26 Sep, 2019 | By |BY ZYNUX

CentOS 8 Released

CentOS 8 has been released on 24th September 2019. You now may be looking to try the world’s best opensource enterprise operating system.CentOS 8 is derived from the source of Red Hat Enterprise Linux 8 and uses Linux kernel 4.18.There is a new distribution called CentOS stream,  a rolling-release Linux distro that sits between the upstream development in Fedora Linux and the downstream development for Red Hat Enterprise Linux. You can read about it on ContOS Stream release notes.

Developer: Red Hat

Released On: 24th September 2019

OS family: Linux (RPM)

Kernel Type: Monolithic (Linux Kernel)

What’s New in CentOS 8?

As you probably know, CentOS 8 is a clone of RHEL 8 so it benefits from its latest features:

  • Cockpit web console is available by default in CentOS 8
  • Support for up to 4PB of physical memory
  • Nginx 1.14 is now available in the core repository
  • PHP version 7.2 is the default PHP version
  • Python 3.6 is the default Python version
  • Wayland is the default display server
  • nftables has replaced iptables to be the default network filtering framework
  • XFS now has support for shared copy-on-write data extents
  • RPM 4.14 (as distributed in RHEL 8) validates package content before installing
  • A new version of YUM based on DNF which is compatible with YUM 3 (as is in CentOS 8)
  • Content is channeled through 2 main repos: BaseOS and Application Stream (AppStream)

“BaseOS” & “AppStream”:

The principal repository, BaseOS, provides the parts of the distribution that give you running userspace on physical hardware, a virtual machine, a cloud instance, or a container. The Application Stream (AppStream) repository provides all the applications you might want to run in given userspace. The Supplemental repository provides other software that has special licensing

Supported Architectures:

CentOS 8 provides installation media for following architectures.

  • AMD and Intel 64-bit architectures
  • The 64-bit ARM architecture
  • IBM Power Systems, Little Endian

System Requirements:

At least 2 GB RAM is required to install CentOS 8. 4 GB RAM is recommended.

Other improvements and new features in CentOS 8 Linux:

  • CentOS 8 supports secure-boot guests or VMs which use cryptographically signed images to ensure integrity
  • You need to use the nmcli command to manage network configuration through NetworkManager
  • Improved memory management and support. For example, CentOS 8 provides support for for 57-bit virtual memory addressing (128 PiB ) and 52-bit physical memory addressing (up to 4 PiB
    RAM). Linux kernel supports a 5-level page table implementation
  • Crash dump can capture kernel crash during all phases of booting which was not possible on CentOS Linux 7
  • The process scheduler made many enhancements. Also includes the new deadline process scheduler
  • Can install and boot from non-volatile dual in-line memory module(NVDIMM)
  • nftables  is a framework by the Netfilter Project that provides packet filtering, network address translation (NAT) and other packet manglin. It is the default firewall backend on CentOS 8
  • chrony is a versatile implementation of the Network Time Protocol (NTP). It can synchronise the system clock with NTP servers and is default on CentOS 8. Old ntpd is gone
  • LUKS2 for encrypted storage on CentOS

What is CentOS Stream?

The CentOS Stream project sits between the Fedora Project and RHEL in the RHEL Development process, providing a “rolling preview” of future RHEL kernels and features. This enables developers to stay one or two steps ahead of what’s coming in RHEL, which was not previously possible with traditional CentOS releases. CentOS Stream better connects ISV, IHV and other ecosystem developers to the operating system developers of the Fedora Project, shortening the feedback loop and making it easier for all voices to be heard in the creation of the next RHEL versions.

Download CentOS 8:

Click the below link to download the CentOS 8

https://www.centos.org/download/

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

What is CentOS ?

CentOS from Community Enterprise Operating System is a Linux distribution that provides a free,community supported computed computing platform functionally compatible with its upstream source,Red Hat Enterprise Linux (RHEL).In January 2014,CentOS announced the official joining with RedHat while staying independent from RHEL, under a new CentOS governing board.

The first CentOS release in May 2004,numbered as CentOS Version 2,was forked from RHEL version 2.1AS.Since the release of version 7.0,CentOS officially supports only the x86-64 architecture,while versions older than 7.0-1406 also support IA-32 with Physical Address Extension(PAE).As of December 2015,AltArch release of CentOS 7 are available for the IA-32 architecture,Power ISA, and for the ARMv7hl and AArch64 variants of the ARM architecture. Building of CentOS 8 started at May 2019.CentOS 8 was released on 24, September 2019.

Why is CentOS Popular?

The reasons why CentOS is really so Popular. … CentOS furnishes the best of both worlds. On one hand, you get an enterprise-quality operating system, basically because it is based on the source code of Red Had Enterprise Linux, which has been examined and stabilized extensively prior to release.

What is the purpose of CentOS?

The CentOS Project is a community-driven free software effort focused around the goal of providing a rich base platform for open source communities to build upon. We will provide a development framework for cloud providers, the hosting community, and scientific data processing, as a few examples.

Conclusion:

CentOS 8 is a significant upgrade that ships with much-updated software that developers like to build web apps and container workload. The desktop provides a pleasant experience. In short, I highly recommend this version.