下载地址如下：
CentOS:https://wiki.centos.org/Download
nginx:http://nginx.org/en/download.html
apache:http://httpd.apache.org/download.cgi
apache:http://archive.apache.org/dist/httpd/
tomcat:http://tomcat.apache.org/
mysql:http://mirrors.sohu.com/mysql/
php:http://php.net/downloads.php
php:http://mirrors.sohu.com/php/
keepalived:http://www.keepalived.org/download.html
cacti:http:///downloads/
zabbix:http://www.zabbix.com/download
phpMyAdmin:https://www.phpmyadmin.net/files/
pcre：http://www.pcre.org/
libiconv:http://ftp.gnu.org/pub/gnu/libiconv/
freetype:http://download.savannah.gnu.org/releases/freetype/
epel:http://mirrors.ustc.edu.cn/epel/
atomic:https://www.atomicorp.com/channels/atomic/
wordpress:https://cn.wordpress.org/releases/
AppServ: https://www.appserv.org/en/
Sysbench: https:///akopytov/sysbench
