017:27017 -v ~/dataMongo:/data/db mongo mongod --auth
   

   Reference: How to enable authentication on MongoDB through Docker? (Usman Ismail's answer to this question)

8. I was able to connect to the instance running on a Google Cloud server from my local windows laptop using the below command.

   mongo <ip>:27017/cool_db -u ian -p secretPassword
   

   Reference: how can I connect to a remote mongo server from Mac OS terminal

Answer 2

Just dropping a .js file into the entry point init folder works for this

e.g. entrypoint.js

var db = connect("mongodb://localhost/admin");

db.createUser(
    {
        user: "yourAdminUserName",
        pwd: "yourAdminPassword",
        roles: [ { role: "userAdminAnyDatabase", db: "admin" } ]
    }
)

docker-compose.yml:

db:
  image: mongo:3.2
  volumes:
   - /my/own/datadir:/data/db
   - ../mongo-entrypoint:/docker-entrypoint-initdb.d

Doing the rest by hand or more of the same works.

If you want to you can also drop a .sh file into the init folder to clean up the files so they are not laying around: zz-cleanup.sh.

Answer 3

a. You can use environment variables via terminal:

$ docker run -d --name container_name \
      -e MONGO_INITDB_ROOT_USERNAME=admin \
      -e MONGO_INITDB_ROOT_PASSWORD=password \
      mongo

b. You can use environment variables in your docker stack deploy file or compose file for versions 3.4 through 4.1.

As it is explained on the quick reference section of the official mongo image set MONGO_INITDB_ROOT_USERNAME and MONGO_INITDB_ROOT_PASSWORD in your yaml file:

mongo:
    image: mongo
    environment:
      MONGO_INITDB_ROOT_USERNAME: admin
      MONGO_INITDB_ROOT_PASSWORD: password

docker-entrypoint.sh file in mongo image checks for the existence of these two variables and sets --auth flag accordingly.

c. You can also use docker secrets.

MONGO_INITDB_ROOT_USERNAME and MONGO_INITDB_ROOT_PASSWORD is set indirectly by docker-entrypoint.sh from MONGO_INITDB_ROOT_USERNAME_FILE and MONGO_INITDB_ROOT_PASSWORD_FILE variables:

mongo:
    image: mongo
    environment:
        - MONGO_INITDB_ROOT_USERNAME_FILE=/run/secrets/db_root_username
        - MONGO_INITDB_ROOT_PASSWORD_FILE=/run/secrets/db_root_password
    secrets:
      - db_root_username
      - db_root_password

docker-entrypoint.sh converts MONGO_INITDB_ROOT_USERNAME_FILE and MONGO_INITDB_ROOT_PASSWORD_FILE to MONGO_INITDB_ROOT_USERNAME and MONGO_INITDB_ROOT_PASSWORD.

You can use MONGO_INITDB_ROOT_USERNAME and MONGO_INITDB_ROOT_PASSWORD in your .sh or .js scripts in docker-entrypoint-initdb.d folder while initializing database instance.

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

This last method is not in the reference docs, so it may not survive an update.

Answer 4

The Dockerfile for the official mongo image is here. The default command is mongod but you can override to add the --auth switch assuming user's are already configured.

docker run -d .... mongodb:latest mongod --auth

If the user has to be created then you need to volume mount a startup script into /entrypoint.sh to replace the default startup script and then have that script create users and start mongo with the auth switch.

docker run -d .... -v $PWD/my_custom_script.sh:/entrypoint.sh mongodb:latest

Answer 5

use this images to fix:

With docker-compose.yml

services:
  db:
    image: aashreys/mongo-auth:latest
    environment:
      - AUTH=yes
      - MONGODB_ADMIN_USER=admin
      - MONGODB_ADMIN_PASS=admin123
      - MONGODB_APPLICATION_DATABASE=sample
      - MONGODB_APPLICATION_USER=aashrey
      - MONGODB_APPLICATION_PASS=admin123
    ports:
      - "27017:27017"
     // more configuration

• aashreys/mongo-auth - Docker Hub
• aashreys/docker-mongo-auth: Easily setup authentication on Docker's Official MongoDB image.

Answer 6

If you take a look at:

• https://github.com/docker-library/mongo/blob/27f2722bb2ebd26354321adc8c3f19f7958529e1/3.4/Dockerfile
• https://github.com/docker-library/mongo/blob/27f2722bb2ebd26354321adc8c3f19f7958529e1/3.4/docker-entrypoint.sh

you will notice that there are two variables used in the docker-entrypoint.sh:

• MONGO_INITDB_ROOT_USERNAME
• MONGO_INITDB_ROOT_PASSWORD

You can use them to setup root user. For example you can use following docker-compose.yml file:

mongo-container:
  image: mongo:3.4.2
  environment:
      # provide your credentials here
      - MONGO_INITDB_ROOT_USERNAME=root
      - MONGO_INITDB_ROOT_PASSWORD=rootPassXXX
  ports:
    - "27017:27017"
  volumes:
      # if you wish to setup additional user accounts specific per DB or with different roles you can use following entry point
    - "$PWD/mongo-entrypoint/:/docker-entrypoint-initdb.d/"
  # no --auth is needed here as presence of username and password add this option automatically
  command: mongod

Now when starting the container by docker-compose up you should notice following entries:

...
I CONTROL  [initandlisten] options: { net: { bindIp: "127.0.0.1" }, processManagement: { fork: true }, security: { authorization: "enabled" }, systemLog: { destination: "file", path: "/proc/1/fd/1" } }
...
I ACCESS   [conn1] note: no users configured in admin.system.users, allowing localhost access
...
Successfully added user: {
    "user" : "root",
    "roles" : [
        {
            "role" : "root",
            "db" : "admin"
        }
    ]
}

To add custom users apart of root use the entrypoint exectuable script (placed under $PWD/mongo-entrypoint dir as it is mounted in docker-compose to entrypoint):

#!/usr/bin/env bash
echo "Creating mongo users..."
mongo admin --host localhost -u USER_PREVIOUSLY_DEFINED -p PASS_YOU_PREVIOUSLY_DEFINED --eval "db.createUser({user: 'ANOTHER_USER', pwd: 'PASS', roles: [{role: 'readWrite', db: 'xxx'}]}); db.createUser({user: 'admin', pwd: 'PASS', roles: [{role: 'userAdminAnyDatabase', db: 'admin'}]});"
echo "Mongo users created."

Entrypoint script will be executed and additional users will be created.