下載安裝msyql的repo源

[root@yzj ~]# wget http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm

[root@yzj ~]# yum -y install mysql-community-release-el7-5.noarch.rpm

安裝MySQL
[root@yzj ~]# yum -y install mysql-server

驗證下安裝
[root@yzj ~]# rpm -qa | grep mysql

開啟MySQL服務
[root@yzj ~]# systemctl start mysql

MySQL有個最初的密碼
[root@yzj ~]# grep "password" /var/log/mysqld.log

[root@yzj ~]# mysql -uroot -p‘復制的密碼粘貼進來’

輸入初始密碼後需要更改密碼才能操作數據庫
mysql> ALTER USER ‘root‘@‘localhost‘ IDENTIFIED BY ‘new password‘;

註意：如果密碼設置的簡單會報錯，應為MySQL有設置密碼的規則，請自行百度解決

centos 7 安裝 MySql