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1,停止mysql5.6 systemctl stop mysqld 2,先下载mysql5.7 wget https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm 3,安装 mysql57-community-release-el7-11.noarch.rpm sudo rpm -Uvh mysql57-community-release-el7-11.noarch.rpm 4,查看可以被安装的mysql列表 yum repolist all | grep mysql 5,更新mysql sudo yum update mysql-server -y 6,登录时有可能报这样的错:ERROR 2002 (HY000): Can‘t connect to local MySQL server through socket ‘/var/lib/mysql/mysql.sock‘ (2), ~~~ sudo chown -R openscanner:openscanner /var/lib/mysql ~~~ 然后,重启服务: service mysqld restart 7,注意事项 原先的root账号密码无需更改,原先的数据库会自动导入到mysql5.7中, MySQL内置了ngram全文检索插件,用来支持中文分词,并且对MyISAM和InnoDB引擎有效。