Building a Production-Style Cluster with Production-Style Cluster with Percona XtraDB Cluster, ProxySQL, and Keepalived

High Availability for MySQL: Building a Production-Style Cluster with Percona XtraDB Cluster, ProxySQL, and Keepalived is a practical, step-by-step lab book for database practitioners who want to build a self-healing MySQL 8 high-availability platform from the ground up. This book walks you through a complete five-server HA architecture using Percona XtraDB Cluster for synchronous data replication, ProxySQL for intelligent connection routing, and Keepalived for a floating Virtual IP failover layer. The goal is simple: keep MySQL available even when a database node or proxy node fails, without requiring application connection-string changes.