Error
Error Code:
1623
MariaDB Error 1623: Replication Heartbeat Failure
Description
MariaDB Error 1623, also known as ER_SLAVE_HEARTBEAT_FAILURE, indicates that a replication replica (slave) received unexpected or invalid heartbeat data from its master server. This error typically occurs when there's an interruption or corruption in the replication stream, preventing the replica from confirming the master's liveness.
Error Message
Unexpected master's heartbeat data: %s
Known Causes
4 known causesUnstable Network Connection
Intermittent or lost network connectivity between the master and replica can lead to corrupted or missed heartbeat packets, causing the replica to report unexpected data.
Master Server Performance Issues
If the master server is under heavy load or experiencing performance problems, it might fail to send consistent heartbeat data, leading to the replica reporting unexpected patterns.
Software Bug or Version Mismatch
A bug in the MariaDB server software or an incompatibility between different master and replica versions can lead to the replica misinterpreting the master's heartbeat data format.
Firewall or Security Blocking
Firewall rules or security group configurations might be intermittently blocking or altering the replication port traffic, causing the heartbeat data to appear unexpected to the replica.
Solutions
Coming SoonDetailed step-by-step solutions for this error are being prepared. In the meantime, try these general troubleshooting tips:
General Troubleshooting Tips
- Check the error message carefully for specific details
- Review recent changes that might have caused the error
- Search for the exact error code in the official documentation
- Check log files for additional context
- Try restarting the application or service