如何取远程linux主机的流量和tcp连接数

会计考友

　　取远程linux主机的流量和tcp连接数
　　首先配置远程的linux主机的snmp.conf文件（可以理解为客户端）
　　vi /etc/snmp/snmp.conf
　　只要修改几处地方即可
　　####
: v% I6 P$ f, \  r, X; g, Z　　# First, map the community name "public" into a "security name"
　　# sec.name source community
: C/ `8 N$ @" U" j3 V! E; g　　com2sec notConfigUser *.*.*.* username #*.*.*.* 是你远程监控机器的IP username是可信任的团体名
　　####
　　# Second, map the security name into a group name:
7 m$ h7 H* r0 a* y% O　　# groupName securityModel securityName
　　group notConfigGroup v1 notConfigUser
　　group notConfigGroup v2c notConfigUser
　　####
　　# Third, create a view for us to let the group have rights to:
　　# Make at least snmpwalk -v 1 localhost -c public system fast again.
5 V: U, Q6 X  d8 ^8 M# w　　# name incl/excl subtree mask(optional)
) z6 E4 Y1 A3 _, v$ W8 q　　view systemview included .1.3.6.1.2.1.1
　　view systemview included .1.3.6.1.2.1.2
' Z# _8 @( d' A. A8 _; D7 C　　view systemview included .1.3.6.1.2.1.25.1.1
  d- Q. @; X$ K) V7 l" R% E* u　　view all included .1
. v! r0 c6 n5 f% [) @+ d　　####
　　# Finally, grant the group read-only access to the systemview view.
　　# group context sec.model sec.level prefix read write notif
  C5 k3 X1 i0 a$ _　　#access notConfigGroup "" any noauth exact mib2 none none
) W. h- D0 X2 |. }) W. ?　　access notConfigGroup "" any noauth exact all none none
　　# Here is a commented out example configuration that allows less
' n8 l( [3 p6 V9 p% Z* D, K* |　　# restrictive access.
　　# YOU SHOULD CHANGE THE "COMMUNITY" TOKEN BELOW TO A NEW KEYWORD ONLY
　　# KNOWN AT YOUR SITE. YOU *MUST* CHANGE THE NETWORK TOKEN BELOW TO
　　# SOMETHING REFLECTING YOUR LOCAL NETWORK ADDRESS SPACE.

会计考友

　　## sec.name source community
　　com2sec notConfigUser default username #username是可信任的团体名
　　com2sec *.*.*.0 *.*.*.*/24 username #username是可信任的团体名 *.*.*.* 是你远程监控机器的IP
　　## group.name sec.model sec.name
　　group MyRWGroup any local
0 g/ _( m* v4 Q9 u! U　　group MyROGroup any mynetwork
　　group notConfigUser any zcom
8 I0 y- _9 A6 P7 v( v( I; q9 H0 r　　#
　　#group MyRWGroup any otherv3user
　　#...
$ ]" m( t2 L+ ~, N: a7 C1 K# T　　## incl/excl subtree mask
　　view all included .1 80
　　## -or just the mib2 tree-
( p! V7 ?4 u3 A- C) A- u5 }　　view mib2 included .iso.org.dod.internet.mgmt.mib-2 fc
　　## context sec.model sec.level prefix read write notif
　　access MyROGroup "" any noauth 0 all none none
, l+ S$ |& s3 l1 O% P　　access MyRWGroup "" any noauth 0 all all all
; d5 U" a" N: P2 V　　修改完毕后保存退出
　　/etc/init.d/snmpd restart
　　监控端（可以理解为server端）
) j& e, T1 n, g* @, ]　　# snmpwalk -v 2c -c username *.*.*.* system
* K$ y0 D6 O1 x) K/ X" f% J　　检查是否能取道远程的系统数据
　　# snmpwalk -v 2c -c username *.*.*.*|grep IF-MIB::ifInOctets.1 查看你的网卡流量
　　在你的mrtg的文件里写入IF-MIB::ifInOctets.1 mrtg是不会取道流量的
　　# mib2c IF-MIB::ifInOctets.1 转化为mib值，结果类似于
　　1.3.6.1.2.1.2.2.1.10
, r2 D* B, w& r( H( ]3 m　　在你的mrtg文件中写进类似于这样的一句话
　　Target[*.*.*.*_BW_LAN]: 1:username@*.*.*.* #username是可信任的团体名 *.*.*.* 是你远程监控机器的IP
. j2 G) m" z8 Z  h8 `. m　　Title[*.*.*.*_BW_LAN]: 202.102.251.133
' k- l. d. w0 r6 T2 n; u/ T　　PageTop[*.*.*.*_BW_LAN]: *.*.*.*。