cacti的简单讲解1
1.前言讲解http://5645432.blog.运维网.com/attachment/201306/24/5635432_137206263298TB.png
RRDtool (Round Robin Database Tool)就是一个强大的绘图的引擎，很多工具例如MRTG都可以调用rrdtool绘图。
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名称与oid （o为object 一个.为一个对象）的对应关系放在MIB库里。
例子：
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2.开虚拟机，安装snmp
配yum
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挂光驱。
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查看里面会用到的命令工具。
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3.例子：本机监控本机(即nms和agent在一台机器上)
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发现好多的mib库，刚才用snmpwalk交谈时，才发现一点点，这取决于agent，要agent开放才能看到，不开放，系统有，也不能看到。
开放在这里：
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