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CentOS-8 (1905) Release Notes - This page is work in progress and does not mean that CentOS 8 is ready for release or anything like it. It means we've started writing release notes for it, in preparation for when it is ready...

Last updated: August 18, 2019

1. Translations

Translations of these release notes are available for the following languages:

2. Introduction

The CentOS Project does not provide any verification, certification, or software assurance with respect to security for CentOS Linux. The Security Profiles provided in the CentOS Linux installers are a conversion of the ones included in RHEL Source Code. If certified / verified software that has guaranteed assurance is what you are looking for, then you likely do not want to use CentOS Linux. See this link if you plan to use Security Profiles.

Hello and welcome to the first CentOS-8 release. The CentOS Linux distribution is a stable, predictable, manageable and reproducible platform derived from the sources of Red Hat Enterprise Linux (RHEL)1. You can read our official product announcement for this release.

CentOS conforms fully with Red Hat's redistribution policy and aims to have full functional compatibility with the upstream product. CentOS mainly changes packages to remove Red Hat's branding and artwork.

We have decided not to follow Red Hat's usage of Installation Roles. In CentOS Linux all content from every distribution 'channel' is made available to the user at time of installation.

Please read through the other sections before trying an install or reporting an issue.

3. Install Media

Various installation images are available for installing CentOS. Which image you need to download depends on your installation environment. All of these images can either be burned on a DVD or dd’ed to an USB memory stick.

If you are unsure which image to use, pick the DVD image. It allows selecting which components you want to install and contains all packages that can be selected from the GUI installer. The 'Everything' image is more than twice the size of the ordinary DVD and is not required for most common installs - it is intended for use by sysadmins who want to run their own local mirror. Using the Everything image does not give you more options for package selection within the installer.

Live media images are available for Gnome desktop environment. These allow you to test out CentOS by booting from the DVD or USB stick. You can also install CentOS to your hard disk from the live media images, but please note that what gets installed on your hard disk is exactly the same as you see when using the live media. For more flexibility in selecting which packages you want to have installed, please use the DVD image.

The netinstall image can be used for doing installs over network. After booting the computer with the netinstall image, the installer will ask from where it should fetch the packages to be installed.

The everything image contains all the packages that are available for CentOS-8, including those that are not directly installable from the installer. If you want to install those other packages, you must mount the install media on your installed system after the installation, and copy or install the packages from there. For most users installing from the DVD image and then installing the other packages with ”yum install <packagename>” instead is probably easier.

[Bug 8353]

Attention
At least 2 GB RAM are required to install and use CentOS-8 (1905). When using the Live ISOs for install, that amount produces very slow results and even some install failures. At least 4 GB RAM is recommended for LiveGNOME install. This is also valid for full installations.

4. Verifying Downloaded Installation Images

Before copying the image to your preferred installation media you should check the sha256sum of the downloaded installation images.

sha256sum x86_64:

5. Major Changes

6. Deprecated Features

7. Known Issues

A list of known upstream issues can be found in the RHEL 8.0 release notes. Given that we build from the same sources, many, if not all, of those issues will likely also apply to CentOS Linux.

If you are planning to install CentOS-8 in a VirtualBox guest, you should not select "Server with a GUI" (default) during the installation. See this Red Hat article for details.

8. Fixed Issues

9. Packages and Applications

9.1. Packages modified by CentOS

9.2. Packages removed from CentOS that are included upstream

9.3. Packages added by CentOS that are not included upstream

  • centos-indexhtml
  • centos-logos
  • centos-release

10. Sources

All CentOS-8 sources are hosted at git.centos.org. All code released into the distribution originated from git.centos.org.

Source RPMs will also be published once the release is done, in the usual location at http://vault.centos.org/centos/8/

From a CentOS machine you can easily retrieve sources using the yumdownloader --source <packagename> command.

11. How to help and get help

As a CentOS user there are various ways you can help out with the CentOS community. Take a look at our Contribute page for further information on how to get involved.

11.1. Special Interest Groups

CentOS consists of different Special Interest Groups (SIGs) that bring together people with similar interests. The following SIGs already exist (among others):

  • Artwork - create and improve artwork for CentOS releases and promotion

  • Promotion - help promoting CentOS online or at events

  • Virtualization - unite people around virtualization in CentOS

And we encourage people to join any of these SIGs or start up a new SIG, e.g.

  • ARM, PPC and i386 port - help with porting CentOS to other architectures
  • Hardware compatibility - provide feedback about specific hardware
  • RPM Packaging - contribute new useful RPM packages
  • Translation - help translating the documentation, website and Wiki content

11.2. Mailing Lists and Forums

Another way you can help others in the community is by actively helping and resolving problems that users come up against in the mailing lists and the forums.

11.3. Wiki and Website

Even as an inexperienced CentOS user we can use your help. Because we like to know what problems you encountered, if you had problems finding specific information, how you would improve documentation so it becomes more accessible. This kind of feedback is as valuable to others as it would have been to you so your involvement is required to make CentOS better.

So if you want to help out and improve our documentation and Wiki, register on the Wiki or subscribe to the centos-docs mailing list.

11.4. IRC Presence

The CentOS project maintains a presence on the freenode IRC network as an additional venue for community support and interaction. Please see our IRC wiki article for more information.

12. Further Reading

The following websites contain large amounts of information to help people with their CentOS systems:

13. Thanks

We thank everyone involved for helping us produce this product and would like to specifically acknowledge the extra effort made by the QA Team. Without them working lots and lots of hours in evenings, nights, weekends and holidays, we couldn't have released this Release in the time we did. A special thanks also goes to the CentOS-community. A more complete list of the contributors to this release can be found at /usr/share/doc/centos-release/Contributors of your new CentOS-8 installation.

Copyright (C) 2019 The CentOS Project


Manuals/ReleaseNotes/CentOS8.1905 (last edited 2019-08-18 16:02:44 by AnssiJohansson)