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You can get seamless single sign-on connectivity, enabling Power BI reports and dashboards to update from on-premises data, by configuring your On-premises data gateway with Kerberos. The On-premises data gateway facilitates single sign-on SSO using DirectQuery, which it uses to connect to on-premises data sources.
When a user interacts with a DirectQuery report in the Power BI Service, each cross-filter, slice, sorting, and report editing operation can result in queries executing live against the underlying on-premises data source.
When single sign-on is configured for the data source, queries execute under the identity of the user interacting with Power BI that is, through the web experience or Power BI mobile apps. Thereby, each user sees precisely the data for which they have permissions in the underlying data source — with single sign-on configured, there is no shared data caching across different users. A query that runs with SSO consists of three steps, as shown in the following diagram. SSO for Oracle is not enabled yet, but is under development and coming soon.
Here are additional details about those steps: The gateway service process impersonates the mapped local user, opens the connection to the underlying database and sends the query.
The gateway does not need to be installed on the same machine as the database. The Kerberos constrained delegation configuration steps outlined in this document are the same just applied based on the service SID, instead of domain account. The following links to patches and upgrades from SAP may be useful. If the underlying database server and gateway are not configured properly for Kerberos Constrained Delegation , you may receive the following error message: And the technical details associated with the error message may look like the following: The result is that the because of insufficient Kerberos configuration, the gateway could not impersonate the originating user properly, and the database connection attempt failed.
Several items must be configured in order for Kerberos Constrained Delegation to work properly, including Service Principal Names SPN and delegation settings on service accounts. This release of the On-premises data gateway supports an in-place upgrade, as well as settings take-over of existing gateways. Pour que cette modification compte fonctionne correctement, vous avez deux options: For this account change to work correctly, you have two options: If you started with a previous version of the On-premises data gateway, follow precisely all five steps in sequence including running the gateway configurator in step 3 described in the following article: The Kerberos Constrained Delegation configuration steps outlined in this article are the same as that configuration they are simply applied based on the service SID, instead of domain account.
While it is technically possible for a domain administrator to temporarily or permanently allow rights to someone else to configure SPNs and Kerberos delegation, without requiring domain admin rights, that's not the recommended approach. In the following section, the configuration steps necessary for Pre-requisite 3 in detail.
To properly configure the system, we need to configure or validate the following two items: Note that you must be a domain administrator to perform those two configuration steps. The following sections describe these steps in turn. First, determine whether an SPN was already created for the domain account used as the gateway service account, but following these steps: In the search result, right-click on the gateway service account and select Properties.
If there is no Delegation tab on the Properties dialog, you can manually create an SPN on that account which adds the Delegation tab that is the easiest way to configure delegation settings. To set the SPN for the gateway service account for that machine in this example, you would run the following command: With that step completed, we can move on to configuring delegation settings.
The second configuration requirement is the delegation settings on the gateway service account. There are multiple tools you can use to perform these steps. In this article, we'll use Active Directory Users and Computers , which is a Microsoft Management Console MMC snap-in that you can use to administer and publish information in the directory, and available on domain controllers by default.
You can also enable it through Windows Feature configuration on other machines. We need to configure Kerberos Constrained Delegation with protocol transiting. With constrained delegation, you must be explicit with which services you want to delegate to — for example, only your SQL Server or your SAP HANA server will accept delegation calls from the gateway service account. To learn how to configure those data source server SPNs, please refer to technical documentation for the respective database server.
You can also look at the blog post that describes What SPN does your app require? In the following steps we assume an on-premises environment with two machines: Given those example names and settings, the configuration steps are the following: The dialog will look similar to the following if you checked Expanded. From the list of policies under User Rights Assignment , select Impersonate a client after authentication. Right-click and open the Properties for Impersonate a client after authentication and check the list of accounts.
After all the configuration steps outlined earlier in this article have been completed, you can use the Manage Gateway page in Power BI to configure the data source, and under its Advanced Settings , enable SSO, then publish reports and datasets binding to that data source.
Cette configuration ne fonctionne pas dans la plupart des cas. This configuration will work in most cases. However, with Kerberos there can be different configurations depending on your environment. Si le rapport ne se charge toujours pas, vous devez contacter votre administrateur de domaine pour approfondir la question. If the report still won't load, you'll need to contact your domain administrator to investigate further.
Earlier in this article, we discussed switching the gateway from a local service account to run as a domain account, using the On-premises data gateway user interface. Here are the steps necessary to do so. Launch the On-premises data gateway configuration tool. Click Change account to start the guided walk-through, as shown in the following figure. For more information about the On-premises data gateway and DirectQuery , check out the following resources: