使用官方yum仓库
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wget https://dev.mysql.com/get/mysql80-community-release-el7-4.noarch.rpm
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yum install mysql80-community-release-el7-4.noarch.rpm
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生成yum源缓存
yum makecache
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yum install -y mysql-community-server
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启动mysqld 服务端
systemctl start mysqld
查看是否启动
systemctl status mysqld