Just to give an update on this thread: Since HDF 3.0 it is possible to install HDF 3.0 on top of HDP 2.6 or newer and manage HDP and HDF from the same Ambari. To install HDF on top of HDP download and install the HDF management pack and then just add Nifi as another service in Ambari. See https://docs.hortonworks.com/HDPDocuments/HDF3/HDF-3.0.1.1/bk_installing-hdf-and-hdp/content/ch_install-ambari.html. ... View more