Elasticsearch is an open source distributed, RESTful search and analytics engine. Its popularity is due to its ease of use, powerful features, and scalability.
Elasticsearch supports RESTful operations.
The elasticsearch bulk API makes it possible to perform many insert/update/index/delete operations in a single API call. This can greatly increase the indexing speed.
Clients supports for bulk API requests
Some of the officially supported clients provide helpers to assist with bulk API requests.
In this tutorial, we will discuss the installation of the Elasticsearch, Logstash and Kibana (ELK Stack) on CentOS/RHEL. The ELK stack is mainly used for centralizing and visualizing logs from multiple servers for log analysis.