下载

wget https://dev.mysql.com/get/mysql57-community-release-el7-9.noarch.rpm

安装yum源

rpm -ivh mysql57-community-release-el7-9.noarch.rpm

安装

yum -y install mysql-server

启动

systemctl start mysqld

查看状态

systemctl status mysqld

获取mysql的临时密码

grep ‘temporary password’ /var/log/mysqld.log
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登录

mysql -u root -p
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录入临时密码

更改密码

ALTER USER ‘root’@’localhost’ IDENTIFIED BY ‘Test123!’;
注：密码要有大小写字母，数字，特殊符号，长度不小于8位的组合。不然可能更改密码失败。