MongoDB URL Authentication

The connection between Rocket.Chat and MongoDB instance is achieved using a MongoDB connection string URL. MongoDB authentication is done with the username and password.

Adding the following snippet to your .env file does the trick:

MONGO_URL=mongodb://[username:password@]host1[:port1][,...hostN[:portN]][/[defaultauthdb][?options]]

In your container, pass MONGO_URL and MONGO_OPLOG_URL with the right values for connection.

Depending on the password you're using, you might need to escape some characters. Refer to the MongoDB documentation for more information

Your docker-compose.yml file should look like this:

environment:
      - "MONGO_URL=mongodb://rctestuser:mymongopassword@mongo:27017/rocketchat?authSource=admin"
      - "MONGO_OPLOG_URL=mongodb://rctestuser:mymongopassword@mongo:27017/local?authSource=admin"

If you are using docker run, it should look like this:

docker run \                                                                                                                                                                                                                   -e "MONGO_URL=mongodb://rctestuser:mymongopassword@mongo:27017/rocketchat?authSource=admin" \
-e "MONGO_OPLOG_URL=mongodb://rctestuser:mymongopassword@mongo:27017/local?authSource=admin" \
rocketchat/rocket.chat:X.X.X

MongoDB authentication role

If you are using MongoDB authentication, you might also need to add the clusterMonitor role to your user. The clusterMonitor role gives users read-only access to MongoDB monitoring tools. This is a requirement for your instance to be able to use change streams. Change streams allow your workspace to react to real-time changes in data

Execute the following command, replacing the users with that selected for your users:

admin = db.getSiblingDB("admin");
admin.grantRolesToUser('OPLOGUSER',[{ role: "clusterMonitor", db: "admin" }])
admin.grantRolesToUser('ROCKETUSER',[{ role: "clusterMonitor", db: "admin" }])