centos7安装mysql5.7

下载mysql源包 exec：wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm 安装mysql源 exec：yum localinstall mysql57-community-release-el7-8.noarch.rpm notice：如果需要安装5.6版本，可以修改vim /etc/yum.re

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