To configure the optional Livy server (for features such as user identity propagation from Zeppelin to Spark), on an Ambari-managed cluster navigate to Spark > Configs, Custom livy-conf category. Add livy.superusers as a property, and set it to the Zeppelin service account.

	Note
	HDP 2.5 does not support direct use of Livy REST APIs. Livy can be accessed through the %livy interpreter in Zeppelin notebooks.