1-创建用户create user 用户名@’%’ identified by ‘密码’;create user 用户名@’localhost’ identified by ‘密码’; 2-授权grant all privileges on *.* to ‘用户名’@’%’ identified by ‘123123’; —-所有数据库的所有权限grant all privileges on 数据库名称.* to ‘用户名’@’%’ with grant option; —–单个数据库的所有权限 3-生效命令flush privileges; 4-创建数据库create database testDB; 5-忘记密码处理方式修改登陆设置:# vim /etc/my.cnf —-进入配置文件 文件最后面添加 skip-grant-tables :wq —保存退出重启服务:systemctl stop mysqld.service systemctl start mysqld.service 登录并修改MySQL的root密码 mysql -u root -p alter user ‘用户名’@’localhost’ IDENTIFIED BY ‘密码’; alter user ‘用户名’@’%’ IDENTIFIED BY ‘密码’;flush privileges;修改登陆设置:# vim /etc/my.cnf —-进入配置文件 删除 skip-grant-tables :wq —保存退出重启服务:systemctl stop mysqld.service systemctl start mysqld.service 参考地址:http://netsite.win/2018/06/13/mysql/mysql8%E5%88%9B%E5%BB%BA%E7%94%A8%E6%88%B7%E5%8F%8A%E6%8E%88%E6%9D%83-%E8%BF%9C%E7%A8%8B%E8%BF%9E%E6%8E%A5-%E5%9D%91/ https://blog.csdn.net/yi247630676/article/details/80352655