How to Installing CentOS 8

As you are aware, CentOS is a community-supported enterprise operating system, compatible with its upstream source Red Hat Enterprise Linux, from the CentOS Project.

New Features

There are notable differences between EL-8 and EL-7 in Kernel, package repository format, and lots of new features that EL-7 do not have.

Since CentOS 8 is derived from RHEL 8, you would get the features of RHEL 8.

  1. The Cockpit is now available by default
  2. CentOS 8 comes with a new version of the YUM version which is based on DNF. This new version is compatible with YUM v3 (CentOS 7)
  3. RPM v4.14 is distributed in CentOS 8. RPM now validates the whole package contents before starting the installation
  4. CentOS 8 contents are available through the two main repositories: BaseOS and Application Stream (AppStream)
  5. It supports up to 4PB of physical memory
  6. Wayland is the default display server instead of the Xorg server in CentOS 8
  7. XFS now supports shared copy-on-write data extents
  8. nftables replaces iptables as the default network filtering framework
  9. Python 3.6 is the default Python version in CentOS 8
  10. PHP 7.2 comes with CentOS 8
  11. Nginx 1.14 is available in core repository in CentOS 8

Download CentOS 8

Click the below link to download the CentOS 8.

Choose the CentOS Linux DVD ISO image for the installation.

Install CentOS 8

Installation of CentOS 8 is very similar to CentOS 7, and you would not find any difficulty in getting the CentOS 8 ready for testing.

Boot the DVD and select Install CentOS Linux 8.0.1905 from the boot menu.

Install CentOS 8
Install CentOS 8

Select the language for CentOS 8 installation and continue.

Select Language
Select Language

Next step is the installation summary. You must clear the warning messages for the CentOS installation.

You can change the settings by clicking on it.

  • Localization
  • Software
  • System
Installation Summary
Installation Summary

Localization

  • Keyboard
  • Language Support
  • Time & Date

Keyboard

Choose the keyboard layout. Keyboard tops the list will be the default.

Keyboard Layout
Keyboard Layout

Language Support

We have already set up Language Support.

Time & Date

Click on time and date to change the Time, Date, and the Timezone.

Time and Date
Time and Date

Software

  • Installation Source
  • Software Selection

Installation Source

Leave the installation source be Local Media.

Software Selection

Software Installation lets you decide what all the packages you want to install along with the OS installation are.

There are five predefined installation types available to prepare your system for particular requirements.

  • Server with GUI
  • Server
  • Minimal Install
  • Workstation
  • Custom Operating System (Need to choose manually)
  • Virtualization Host

Choose the one from above that is suitable for your installation (I chose Server with GUI) and click on done.

Installation Type
Installation Type

System

  • Installation Destination
  • Kdump
  • Network & Host Name
  • Security Policy
  • System Purpose

Installation Destination

Click on Installation Destination to set up partitions for the installation.

Here, I will do the custom partition to suit below requirement (100GB Hard disk).

You can partition your system as per your need.

Standard Partition:

/boot1 GB (ext4)

LVM:

/home50GB (xfs)

/ (root)30 GB (xfs)

swap4GB

Custom Partitioning
Custom Partitioning

Make sure LVM is selected and click + (plus) sign to create a new partition.

LVM Partitioning Scheme
LVM Partitioning Scheme

/boot1 GB

boot Partition
boot Partition

/home50GB

home Partition
home Partition

/ (root)30 GB

root Partition
root Partition

swap4GB

SWAP
SWAP

If you are okay with the partitioning, click Done.

Partition Summary
Partition Summary

Click Accept Changes to create partitions.

Accept Changes
Accept Changes

KDUMP

Keep the KDUMP enabled.

KDUMP
KDUMP

Network & Host Name

Click on the Network and Host Name to configure IP Address and set hostname for your system.

Type the hostname in the Host Name field and click Apply.

Set Host Name
Set Host Name

Then, click Configure in the above page to set up the IP Address.

Configure IP Address
Configure IP Address

Enable the network connection by turning it on.

Enable Network
Enable Network

By now, you should not see any warnings in the Installation summary.

Click Begin Installation to start the installation of CentOS 8.

Begin CentOS 8 Installation
Begin CentOS 8 Installation

Configuration

The OS installer will now start to install the packages based on the installation type.

In the meantime, we will set up the following.

  • Root Password
  • User Creation
Configuration
Configuration

Root Password

Set the root password.

Set Root Password
Set Root Password

User Creation

Create a user (This is optional and can be created later).

Create New User
Create New User

Wait for the installation to finish.

Installation In Progress
Installation In Progress

Once CentOS 8 installation is completed, reboot the system.

Installation Completed
Installation Completed

The system will boot and display the CentOS 8 menu screen something like below.

CentOS 8 Menu
CentOS 8 Menu

On a successful reboot, you will get post-installation setup.

You would get a command login screen if you chose to do the minimal installation. If you want, you could install GNOME desktop packages to have a graphical desktop environment.

Post Installation

Click on License Information.

Post Installation
Post Installation

Select I accept the license agreement on the license agreement screen and click Done.

Accept License
Accept License

Choose the user and login with the password.

Login Screen
Login Screen

Perform remaining steps as per your requirement.

Welcome Screen
Welcome Screen
Keyboard Layout
Keyboard Layout
Privacy
Privacy
Connect Online Accounts
Connect Online Accounts
Start Using CentOS Linux
Start Using CentOS Linux

Finally, you will get Getting Started with CentOS 8.

Getting Started
Getting Started

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