Error
Error Code:
1218
MySQL Error 1218: Failed Source Connection
Description
Error 1218 indicates that a MySQL server failed to establish a connection with its designated source. This issue commonly arises in replication topologies or when one MySQL instance attempts to link to another, pointing to underlying network, firewall, or configuration problems preventing communication.
Error Message
Error connecting to source: %s
Known Causes
4 known causesNetwork Connectivity Problems
The MySQL server cannot reach the source host due to network outages, incorrect routing, or DNS resolution failures.
Firewall Restrictions
A firewall on either the source or client server, or an intermediary network device, is blocking the required port (default 3306) for MySQL communication.
Mismatched Source Configuration
The configured source host, port, or user credentials in the MySQL server's replication or connection settings are incorrect or outdated.
Source Server Unreachable
The target source MySQL server is not running, is overloaded, or is otherwise inaccessible at the specified address and port.
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