What’s New in Red Hat Enterprise Linux 9 (RHEL 9)
Great news for RED HAT lovers, Now Red Hat Enterprise Linux 9 (RHEL 9) is available for customers. RHEL 9 can be downloaded for free as part of the Red Hat Developer program subscription.
Its release was on the market on 17 May 2022; it launched with new features, advanced security, and an updated version of packages that improve the developer’s experience. Red Hat Enterprises Linux 9 is available with extended RHEL 8 new module packaging features.
Red Hat Enterprises Linux 9 powered by the Linux 5.14 kernel with new and enhanced web console performance metric of system, Smart Card Authentication via web console, new security profiles, Integrity Measurement Architecture (IMA) digital hashes and signatures, SSSD login, OpenSSL 3 integration and disablement of SSH root password login for enhancing the security.
Red Hat Enterprises Linux 9 comes with WireGuard VPN Technology and a new MultiPath TCP Daemon to configure multipath TCP endpoint without using uproot. It provides improved container development for building apps with UBI container images, cgroup2 enabled with the latest pod manager tool.
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RHEL 9 Release with new features
RHEL 9 launched with so many new features and upgraded versions of packages with new patches for bugs and vulnerabilities. RHEL 9 is now available with the following major features.
- Enhanced web console performance metrics
This feature makes it easy for the system admin and operation team to monitor and identify performance metrics. It allows quick report generation and presentation with one click.
- Kernel live patching
It is one of the best features for managing kernel update, RHEL 9 provide the ability to manage kernel patching with a cockpit web console.
- Streamlined image building
RHEL 9 comes with various improvements like an image builder that gives the ability to build RHEL8 and RHEL 9 images through a single build node. This feature is very useful for the developer community.
- Enhanced security
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- Smart card authentication via the web console.
- Additional SELinux security profiles.
- Detailed SSSD Logging and search capabilities.
- Integrated OpenSSL 3.
- Integrity Measurement Architecture allows you to dynamically verify the integrity of the OS.
- The SSH root password is now disabled by default.
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- Improved container development
RHEL 9 ships launch with upgraded version podman with new features and advanced technology.
- Link Time Optimization
It allows speeding up various applications and running services as well as source code inspection at the time of compilation.
- Application Updates
You can find all application releases with new versions which available in RHEL8 such as newer versions available of Perl, python, ruby, git, apache, Nginx, MySQL, MariaDB, and more.
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Comparison between RHEL 8 and RHEL 9
So many users are familiar with the Red Hat Enterprises Linux 8 Oopta version, here we compare RHEL 9 and RHEL 8 all major features.
| Feature | RHEL 9 | RHEL 8 |
| Release Date | 17th May 2022 | 7th May 2019 |
| OS Code Name | Plow | Ootpa |
| Kernel-Version | Release with Update Kernel Version 5.14 | Release with Kernel Version 4.18 |
| RPM Package Management | DNF, YUM Support | DNF, YUM Support |
| Supported architectures | AMD and Intel 64-bit architectures (x86-64-v2) The 64-bit ARM architecture (ARMv8.0-A) IBM Power Systems, Little Endian (POWER9) 64-bit IBM Z (z14) |
AMD and Intel 64-bit architectures The 64-bit ARM architecture IBM Power Systems, Little Endian IBM Z |
| Repositories | Red Hat Enterprise Linux 9 is launched with 2 main repositories with updated package versions BaseOS AppStream |
Red Hat Enterprise Linux 8 is launched with 2 main repositories BaseOS AppStream |
| Initial Setup | To improve user experience removing the initial startup screen it easy for new users when using RHEL 9. Fast and easy process. | RHEL8 users need to configure initial setups of Licensing, Subscription manager, and User Settings prior to gnome-initial setup and login screens. |
| SELinux | Red Hat Enterprise Linux 9 release without support for disabling SELinux through the SELINUX=disabled option in the /etc/selinux/config file has been removed from the kernel. | Red Hat Enterprise Linux 8 release with Support for disabling SELinux through the SELINUX=disabled option in the /etc/selinux/config is supported. |
| Network Scripts | RHEL 9 does not contain the network-scripts package. To configure network connections in RHEL 9, use NetworkManager for manage connections. | Red Hat Enterprise Linux 8 network-scripts package was still available but deprecated in an updated version |
| Default Version of Programming Languages | Node.js 16 Perl 5.32 PHP 8.0 Python 3.9 Ruby 3.0All programming languages updated better for new functionalities |
Node.js 16 Perl 5.26 PHP 7.2 Python 3.6 Ruby 2.5 Python 2.7 which is available in python package 2 with a shorter life cycle. |
| Packet filtering Tools | nftables is the default network packet filtering framework available in RHEL9 and the ipset and iptables-nft packages have been deprecated. | Red Hat Enterprise Linux 8 nftables replaces tables as the default network packet filtering framework |
| File systems | XFS is the default file system and now supports bigtime and inobtcount features. Additionally, the distributor release it with exFAT file system supported in RHEL 9. | In Red Hat Enterprise Linux 8 XFS is the default file system.
It is distributed with ext3,ext4,vfat, and other important file systems. |
| Virtual Data Optimizer (VDO) | The python-based VDO Management software is no longer available in RHEL 9. This functionality is now provided by the LVM-VDO implementation software which can manage VDO volumes. | Red Hat Enterprise Linux 8 VDO is available on all of the architectures supported but does not use max user this functionality. |
| Default Container Runtime | Crun | runc and Docker are not included in RHEL 8.0. |
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Major Updates in RHEL 9
RHEL9 launch with the following important features and functionalities
RHEL 9 supports newer versions of languages
- Python 3.9
- Node.js 16
- Ruby 3.0.3
- Perl 5.32
- PHP 8.0
It comes with preinstalled Version Control System
- Git 2.31
- Subversion 1.14
RHEL 9 is available with caching server
- Squid 5.2
- Varnish cache 6.6
RHEL 9 comes with the following database support.
- MySQL 8.0
- MariaDB 10.5
- PostgreSQL 13
- Redis 6.2
RHEL 9 release with the following compilers and development tools
- GCC 11.2.1
- glibc 2.34
- binutils 2.35.2
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As well as it provides the following compiles toolset in RHEL 9
- Go Toolset 1.17.7
- LLVM Toolset 13.0.1
- Rust Toolset 1.58.1
To take the experience of RHEL9 follow this download for the free link and download the latest updated RHEL 9 ISO image from the Official Website.
Author:-
Abhijeet Dahatonde
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