ELK

ELK stack

Introduction

"ELK" is the acronym for three open source projects:

• Elasticsearch

• Logstash

• Kibana.

Elasticsearch is a search and analytics engine.

Logstash is a server‑side data processing pipeline that ingests data from multiple sources simultaneously, transforms it, and then sends it to a "stash" like Elasticsearch.

Kibana lets users visualize data with charts and graphs in Elasticsearch.

Elasticsearch is used for a lot of different use cases:

• "classical" full text search

• analytics store

• auto completer

• spell checker

• alerting engine

• and document store as a general purpose.

One of the most popular user case for ELK cluster – is analytics, logs and events gathering with future ability to search, visualize and analyse these time series data.