That was it! I didn't have nifi.remote.input.http.enabled= true. I was going off of the link below where it says "By default, it is set to true." I guess I misread it to mean that if nothing was specifically entered there then it would default to true.
https://docs.cloudera.com/HDPDocuments/HDF3/HDF-3.1.2/bk_administration/content/site_to_site_properties.html Anyway, thank you, greatly, for the help. -- Sent from: http://apache-nifi-users-list.2361937.n4.nabble.com/