CentOS7.5使用RPM包安装MySQL5.7.22

　　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#