centos6、7在線升級mysql到mysql5.7

centos7對mysql進行在線升級： ①下載mysql源 wget http://dev.mysql.com/get/mysql57-community-release-el7-7.noarch.rpm ②安裝mysql5.7源 yum localinstall -y mysql57-community-release-el7-7.noarch.rpm ③安裝數據庫服務器 yum instal

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