針對centos7安裝mysql，提示“No package mysql-server available.”錯誤，解決方法如下：
Centos 7 comes with MariaDB instead of MySQL. MariaDb is a open source equivalent to MySQL and can be installed with yum -y install mariadb-server mariadb. If you must have mysql you need to add the mysql-community repo sudo rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm and then you can install MySQLl like you normally do
（1）CentOS7帶有MariaDB而不是MySQL，MariaDB和MySQL一樣也是開元的數據庫，您可以使用yum -y install mariadb-server mariadb命令安裝
（2）如果必須要安裝MySQL，首先必須添加mysql社區repo通過輸入命令：sudo rpm -Uvh http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm，最后使用像安裝MySQL的常規方法一樣安裝mysql： yum install mysql mysql-server mysql-libs mysql-server
轉自http://blog.csdn.net/lixiang987654321/article/details/53134162