去MysqL官网下载最新版的5.7MysqL-5.7.19-linux-glibc2.12-x86_64.tar.gz

tar -zxvf 解压

mvMysqL-5.7.19-linux-glibc2.12-x86_64 /usr/local/MysqL/ 移动到这个目录下

cd/usr/local/MysqL/MysqL-5.7.19-linux-glibc2.12-x86_64

mkdir data 新建数据目录

groupadd MysqL

useradd -g MysqL MysqL

vi

wget

https://cdn.mysql.com//Downloads/MySQL-5.7/mysql-community-server-5.7.19-1.el7.x86_64.rpm

5.7 的安装失败，怎么设置都不成功，放弃了，去看我安装5.6的吧