ITPUB

Nov 26, 2015 · Operations

How to Prevent Split‑Brain in HA Clusters: Arbitration, Fencing, and Practical Strategies

This article explains what split‑brain is in high‑availability systems, compares arbitration and fencing methods, evaluates client‑routing options without fencing devices, discusses data‑loss risks during failover for PostgreSQL and MySQL, and provides concrete implementation guidance using Pacemaker and Corosync.