Monitor the CPU usage of Windows servers using Nagios (SNMP Mode)

We recommend that you use SNMP to monitor the performance of WIndows servers, but the configuration is cumbersome. It would be more convenient to use NSCLIENT ++ plug-in, provided that the plug-in needs to be installed on a specific monitored server. In case the application affects the server itself, it is not good. Therefore, I have been searching for the SNMP method for monitoring Windows servers.

1. Add the following script:

Cat/usr/lib/nagios/plugins/check_snmp_win_cpuload.pl
#! /Usr/bin/perl
#
# Syntax: check_win_snmp_cpuload.pl HOST COMMUNITY WARN CRIT
#
# Returns average load % every SS all CPUs
#

Use strict;
Use Net: SNMP;

My $ host = shift;
My $ community = shift;
My $ warn = shift;
My $ crit = shift;

Unless ($ crit ){
ErrorExit ("syntax: check_win_snmp_cpu.pl host community warn crit ");
}

Our % ERRORS = (
OK => 0,
WARNING => 1,
CRITICAL => 2,
UNKNOWN => 3,
DEPENDENT => 4
);

My $ oidCpuTable =. 1.3.6.1.2.1.25.3.3.1.2;

# Get SNMP session object
My ($ snmp, $ err) = Net: SNMP-> session (
-Hostname => $ host,
-Community => $ community,
-Port = & gt; 161,
-Version => 1
);
ErrorExit ($ err) unless (defined ($ snmp ));

# Get cpu load table
My $ response = $ snmp-> get_table (
-Baseoid => $ oidCpuTable
);
ErrorExit ("error getting cpu table") unless $ response;
My % value = % {$ response };
$ Snmp-> close ();

My $ cnt = 0;
My $ sum = 0;
Foreach my $ load (values % value ){
$ Cnt + = 1;
$ Sum + = $ load;
};
My $ pct = int ($ sum/$ cnt );

My $ err = ($ pct> $ crit )? CRITICAL: ($ pct> $ warn )? WARNING: OK;
Print "$ err: CPU Load $ pct % ";
Exit $ ERRORS {$ err };

Sub errorExit {
My $ msg = shift;
Print "UNKNOWN: $ msg ";
Exit $ ERRORS {UNKNOWN };
}

2. Define the corresponding execution command:

Cat mysnmp. cfg
Define command {
Command_name snmp_win_cpu
Command_line/usr/lib/nagios/plugins/check_snmp_win_cpuload.pl $ HOS
TADDRESS $ public 80 90
}

3. Create a service configuration file:

Cat service. cfg
Define service {
Host_name jw-inside
Service_description CPU
Check_command snmp_win_cpu
Use generic-service
}

4. Create a host file:
Define host {
Host_name jw-inside
Alias jw-inside
Address 10.10.10.11
Use generic-host
Icon_image vendors/windowsxp.png
Icon_image_alt jw-inside-server
Vrml_image vendors/windowsxp.png
Statusmap_image vendors/windowsxp.png
}

In fact, the person familiar with nagios configuration only needs the script in step 1. I will not film