CentOS7下安装MySQL5.7安装与配置

yum安装
https://developer.aliyun.com/article/542583

源码安装
https://www.wanhebin.com/database/mysql/694.html

以上源码安装报错解决方案:
执行
/etc/init.d/mysqld start
之前,先执行
chmod 777 -R /application/mysql-5.7.28/
参考:https://blog.csdn.net/zhou75771217/article/details/82893997

进入数据库后必须立刻修改密码
alter user 'root'@'localhost' identified by '123456';