Cacti requires that the following software is installed on your system.
RRDTool 1.0.49 or 1.2.x or greater
MySQL 3.23 or greater, 4.0.20d or greater highly recommended for advanced features
PHP 4.1 or greater, 4.3.6 or greater highly recommended for advanced features
Packages for RPM-based Operating Systems
httpd
php
php-mysql
php-snmp
mysql
mysql-server
net-snmp
Ports for FreeBSD
www/apache2
net/rrdtool
net/net-snmp
www/php4-cgi
lang/php4 (With MySQL and SNMP Support)
databases/mysql323-server