Basic Windows monitoring in Nagios

Well now we are going to monitor a Microsoft Windows machine. For monitoring we are going to use the protocol ===

LogoNagios

Previously we have already talked about Nagios. You can see the installation manual HERE

Well now we are going to monitor a Microsoft Windows machine. For monitoring we are going to use the SNMP protocol (If you don't know how to install it in Windows HERE we have a manual) and the checkups are going to be Memory, CPU, Disk and PING.

Once we have NAGIOS AND SNMP installed and configured, we are going to start monitoring.

Define the commands:

To define we have to add the following commands to the commands.cfg file, this file will be... depending on the installation that you would have performed:

Bash

vi /etc/nagios3/commands.cfg

And we add the following:

define command{
command_name check_wincpu_snmp
command_line /usr/bin/perl $USER1$/check_snmp_load.pl -H $HOSTADDRESS$ -C $ARG1$ -2 -T stand -w $ARG2$ -c $ARG3$
}

define command{
command_name check_winmem_snmp
command_line /usr/bin/perl $USER1$/check_disk_snmp.pl -H $HOSTADDRESS$ -s $ARG1$ -d phys -u $ARG2$ -w $ARG3$ -c $ARG4$
}

define command{
command_name check_disk_snmp
command_line /usr/bin/perl $USER1$/check_disk_snmp.pl -H $HOSTADDRESS$ -s $ARG1$ -d $ARG2$ -u $ARG3$ -w $ARG4$ -c $ARG5$
}

define command{
command_name check_ping
command_line $USER1$/docu $ARG3$ «$USER1$/check_ping -H $HOSTADDRESS$ -w $ARG1$ -c $ARG2$ -p 1»
}

We create the folders where we are going to host the configuration files

Bash

mkdir /etc/nagios3/etc/cfg/Windows/

We access the directory

text

cd /etc/nagios3/etc/cfg/Windows/

We create the hosts.cfg file with the following content

Bash

#Definimos el grupo y los miembros que van a pertenecer a ese grupo

define hostgroup {

hostgroup_name grupo-windows

alias Microsoft Windows Servers

members cpd_192.168.1.112

}
#Definimos el chequeo de PING
#Ping to hosts
define service {

use windows-srv

hostgroup_name grupo-windows

service_description Windows CPD01 – ping

check_command check_ping!100.0,10%!500.0,20%

}

#Hosts Definition
#Definimos el host
define host {

use windows-srv

host_name cpd_192.168.1.112

alias CPD01

address 192.168.1.112
}

We create the file templete.cfg in which we are going to define the services.

text

define host {

name windows-srv

flap_detection_enabled 1

notification_period 24×7

notification_options d,u,r

retain_status_information 1

retain_nonstatus_information 1

contact_groups grupo-windows

# check_command check_command_blank

max_check_attempts 3

register 0
}
define service {

name windows-srv

check_period 24×7

flap_detection_enabled 1

notification_period 24×7

notification_options w,u,c,r

parallelize_check 1

retain_status_information 1

retain_nonstatus_information 1

max_check_attempts 3

normal_check_interval 3

retry_check_interval 1

contact_groups grupo-windows

register 0

}

We define the contact file contacts.cfg

Bash

define contact{

contact_name grupo-windows

alias grupo-windows

service_notification_period 24×7

host_notification_period 24×7

service_notification_options w,u,c,r

host_notification_options d,r

service_notification_commands notify-service-by-email

host_notification_commands notify-host-by-email

email rokitoh@redorbita.com

}

define contactgroup {

contactgroup_name grupo-windows

alias Grupo de Windows

members grupo-windows

}

And finally we define the cpd01.cfg checks.

text

define service {

use windows-srv

host_name cpd_192.168.1.112

service_description Uso CPU

check_command check_wincpu_snmp!redorbita!80!90

}
define service {

use windows-srv

host_name cpd_192.168.1.112

service_description Uso MEM

check_command check_winmem_snmp!redorbita!MB!80%!90%

}

define service {

use windows-srv

host_name cpd_192.168.1.112

service_description Disco C:

check_command check_disk_snmp!redorbita!C!MB!1527!898

}

Once the file is created we have to add its path to the nagios.cfg file

Bash

vi /etc/nagios3/nagios.cfg

At the end of the file we add the following:

Bash

############## Monitorización Windows #############
cfg_file=/etc/nagios3/etc/cfg/Windows/templete.cfg

cfg_file=/etc/nagios3/etc/cfg/Windows/hosts.cfg

cfg_file=/etc/nagios3/etc/cfg/Windows/cpd01.cfg

cfg_file=/etc/nagios3/etc/cfg/Windows/contacts.cfg

We check to see if there are any errors in the configuration files

Bash

rokitoh@nagios:/etc/nagios3/etc/cfg/Windows# nagios3 -v /etc/nagios3/nagios.cfg
Nagios Core 3.2.1

Copyright (c) 2009-2010 Nagios Core Development Team and Community Contributors

Copyright (c) 1999-2009 Ethan Galstad

Last Modified: 03-09-2010

License: GPL
Website: http://www.nagios.org

Reading configuration data…

Read main config file okay…

Processing object config file ‘/etc/nagios3/commands.cfg’…

Processing object config directory ‘/usr/lib/nagios/plugins’…

Processing object config file ‘/usr/lib/nagios/plugins/mailq.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_storage.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/ifstatus.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_load.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/breeze.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/ftp.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/apt.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/tcp_udp.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/ntp.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/dummy.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/mrtg.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/rpc-nfs.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/users.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/games.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/real.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/pgsql.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_vrrp.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/flexlm.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_win.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/ssh.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/ping.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/news.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/telnet.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/radius.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/fping.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/netware.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_cpfw.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_process.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/procs.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/ldap.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/mysql.cfg’…

Processing object config directory ‘/usr/lib/nagios/plugins/doc’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_int.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_mem.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/snmp_env.cfg’…

Processing object config file ‘/usr/lib/nagios/plugins/load.cfg’…

Processing object config directory ‘/etc/nagios3/conf.d’…

Processing object config file ‘/etc/nagios3/conf.d/timeperiods_nagios2.cfg’…

Processing object config file ‘/etc/nagios3/conf.d/contacts.cfg’…

Processing object config file ‘/etc/nagios3/conf.d/generic-host_nagios2.cfg’…

Processing object config file ‘/etc/nagios3/conf.d/generic-service_nagios2.cfg’…

Processing object config file ‘/etc/nagios3/etc/cfg/Windows/templete.cfg’…

Processing object config file ‘/etc/nagios3/etc/cfg/Windows/hosts.cfg’…

Processing object config file ‘/etc/nagios3/etc/cfg/Windows/cpd01.cfg’…

Processing object config file ‘/etc/nagios3/etc/cfg/Windows/contacts.cfg’…

Read object config files okay…
Running pre-flight check on configuration data…
Checking services…

Checked 4 services.

Checking hosts…

Checked 1 hosts.

Checking host groups…

Checked 1 host groups.

Checking service groups…

Checked 0 service groups.

Checking contacts…

Checked 2 contacts.

Checking contact groups…

Checked 2 contact groups.

Checking service escalations…

Checked 0 service escalations.

Checking service dependencies…

Checked 0 service dependencies.

Checking host escalations…

Checked 0 host escalations.

Checking host dependencies…

Checked 0 host dependencies.

Checking commands…

Checked 193 commands.

Checking time periods…

Checked 4 time periods.

Checking for circular paths between hosts…

Checking for circular host and service dependencies…

Checking global event handlers…

Checking obsessive compulsive processor commands…

Checking misc settings…
Total Warnings: 0

Total Errors: 0
Things look okay – No serious problems were detected during the pre-flight check

rokitoh@nagios:/etc/nagios3/etc/cfg/Windows#

And we restart nagios

rokitoh@nagios:/etc/nagios3/etc/cfg/Windows# /etc/init.d/nagios3 reload
Reloading nagios3 monitoring daemon configuration files: nagios3.
rokitoh@nagios:/etc/nagios3/etc/cfg/Windows#

We open nagios in our favorite browser and if everything went well we would have to have it OK!

Greetings, rokitoh!

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