MySQL replication is a powerful feature that allows you to copy data from one MySQL server to another. This guide will help you get started with configuring MySQL replication.
Prerequisites
Before you begin, make sure you have the following:
- A MySQL server running.
- Root access to both the master and slave servers.
- The
mysqlclient installed on your machine.
Step-by-Step Guide
1. Set Up the Master Server
First, you need to configure the master server to enable binary logging.
mysql> grant replication slave on *.* to 'replication_user'@'%' identified by 'replication_password';
mysql> flush privileges;
mysql> change master to master_host='master_server_ip', master_user='replication_user', master_password='replication_password', master_log_file='mysql-bin.000001', master_log_pos=4;
mysql> start slave;
2. Set Up the Slave Server
Next, configure the slave server to connect to the master server.
mysql> change master to master_host='master_server_ip', master_user='replication_user', master_password='replication_password', master_log_file='mysql-bin.000001', master_log_pos=4;
mysql> start slave;
3. Verify Replication
To verify that replication is working, you can check the status on both the master and slave servers.
mysql> show slave status\G
You should see the following lines in the output:
Slave_IO_Running: Yes
Slave_SQL_Running: Yes
4. Troubleshooting
If you encounter any issues, check the error logs on both the master and slave servers. You can find the logs in the /var/log/mysql/ directory on most Linux systems.
For more detailed troubleshooting steps, please refer to our MySQL Replication Troubleshooting Guide.