Enabling Apache Ranger policy for resources

Before you begin

Ensure you have the following details:

• IBM watsonx.data instance.
• Apache Ranger is provisioned.
• The Presto (Java) JDBC URL and credentials in watsonx.data.
• Administrator must add users and groups manually.

Procedure

1. Complete the following steps to create a service in the Ranger.

   a. Log in to Apache Ranger by using the username and password.

   b. The home page lists all the services that are already configured under different resources. To create a new service, click the + icon next to the PRESTO resource.

   c. Provide the following details:

   Apache Ranger policy

   Field	Description
   Username	admin
   Password	UXXXXXXR
   jdbc.url	Provide the JDBC URL.

   d. The service is successfully added in the PRESTO resource list. Click the service name to verify that the default policies are added.

   The testing might fail initially, you can re-test the connection after saving the details since the default policies will be automatically added after saving.

2. Complete the following steps to enable and configure Apache Ranger in watsonx.data.

   a. Log in to watsonx.data console.

   b. From the navigation menu, select Access control.

   c. Click the Integrations tab.

   d. Click Integrate service. The Integrate service window opens.

   e. In the Integrate service window, provide the following details:

   Integrate service

   Field	Description
   Service	Select Apache Ranger.
   URL	The URL of Apache Ranger.
   Username	The admin credentials.
   Password	The admin credentials.
   List resources	Click the link to load the resources that are available in the Apache Ranger server.
   Resources	Select the resource for which the Apache Ranger policy must be enabled.
   Enable data policy within watsonx.data	Select the checkbox to enable data policy along with Apache Ranger policy.

   f. Click Integrate. The Apache Ranger policy is integrated and listed in the Access Control page.

3. Complete the following steps to verify access control :

   a. Log in to watsonx.data instance.

   b. From the navigation menu, click Query workspace.

   c. Execute a simple query. The access denied error appears as currently no policies are defined in the Ranger for the user.

4. Complete the following steps to grant permissions to the user:

   a. Log in to Apache Ranger.

   b. Grant the required permission to the test user.

   c. Scroll down to the bottom, click the Save button.

   d. Log in to watsonx.data instance and execute a query again. The access is allowed for the user after adding policies in the Ranger.

Limitations

• In Apache Iceberg catalog, an error occurs if a policy is not defined for the snapshots views related to the tables in Ranger. You must manually define policies in Apache Ranger to eliminate the error.
• watsonx.data supports only access control feature for Apache Ranger integration in 2.0.0 release.