MySQL 8：Authentication plugin 'caching_sha2_password' cannot be loaded

安装MySQL 8，用root用户在MySQL Workbench连接数据库是报错：

Authentication plugin 'caching_sha2_password' cannot be loaded: dlopen(/usr/local/mysql/lib/plugin/caching_sha2_password.so, 2): image not found

查询mysql库的user表：

mysql>use mysql; 
mysql>select user, host, plugin from user\G; 
*************************** 2. row *************************** 
                 user: root 
                 host: % 
               plugin: caching_sha2_password 

root用户使用caching_sha2_password插件加密，原因就是客户端没有caching_sha2_password插件。

修改root密码加密方式为：mysql_native_password

ALTER USER 'root'@'%' IDENTIFIED WITH mysql_native_password BY 'password';