Elastic Stack lets you reliably and securely take data from any source, in any format, and search, analyze, and visualize it in real time.

It provides a mechanism to perform centralized logging and lets you track your logs through multiple servers and different kind of sources. It gives you full text search capabilities so you can find any issue happened anywhere in the whole system. It contains four different parts work together in harmony:

Elasticsearch is a distributed, JSON-based search and analytics engine designed for horizontal scalability, maximum reliability, and easy management.

Logstash is a dynamic data collection pipeline with an extensible plugin ecosystem and strong Elasticsearch synergy.

Beats is a platform for lightweight shippers that send data from edge machines to Logstash and Elasticsearch.

Kibana gives shape to your data and is the extensible user interface for configuring and managing all aspects of the Elastic Stack.