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How to Install and Configure the ELK Stack on Ubuntu 16.04

ELK stands for Elasticsearch, Logstash and Kibana and is a robust open source solution for searching, analyzing and visualizing data. Elasticsearch is a distributed, RESTful search and analytics engine based on Lucene, Logstash is a data processing pipeline for managing events and logs and Kibana is a web application for visualizing data in Elasticsearch. This ELK Stack tutorial should work on other Linux VPS systems as well but was tested and written for an Ubuntu 16.04 VPS.