DevOps Intermediate

What is ELK Stack?

A popular log management platform combining Elasticsearch (search), Logstash (processing), and Kibana (visualization).

The ELK Stack collects, processes, stores, and visualizes log data. Logstash (or Filebeat) collects logs from various sources, transforms them, and sends to Elasticsearch for indexing. Kibana provides dashboards and search interfaces.

Modern variants include the Elastic Stack (adding Beats for lightweight data shipping) and alternatives like Grafana Loki (log aggregation optimized for cost). ELK is the standard for centralized logging in enterprise environments.

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