How to Install Ubuntu 18.04 LTS (Bionic Beaver) Minimal Server

This tutorial shows the installation of an Ubuntu 18.04 LTS minimal server in detail with many screenshots. The purpose of the guide is to show the basic installation of Ubuntu 18.04 LTS that can be used as the basis for our other Ubuntu tutorials here at howtoforge like our perfect server guides. This tutorial uses the LTS branch which gets updates for 5 years from Ubuntu and which is recommended for use on servers.

1. Requirements

To install an Ubuntu Server, you will need the following prerequisites:

• The Ubuntu 18.04 server CD, available here: http://cdimage.ubuntu.com/releases/18.04.1/release/ubuntu-18.04.1-server-amd64.iso (For 64Bit Intel and AMD CPU's). Take a look here for other Ubuntu downloads: http://cdimage.ubuntu.com/releases/18.04.1/release/
• A fast internet connection is recommended as the package updates get downloaded from Ubuntu servers during installation.

2. Preliminary Note

In this tutorial, I use the hostname server1.example.com with the IP address 192.168.1.100 and the gateway 192.168.1.1 These settings might differ for you, so you have to replace them where appropriate.

3. The Base System

Insert the Ubuntu install CD / DVD into your system and boot from it. When you install the OS in a virtual machine like I will do it here, then you should be able to select the downloaded ISO file as source for the CD/DVD drive in VMWare and Virtualbox without burning it on CD first.

The first screen will show the language selector. Please select your language for the installation process:

Then choose the option Install Ubuntu Server:

Select your language again, this time the language is for the installed Ubuntu OS:

Then choose your location. The location settings are important for the keyboard layout, locale and timezone of your server:

Choose a keyboard layout: You have the option to let the Ubuntu installer detect the keyboard layout automatically by choosing "yes" here. I prefer to select the right keyboard from a list and therefore, I choose No & keyboard layout as German:

The installer checks the installation CD, your hardware, and configures the network with DHCP if there is a DHCP server in the network:

Enter the hostname of the system. In this example, my server is named server1.example.com, so I enter server1.example.com:

Ubuntu does not let you log in as root user directly. Therefore, we create a new system user here for the initial login. I will create a user with the name Administrator and user name administrator (don't use the user name admin as it is a reserved name on Ubuntu Linux):

Choose a password: