nagios+流量监控 学习

haoman

　　http://bingdian.blog.iyunv.com/94171/167614
　　http://blog.163.com/mingyan_xiong/blog/static/117815918201051021717367/
　　http://www.itnms.net/discuz/viewthread.php?tid=767&extra=pageD1&page=1
　　nagios 流量监控文档


1、安装snmpd服务
yum -y install net-snmp*


2、安装bc软件包
yum install bc

3、修改snmpd.conf
vi /etc/snmp/snmpd.conf


用下面一段替换原来的
========================================

#       sec.name  source          community
com2sec local     localhost       nagios

####
# Second, map the security names into group names:

#               sec.model  sec.name
group MyRWGroup v1         local
group MyRWGroup v2c        local
group MyRWGroup usm        local
group MyRWGroup usm        initial
group MyROGroup v1         mynetwork
group MyROGroup v2c        mynetwork
group MyROGroup usm        mynetwork

####
# Third, create a view for us to let the groups have rights to:

#           incl/excl subtree                          mask
view all    included  .1                               80

####
# Finally, grant the 2 groups access to the 1 view with different
# write permissions:

#                context sec.model sec.level match  read   write  notif
access MyRWGroup ""      any       noauth    exact  all    none    none


=======================================


4、上传流量监控脚本
上传check_traffic.sh至/usr/local/nagios/libexec

chown nagios.nagios check_traffic.sh
chmod 777 check_traffic.sh


5、测试是否正常采集

/usr/local/nagios/libexec/check_traffic.sh -V 2c -C nagios -H 127.0.0.1 -L

显示如下为正确
========================
List Interface for host 127.0.0.1.

Interface index 1 orresponding to  lo

Interface index 2 orresponding to  bond0

Interface index 3 orresponding to  eth0

Interface index 4 orresponding to  eth1

Interface index 5 orresponding to  sit0
========================


/usr/local/nagios/libexec/check_traffic.sh -V 2c -C nagios -H 127.0.0.1 -I 2 -w 300,350 -c 500,600 -K –B

显示如下为正确
========================
OK - The Traffic In is 356Kbps, Out is 414Kbps, Total is 770Kbps.
The Check Interval is 30s |In=356Kbps;1200;1700;0;0 Out=414Kbps;1500;1800;0;0 Total=770Kbps;2700;3500;0;0 Interval=30s;1200;1800;0;0
========================


6、更改采集数据的权限
chmod 777 /var/tmp/check_traffic*


7、更改nrpe.cfg增加如下行
command[check_traffic]=/usr/local/nagios/libexec/check_traffic.sh -V 2c -C nagios -H 127.0.0.1 -I 2 -w 300,350 -c 500,600 -K –B

重启nrpe程序

ps aux |grep nrpe
nagios    2822  0.0  0.0  4808 1448 ?        Ss   Jun01   0:04 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
root      1123  0.0  0.0  5936  736 pts/2    S+   11:02   0:00 grep nrpe

kill -9 2822

/usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d


8、监控端修改
vi  /usr/local/nagios/etc/services.cfg

#监控网络流量
define service{
        #host_name              WEB
        hostgroup_name          sa-servers
        service_description     check_traffic
        check_command           check_nrpe!check_traffic
        max_check_attempts      4
        normal_check_interval   1
        retry_check_interval    2
        check_period            24x7
        notification_interval   10
        notification_period     24x7
        notification_options    w,u,c,r
        contact_groups          sagroup
        }

重启nagios
service nagios restart