Chapter 2 Configuring Replication

Table of Contents

2.1 Binary Log File Position Based Replication Configuration Overview

2.2 Setting Up Binary Log File Position Based Replication

2.2.1 Setting the Replication Source Configuration

2.2.2 Creating a User for Replication

2.2.3 Obtaining the Replication Source's Binary Log Coordinates

2.2.4 Choosing a Method for Data Snapshots

2.2.5 Setting Up Replicas

2.2.6 Adding Replicas to a Replication Topology

2.3 Replication with Global Transaction Identifiers

2.3.1 GTID Format and Storage

2.3.2 GTID Life Cycle

2.3.3 GTID Auto-Positioning

2.3.4 Setting Up Replication Using GTIDs

2.3.5 Using GTIDs for Failover and Scaleout

2.3.6 Restrictions on Replication with GTIDs

2.3.7 Stored Function Examples to Manipulate GTIDs

2.4 Changing Replication Modes on Online Servers

2.4.1 Replication Mode Concepts

2.4.2 Enabling GTID Transactions Online

2.4.3 Disabling GTID Transactions Online

2.4.4 Verifying Replication of Anonymous Transactions

2.5 MySQL Multi-Source Replication

2.5.1 Configuring Multi-Source Replication

2.5.2 Provisioning a Multi-Source Replica for GTID-Based Replication

2.5.3 Adding GTID-Based Sources to a Multi-Source Replica

2.5.4 Adding a Binary Log Based Source to a Multi-Source Replica

2.5.5 Starting Multi-Source Replicas

2.5.6 Stopping Multi-Source Replicas

2.5.7 Resetting Multi-Source Replicas

2.5.8 Multi-Source Replication Monitoring

2.6 Replication and Binary Logging Options and Variables

2.6.1 Replication and Binary Logging Option and Variable Reference

2.6.2 Replication Source Options and Variables

2.6.3 Replica Server Options and Variables

2.6.4 Binary Logging Options and Variables

2.6.5 Global Transaction ID System Variables

2.7 Common Replication Administration Tasks

2.7.1 Checking Replication Status

2.7.2 Pausing Replication on the Replica

2.7.3 Skipping Transactions

This section describes how to configure the different types of replication available in MySQL and includes the setup and configuration required for a replication environment, including step-by-step instructions for creating a new replication environment. The major components of this section are:

• For a guide to setting up two or more servers for replication using binary log file positions, Section 2.2, “Setting Up Binary Log File Position Based Replication”, deals with the configuration of the servers and provides methods for copying data between the source and replicas.

• For a guide to setting up two or more servers for replication using GTID transactions, Section 2.3, “Replication with Global Transaction Identifiers”, deals with the configuration of the servers.

• Events in the binary log are recorded using a number of formats. These are referred to as statement-based replication (SBR) or row-based replication (RBR). A third type, mixed-format replication (MIXED), uses SBR or RBR replication automatically to take advantage of the benefits of both SBR and RBR formats when appropriate. The different formats are discussed in Section 5.1, “Replication Formats”.

• Detailed information on the different configuration options and variables that apply to replication is provided in Section 2.6, “Replication and Binary Logging Options and Variables”.

• Once started, the replication process should require little administration or monitoring. However, for advice on common tasks that you may want to execute, see Section 2.7, “Common Replication Administration Tasks”.