Error
Error Code:
3097
MySQL Error 3097: Group Replication Communication Join Failed
Description
This error indicates that a MySQL server failed to join the Group Replication communication group when the `START GROUP_REPLICATION` command was executed. It typically occurs when there are underlying network, configuration, or security issues preventing the server from establishing communication with other members of the replication group.
Error Message
The START GROUP_REPLICATION command failed as there was an error when joining the communication group.
Known Causes
3 known causesNetwork Connectivity Problems
The server attempting to join cannot establish a connection with other members of the Group Replication cluster due to network outages, routing issues, or incorrect IP addresses/hostnames.
Firewall or Security Group Restrictions
A firewall (either OS-level or network security group) is blocking the required communication ports for Group Replication (e.g., 33061 by default) between the joining server and existing group members.
Misconfigured Group Replication Parameters
Essential Group Replication parameters like `group_replication_group_name`, `group_replication_local_address`, or `group_replication_group_seeds` are incorrectly set on the server attempting to join.
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