Configuring Apache Zeppelin How to configure Apache Zeppelin. IntroductionZeppelin uses Apache Shiro to provide authentication and authorization (access control). Configuring Zeppelin cachingImprove cache management and server response for Zeppelin.Configuring LivyLivy high availability supportLivy supports high availability. If there is more than one Livy server in the CDP cluster, high availability is automatically enabled by Cloudera Manager by setting the livy.server.recovery.mode property to ha and by including the list of Zookeeper servers in the Livy configuration.Configure User Impersonation for Access to HiveThis section describes how to configure Apache Zeppelin user impersonation for Apache Hive. Configure User Impersonation for Access to PhoenixThis section describes how to configure Apache Zeppelin user impersonation for Apache Phoenix. Enabling Access Control for Zeppelin ElementsThis section describes how to restrict access to specific Apache Zeppelin elements. Shiro Settings: ReferenceThis section provides additional information about the Shiro settings used to configure Apache Zeppelin security. shiro.ini ExampleThe following example shows a minimum set of shiro.ini settings for authentication and access control for a Zeppelin deployment that uses Active Directory.