How to Install Nagios 4.4.9 On ubuntu 22.04

 

Nagios is a strong IT foundation checking device planned to give a smooth execution of cycles in an association. Nagios screens the continuous exercises of the host and it gives a caution assuming something awful occurs.

The Nagios support is accessible for Linux and Microsoft-based working frameworks. Ubuntu is a generally utilized dispersion of Linux which is outfitted with the most recent elements and an intuitive connection point. Ubuntu 22.04 is the most recent LTS delivered as of late.

Keeping in view the significance of Nagios, this post gives a bit by bit methodology to introduce Nagios on Ubuntu 22.04.

First, change hostname your server

hostnamectl set-hostname nagios-ubnt22

Change static IP Address

I set the IP address 192.168.1.20/24
Match your network

nano /etc/netplan/00-installer-config.yaml

press ctrl + x for save

hostnamectl  

 

Update and upgrade the Ubuntu system’s packages via the following command.

apt update -y && apt upgrade -y 

Install the apache, php, openssl, and relevant dependencies. You can introduce them independently, yet getting them with a solitary command is suggested.

apt install wget unzip vim curl openssl build-essential libgd-dev libssl-dev libapache2-mod-php php-gd php apache2 -y

Reboot Server

reboot

Download the tar.gz file via the following command.

wget https://github.com/NagiosEnterprises/nagioscore/releases/download/nagios-4.4.9/nagios-4.4.9.tar.gz

Extract and install nagios by following the steps.

tar -zxvf nagios-4.4.9.tar.gz

./configure

make all

make install-groups-users

usermod -a -G nagios www-data

make install

make install-daemoninit

make install-commandmode

make install-config

make install-webconf

a2enmod rewrite cgi

systemctl restart apache2

make install-classicui

For security, enable ufw (firewall) on your ubuntu server

ufw enable

ufw allow apache

ufw openssh

ufw reload

Make another Nagios client as we did here. The beneath referenced order makes a client named "nagiosadmin" and the result will request that you set a secret key for "nagiosadmin" client.

htpasswd -c /usr/local/nagios/etc/htpasswd.users nagiosadmin

Download the tar.gz file with the help of the following command.

wget https://nagios-plugins.org/download/nagios-plugins-2.3.3.tar.gz

Extract nagios-plugins

tar -zxvf nagios-plugins-2.3.3.tar.gz

nagios-plugins-2.3.3

Execute the following command to run the configure script for Nagios user and group.

./configure --with-nagios-user=nagios --with-nagios-group=nagios

 make install

 Let’s start with checking the version of installed Nagios as follows.

sudo /usr/local/nagios/bin/nagios -v

systemctl restart apache2 nagios

systemctl status apache2 nagios

Make sure the service apache2 and nagios are running

open your browser : http://192.168.1.20/24

username : nagiosadmin

password : yourpassword

Congratulations, you have already install nagios 4.4.9 on ubuntu 22.04 server version.

Thank you :)