centos7 安裝 mysql 、修改默認端口號並開放端口

下載mysql源安裝包 wget http://dev.mysql.com/get/mysql57-community-release-el7-8.noarch.rpm 安裝mysql源  yum localinstall mysql57-community-release-el7-8.noarch.rpm 檢查mysql源是否安裝成功 yum repolist enabled | grep "m

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