Create a Relational Migrator User in MongoDB

Connect to your deployment

Log in to the Atlas GUI.

In the Security section of the left navigation, click Database Access.

Click Add New Database User.

In the Authentication Method section of the Add New Database User modal window, select the box labeled Password.

Under Password Authentication, enter the username migrator-service for the new user in the top text field.

Enter the password password for the new user in the lower text field.

Under Database User Privileges, click Built-in Role.

Select Read and write to any database.

Click Add User.

Connect to your deployment using mongosh

You must use an account that can run createUser on the admin and MongoEnterprises databases.

mongosh "mongodb://myadminuser:myadminpassword@localhost:27017/admin"

Create the service user in the admin database for authentication

Run the following command to create a migrator-service user with a password of your choice and readWrite access to the MongoEnterprises database:

use admin
db.createUser(
   { user: "migrator-service",
      pwd: "password",
      roles:[{role: "readWrite" , db:"MongoEnterprises"}]
   }
)

Create the same user in the MongoEnterprises database

use MongoEnterprises
db.createUser(
   { user: "migrator-service",
      pwd: "password",
      roles:[{role: "readWrite" , db:"MongoEnterprises"}]
   }
)