I have set up and conducted successful inital testing.  My issue now is properly setting up kerberos authentication within Livy.   I have a superuser account and will be adding proxyuser group & server entries for this account in core-site.xml.   What isn't clear is how exactly I set up the kerberos entries in livy.conf.  Taking the following example section: # Authentication support for Livy server # Livy has a built-in SPnego authentication support for HTTP requests  with below configurations. livy.server.auth.type = kerberos livy.server.auth.kerberos.principal = HTTP/server@DOMIAN.COM livy.server.auth.kerberos.keytab = /path/to/http.keytab livy.server.launch.kerberos.principal =  superuser/server@DOMAIN.COM livy.server.launch.kerberos.keytab = /path/to/superuser.keytab   1) Is the HTTP principal required or can I simply repeat the superuser principal & keytab? 2) If the HTTP principal is needed, how do you go about and create it under CDH 6.x?   ... View more