ELK
1. What is ELK? Definition : A powerful suite of open-source tools used to collect, search, analyze, and visualize data in real time. Official Name : Today, it is officially called the Elastic Stack . Core Purpose : Centralized monitoring, log management, security analytics, and search operations. 🏗️ 2. Core Architecture (The 4 Components) 🔹 E – Elasticsearch Role : The Heart (Database & Engine) What it does : Stores and indexes all incoming data. Key Feature : Extremely fast search results because it uses inverted indexing . Format : Stores data as structured JSON text documents . 🔹 L – Logstash Role : The Data Processor (Pipeline) What it does : Gathers data from various sources, cleans/filters it, and pushes it to Elasticsearch. Pipeline Mechanism : Uses an Input → Filter → Output workflow. 🔹 K – Kibana Role : The Face (User Interface) What it does : Connects to Elasticsearch to build live charts, graphs, maps, and dashboards. Common Use : Running search queries and m...