MongoDB employs Role-Based Access Control (RBAC) to govern access to a MongoDB system. A user is granted one or more roles that determine the user's access to database resources and operations. Outside of role assignments, the user has no access to the system.
MongoDB does not enable access control by default. You can enable
authorization using the
--auth or the
security.authorization setting. Enabling internal
authentication also enables
Once access control is enabled, users must authenticate themselves.
Roles never limit privileges. If a user has two roles, the role with the greater access takes precedence.
To revoke a role from a user, use the
Roles can impose authentication restrictions on users, requiring them to connect from specified source and destination IP address ranges.
For more information, see Authentication Restrictions.
A privilege consists of a specified resource and the actions permitted on the resource.
A resource is a database, collection, set of collections, or the cluster. If the resource is the cluster, the affiliated actions affect the state of the system rather than a specific database or collection. For information on the resource documents, see Resource Document.
A role can include one or more existing roles in its definition, in which case the role inherits all the privileges of the included roles.
A role can inherit privileges from other roles in its database. A role created
admin database can inherit privileges from roles in any database.
You can view the privileges for a role by issuing the
command with the
showBuiltinRoles fields both set to
You can assign roles to users during the user creation. You can also update existing users to grant or revoke roles. For a full list of user management methods, see User Management
A user assigned a role receives all the privileges of that role. A user can have multiple roles. By assigning to the user roles in various databases, a user created in one database can have permissions to act on other databases.
The first user created in the database should be a user administrator who has the privileges to manage other users. See Enable Access Control.
MongoDB provides built-in roles that provide set of privileges commonly needed in a database system.
If these built-in-roles cannot provide the desired set of privileges, MongoDB provides methods to create and modify user-defined roles.