https://blog.csdn.net/u014691098/article/details/78275981
https://www.jianshu.com/p/ab2cb403e9a4
/usr/bin/mysql -uroot -p
GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY '密码' WITH GRANT OPTION;
FLUSH PRIVILEGES;
whereis iptables
lnmp mysql远程无法链接
