# Add a KeyView Service

To use the KeyView processors you must configure a controller service for KeyView. The controller service stores configuration details for KeyView so that you only need to configure KeyView once, rather than for every KeyView processor.

To create the KeyView controller service

1. Click a blank area of the canvas, to de-select all of the components on the canvas.

2. In the Operate Palette, click Configuration .

   The NiFi Flow Configuration dialog box opens.

3. Click the Controller Services tab.

4. Click Create a new controller service .

   The Add Controller Service dialog box opens.

5. In the Source list, click idol.nifi.

6. In the list, click KeyViewFilterServiceImpl, and click ADD.

   The new service is added.

7. Enable the service. At the end of the row for the controller service, click Enable .

   The Enable Controller Service dialog box opens.

8. Click ENABLE and then click CLOSE.
9. Close the NiFi Flow Configuration dialog box.

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