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SNMP
COMMAND
REMOTE Script
RRDTool
cacti(php)
展示工具
時間序列數(shù)據(jù)
Nagios
ON——>Off
SNMP
Simple Network Management Protocol
SNMP V1
three Communities in SNMPv1:
read-only
read-write
trap
SNMP V2
SNMP V3
MIB
Management Information Base
OID與名字映射關(guān)系表
標準MIB庫:MIB-II
網(wǎng)絡(luò)中能監(jiān)控的對象:
HIDS NIPS
SNMP UDP 161
IDS
intrusion detection system
IPS
Intrusion Prevention System
監(jiān)控邏輯過程:
public and private SNMP community
SNMP Operations
NMS與Agent邏輯示意圖
net-snmp(Agent)
net-snmp-utils(NMS:command)
監(jiān)控安裝utils
被監(jiān)控端安裝Agent
如果監(jiān)控端要接受trap信息,要安裝兩個包
snmpwalk -v 2c -c public tcp
RRDTools
輪轉(zhuǎn)數(shù)據(jù)庫
RRA:round robin archives
PDP:Primary Data Point
CDP:Consolidation Data Point
解析度:resolution
RRD文件:
DS:(Data Source)數(shù)據(jù)源
CF:MAX,MIN ,AVERAGE,LAST 聚合函數(shù)
unknown
rrd , DS
rrdtool update test.rrd timestamp:32
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