If you are experiencing issues with MySQL replication, this guide will help you diagnose and resolve common problems.

Common Issues

Here are some of the most common issues you might encounter with MySQL replication:

  • Replication not starting: Ensure that both the master and slave servers are configured correctly.
  • Replication stalls: Check for slow queries or network issues that might be causing replication to slow down.
  • Data discrepancies: Verify that the master and slave servers have the same data.

Troubleshooting Steps

  1. Check the MySQL error logs: Look for any replication-related errors or warnings.
  2. Verify the replication configuration: Ensure that the server-id, log-bin, and binlog-format are correctly set on both the master and slave.
  3. Check the network connection: Ensure that the network connection between the master and slave is stable and has sufficient bandwidth.
  4. Review the slow queries: Identify any slow queries that might be causing replication to stall.
  5. Use the SHOW SLAVE STATUS command: This command provides valuable information about the replication process, including the last error and the replication delay.

Useful Resources

For more detailed information and troubleshooting steps, please refer to the following resources:

MySQL Server