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How to Fix MySQL Error – ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY

How to Fix MySQL Error – ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY

MySQL is a popular open-source relational database management system used by many websites and applications. However, like any software, it can encounter errors that need to be resolved. One such error is the ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY error. In this article, we will explore what this error means and how to fix it.

Understanding the ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY Error

The ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY error occurs when a MySQL server is unable to establish a secure connection with its master server due to an SSL certificate verification failure. This error typically occurs in a replication setup where the slave server is trying to connect to the master server.

When the slave server attempts to connect to the master server, it sends a request to verify the SSL certificate. If the master server’s certificate cannot be verified, the slave server throws the ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY error.

Fixing the ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY Error

To fix the ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY error, you can follow these steps:

Step 1: Verify SSL Certificate

The first step is to ensure that the SSL certificate on the master server is valid and can be verified. Check if the certificate is expired or if there are any other issues with it. If necessary, renew or replace the SSL certificate.

Step 2: Update MySQL Configuration

Next, you need to update the MySQL configuration on the slave server to allow it to ignore SSL certificate verification errors. Open the MySQL configuration file (usually located at /etc/my.cnf or /etc/mysql/my.cnf) and add the following line under the [mysqld] section:

slave-skip-ssl

Save the file and restart the MySQL service for the changes to take effect.

Step 3: Restart Replication

After updating the MySQL configuration, you need to restart the replication process. On the slave server, execute the following SQL command:

STOP SLAVE;
START SLAVE;

This will stop and start the replication process, allowing the slave server to reconnect to the master server without SSL certificate verification.

Conclusion

The ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY error can be resolved by verifying the SSL certificate on the master server, updating the MySQL configuration on the slave server to ignore SSL certificate verification errors, and restarting the replication process. By following these steps, you can ensure a secure and uninterrupted replication setup.

Summary

In summary, the ER_SYNC_MASTER_IGNORED_CERTIFICATION_QUERY error in MySQL occurs when a slave server is unable to establish a secure connection with its master server due to SSL certificate verification failure. To fix this error, you need to verify the SSL certificate, update the MySQL configuration to ignore SSL certificate verification errors, and restart the replication process. If you are experiencing this error, consider reaching out to Server.HK for reliable and secure VPS hosting solutions.