The ELK Stack on Rocky Linux 9: A Practical Guide

Deploy a production-ready ELK stack on Rocky Linux 9 - from scratch to searchable, centralized logs. This guide walks you through building a 3-node Elasticsearch cluster with transport TLS and built-in authentication, Kibana behind an Apache HTTPS reverse proxy (with SELinux that actually works), Logstash with tuned JVM heap and a Beats/syslog pipeline, and Filebeat shipping system logs from your hosts. ILM retention policies are configured from day one so your disks never fill up silently. Every chapter covers the manual steps first (so you understand what's happening), then shows what automation looks like. Built and tested on Rocky 9 - not generic Linux, not hand-waved cluster formation, not "just disable SELinux."