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NetVault Plug-in for MySQL 4.4 - User Guide

Introducing Dell™ NetVault™ Backup Plug‑in for MySQL Installing and removing the plug-in Configuring the plug-in Backing up data Restoring data Working with native MySQL replication Using the plug-inin a Failover Cluster environment Troubleshooting About Dell

Backing up replication servers

Slave replication servers – Backup types supported include:
Masters replication servers – Backup types supported include:
Incremental and Differential Backups on the slave server will require that you enable the “--log-slave-updates” option in MySQL. This option tells the slave to log the updates performed by its SQL thread to its own Binary Log. For this option to work, the slave must also be started with the “--log-bin” option to enable Binary Logging. Normally, this option is used to chain replication servers; however, it can also be used for Binary Log backups enabling PIT Recovery of a replicated environment without the complications of purging Binary Logs on the master server before they have been applied to the slaves.
Using the Relay Log Index Path option, you can specify the full path name to the Relay Log Index file to include it in backups. By default, the status files, “” and “,” reside in the same location. If you use the Relay Log Index Path option and the default file names and locations are retained, all these files are backed up and restored automatically by the plug-in for a slave replication server.

Restoring replication servers

Using the plug-inin 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 together to create a Clustered Service. A Virtual Service appears on the network as if it were a single computer running an application, but provides failover from one node to another node if the current node becomes unavailable.
*IMPORTANT: In NetVault Backup terminology, a clustered service is accessed by a Virtual Client. The references to Virtual Client in Plug‑in for MySQL are basically references to the Clustered Service in the MySQL Server Failover Cluster environment.
The following sections only offer information on MySQL-specific settings required for the use of this plug-in in a Failover Cluster environment. They do not offer instructions on how to set up NetVault Backup’s Application Cluster Support to administer backups and restores of non-MySQL Server-related data and files. This process is not plug-in-specific, and you can find complete details in the Dell NetVault Backup Administrator’s Guide.
Before you continue, Dell strongly recommends that you review all cluster-related information provided in the Dell NetVault Backup Administrator’s Guide to understand how the following information works in conjunction with MySQL Server Failover Cluster functionality.
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