参考：https://blog.csdn.net/sevenkoala/article/details/76163853
1，安装环境查看
2，下载安装rpm包
下载地址：https://downloads.mysql.com/archives/community/
https://downloads.mysql.com/archives/get/file/mysql-5.7.22-1.el7.x86_64.rpm-bundle.tar
3，安装
解压
tar -xf mysql-5.7.22-1.el7.x86_64.rpm-bundle.tar
解压后如下rpm安装包
清理mysql-libs
yum remove mysql-libs
安装，安装顺序为common-libs-client-server
rpm -vih mysql-community-common-5.7.22-1.el7.x86_64.rpm rpm -vih mysql-community-libs-5.7.22-1.el7.x86_64.rpm rpm -vih mysql-community-client-5.7.22-1.el7.x86_64.rpm rpm -vih mysql-community-server-5.7.22-1.el7.x86_64.rpm
启动
systemctl start mysqld systemctl status mysqld systemctl enable mysqld
查看自动生成的密码
cat /var/log/mysqld.log | grep password
登录
mysql -uroot -p‘<>fd!vher73Y‘
PS：如果密码有特殊字符需要用引号引起来
修改密码
set password=password(‘password‘);
PS:密码需满足复杂性要求否则修改失败
关于密码复杂度导致修改密码失败解决办法参考
https://blog.csdn.net/hello_world_qwp/article/details/79551789#
原文：https://www.cnblogs.com/minseo/p/10892888.html