nagios通过SNMP服务的网络监控，当达到某个设定的值，那么就报警
http://bbotte.blog.51cto.com/6205307/1403997 nagios服务端和客户端的安装配置
http://bbotte.blog.51cto.com/6205307/1583484 Nagios结合pnp4nagios图形监控
借助于网上提供的资源，做下面的操作
https://github.com/cloved/check_traffic/releases 下载最新版本的shell脚本
下载check_traffic.sh V1.4.0，在附件已经上传
#被监控端/客户端
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cd /usr/local/nagios/libexec/ #下载此脚本
chmod 755 check_traffic.sh
# yum install net-snmp-utils net-snmp net-snmp-libs bc -y #因脚本里面需要用到bc
# mv /etc/snmp/snmpd.conf /etc/snmp/snmpd.conf.bak
# vim /etc/snmp/snmpd.conf #配置snmp服务
# cat /etc/snmp/snmpd.conf|grep -v ^\# |sed
'/^$/d'
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
""
any
noauth exact
all
none none
view
all
included .1 80
view mib2 included .iso.org.dod.internet.mgmt.mib-2 fc
access notConfigGroup
""
any
noauth exact
all
none none
syslocation Unknown (edit /etc/snmp/snmpd.conf)
syscontact Root <root@localhost> (configure /etc/snmp/snmp.local.conf)
dontLogTCPWrappersConnects yes
# service snmpd start
# snmpd -L #测试snmp配置文件
Error opening specified endpoint
""
Server Exiting with code 1
# ./check_traffic.sh -V 2c -C public -H localhost -L -vvvv #测试本机的网口，主要的数值是index后面的数字
List Interface for host localhost.
Interface index 1 orresponding to lo
Interface index 2 orresponding to eth0
Interface index 3 orresponding to eth1
# ./check_traffic.sh -V 2c -C public -H 127.0.0.1 -I 2 -w 2000,3000 -c 3001,5000 -K –B
OK - It is the first time of this plugins to run,
or
some
data file lost. We will get the data from the next time.
# ll /var/tmp/check_traffic_127.0.0.1_2__itnms.hist_dat_64 #检查权限，所属用户和组都为nagios
#此脚本有帮助说明，用-h查看，上面 -I 2 即是对eth0做监控，-w 2000,3000是流入2000K/s，或发送3000K/s会提示warning
# -V 1|2c|3
# Specify the version of snmp
#
# -C Community
# Specify the Community
#
# -H host
# Specify the host
#
# -6 Use 64 bit counter, ifHC* instead of if*.
#
# -r Use Range instead of single value
in
warning
and
critical Threshold;
#
# -I interface
# Specify the interface
#
# -N interface name
# Specify the interface name
#
# -L List
all
Interfaces on specify host
#
# -B/b Switch to B/s
or
bps, default is -b, bps
#
# -K/M Switch to K
or
M (bsp,B/s), default is -K
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#被监控端/客户端
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vim
/usr/local/nagios/etc/nrpe
.cfg
command
[check_traffic]=
/usr/local/nagios/libexec/check_traffic
.sh -V 2c -C public -H 127.0.0.1 -I 2 -w 2000,4000 -c 4000,6000 -K -B
# service nrped restart
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#监控端/服务端
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vim
/usr/local/nagios/etc/objects/linuxhost
.cfg
define host{
use mylinux-server,service-pnp
host_name 192_168_23_2
alias
server tongji
address 192.168.23.2
}
vim
/usr/local/nagios/etc/objects/linux13
.cfg
define service{
use linux-service,service-pnp
host_name 192_168_1_2
service_description check network
check_command check_nrpe!check_traffic
}
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完事把nagios重启一下，刚开始会搜集数据，如下面的提示 大概2分钟就能看到图形界面了，
PNP4Nagios Version 0.6.24
Please check the documentation for information about the following error.
XML file "/usr/local/pnp4nagios/var/perfdata/192_168_1_2/check_network.xml" not found. <a href="http://docs.pnp4nagios.org/faq/6">Read FAQ online</a>
file [line]:
application/models/data.php [312]:
back
在nagios页面会看到
此图会有in，out的网卡流量，可以在服务器ifstat验证
此外，http://nagios.manubulon.com/ 这个网站也值得一看，里面有 http://nagios.manubulon.com/check_snmp_int.pl 脚本，同样可以实现对网络的监控
