livy.server.session.factory = yarn
livy.impersonation.enabled = true
livy.server.auth.type = kerberos
livy.server.launch.kerberos.principal = livy/hostname@EXAMPLE.COM
livy.server.launch.kerberos.keytab = /opt/livy/livy.keytab
livy.server.auth.kerberos.principal = HTTP/hostname@EXAMPLE.COM
livy.server.auth.kerberos.keytab = /opt/livy/HTTP.keytab