ControlDrawingEffect(一)

Custom drawing templates：
[root@RHEL5 ~]# cd /usr/local/pnp4nagios/share/templates/
[root@RHEL5 templates]# vi check_cpu.php

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[root@RHEL5 templates]# chown nagios:nagios *

Monitoring plugin：
[root@RHEL5 ~]# tail -n 2 /etc/nagios/resource.cfg
#Add by Kingcraft
$USER5$=/usr/local/nagios/customexec

[root@RHEL5 ~]# vi /usr/local/nagios/customexec/check_cpu.sh

#!/bin/sh
#Author:zhai_kang,20131026
WARN=$2
CRIT=$4
#1 minutes load,15 minutes load
Load_One=`uptime | awk -F "[:]" '{print $NF}' | awk -F "[,]" '{print $1}'`
Load_Fifteen=`uptime | awk -F "[:]" '{print $NF}' | awk -F "[,]" '{print $3}'`
#to obtain Max value
Max=$Load_One
SIGN=`echo $Max $Load_Fifteen | awk '{if($1<$2)print 1;else print 0}'`
if [[ $SIGN -ge 1 ]]
then
        Max=$Load_Fifteen
fi
#get return data
SIGN_C=`echo $CRIT $Max | awk '{if($1<$2)print 1;else print 0}'`
SIGN_W=`echo $WARN $Max | awk '{if($1<$2)print 1;else print 0}'`
SIGN_O=`echo 0 $Max | awk '{if($1<$2)print 1;else print 0}'`
if [[ $SIGN_C -eq 1 ]]
then
        line=`echo "Critical : 1-Mins = $Load_One; 15-Mins = $Load_Fifteen"`
        RC=2
elif [[ $SIGN_W -eq 1 ]]
then
        line=`echo "Warning : 1-Mins = $Load_One; 15-Mins = $Load_Fifteen"`
        RC=1
elif [[ $SIGN_O -eq 1 ]]
then
        line=`echo "OK : 1-Mins = $Load_One; 15-Mins = $Load_Fifteen"`
        RC=0
else
        line=`echo "Unknown"`
        RC=3
fi
echo $line \| CPU_Load=$Load_One CPU_Load=$Load_Fifteen
exit $RC

Define the monitoring command：
[root@RHEL5 ~]# vi /etc/nagios/objects/commands.cfg

define command{
        command_name    check_cpu
        command_line    $USER5$/check_cpu.sh -w $ARG1$ -c $ARG2$
        }

Definition monitor file：

[root@RHEL5 ~]# vi /etc/nagios/Linuxhosts/localhost.cfg

define host{
        use                     linux-server,host-pnp
        host_name               Monitor
        alias                   Monitor
        address                 172.17.10.4
        }
define service{
        use                             local-service,srv-pnp
        host_name                       Monitor
        service_description             check_cpu
        check_command                   check_cpu!4!6
        }

Restart：
[root@RHEL5 ~]# service nagios restart

Verification：

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• 若在所出图像中显示Warning与Critical的警界线，则监控插件与对应的出图模板应如何改？

文章名称：ControlDrawingEffect(一)
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