Ubuntu Server - Nagios Core

Assuming the server already pre-installed amongst the next :-

• Ubuntu Server 14.04.1 LTS x64.
• OpenSSH
• Hostname : SVR01
• Username : master

Follow these steps-by-steps :-

1. sudo apt-get update
2. sudo apt-get upgrade
3. sudo /etc/network/interfaces
• static
• address 192.168.4.248
• netmask 255.255.255.0
• gateway 192.168.4.1
• network 192.168.4.0
• broadcast 192.168.4.255
• dns-nameservers 202.188.0.133 202.188.1.5
4. sudo apt-get install \
• wget \
• build-essential \
• apache2 \
• apache2-utils \
• libapache2-mod-php5 \
• php5-gd \
• libgd2-xpm-dev \
• postfix
5. When prompted for electronic mail address as well as SMTP server, only run the desired electronic mail address (preferably an information technology Admin email) as well as the SMTP server address.
6. sudo useradd --system --home /usr/local/nagios -M nagios
7. sudo groupadd --system nagcmd
8. sudo usermod -a -G nagcmd nagios
9. sudo usermod -a -G nagcmd www-data
10. cd /tmp
11. sudo wget http://prdownloads.sourceforge.net/sourceforge/nagios/nagios-4.0.8.tar.gz (a newer version peradventure available during this post, delight cheque Nagios website).
12. sudo wget http://nagios-plugins.org/download/nagios-plugins-2.0.3.tar.gz (a newer version of plugins peradventure available during this post, delight cheque Nagios website).
13. tar -xzvf nagios-4.0.8.tar.gz
14. tar -xzvf nagios-plugins-2.0.3.tar.gz
15. cd nagios-4.0.8
16. sudo ./configure \
• --with-nagios-group=nagios\
• --with-command-group nagcmd \
• --with-mail=/usr/sbin/sendmail \
• --with-httpd_conf=/etc/apache2/conf-available
17. sudo brand all
18. sudo brand install
19. sudo brand install-init
20. sudo brand install-config
21. sudo brand install-commandmode
22. sudo brand install-webconf
23. sudo cp -R contrib/eventhandlers/ /usr/local/nagios/libexec/
24. sudo chown -R nagios:nagios /usr/local/nagios/libexec/eventhandlers
25. sudo /usr/local/nagios/bin/nagios -v /usr/local/nagios/etc/nagios.cfg (verify Nagios configuration is right or not).
26. sudo ln -s /etc/init.d/nagios /etc/rcS.d/S99nagios
27. cd ..
28. cd nagios-plugins-2.0.3
29. sudo ./configure \
• --with-nagios-user=nagios \
• --with-nagios-group=nagios \
• --enable-perl-modules \
• --enable-extra-opts
30. sudo make
31. sudo brand install
32. sudo a2enmod cgi
33. sudo htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin (when prompted for password, key-in your preferred password, this volition hold out run during login to the Web GUI).
34. sudo nano /etc/apache2/sites-enabled/000-default.conf
• Type --> Include conf-available/nagios.conf
35. sudo nano /etc/apache2/conf-available/fqdn.conf
• Type --> SVR01 localhost
36. sudo a2enconf fqdn
37. sudo nano /usr/local/nagios/etc/objects/contacts.cfg
• nagiosadmin = master@domain.com
38. sudo service apache2 restart
39. sudo service nagios start

Now from around other PC amongst Windows, opened upward Internet Explorer :-
URL = http://192.168.4.248/nagios

When prompted for username as well as password :-
Username = master
Password = [the password you lot convey specified earlier]

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