Authentication Commands - (Database and Collection Commands)

In MongoDB, authentication is the process of verifying the identity of a user who is trying to access the MongoDB resources. In this page, we will discuss the various MongoDB authentication commands that are available for managing authentication-related tasks in MongoDB.

Syntax

MongoDB authentication commands follow the general syntax:

{
    "authenticationCommand": "<value>"
}

For example, here is the syntax for creating a new user in the admin database:

{
    "createUser": "username",
    "pwd": "password",
    "roles": ["role"]
}

Example

Here is an example of how to create a new user in MongoDB:

{
    "createUser": "john",
    "pwd": "secret",
    "roles": ["readWrite"]
}

This command creates a new user with username "john" and password "secret". It also assigns the readWrite role to the user.

Output

MongoDB authentication commands do not return any output.

Explanation

MongoDB authentication commands are used to manage the authentication and authorization of users to access the MongoDB resources. You can create new users, modify their roles, and delete users by using these commands.

Here are some of the commonly used authentication commands:

• createUser: Creates a new user in MongoDB.
• updateUser: Modifies the roles of an existing user.
• dropUser: Deletes a user from the MongoDB system.
• grantRolesToUser: Grants additional roles to an existing user.
• revokeRolesFromUser: Revokes roles from an existing user.
• authenticationRestrictions: This command allows you to manage IP-based authentication restrictions.

Use

MongoDB authentication commands are used to manage users and assign roles to them to access the MongoDB resources. These commands allow you to enforce stronger security measures for controlling access to MongoDB.

Important Points

• All MongoDB authentication commands require you to have administrative privileges.
• The createUser command requires you to specify the user's pwd or password, which must be a hashed value.
• The updateUser command is used to modify the roles of existing users.
• The dropUser command is used to delete users from the MongoDB system.
• The grantRolesToUser command assigns new roles to an existing user.
• The revokeRolesFromUser command removes roles from an existing user.

Summary

In this page, we discussed the various MongoDB authentication commands that are used to manage the authentication and authorization of users to access the MongoDB resources. We covered the syntax, example, output, explanation, use, important points, and summary of authentication commands. By using these commands, you can control access to MongoDB and enforce stronger security measures for your application.