1. Instalasi dan konfigurasi Nagios3 Pada Ubuntu 12.04
1. Pertama masuk pada terminal di ubuntu untuk mulai instalasi nagios3
root@febiramadhan-Aspire-4741:/home/febiramadhan#
2. cek apakah packet yang dibutuhkan sudah ada atau perlu diinstalkan kembali
root@febiramadhan-Aspire-4741:/home/febiramadhan# dpkg -l |grep apache2
root@febiramadhan-Aspire-4741:/home/febiramadhan# dpkg -l |grep nagios3
3. Jika belum anda perlu setting “/etc/apt/source.list” dan masukan alamat repository
root@febiramadhan-Aspire-4741:/home/febiramadhan# nano /etc/apt/sources.list
4. lalu save dan mulai ketikan “apt-get install nagios3” dan “apt-get install apache2”
root@febiramadhan-Aspire-4741:/home/febiramadhan# apt-get install apache2
root@febiramadhan-Aspire-4741:/home/febiramadhan# apt-get install nagios3
5. lalu mulai konfigurasi dan masuk pada file “/etc/nagios3/conf.d/localhost_nagios2.cfg”
# A simple configuration file for monitoring the local host
# This can serve as an example for configuring other servers;
# Custom services specific to this host are added here, but services
# defined in nagios2-common_services.cfg may also apply.
define host{
use generic-host ; Name of host template to use
host_name nugroho
alias LMD
address 192.168.0.19
}
define host{
use generic-host ; Name of host template to use
host_name firman
alias LMD
address 192.168.0.18
}
define host{
use generic-host ; Name of host template to use
host_name indri
alias LMD
address 192.168.0.26
}
# Define a service to check the disk space of the root partition
# on the local machine. Warning if <20% free, critical if
# <10% free space on partition.
define service{
use generic-service ; Name of service template to use

2. host_name nugroho
service_description Disk Space
check_command check_all_disks!20%!10%
}
define service{
use generic-service ; Name of service template to use
host_name firman
service_description Disk Space
check_command check_all_disks!20%!10%
}
define service{
use generic-service ; Name of service template to use
host_name indri
service_description Disk Space
check_command check_all_disks!20%!10%
}
# Define a service to check the number of currently logged in
# users on the local machine. Warning if >20 users, critical
# if >50 users.
define service{
use generic-service ; Name of service template to use
host_name nugroho
service_description Current Users
check_command check_users!20!50
}
define service{
use generic-service ; Name of service template to use
host_name firman
service_description Current Users
check_command check_users!20!50
}
define service{
use generic-service ; Name of service template to use
host_name indri
service_description Current Users
check_command check_users!20!50
}
# Define a service to check the number of currently running procs
# on the local machine. Warning if >250 processes, critical if

3. # >400 processes.
define service{
use generic-service ; Name of service template to use
host_name nugroho
service_description Total Processes
check_command check_procs!250!400
}
define service{
use generic-service ; Name of service template to use
host_name firman
service_description Total Processes
check_command check_procs!250!400
}
define service{
use generic-service ; Name of service template to use
host_name indri
service_description Total Processes
check_command check_procs!250!400
}
# Define a service to check the load on the local machine.
define service{
use generic-service ; Name of service template to use
host_name nugroho
service_description Current Load
check_command check_load!5.0!4.0!3.0!10.0!6.0!4.0
}
define service{
use generic-service ; Name of service template to use
host_name firman
service_description Current Load
check_command check_load!5.0!4.0!3.0!10.0!6.0!4.0
}
define service{
use generic-service ; Name of service template to use
host_name indri
service_description Current Load
check_command check_load!5.0!4.0!3.0!10.0!6.0!4.0
}

4. 6. Lalu masuk pada “/etc/nagios3/conf.d/hostgroup_nagios2.cfg” dan masukan sintaks
tambahan pada file dan mengelompokan sesuai yang kita inginkan.
# Some generic hostgroup definitions
# A simple wildcard hostgroup
define hostgroup {
hostgroup_name all
alias All Servers
members nugroho,firman,indri
}
# A list of your Debian GNU/Linux servers
define hostgroup {
hostgroup_name debian-servers
alias Debian GNU/Linux Servers
members nugroho,firman,indri
}
# A list of your web servers
define hostgroup {
hostgroup_name http-servers
alias HTTP servers
members nugroho,firman,indri
}
# A list of your ssh-accessible servers
define hostgroup {
hostgroup_name ssh-servers
alias SSH servers
members nugroho,firman,indri
}
# A list of your ping servers
define hostgroup {
hostgroup_name ping-servers
alias Ping Servers
members nugroho,firman,indri
}

5. 7. Lalu masuk file “/etc/nagios3/conf.d/services_nagios2.cfg” untuk memasukan settingan
dan perintah pengecekan monitoring yang akan dilakukan.
# check that web services are running
define service {
hostgroup_name http-servers
service_description HTTP
check_command check_http
use generic-service
notification_interval 0 ; set >0 if you want to be renotified
}
# check that ssh services are running
define service {
hostgroup_name ssh-servers
service_description SSH
check_command check_ssh
use generic-service
notification_interval 0 ; set >0 if you want to be renotified
}
define service {
hostgroup_name ping-servers
service_description PING
check_command check_ping
use generic-service
notification_interval 0 ; set >0 if you want to be renotified
}
8. Lalu restart paket nagios
root@febiramadhan-Aspire-4741:/home/febiramadhan# invoke-rc.d nagios3 restart
9. Dan terkahir jangan lupa masukan perintah memasukan password dan ussername nya
root@febiramadhan-Aspire-4741:/home/febiramadhan# htpasswd –c /etc/nagios3/htpaswd.users
nagiosadmin
10. Konfigurasi selesai, kita langsung bisa membuktikan bahwa host atau ketiga user dalam
ketiga IP tersebut dapat kita monitoring
Nugroho : 192.168.0.19
Firman : 192.168.0.18
Indri : 192.168.0.26
11. Buka web browser

6. 12. masuk ke halaman “http:/localhost/nagios3” dan masuk sesuai username dan password
yang telah di setting.
13. Lalu pilih “map” di pojok kiri untuk melihat hasil user yang telah kita monitoring.

7. 14. Dan kita lihat semua status host yang telah kita monitoring