RHEL8/Centos8 New Feature vs RHEL7/Centos7

by Anish

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Posted on Monday October 21-2019

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TL;DR

The RHEL8 releases on 8.0 / May 7, 2019; 5 months ago. Red Hat Enterprise Linux 8 (Ootpa) is based on Fedora 28, upstream Linux kernel 4.18, GCC 8.2, glibc 2.28, systemd 239, and GNOME 3.28

The CentOS-8 (1905) release platform derived from the sources of Red Hat Enterprise Linux (RHEL)

Here are the some Notable Changes to latest Release.

Application Streams

RHEL 8.0/Centos8 introduces the concept of Application Streams. Each application stream will be supported from two to five years.

Application streams are fully supported for a predefined lifetime for example

Application Stream	Release Date	Retirement Date	Release
varnish 6	May 2019	May 2022	8.0.0
postgresql 10	May 2019	May 2024	8.0.0.
-	-	-	-

Repositories

Red Hat Enterprise Linux 8 is distributed through two main repositories and introduce Red Hat Universal Base Image (UBI).

• BaseOS
• AppStream

Both repositories are required for a basic RHEL installation, and are available with all RHEL subscriptions.

• RHEL8

sh-4.4# dnf repolist
ubi-8-appstream    Red Hat Universal Base Image 8 (RPMs) - AppStream   778
ubi-8-baseos       Red Hat Universal Base Image 8 (RPMs) - BaseOS      659

• Centos 8

sh-4.4# dnf repolist
Last metadata expiration check: 0:08:52 ago on Sun Oct 20 11:54:48 2019.
repo id  repo name  status
AppStream  CentOS-8 - AppStream 5069
BaseOS CentOS-8 - Base  2835
extras CentOS-8 - Extras 3

Software and Packages

Package	RHEL8/Centos8	RHEL7/Centos7
YUM	YUM v4: Based on DNF technology	YUM v3 used on RHEL 7/Centos7
Shells and command-line tools	The nobody user replaces nfsnobody	he nobody user and group pair with the ID of 99 and the nfsnobody user and group pair with the ID of 65534,
version control systems	Git 2.18, Mercurial 4.8, and Subversion 1.10 and Concurrent Versions System (CVS) and Revision Control System (RCS), available in RHEL 7, are not distributed with RHEL 8	Older versions
Python	Python 3 is the default Python	Python 2.7 is the default Python
PHP	distributed with PHP 7.2	distributed with PHP 5.4
Nodejs	Node.js new in RHEL8	NA
Perl	Perl 5.26	Perl 5.20
httpd	Apache HTTP Server 2.4.37
nginx	RHEL 8 introduces nginx 1.14	NA
Database	MySQL 8.0, MariaDB 10.3,PostgreSQL 10 Redis 5. MongoDB database server is not included in RHEL 8.0	-
squid	Squid 4.4	Older version of squid
Varnish	Varnish Cache new in RHEL Varnish Cache 6.0	NA

New Web Console

webconsole	RHEL8	RHEL7
Subscriptions	The web console's Subscriptions page is now provided by the new subscription-manager-cockpit package.	opensource
firewall	The Networking page in the RHEL 8 web console now includes a Firewall section	NA
Virtual Machine	The Virtual Machines page can now be added to the RHEL 8 web console interface, which enables the user to create and manage libvirt-based virtual machines	NA

Security

Firewall	RHEL8/Centos8	RHEL7/Centos7
nftables	nftables replaces iptables, ip6tables, ebtables and arptables as the default network packet filtering framework	iptables is default
firewalld	firewalld uses nftables by default	-

Virtualization

Virtualization	RHEL8/Centos8	RHEL7
Virtualization	qemu-kvm 2.12	qemu-kvm 1.5.3

References

• RHEL8 Release Note

• Centos8 Release Note

Next Reading : How to Monitoring All Executed Commands in Linux

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