MySQL 8.4 Release Notes
MySQL 组复制作为 MySQL 服务器的一个插件提供；组中的每个服务器都需要配置并安装该插件。本节提供了详细的教程，说明创建至少包含三个成员的复制组所需的步骤。MySQL Group Replication is provided as a plugin for the MySQL server; each server in a group requires configuration and installation of the plugin. This section provides a detailed tutorial with the steps required to create a replication group with at least three members.
Tip
要部署多个 MySQL 实例，您可以使用 InnoDB 集群，它使您能够在 MySQL Shell 中轻松管理一组 MySQL 服务器实例。InnoDB 集群在编程环境中封装了 MySQL 群组复制，使您可以轻松部署 MySQL 实例集群以实现高可用性。此外，InnoDB 集群可以与 MySQL Router 无缝接口，使您的应用程序无需编写自己的故障转移流程即可连接到集群。然而，对于不需要高可用性的类似用例，您可以使用 InnoDB 副本集。MySQL Shell 的安装说明可以在 这里 找到。To deploy multiple instances of MySQL, you can use InnoDB Cluster which enables you to easily administer a group of MySQL server instances in MySQL Shell. InnoDB Cluster wraps MySQL Group Replication in a programmatic environment that enables you easily deploy a cluster of MySQL instances to achieve high availability. In addition, InnoDB Cluster interfaces seamlessly with MySQL Router, which enables your applications to connect to the cluster without writing your own failover process. For similar use cases that do not require high availability, however, you can use InnoDB ReplicaSet. Installation instructions for MySQL Shell can be found here.