开发nagios插件监控/etc/passwd中文件变化

环境：

nagios客户端：centos6.5

[root@long63 nagios]# uname -r
2.6.32-431.el6.x86_64

[root@long63 nagios]# ifconfig eth0|grep "inet addr"|awk -F '[ :]' '{print $13}'
192.168.200.63　　

nagios服务端：centos6.5 

[root@long62 /]# uname -r
2.6.32-431.el6.x86_64

[root@long62 nagios]# ifconfig eth0|grep "inet addr"|awk -F '[ :]' '{print $13}'
192.168.200.62

操作步骤：

第一步：【客户端】开发脚本，并授权脚本

[root@long63 libexec]# cat check_md5_ps 
#!/bin/sh
PROGNAME=`basename $0`
PROGPATH=`dirname $0`
. $PROGPATH/utils.sh
OriMD5="d6f7ff0f80e82d8288cfb53f1be07808"
CurrMd5=`md5sum /etc/passwd|cut -c 1-32`
if [ "$OriMD5" == "$CurrMd5" ]
  then
    echo "/etc/passwd:OK"
    exit 0
else
    echo "/etc/passwd:flase"
    exit 2
fi

　　

[root@long63 libexec]# chmod 755 check_md5_ps

　　

第二步：【客户端】在nrpe.cfg里面添加一行

command[check_md5]=/usr/local/nagios/libexec/check_md5_ps

　　

第三步：【客户端】重启nrpe

[root@long63 libexec]# ps -ef|grep nrpe
nagios    4258     1  0 08:24 ?        00:00:00 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
root      4262  4133  0 08:25 pts/0    00:00:00 grep nrpe
[root@long63 libexec]# pkill nrpe
[root@long63 libexec]# ps -ef|grep nrpe
root      4265  4133  0 08:25 pts/0    00:00:00 grep nrpe
[root@long63 libexec]# /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
[root@long63 libexec]# ps -ef|grep nrpe
nagios    4267     1  0 08:25 ?        00:00:00 /usr/local/nagios/bin/nrpe -c /usr/local/nagios/etc/nrpe.cfg -d
root      4269  4133  0 08:25 pts/0    00:00:00 grep nrpe

　　

第四步【服务端】services.cfg里面添加服务

define service{
        use                             generic-service
        host_name                       063-client01
        check_command                   check_nrpe!check_md5
        service_description             md5_etc_passwd
        max_check_attempts              3
        normal_check_interval           10
        retry_check_interval            2
        contact_groups                  admins
        notification_options            w,u,c,r
        notification_interval           60
        notification_period             24x7
        check_period                    24x7
}

　　

第五步：【服务端】重启nagios服务

[root@long62 services]# /etc/init.d/nagios checkconfig
Running configuration check... OK.
[root@long62 services]# /etc/init.d/nagios reload
Running configuration check...done.
Reloading nagios configuration...done

结果验证