https://dev.mysql.com/downloads/
因為我是下載mysql5.7 要在歸檔包裡查詢
選擇對應的安裝版本：
下載如下rpm包，下載地址：https://downloads.mysql.com/archives/community/
mysql-community-common-5.7.20-1.el7.x86_64.rpm
mysql-community-libs-5.7.20-1.el7.x86_64.rpm
mysql-community-client-5.7.20-1.el7.x86_64.rpm
依次安裝即可
rpm -ivh mysql-community-common-5.7.20-1.el7.x86_64.rpm &&rpm -ivh mysql-community-libs-5.7.20-1.el7.x86_64.rpm && rpm -ivh mysql-community-client-5.7.20-1.el7.x86_64.rpm
安裝後如下：
