CentOS7使用dnf安装mysql

yum localinstall https://dev.mysql.com/get/mysql57-community-release-el7-11.noarch.rpm

dnf install mysql-community-server

service mysql start

grep 'temporary password' /var/log/mysqld.log

[root@VM_0_13_centos init.d]# grep 'temporary password' /var/log/mysqld.log                                                    
2018-03-09T13:03:32.859149Z 1 [Note] A temporary password is generated for root@localhost: IVXhn:4E3uQ4  

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root123';

ERROR 1819 (HY000): Your password does not satisfy the current policy requirements

 set global validate_password_policy=0; 

set global validate_password_length=1;

ALTER USER 'root'@'localhost' IDENTIFIED BY 'root123';

GRANT ALL PRIVILEGES ON *.* TO 'root'@'%' IDENTIFIED BY 'passwort' WITH GRANT OPTION; //passwort改为mysql登陆密码

FLUSH  PRIVILEGES;