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

<?php#-----The Color of The Three Primary Colors-----# red #FF0000# green #00FF00# blue #0000FF# yellow #FFFF00# black #000000# deepred #330000#------------------Image Title------------------$opt[1] = "--title \"CPU_Load For $hostname / $servicedesc\" ";#-------------1 Minutes Average Load------------$def[1] = "DEF:var1=$RRDFILE[1]:$DS[1]:AVERAGE " ;$def[1] .= "LINE1:var1#FF0000:\"1-Mins \" " ;$def[1] .= "GPRINT:var1:MIN:\"%3.4lg %s$UNIT[1] Min \\t\" ";$def[1] .= "GPRINT:var1:MAX:\"%3.4lg %s$UNIT[1] Max \\t\" ";$def[1] .= "GPRINT:var1:AVERAGE:\"%3.4lg %s$UNIT[1] Average \\n\" ";#-------------15 Minutes Average Load-----------$def[1] .= "DEF:var2=$RRDFILE[2]:$DS[2]:AVERAGE " ;$def[1] .= "LINE2:var2#00FF00:\"15-Mins \" " ;$def[1] .= "GPRINT:var2:MIN:\"%3.4lg Min \\t\" ";$def[1] .= "GPRINT:var2:MAX:\"%3.4lg Max \\t\" ";$def[1] .= "GPRINT:var2:AVERAGE:\"%3.4lg Average \\n\" ";?>

[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,20131026WARN=$2CRIT=$4#1 minutes load,15 minutes loadLoad_One=`uptime | awk -F "[:]" '{print $NF}' | awk -F "[,]" '{print $1}'`Load_Fifteen=`uptime | awk -F "[:]" '{print $NF}' | awk -F "[,]" '{print $3}'`#to obtain Max valueMax=$Load_OneSIGN=`echo $Max $Load_Fifteen | awk '{if($1<$2)print 1;else print 0}'`if [[ $SIGN -ge 1 ]]then Max=$Load_Fifteenfi#get return dataSIGN_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=2elif [[ $SIGN_W -eq 1 ]]then line=`echo "Warning : 1-Mins = $Load_One; 15-Mins = $Load_Fifteen"` RC=1elif [[ $SIGN_O -eq 1 ]]then line=`echo "OK : 1-Mins = $Load_One; 15-Mins = $Load_Fifteen"` RC=0else line=`echo "Unknown"` RC=3fiecho $line \| CPU_Load=$Load_One CPU_Load=$Load_Fifteenexit $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？