Monitoring plugin:
[root@RHEL5 ~]# cd /usr/local/nagios/
[root@RHEL5 nagios]# mkdir customexec
[root@RHEL5 nagios]# vi customexec/check_procs.sh
#!/bin/sh
#Author:zhai_kang,20131024
COUNT=`ps -ef | grep -v grep | grep $2 | wc -l`
PROC=`expr $COUNT - 2`
if [[ $PROC -ge $6 ]]
then
line=`echo "Critical - PROC=$PROC"`
RC=2
elif [[ $PROC -ge $4 ]]
then
line=`echo "Warning - PROC=$PROC"`
RC=1
elif [[ $PROC -ge 1 ]]
then
line=`echo "OK - PROC=$PROC"`
RC=0
else
line=`echo "Unknown - PROC=null"`
RC=3
fi
echo $line \| proc=$PROC
exit $RC
[root@RHEL5 nagios]# chown -R nagios:nagios customexec/
[root@RHEL5 nagios]# chmod +x customexec/check_procs.sh
Set the path to the plugins:
[root@RHEL5 nagios]# vi /etc/nagios/resource.cfg
#Add by Kingcraft
$USER5$=/usr/local/nagios/customexec
Integration of the PNP4Nagios and Nagios:
[root@RHEL5 nagios]# vi /etc/nagios/nagios.cfg
process_performance_data=1
host_perfdata_command=process-host-perfdata
service_perfdata_command=process-service-perfdata
[root@RHEL5 nagios]# vi /etc/nagios/objects/templates.cfg
#Add by Kingcraft
define host{
name host-pnp
register 0
action_url /pnp4nagios/graph?host=$HOSTNAME$
}
define service{
name srv-pnp
register 0
action_url /pnp4nagios/graph?host=$HOSTNAME$&srv=$SERVICEDESC$
}
Define the monitoring command:
[root@RHEL5 nagios]# vi /etc/nagios/objects/commands.cfg
define command{
command_name process-host-perfdata
command_line /usr/bin/perl /usr/local/pnp4nagios/libexec/process_perfdata.pl -d HOSTPERFDATA
}
define command{
command_name process-service-perfdata
command_line /usr/bin/perl /usr/local/pnp4nagios/libexec/process_perfdata.pl
}
define command{
command_name check_procs
command_line $USER5$/check_procs.sh -a $ARG1$ -w $ARG2$ -c $ARG3$
}
Definition monitor file:
[root@RHEL5 nagios]# vi /etc/nagios/Linuxhosts/localhost.cfg
# Define a host for the local machine
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_procs
check_command check_procs!ndo2db!4!6
}
Syntax checking && restart nagios:
[root@RHEL5 nagios]# /usr/local/nagios/bin/nagios -v /etc/nagios/nagios.cfg
[root@RHEL5 nagios]# service nagios restart
Verification:
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