cacti速成

　　一、环境（RHEL5）
服务器：192.168.152.132（LAMP+rrdtool+cacti）
客户端：192.168.152.128(snmp)
二、安装LAMP
首先做服务器端，Cacti实在LAMP环境基础上的我们要做个LAMP，源码编译太慢的一个mysql就要小半天，所以我们用yum安装
# yum -y install httpd httpd-manual mysql mysql-server php php-mysql php-common php-pdo php-gd
装好后开启服务
#service httpd start
# service mysqld start
#chkconfig httpd on
#chkconfig mysqld on
下满测试下
# vim /var/www/html/index.php //我们看看http和php怎么样

http://blog.运维网.com/attachment/201112/001515691.png

发现有这样的页面说明我们的php就OK了，下面测试下mysql
# cat /var/www/html/index.php

http://blog.运维网.com/attachment/201112/001539100.png

成功！！
目前为止只是个基本条件满足了，真正的才要开始呢。

三、安装Cacti
1）首先要有snmp服务
# yum -y install net-snmp*
#service snmpd start
2）之后就是绘图的工具rrdtool，这个就要编译安装了,rrdtool安装需要 cairo、libxml2、pango库文件支持，所以我们先使用 yum安装这几个库文件
#yum -y install cairo-devel libxml2-devel pango pango-devel
#tar zxvf rrdtool-1.4.4.tar.gz
#cd rrdtool-1.4.4
#./configure --prefix=/usr/local/rrdtool
#make && make install
#ln -s /usr/local/rrdtool/bin/* /usr/local/bin/
# rrdtool //我们输入rrdtool有下面信息rrdtool就安装好了
RRDtool 1.4.4 Copyright 1997-2010 by Tobias Oetiker
Compiled Dec 21 2011 23:36:52
Usage: rrdtool [options] command command_options
Valid commands: create, update, updatev, graph, graphv, dump, restore,
last, lastupdate, first, info, fetch, tune,
resize, xport, flushcached
RRDtool is distributed under the Terms of the GNU General
Public License Version 2. (www.gnu.org/copyleft/gpl.html)
For more information read the RRD manpages


3）Cacti安装
#useradd cacti
#tar -zxvf cacti-0.8.7i.tar.gz -C /var/www/html/
# mysqladmin -u root -p password
Enter password: 123456 //给mysql加上密码123456
mysqladmin: Too few arguments to change password
# mysql -u root -p123456 //输入密码登陆
Welcome to the MySQL monitor. Commands end with ; or \g.
Your MySQL connection id is 17
Server version: 5.0.77 Source distribution

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.
mysql>
在mysql里我们还有些配置
mysql> create database cacti; //创建 cacti数据库
mysql> insert into mysql.user (host,user,password) values ('localhost','cacti',password('cacti123'));
//建立用户 cacti，密码 cacti123
mysql> flush privileges; //重载MySQL授权表
mysql> grant all on cacti.* to cacti@'localhost' identified by 'cacti123'; //把数据库 cacti授权
于用户 cacti
下面我们导入cacti的数据库
#cd /var/www/html/cacti/
#mysql -ucacti -pcacti123 cacti < cacti.sql
#chown -R cacti:cacti rra/ log/ //这里我们要给权限，要不不出图
# vim /var/www/html/cacti/include/config.php //在修改下配置文件
$database_type = &quot;mysql&quot;;
$database_default = &quot;cacti&quot;;
$database_hostname = &quot;localhost&quot;;
$database_username = &quot;cacti&quot;;
$database_password = &quot;cacti123&quot;;
$database_port = &quot;3306&quot;;
$database_ssl = false;
好了，我们在浏览器上输入服务器IP

http://blog.运维网.com/attachment/201112/001616925.png

　　next

http://blog.运维网.com/attachment/201112/001657144.png

finish

http://blog.运维网.com/attachment/201112/001721131.png

初始用户名密码都是admin

http://blog.运维网.com/attachment/201112/001749367.png

　　这里要我们改下密码

http://blog.运维网.com/attachment/201112/001823348.png

下面开始客户端的配置
# rpm -ivh lm_sensors-2.10.7-4.el5.i386.rpm net-snmp-5.3.2.2-7.el5.i386.rpm
安装snmp服务
配置如下：（这里我省略掉了#行和空行）
# vim snmpd.conf
com2sec notConfigUser default public
group notConfigGroup v1 notConfigUser
group notConfigGroup v2c notConfigUser
view systemview included .1.3.6.1.2.1.1
view systemview included .1.3.6.1.2.1.25.1.1
access notConfigGroup &quot;&quot; any noauth exact mib2 none none
view mib2 included .iso.org.dod.internet.mgmt.mib-2 fc
syslocation Unknown (edit /etc/snmp/snmpd.conf)
syscontact Root  (configure /etc/snmp/snmp.local.conf)
pass .1.3.6.1.4.1.4413.4.1 /usr/bin/ucd5820stat
# service snmpd restart

到此就差不多了，我们可以做些检测在服务器上：
snmpwalk -v 2c -c public ServerIP if //用来测试被控对象(serverIP)是否开启了SNMP服务
# snmpwalk -v 2c -c public 192.168.152.128 if
IF-MIB::ifIndex.1 = INTEGER: 1
IF-MIB::ifIndex.2 = INTEGER: 2
IF-MIB::ifIndex.3 = INTEGER: 3
IF-MIB::ifDescr.1 = STRING: lo
IF-MIB::ifDescr.2 = STRING: eth0
IF-MIB::ifDescr.3 = STRING: sit0
IF-MIB::ifType.1 = INTEGER: softwareLoopback(24)
……
snmpwalk -v 2c ServerIP -c public .1.3.6.1.4.1.2021.10.1.3 //查看被控端是否有CPU负载的数据返回


设置 cacti数据采集轮询时间（这个是一定要加的，要不没图）
#crontab –e ，加入如下内容，让 cacti每五分钟采集一次数据
*/5 * * * * env LANG=C /usr/bin/php /var/www/html/cacti/poller.php
# service crond restart
# chkconfig crond on

OK了下面我们加图：

http://blog.运维网.com/attachment/201112/001853177.png

这里有个问题发现rrd目录下面还是root的
我们改下
# ll /var/www/html/cacti/rra
总计 100
-rw-r--r-- 1 root root 94668 12-22 00:09 192_168_152_128_traffic_in_9.rrd
#chown -R cacti:cacti rra
ll rra
总计 100
-rw-r--r-- 1 cacti cacti 94668 12-22 00:09 192_168_152_128_traffic_in_9.rrd
我们看到已经有128 客户端的数据了

出图好慢滴，不过总算出来了，到此就OK了。

http://blog.运维网.com/attachment/201112/002614804.png