linux mysql 8 安装

   http://blog.itpub.net/31015730/viewspace-2152272/

https://blog.csdn.net/HaHa_Sir/article/details/80552663

 https://www.digitalocean.com/community/tutorials/how-to-measure-mysql-query-performance-with-mysqlslap

1. tar xvf mysql-8.0.12-1.el7.x86_64.rpm-bundle.tar

修改密码：

ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY 'MyNewPass@123';

mysql的数据文件和二进制文件： /var/lib/mysql/

mysql的配置文件： /etc/my.cnf

mysql的日志文件： /var/log/mysql.log