Red Hat has announced the release of the new version of the distribution «Red Hat Enterprise Linux 8.3«, Version that goes so far as to show thate branch 8.x is evolving according to a new predictable development cycle, which means that versions are generated every six months at a predetermined time.
RHEL's New Product Development Cycle encompasses multiple layers, including Fedora as a springboard for new capabilities, CentOS Stream for package access for the next interim release of RHEL (RHEL mobile variant), a minimalist Universal Base Image (UBI) for running applications in isolated containers, and the RHEL Developer Subscription to use RHEL for free during development.
What's New in Red Hat Enterprise Linux 8.3
In this new version experimental support continued (Technology Preview) for nmstate, AF_XDP, XDP, KTLS, dracut, kexec fast reboot, eBPF, igc, NVMe over TCP / IP, DAX on ext4 and xfs, OverlayFS, Stratis, DNSSEC, GNOME on ARM, AMD SEV systems for KVM , Intel vGPU.
In the GNOME Classic environment, the virtual desktop switch button has been moved to the lower right corner and is designed as a strip of thumbnails.
The graphics subsystem DRM (Direct Rendering Manager) is synced with Linux kernel version 5.3.
The osbuild-composer backend has been replaced. Supported image types include TAR (.tar), QEMU QCOW2 (.qcow2), VMware Virtual Machine Disk (.vmdk), Amazon Machine Image (.ami), Azure Disk Image (.vhd), and OpenStack Image (.qcow2) . Ext4, partitioned disk, Alibaba Cloud and Google GCE are not available yet. Added the ability to place an image in the cloud.
Modules with new branches GCC 10, LLVM 10, Rust 1.43, nginx 1.18, Node.js 14, Perl 5.30, PHP 7.4, Ruby 2.7 have been added to the AppStream repository. Updated packages for Git 2.27, Go 1.14.4, Python 3.8.3, and Squid 4.11.
The installer of Anaconda has been updated to version 33.16.3.1, which implements sector size display for NVDIMM, improved IPv6 configuration, allowed to use non-ASCII characters in password for disk encryption, showed correct recommendations to choose FS for / boot, / tmp, / var and / usr, LUKS2 se used by default for encrypted containers.
In the summary information window, it is possible to set a password for root and create a new user at the stage prior to the start of the installation (previously, these steps were performed after the start of the installation).
By default, the use of Intel TSX (Transactional sync extensions) is disabled, It provides tools to improve the performance of multithreaded applications by dynamically eliminating unnecessary synchronization operations.
Extensions are disabled due to the possibility of Zombieload attacks that manipulate information leaks through side channels that occur when the asynchronous abort mechanism (TAA, TSX Asynchronous Abort) is running. To enable TSX support, load the kernel with the "tsx = on" parameter.
Also, we can find the updated versions of NetworkManager 1.26.0, bind 9.11, samba 4.12, gnutls 3.6.14 (with OCSP stapling support), USBGuard 0.7.8 (with support for GUI notifications), smartmontools 7.1, Libreswan 3.32 (now SHA-2 and RSA-PSS are used instead of SHA-1 and RSA-PKCS v1.5, support for XFRMi virtual interfaces has been added), powertop 2.12 (with support for Intel Comet Lake, Skylake and Jasper Lake), fine-tuned 2.14. 0 (optimized serial console profile and added irqbalance plugin, as well as optimizations for Marvell ThunderX and AMD systems), tcpdump 4.9.3, libpcap 1.9.1, memcached 1.5.22, libssh 0.9.4, stunnel 5.56, libkcapi 1.2 0 , setools 4.3.0, OpenSCAP 1.3.3, scap-security-guide 0.1.50, clevis 13, fapolicyd 1.0, libseccomp 2.4.3, firewalld 0.8.2, tpm2-tools 4.1.1, pacemaker 2.0.4, krb5 1.18.2 .2.1, OpenDNSSEC 1.10.1, tigervnc XNUMX.
As well It is highlighted that work continued to stabilize the eBPF subsystems. Added full support for libbpf. In RHEL 8.3, the following are declared stable: BCC (BPF Compiler Collection) library and toolkit for creating BPF tracing and debugging programs, eBPF support in tc (Traffic Control) for classifying packets and processing incoming queues and outgoing. The bpftrace and eXpress Data Path (XDP) components remain in the Technology Preview stage.
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The installation images have not yet been formed at the moment, but it is promised that they will be ready next week for the x86_64, s390x (IBM System z), ppc64le and Aarch64 architectures.
If you want to know more about it, you can check the details In the following link.