@KUnew Sounds like you have nifi and Elasticsearch installed.  For a Proof Of Concept the single node simple installs should work fine.  There are no further requirements.  A Cloudera or Hortonworks cluster is not required.  However, if you intend to have multiple instances of Nifi and one or more Elasticsearch Master and Data nodes I would highly recommend using Hortonworks HDF with Ambari to manage the NiFi and Elasticsearch installation & configuration.   I have created the Elk Management Pack for HDF 3.x which allows install of 6.3.2 or 7.4.2 Elasticsearch, Logstash, Kibana, Filebeat, & Metricbeat.  You can find it on my GitHub:   https://github.com/steven-dfheinz/dfhz_elk_mpack   I also have some articles here specifically about how to install the Elk Management Pack.  Just search up elasticsearch here in the community Articles section.   It is very easy to install ambari, the management pack, and further install NiFi and ELK.     If this reply answers your question,  please mark it as a Solution. ... View more