Monitoring windows host from Nagios monitoring system
Last time we have seen how to install nagios. Today we will see how to add Windows system in to nagios for monitoring.
suppose I wanted to monitor following network in to nagios :-
Suppose :-
Server-PT is mail server and IP address is 192.168.1.2
Router1 has ip address eth0 192.168.1.1 and for eth1 192.168.2.1
Router0 has ip address eth1 192.168.2.2 and for eth0 192.168.3.1
and our other server are in this network like Nagios server, File server, Domain Controller and access point.
Nagios has ip address 192.168.3.2
File_server has ip address 192.168.3.3
AD_server is working as DNS, DHCP and Domain Controller server and it has ip address 192.168.3.4
Access_point has ip address 192.168.3.5
Now login in to Nagios and create object configuration file as:-
# touch /etc/nagios/hosts.cfg (To define host)
# touch /etc/nagios/services.cfg (To define Services)
# touch /etc/nagios/hostgroups.cfg (To define hostgroups)
# touch /etc/nagios/contacts.cfg (To define Contacts details)
Give sufficient right to nagios to read file
# chown -r nagios.nagios /etc/nagios/*
Now specify all these file and directory in nagios main configuration file.
# vi /etc/nagios/nagios.cfg
cfg_file=/etc/nagios/hosts.cfg
cfg_file=/etc/nagios/services.cfg
cfg_file=/etc/nagios/hostgroups.cfg
cfg_file=/etc/nagios/contacts.cfg
Now configure object configuration file:-
# vi /etc/nagios/contacts.cfg
# Define contact details
define contact{
contact_name sandeep
use generic-contact
alias Sandeep Kapadane
email sandeepk@domainname.com
}
define contact{
contact_name help
use generic-contact
alias IT Support help
email help@domainname.com
}
define contact{
contact_name manager
use generic-contact
alias Team Manager
email manager@domainname.com
}
# Define contact groups
define contactgroup{
contactgroup_name It-Team
alias IT Team
members sandeepk,help,manager
}
# vi /etc/nagios/hosts.cfg
# Create template for host as generic-server and core-server
define host{
name generic-server
notifications_enabled 1
event_handler_enabled 1
flap_detection_enabled 1
failure_prediction_enabled 1
process_perf_data 1
retain_status_information 1
retain_nonstatus_information 1
notification_period 24x7
register 0
}
define host{
name core-server
use generic-server
check_period 24x7
check_interval 5
retry_interval 1
max_check_attempts 10
check_command check-host-alive
notification_interval 60
notification_options d,u,r
contact_groups admins
register 0
}
# Define host
define host{
use core-server
host_name Router0
alias Router0
address 192.168.3.1
}
define host{
use core-server
host_name Router1
alias Router1
address 192.168.1.1
parents Router0
}
define host{
use core-server
host_name Server-PT
alias Mail Server
address 192.168.1.2
parents Router1
}
define host{
use core-server
host_name File_server
alias File Server
address 192.168.3.3
}
define host{
use core-server
host_name AD_server
alias Domain Controller
address 192.168.3.4
}
define host{
use core-server
host_name Access_point
alias Wireless Access point
address 192.168.3.5
}
Now define Host Groups in object configuation file
# vi /etc/nagios/hostgroups.cfg
define hostgroup{
hostgroup_name all_hosts
alias All Hosts
members Router0, Router1, Server-PT, File_server, AD_server, Access_point
}
define hostgroup{
hostgroup_name Domain Controllers
alias Domain Controllers
members AD_server
}
define hostgroup{
hostgroup_name CoreNetwork
alias CoreNetwork
members Router0, Router1,Access_point
}
define hostgroup{
hostgroup_name CoreServer
alias CoreServer
members Server-PT, File_server, AD_server
}
Now Define Services to monitor in object configuration file services.cfg
# vi /etc/nagios/services.cfg
# Create Template for all services.
define service{
name services
active_checks_enabled 1
passive_checks_enabled 1
parallelize_check 1
obsess_over_service 1
check_freshness 0
notifications_enabled 1
event_handler_enabled 1
flap_detection_enabled 1
failure_prediction_enabled 1
process_perf_data 1
retain_status_information 1
retain_nonstatus_information 1
is_volatile 0
check_period 24x7
max_check_attempts 3
normal_check_interval 10
retry_check_interval 2
contact_groups admins
notification_options w,u,c,r
# notification_interval 60
notification_period 24x7
register 0
}
# create template for Ping service
define service{
use services
name ping
check_command check_ping!1000.0,20%!2000.0,60%
register 0
}
# Add host for ping
define service{
use ping
service_description PING
hostgroup_name all_hosts
}
# Monitor UP Time
define service{
use services
name uptime
check_command check_nt!UPTIME
register 0
}
define service{
use uptime
service_description UP TIME
host_name Server-PT, File_server, AD_server
hostgroup_name
}
define service{
use services
name Uptime
check_command check_snmp!-C public -o sysUpTime.
register 0
}
define service{
use Uptime
service_description UP TIME
# host_name
hostgroup_name CoreNetwork
}
# Monitoring Disk Space
define service{
use services
name Disk space on c
check_command check_nt!USEDDISKSPACE!-l c -w 80 -c 90
register 0
}
define service{
use Disk space on c
service_description C: Drive Space
host_name Server-PT, File_server, AD_server
# hostgroup_name Domain Controllers
}
define service{
use services
name Disk space on d
check_command check_nt!USEDDISKSPACE!-l d -w 80 -c 90
register 0
}
define service{
use Disk space on d
service_description D: Drive Space
host_name Server-PT, File_server
# hostgroup_name Domain Controllers
}
# Monitoring CPU Load
define service{
use services
name CPU Load
check_command check_nt!CLIENTVERSION
register 0
}
define service{
use CPU Load
service_description CPU Load
hostgroup_name Domain Controllers
host_name Server-PT
}
# Monitoring Memory Usage
define service{
use services
name Memory Usage
check_command check_nt!MEMUSE!-w 80 -c 90
register 0
}
define service{
use Memory Usage
service_description Memory Usage
hostgroup_name Domain Controllers
host_name Server-PT
}
# Monitoring System Services
define service{
use services
name Server Service
check_command check_nt!SERVICESTATE!-d SHOWALL -l lanmanServer
register 0
}
define service{
use Server Service
service_description Server Service
# hostgroup_name Domain Controllers
host_name Server-PT, File_server, AD_server
}
define service{
use services
name DNS Server Service
check_command check_nt!SERVICESTATE!-d SHOWALL -l Dns
register 0
}
define service{
use DNS Server Service
service_description DNS Server Service
hostgroup_name Domain Controllers
# host_name
}
define service{
use services
name DHCP Server Service
check_command check_nt!SERVICESTATE!-d SHOWALL -l DhcpServer
register 0
}
define service{
use DHCP Server Service
service_description DHCP Server Service
hostgroup_name Domain Controllers
# host_name
}
define service{
use services
name Net Logon service
check_command check_nt!SERVICESTATE!-d SHOWALL -l Netlogon
register 0
}
define service{
use Net Logon service
service_description Net Logon service
hostgroup_name Domain Controllers
# host_name
}
# Monitoring NSClient Version
define service{
use services
name NSClinet Version
check_command check_nt!CLIENTVERSION
register 0
}
define service{
use NSClinet Version
service_description NSClient++ Version
# hostgroup_name Domain Controllers
host_name Server-PT, File_server, AD_server
}
# Next time we will see how to configure nagios for host and service escalation and dependency
