How It Affects Your App
MySQL 1623 ER_SLAVE_HEARTBEAT_FAILURE indicates that the slave server has not received a heartbeat from the master server within the configured timeout period. This can cause replication to fail, resulting in data loss or inconsistency between the master and slave servers. This can have a significant impact on the application, as it may be unable to access the data it needs or may be unable to update the data correctly. In addition, the application may experience performance issues due to the replication failure.
How To Fix
1. Check the error log for the MySQL 1623 error. This can be done by running the following command:
mysql> SHOW GLOBAL VARIABLES LIKE 'log_error';
2. If the error log is not enabled, enable it by running the following command:
mysql> SET GLOBAL log_error = 'ON';
3. Check the error log again to see if the MySQL 1623 error is still present.4. If the error is still present, check the MySQL configuration file for any incorrect settings. This can be done by running the following command:
mysql> SHOW VARIABLES LIKE '%config_file%';
5. If any incorrect settings are found, correct them and restart the MySQL server.6. Check the error log again to see if the MySQL 1623 error is still present.7. If the error is still present, check the MySQL user privileges for any incorrect settings. This can be done by running the following command:
mysql> SHOW GRANTS FOR 'username';
8. If any incorrect settings are found, correct them and restart the MySQL server.9. Check the error log again to see if the MySQL 1623 error is still present.10. If the error is still present, it is recommended to use an automated database observability tool to monitor and fix the MySQL 1623 in question. This tool can provide real-time insights into the performance and health of the database, as well as alerting when any issues arise. This can help to quickly identify and fix any issues that may be causing the MySQL 1623 error.
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