What is ELK (Elastic search, Logstash, Kibana) ?
ELK stack is a combination of 3 open-source products as below,
- Elasticsearch, a search and analytics engine.
- Logstash, that index the data to Elasticsearch. Logstash has a config file that has input,filter and output section. Config file looks like json file.
- Kibana, a visualization tool which provides a web based GUI for a user. User can design the bar, plot reporting charts.
In order to make Kibana and Elasticsearch interact, you need to make both server up and running. Then logstash will index the data to Elasticsearch.
Then Kibana would read the data from Elasticsearch and visualize it.