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Set Up Self-Managed X.509 Authentication

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  • Considerations
  • Prerequisites
  • Configure a Project to use a Public Key Infrastructure
  • Add a Database User using Self-Managed X.509 Authentication

Self-managed X.509 certificates provide database users access to the database deployments in your project. Database users are separate from Atlas users. Database users have access to MongoDB databases, while Atlas users have access to the Atlas application itself.

If you enable LDAP authorization, you can't connect to your database deployments with users that authenticate with an Atlas-managed X.509 certificate.

After you enable LDAP authorization, you can connect to your database deployments with users that authenticate with an self-managed X.509 certificate. However, the user's Common Name in their X.509 certificate must match the Distinguished Name of a user who is authorized to access your database with LDAP.

You can have both users that authenticate with self-managed certificates and users that authenticate with Atlas-managed X.509 certificates in the same database.

To use self-managed X.509 certificates, you must have a Public Key Infrastructure to integrate with MongoDB Atlas.

  1. In the Security section of Atlas's left navigation panel, click Advanced.
  2. Toggle Self-Managed X.509 Authentication to ON.

You can provide a Certificate Authority (CA) by:

  • Clicking Upload and selecting a .pem file from your filesystem.
  • Copying the contents of a .pem file into the provided text area.

You can concatenate multiple CAs in the same .pem file or in the text area. Users can authenticate with certificates generated by any of the provided CAs.

When you upload a CA, a project-level alert is automatically created to send a notification 30 days before the CA expires, repeating every 24 hours. You can view and edit this alert from Atlas's Alert Settings page. For more information on configuring alerts, see Configure Alert Settings.


To edit your CA once uploaded, click the Self-Managed X.509 Authentication Settings icon.

  1. In the Security section of the left navigation, click Database Access. The Database Users tab displays.
  2. Click Add New Database User.
Distinguished Name

The user's Common Name (CN) and optionally additional Distinguished Name fields. For more information, see RFC 2253.


CN=Jane Doe,O=MongoDB,C=US

User Privileges

You can assign roles in one of the following ways:

For information on the built-in Atlas privileges, see Built-in Roles.

For more information on authorization, see Role-Based Access Control and Built-in Roles in the MongoDB manual.

←  Configure User Authentication and Authorization with OneLogin VLDAPEncryption at Rest using Customer Key Management →
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