本文主要是介绍ubuntu下cacti安装配置，希望对大家解决编程问题提供一定的参考价值，需要的开发者们随着小编来一起学习吧！
一、cacti概述
1. cacti是用php语言实现的一个软件，它的主要功能是用snmp服务获取数据，然后用rrdtool储存和更新数据，当用户需要查看数据的时候用rrdtool生成图表呈现给用户。因此，snmp和rrdtool是cacti的关键。Snmp关系着数据的收集，rrdtool关系着数据存储和图表的生成。
2. Mysql配合PHP程序存储一些变量数据并对变量数据进行调用，如：主机名、主机ip、snmp团体名、端口号、模板信息等变量。
3. snmp抓到数据不是存储在mysql中，而是存在rrdtool生成的rrd文件中（在cacti根目录的rra文件夹下）。rrdtool对数据的更新和存储就是对rrd文件的处理，rrd文件是大小固定的档案文件（Round Robin Archive），它能够存储的数据笔数在创建时就已经定义。
二、系统环境
1、Linux ubuntu-server 3.5.0-23-generic x86_64
三、apache、mysql、php安装
参考：http://developer.51cto.com/art/201110/299303.htm
四、cacti安装
enadmin@ubuntu-server:~$ apt-get update enadmin@ubuntu-server:~$ sudo apt-get install cacti
通过这种方式安装会显示依赖包
Reading package lists... Done Building dependency tree Reading state information... Done The following extra packages will be installed:libperl5.14 libphp-adodb libsensors4 libsnmp-base libsnmp15 mysql-server php5-snmp rrdtool snmp Suggested packages:php5-ldap php5-adodb lm-sensors snmp-mibs-downloader The following NEW packages will be installed:cacti libperl5.14 libphp-adodb libsensors4 libsnmp-base libsnmp15 mysql-server php5-snmp rrdtool snmp 0 upgraded, 10 newly installed, 0 to remove and 113 not upgraded. Need to get 4,205 kB/4,574 kB of archives. After this operation, 12.6 MB of additional disk space will be used. Do you want to continue [Y/n]? yGet:1 http://mirrors.163.com/ubuntu/ precise-security/main php5-cli amd64 5.3.10-1ubuntu3.13 [3,051 kB] Get:2 http://mirrors.163.com/ubuntu/ precise-security/main php5-mysql amd64 5.3.10-1ubuntu3.13 [76.6 kB] Get:3 http://mirrors.163.com/ubuntu/ precise-security/main php5-gd amd64 5.3.10-1ubuntu3.13 [38.8 kB] Get:4 http://mirrors.163.com/ubuntu/ precise-security/main libapache2-mod-php5 amd64 5.3.10-1ubuntu3.13 [3,137 kB] Get:5 http://mirrors.163.com/ubuntu/ precise-security/main php5-common amd64 5.3.10-1ubuntu3.13 [1,774 kB] Get:6 http://mirrors.163.com/ubuntu/ precise-security/main libsnmp-base all 5.4.3~dfsg-2.4ubuntu1.2 [217 kB] Get:7 http://mirrors.163.com/ubuntu/ precise-security/main libsnmp15 amd64 5.4.3~dfsg-2.4ubuntu1.2 [1,334 kB] Get:8 http://mirrors.163.com/ubuntu/ precise-security/main mysql-server all 5.5.38-0ubuntu0.12.04.1 [11.4 kB] Get:9 http://mirrors.163.com/ubuntu/ precise-security/main php5-snmp amd64 5.3.10-1ubuntu3.13 [11.0 kB] Get:10 http://mirrors.163.com/ubuntu/ precise-security/main snmp amd64 5.4.3~dfsg-2.4ubuntu1.2 [162 kB] Fetched 9,813 kB in 16s (594 kB/s) Preconfiguring packages ... Package configuration
下面是安装过程截图
选中Apache2以后，接下来再会安装一些软件
View Code
网页安装
在安装完上面内容以后，请进入以下地址http://your-ip/cacti/再安装
安装snmpd
enadmin@ubuntu-server:~$ sudo apt-get install snmpd Reading package lists... Done Building dependency tree Reading state information... Done The following NEW packages will be installed:snmpd 0 upgraded, 1 newly installed, 0 to remove and 146 not upgraded. Need to get 76.0 kB of archives. After this operation, 267 kB of additional disk space will be used. Get:1 http://mirrors.163.com/ubuntu/ precise-security/main snmpd amd64 5.4.3~dfsg-2.4ubuntu1.2 [76.0 kB] Fetched 76.0 kB in 0s (97.6 kB/s) Preconfiguring packages ... Selecting previously unselected package snmpd. (Reading database ... 59498 files and directories currently installed.) Unpacking snmpd (from .../snmpd_5.4.3~dfsg-2.4ubuntu1.2_amd64.deb) ... Processing triggers for ureadahead ... ureadahead will be reprofiled on next reboot Processing triggers for man-db ... Setting up snmpd (5.4.3~dfsg-2.4ubuntu1.2) ... update-rc.d: warning: snmpd stop runlevel arguments (1) do not match LSB Default-Stop values (0 1 6) * Starting network management services: enadmin@ubuntu-server:~$
测试snmp的服务
enadmin@ubuntu-server:~$ snmpwalk -v 1 -c public localhost .1.3.6.1.2.1.1.1.0 iso.3.6.1.2.1.1.1.0 = STRING: "Linux ubuntu-server 3.5.0-23-generic #35~precise1-Ubuntu SMP Fri Jan 25 17:13:26 UTC 2013 x86_64" enadmin@ubuntu-server:~$
查看localhost的监控画面
在配置完毕上述内容以后，正常情况下应该可以看到cacti对于自身localhost的的默认监控了。我们进入到Graphs->Tree Mode->Default Tree->Host:Localhost当中查看对于localhost的监控，如下图所示。
常见问题解决
问题1：cacti无法正常生成图片
在cacti当中看不到图片，通过Turn Off Graph Debug Mode.提示报错如下：
'/var/lib/cacti/rra/localhost_users_6.rrd': No such file or directory
解决方法：
这是因为权限问题原因导致的，系统无法生成相应的rrd文件，需要我们人工手动生成，具体操作方法如下：
Console->System Utilities->Rebuild Poller Cache
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