Redhat / CentOS 8.0 News and issues

RHEL 8.0 / CENTOS 8.0

 

Main New Features:

  • Glibc 2.28, BIND 9.11
  • Java 11, icetea-web, ant, maven, scala
  • CMake 3.11, Make 4.21, Gcc 8.2, stace 4.24, Go 1.11.5, Binutils 2.30 (optimization for IBM Z)
  • GNOME Shell, version 3.28 and GDM use Wayland as default
  • Git version changed to 2.18, Mercurial to 4.8 and subversion to 1.10
  • Python 3 support, PHP 7.2 support
  • Ruby 2.5 support, Perl 5.26 support, Node.js new support
  • Apache HTTP Server 2.4.37, nginx web server 1.14, Squid 4.4 and Varnish Cache 6.0
  • The nobody user replaces nfsnobody (user and group pair with the ID of 65534)
  • PostgreSQL 10, PostgreSQL 9.6, MySQL 8.0, and MariaDB 10.3
  • Unicode 11.0.0 support (glibc), GDB debugger version 8.2
  • DNF – YUM (v4) support modular content and Increased performance (v4 is compatible with YUM v3)
  • CUPS logs are handled by journald (the end of the logs: /var/log/cups)
  • Anaconda supports a new kernel boot parameter in RHEL 8, Using RPM interface: 4.14. (old RPM: 4.11)
  • XFS now supports shared copy-on-write data extents (Maximum XFS file system size is 1024 TiB)
  • ext4 file system now supports metadata checksum
  • webconsole with firewall interface, using webconsole by default
  • Changed IdM integration (CA, ssh, etc..) with webconsole 
  • Added support for mobile browsers in webconsole
  • Added support to manage Virtual Machine in webconsole
  • Installing RHEL from a DVD using SE and HMC is now fully supported on IBM Z
  • Anaconda supports a unified ISO in RHEL 8
  • Anaconda can install modular packages in Kickstart scripts
  • RHEL 8 supports installing from a repository on a local hard drive
  • Added new support for ARM 52-bit 
  • Added support to Intel Omni-Path Architecture (OPA)
  • Kernel now supports 5-level page tables (4PB of physical memory, 128PB of virtual address space)
  • Supports enhanced IBRS for future Intel CPUs
  • Active Directory users can now administer Identity Management
  • Identity Management packages are available as a module (yum module install idm:DL1/profile_name command)
  • Added the 64-bit ARM architecture in toolchain components

Some known issues:

Some extra limitations for Wayland with NVIDIA users:

Multi-GPU setups are not supported under Wayland.
The NVIDIA binary driver does not work under Wayland.
The xrandr utility does not work under Wayland
No clipboard manager is available
Use the X11 session for virtual environments. (Wayland inside guest virtual machines)

workaround: 

Set WaylandEnable=false to the file /etc/gdm/custom.conf

 

Special Warning for CentOS/VirtualBox users

If you are planning to install CentOS-8 in a VirtualBox guest, you should not select “Server with a GUI” (default) during the installation

Installing the VirtualBox Addons will produce an error if your version is 6.0.12/5.2.32 or lower. This is fixed with versions 6.0.14 and 5.2.34

PackageKit is unable to resolve local DNF/YUM variables

CentOS 8 in VirtualBox 5.2.32 (graphical install screen problem):

using the vbox Host key + 2 to switch to VT 2 and then vbox Host key + 6 to switch back to the graphical install screen.