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Enable SAML authentication on Aiven for OpenSearch®

SAML (Security Assertion Markup Language) is a standard protocol for exchanging authentication and authorization data between an identity provider (IdP) and a Service Provider (SP). SAML enables users to authenticate themselves to a service provider with credentials from a trusted third-party identity provider without the need to create and manage separate user accounts for each service provider.

SAML authentication on Aiven for OpenSearch® can enhance the authentication process for users, providing increased security and a more streamlined experience. With SAML, OpenSearch can delegate authentication and authorization to a trusted external identity provider, reducing security risks and simplifying user management. Additionally, SAML allows for Single Sign-On (SSO) functionality, enabling users to access several OpenSearch instances without the need to log in multiple times.


When you fork an Aiven for OpenSearch® service, any Single Sign-On (SSO) methods configured at the service level, such as SAML, must be explicitly reconfigured for the forked service. SSO configurations are linked to specific URLs and endpoints, which change during forking. Failing to reconfigure SSO methods for the forked service can lead to authentication problems and potentially disrupt user access.


  • Aiven for OpenSearch® version 2.4 or later is required. If you are using an earlier version, upgrade to the latest version.
  • OpenSearch Security management must be enabled on the Aiven for OpenSearch® service.
  • You will need a SAML identity provider (IdP), the Metadata URL, and IdP entity ID.

Configure SAML on IdP

To enable SAML SSO Authentication for Aiven for OpenSearch, you need to configure SAML with an Identity Provider (IdP). As Aiven for OpenSearch is designed to work with various SAML IdPs, the configuration steps may differ depending on your IdP. Refer to your Identity Provider's documentation for detailed instructions on configuring SAML applications.

To enable SAML SSO authentication, make sure you have correctly configured your IdP and have the following two critical parameters:

  • IdP Metadata URL: The IdP metadata URL provides essential metadata about your IdP, including the certificate used for signing the SAML response.
  • IdP Entity ID : The IdP Entity ID is the identifier that the IdP uses to recognize itself. To establish trust between Aiven and OpenSearch, Aiven uses the Entity ID value for OpenSearch. You can find the IdP Entity ID in your Identity Provider's metadata or configuration settings.

Enable SAML SSO authentication via Aiven Console

To enable SAML authentication for your Aiven for OpenSearch service, follow these steps:

  1. On your Aiven for OpenSearch service, select Users from the left sidebar.
  2. In the SAML SSO Authentication section, select Enable SAML.
  3. On the Configure SAML Authentication screen, enter the following details:
    • SSO URL: This is a distinct URL assigned to each Aiven for OpenSearch service and serves as the destination where the Identity Provider (IdP) sends SAML responses after a user has been authenticated successfully. It is a fixed URL that cannot be modified.

    • IdP Metadata URL: Enter the URL of your SAML Identity Provider's (IdP) metadata that Aiven will use to authenticate users.

    • IdP Entity ID: Enter the unique identifier assigned to your Identity Provider (IdP). This identifier assists Aiven in distinguishing between various IdPs.

    • SP Entity ID: Enter a unique identifier the IdP uses to recognize and authenticate Aiven for OpenSearch as the service provider.


      The SP Entity ID can be any arbitrary value defined by the user. Additionally, OpenSearch suggests creating a new application for OpenSearch Dashboards and using the URL of your OpenSearch Dashboards as the SP entity ID.

    • SAML roles key: This is an optional field that allows you to map SAML roles to Aiven for OpenSearch roles.

    • SAML subject key: This is also an optional field that allows you to map SAML subject to Aiven for OpenSearch users.

  4. Select Enable.
  5. In the SAML SSO Authentication section, you can see the SAML method configured with the status set to Enabled.