操作系统:CentOS release 5.7 (Final)
软件包：cacti-0.8.7i.tar.gz，net-snmp-5.7.1.tar.gz，php-5.3.10.tar.gz，mysql-5.1.58-linux-i686-glibc23.tar.gz，httpd-2.2.22.tar.gz
相关阅读：
1.安装apache
1.1 cd /usr/local/src
1.2 wget
1.3 tar zvxf httpd-2.2.22.tar.gz
1.4 cd httpd-2.2.22/srclib/apr
1.5 ./configure --prefix=/usr/local/apr
1.6 make && make install
1.7 cd ../apr-util
1.8 ./configure --prefix=/usr/local/apr-util --with-apr=/usr/local/apr
1.9 make && make install
1.10 ./configure --prefix=/usr/local/apache --enable-so --with-apr=/usr/local/apr --with-apr-util=/usr/local/apr-util/bin --enable-mods-shared=all --with-mpm=worker --enable-cache --enable-disk-cache --enable-mem-cache --enable-file-cache
1.11 make && make install
1.12 vi /usr/local/apache/conf/httpd.conf修改以下参数：
#
# Listen: Allows you to bind Apache to specific IP addresses and/or
# ports, instead of the default. See also the <VirtualHost>
# directive.
#
# Change this to Listen on specific IP addresses as shown below to
# prevent Apache from glomming onto all bound IP addresses.
#
#Listen 12.34.56.78:80
Listen 9999（yourport）
#
# ServerName gives the name and port that the server uses to identify itself.
# This can often be determined automatically, but we recommend you specify
# it explicitly to prevent problems during startup.
#
# If your host doesn't have a registered DNS name, enter its IP address here.
#
ServerName 192.168.0.181:9999(yourhost:yourport)
1.13 执行 /usr/local/apache/bin/apachectl start，在浏览器输入:yourport，如果显示“it works！”说明安装成功。
2.安装snmp
2.1 centos自带有snmp，cacti需要php支持snmp的扩展，本人不知在编译php时如何引用系统的snmp，所以采取手动编译安装snmp的方法
2.2 wget wget
2.3 tar zvxf net-snmp-5.7.1.tar.gz
2.4 cd net-snmp-5.7.1
2.5 ./configure
2.6 make && make install
2.7 修改配置， vi /etc/snmp/snmpd.conf
1、com2sec notConfigUser default public
改为：com2sec notConfigUser （你想监控的那台机器的IP） public
2、access notConfigGroup "" any noauth exact systemview none none
改为：access notConfigGroup "" any noauth exact all none none
3、#view all included .1 80
将前面的 # 注释 去掉。
2.8 复制编译安装的snmp的库到系统库：cp /usr/local/lib/libnetsnmp.so.30 /usr/lib，否则会报libnetsnmp.so.30 not found
2.9 service snmpd restart
3.使用yum install 安装rrdtool，zlib，freetype，libpng，jpeg，libxml，gd，等。如yum install zlib。查看系统是否安装zlib的命令rpm -qa|grep zlib，卸载zlib命令rpm -e zlib。