https://dev.mysql.com/downloads/mysql/5.7.html#downloads

 

下载好上传到服务器，解压后以此安装

libs,client,server三个rpm

rpm -ivh mysql-community-common-5.7.25-1.el7.x86_64.rpm  rpm -ivh mysql-community-libs-5.7.25-1.el7.x86_64.rpm  rpm -ivh mysql-community-client-5.7.25-1.el7.x86_64.rpm  rpm -ivh mysql-community-server-5.7.25-1.el7.x86_64.rpm

去/var/log/mysqld.log找root登录密码

重置密码，最后记得授权root用户权限

 

mysql> set global validate_password_policy=0;Query OK, 0 rows affected (0.00 sec)mysql> set global validate_password_length=1;Query OK, 0 rows affected (0.01 sec)mysql> mysql> mysql> alter user 'root'@'localhost' identified by 'root';Query OK, 0 rows affected (0.00 sec)

 授权root用户权限

mysql> grant all privileges on *.* to 'root'@'%' identified by 'root' with grant option;Query OK, 0 rows affected, 1 warning (0.00 sec)