Jun 14, 2019 · Databases

Automatic Member Rejoin in MySQL Group Replication (MGR): Features, Configuration, and Monitoring

Starting with MySQL 8.0.16, Group Replication introduces an automatic member rejoin feature that allows expelled or disconnected nodes to attempt reconnection without manual intervention, configurable via the group_replication_autorejoin_tries variable, with monitoring via Performance Schema and trade‑offs compared to expel timeout.

Auto RejoinGroup ReplicationPerformance Schema

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Automatic Member Rejoin in MySQL Group Replication (MGR): Features, Configuration, and Monitoring