轉自：https://segmentfault.com/a/1190000003049498

Step1: 檢測系統是否自帶安裝mysql

# yum list installed | grep mysql

Step2: 刪除系統自帶的mysql及其依賴
命令：

# yum -y remove mysql-libs.x86_64

Step3: 給CentOS新增rpm源，並且選擇較新的源
命令：

# wget dev.mysql.com/get/mysql-community-release-el6-5.noarch.rpm
# yum localinstall mysql-community-release-el6-5.noarch.rpm
 

# yum repolist all | grep mysql
# yum-config-manager --disable mysql55-community
# yum-config-manager --disable mysql56-community
# yum-config-manager --enable mysql57-community-dmr
# yum repolist enabled | grep mysql

Step4:安裝mysql 伺服器
命令：

# yum install mysql-community-server

Step5: 啟動mysql
命令:

# service mysqld start

Step6: 檢視mysql是否自啟動,並且設定開啟自啟動
命令:

# chkconfig --list | grep mysqld
# chkconfig mysqld on

Step7: mysql安全設定
命令：

# mysql_secure_installation