This article explains the features, advantages, drawbacks, and step‑by‑step installation process of a MySQL high‑availability Percona XtraDB Cluster (PXC), covering configuration, firewall settings, SELinux disabling, node initialization, clustering parameters, and verification commands.
This guide explains the Percona XtraDB Cluster (PXC) architecture, its advantages and limitations, and provides step‑by‑step commands for removing MariaDB, opening firewall ports, disabling SELinux, downloading packages, configuring MySQL, bootstrapping the first node, adding additional nodes, and verifying the cluster status.
This article examines a real‑world Percona XtraDB Cluster (PXC) fault where simultaneous write‑node connection spikes were caused by flow‑control triggered by 100% disk I/O on a shared read node, ultimately traced to slow sorting queries involving a mediumtext column, and offers diagnostic steps and mitigation strategies.
This guide explains how to set up a Percona XtraDB Cluster (PXC) using Docker containers, configure five-node replication with strong consistency, and implement HAProxy as a TCP load balancer to achieve high availability and balanced read/write traffic across the cluster.
This article analyzes common database migration strategies, compares two approaches—master‑slave cut‑over and proxy‑based migration—describes Qunar's internal MMM and Percona XtraDB Cluster (PXC) architectures, and details a step‑by‑step, zero‑downtime migration process from MMM to PXC with practical lessons and best practices.
A large‑scale delete operation in a MySQL PXC cluster caused transaction rollback, table locks, and flow control, leading to service slowdown, and was resolved by redesigning the cleanup mechanism with partitioned tables, stored procedures, and scheduled events.
This article details a real‑world engineering case where a Percona XtraDB Cluster (PXC) was re‑architected to run separate OP and CLM MySQL instances on the same physical server, covering background, problem analysis, design choices, port configuration, directory restructuring, configuration files, step‑by‑step commands, automation script updates, and post‑change verification.
