//系統
# cat /etc/redhat-release 
CentOS release 6.8 (Final)
# uname -r
2.6.32-642.el6.x86_64

//下載安裝rpm源包
# wget https://dev.mysql.com/get/mysql57-community-release-el6-9.noarch.rpm
# rpm -ivh mysql57-community-release-el6-9.noarch.rpm
//或
# yum localinstall -y mysql57-community-release-el6-9.noarch.rpm
//安裝MySQL
# yum -y install mysql-community-server
//初始的'root'@'localhost'密碼會被儲存在/var/log/mysqld.log
//檢視初始密碼
# grep 'temporary password' /var/log/mysqld.log
//啟動
# /etc/init.d/mysqld start
//登入
# mysql -uroot -p
 

//修改初始密碼
//要注意的是MySQL 5.7預設不能設定簡單密碼，需要包含字母大小寫特殊字元，長度8位或以上
mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'myNewPass18#';

//授權遠端登入，若要精準授權把 % 更換為ip或網段地址即可
mysql>grant all privileges on *.* to 'slave'@'%' identified by 'myNewPass20#';
mysql>flush privileges;