1、安装所需组件

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   yum install perl perl-devel perl-CPAN bc net-snmpd net-snmp-utils -y

   perl -MCPAN -eshell  & cpan> install Bundle::LWP

   编译安装nrpe（参考教程：http://2860664.blog.51cto.com/2850664/1559056）

以下是被监控端设置

2、下载check_traffic.s脚本

   下载地址：https://codeload.github.com/cloved/check_traffic/zip/v1.3.11

   解压文件后，上传check_traffic.sh到/usr/local/nagios/libexec

   chmod +x check_traffic.sh

   chown nagios.nagcmd check_traffic.sh

3、设置snmp参数

   vi /etc/snmp/snmpd.conf

com2sec notConfigUser  被监控端IP  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
syslocation Unknown (edit /etc/snmp/snmpd.conf)
syscontact Root  (configure /etc/snmp/snmp.local.conf)

service snmpd start

chkconfig snmpd on

4、在被监控端测试脚本

   cd /usr/local/nagios/libexec

   ./check_traffic.sh -V 2c -C public -H 192.168.1.247 -I 2 -w 1200,1500 -c 1700,1800 -K -B

OK - The Traffic In is 0.72KB, Out is 0.60KB, Total is 1.32KB. The Check Interval is 43s |In=0.72KB;1200;1700;0;0 Out=0.60KB;1500;1800;0;0 Total=1.32KB;2700;3500;0;0 Interval=43s;1200;1800;0;0

   其中红色为被监控端的IP地址。

4、vi /usr/local/nagios/etc/nrpe.cfg  添加

command[check_traffic]=/usr/local/nagios/libexec/check_traffic.sh -V 2c -C public -H 192.168.1.247 -I 2 -w 1200,1500 -c 1700,1800 -K -B

   

以下是nagios主机的设置

5、服务器端测试

 

/usr/local/nagios/libexec/check_nrpe -H 192.168.1.247 -c check_traffic

OK - The Traffic In is 0.48KB, Out is 0.11KB, Total is 0.59KB. The Check Interval is 28s |In=0.48KB;1200;1700;0;0 Out=0.11KB;1500;1800;0;0 Total=0.59KB;2700;3500;0;0 Interval=28s;1200;1800;0;0

vi /usr/local/nagios/etc/nagios.cfg  添加

   cfg_file=/usr/local/nagios/etc/objects/nginx.cfg

6、touch /usr/local/nagios/etc/objects/nginx.cfg

   vi /usr/local/nagios/etc/objects/nginx.cfg  （注意修改被监控端的IP）内容如下  

****************************************我是分割线************************************   

define host{
           use             linux-server
          host_name     nginx
          alias         nginx
          address       被监控端IP
        }
define service{
        use                      generic-service
        host_name             nginx
        service_description     check-swap
        check_command        check_nrpe!check_swap
               }
define service{
        use                      generic-service
        host_name             nginx
        service_description     check-load
       check_command         check_nrpe!check_load
               }
define service{
        use                      generic-service
        host_name             nginx
       service_description     check-disk
       check_command        check_nrpe!check_sda1
               }
define service{
        use                      generic-service
        host_name             nginx
       service_description     check-users
       check_command        check_nrpe!check_users
               }
define service{
        use                    generic-service
        host_name           nginx
        service_description  otal_procs
        check_command     check_nrpe!check_total_procs
}
define service{
        use                             generic-service         ; Name of service template to use
        host_name                       nginx
        service_description             PING
        check_command                   check_ping!100.0,20%!500.0,60%
        }
define service{
    use                     generic-service
    host_name               nginx
    service_description     nginx_status
    check_command           check_nrpe!check_nginx!
        notifications_enabled           0
        }
define service{
    use                     generic-service
    host_name               nginx
    service_description     network_traffic
    check_command           check_nrpe!check_traffic!
        notifications_enabled           0
}

****************************************我也是分割线************************************

报错信息

7、nagios服务器报错

Unknown - Read or Write File /var/tmp/check_traffic_192.168.1.247_2__itnms.hist_dat_64 Error with user uid=501(nagios) gid=503(nagcmd) groups=502(nagios),503(nagcmd).

解决方法：chmod nagios.nagcmd /var/tmp/check_traffic_192.168.1.247_2__itnms.hist_dat_64

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