1. 卸载原有冲突的依赖包

rpm -e postfix

rpm -e mariadb-libs

1. 按顺序安装

rpm -ivh mysql-community-common-5.7.27-1.el7.x86_64.rpm

rpm -ivh mysql-community-libs-5.7.27-1.el7.x86_64.rpm

rpm -ivh mysql-community-client-5.7.27-1.el7.x86_64.rpm

rpm -ivh mysql-community-server-5.7.27-1.el7.x86_64.rpm

3.查看初始密码

输入：cat /var/log/mysqld.log

 

4.使用初始密码登录

输入：mysql -u root -p

5.登录成功

 

 

6.修改初始密码

输入：alter user user() identified by "YX+5126Mysql";