Managing Users and Roles in MongoDB

1. Introduction

Managing users and roles in MongoDB is essential for securing your database and controlling access to various features and data. This lesson covers the key concepts and step-by-step processes for effectively managing users and roles.

2. Key Concepts

3. Creating Users

To create a user, you can use the `db.createUser()` method. Here's how:

db.createUser({
    user: "myUser",
    pwd: "myPassword",
    roles: [ { role: "readWrite", db: "myDatabase" } ]
});
        

This command creates a user named `myUser` with a password and assigns the `readWrite` role on `myDatabase`.

4. Assigning Roles

To assign roles to an existing user, use the `db.grantRolesToUser()` method:

db.grantRolesToUser("myUser", [ { role: "dbAdmin", db: "myDatabase" } ]);
        

This command assigns the `dbAdmin` role to `myUser` on `myDatabase`.

5. Viewing Users

You can view all users in the current database using:

db.getUsers();
        

This command returns a list of all users and their roles.

6. Best Practices

• Always use strong, unique passwords for each user.
• Apply the principle of least privilege: only assign the roles that are necessary.
• Regularly review user roles and permissions.
• Consider using authentication mechanisms like LDAP or Kerberos for larger applications.

7. FAQ