#####################
默认身份验证插件配置：default_authentication_plugin
mysql> show global variables like 'default_authentication_plugin';
+-------------------------------+-----------------------+
| Variable_name | Value |
+-------------------------------+-----------------------+
| default_authentication_plugin | caching_sha2_password |
+-------------------------------+-----------------------+
1 row in set, 1 warning (0.00 sec)
mysql>
