In this blog, I am going to explain the different ways of electing the PRIMARY node in MySQL group replication. Before MySQL 8.0.2, primary election was based on the members UUID, with the lowest UUID elected as the new primary in the event of a failover. From MySQL 8.0.2: We can select the node to [&]

https://www.percona.com/blog/2021/01/11/mysql-group-replication-how-to-elect-the-new-primary-node/