masterha_secondary_check

Aikesheng Open Source Community

Mar 22, 2021 · Databases

Understanding and Testing the MHA masterha_secondary_check Script for MySQL Network Fault Tolerance

This article explains the purpose, usage, and return codes of the MHA masterha_secondary_check Perl script, demonstrates how to simulate network failures with iptables, and presents a series of tests that verify the script’s ability to detect master reachability and handle various error conditions.