How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on CentOS 7
The Elastic Stack — formerly known as the ELK Stack — is a collection of open-source software produced by Elastic which allows you to search, analyze, and visualize logs generated from any source in any format, a practice known as centralized logging.
ELK v6.5.2 on CentOS 7, Digital Ocean tutorial
How To Install Elasticsearch, Logstash, and Kibana (Elastic Stack) on CentOS 7 
Tags: ELK