<https://dev.to/guthakiran/building-a-cluster-using-elasticsearch-kibana-zookeeper-kafka-and-rsyslog-17ja>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://dev.to/guthakiran/building-a-cluster-using-elasticsearch-kibana-zookeeper-kafka-and-rsyslog-17ja>