1. epel源，使用yum安装htop
http://download.fedoraproject.org/pub/epel/5/i386/epel-release-5-4.noarch.rpm
2. mysql-community源
http://repo.mysql.com/mysql-community-release-el7-5.noarch.rpm
yum源笔记
原文：http://www.cnblogs.com/emberd/p/5972821.html
