NetVault Plug-in for MySQL 12.0 - User Guide

Using the plug-in in a Failover Cluster environment

MySQL Server Failover Clustering: an overview

MySQL Failover Clustering (Active/Passive) is designed to provide high-availability for an entire MySQL Server instance. For example, you can configure a MySQL Server instance on one node of a failover cluster to fail over to any other node in the cluster during a hardware failure, OS failure, or a planned upgrade.

A failover cluster is a combination of one or more nodes (hosts) with one or more shared disks. Various resources hosted by the nodes, such as IP, shared storage, and an application — MySQL in this case — can be grouped to create a Clustered Service. A Virtual Service is displayed on the network as if it were a single computer running an application, but provides failover from one node to a different node if the current node becomes unavailable.

Plug‑in for MySQL supports MySQL Server Failover Clustering. Using the failover cluster network name, the plug-in is able to identify the current node that is in control of the MySQL Server Clustered Service and target it for backup.

This topic points out differences between the setup and usage of the plug-in in a Failover Cluster environment vs. a traditional one. It mirrors the topics found in the instructions for the MySQL Standard/Community option.

Installing or upgrading the plug-in

To install the plug-in, complete the steps outlined in the following topics.

Installation prerequisites

The following prerequisites must be met before you install Plug‑in for MySQL in a clustered environment:

IMPORTANT: Support for this feature was tested on Red Hat Enterprise Linux (RHEL) v5.x using the Red Hat Clustering and Clustered Storage Suite, and employing a two-node MySQL (v5.5) cluster configuration with shared storage containing the database data files and logs. If you intend to use clustering in a different configuration, test backups and restores before deploying it in a production environment.