mysql -u root -h localhost -p #登陆 use mysql; #打开mysql数据库 select host,user from user where user='root'; #查看user表里的root数据 update user set host='%' where user='root' and host='localhost'; #将host设置为%表示任何ip都能链接mysql,也能够将host指定为某个ip update user set host='localhost' where user='root’; #关闭远程链接,从新设置为localhost GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' WITH GRANT OPTION; #给root进行受权 flush privileges; #刷新权限表,使配置生效