MySQL 8.4 Release Notes
It is first necessary to ensure that the Group Replication
plugin is installed on server s1. If you used
plugin_load_add='group_replication.so'
in the
option file then the Group Replication plugin is already
installed, and you can proceed to the next step. Otherwise, you
must install the plugin manually; to do this, connect to the
server using the mysql client, and issue the
SQL statement shown here:
mysql> INSTALL PLUGIN group_replication SONAME 'group_replication.so';
To check that the plugin was installed successfully, issue
SHOW PLUGINS;
and check the output. It should
show something like this:
mysql> SHOW PLUGINS;
+----------------------------+----------+--------------------+----------------------+-------------+
| Name | Status | Type | Library | License |
+----------------------------+----------+--------------------+----------------------+-------------+
| binlog | ACTIVE | STORAGE ENGINE | NULL | PROPRIETARY |
(...)
| group_replication | ACTIVE | GROUP REPLICATION | group_replication.so | PROPRIETARY |
+----------------------------+----------+--------------------+----------------------+-------------+