Error
Error Code:
1189
MySQL Error 1189: Replication Network Read Failure
Description
This error indicates that a MySQL replica (slave) encountered a network problem while attempting to read binary log events from its source (master) server. It typically signifies a disruption in the replication stream, preventing the replica from staying up-to-date and causing replication to halt.
Error Message
Net error reading from master
Known Causes
4 known causesNetwork Connectivity Loss
Intermittent or complete loss of network connection between the replica and master servers.
Firewall/Security Group Block
Firewalls or security group rules are blocking the necessary port (e.g., 3306) or IP addresses for replication.
Master Server Unavailability
The master server is down, unreachable, or experiencing high load causing connection timeouts.
DNS Resolution Issues
Problems resolving the master's hostname on the replica server, preventing connection establishment.
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