CentOS-7 (1611) Release Notes

Last updated: December 21, 2016

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 fourth CentOS-7 release. The CentOS Linux distribution is a stable, predictable, manageable and reproducible platform derived from the sources of Red Hat Enterprise Linux (RHEL)1.

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.

The continuous release (CR) repository makes generally available packages that will appear in the next point release of CentOS, on a testing and hotfix basis until formally released. 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.

Live media images are also available, both for Gnome and KDE desktop environments. These allow you to test out CentOS by booting from the DVD or USB stick. The third livecd image uses Gnome, and as the livecd name implies, it is small enough to fit on a CD. This image does not contain libreoffice. 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-7, 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 1024 MB RAM is required to install and use CentOS-7 (1611). When using the Live ISOs for install, 1024 MB RAM produces very slow results and even some install failures. At least 1280 MB RAM is recommended for LiveCD installs and at least 1344 MB RAM is recommend for LiveGNOME or LiveKDE installs.

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:
c455ee948e872ad2194bdddd39045b83634e8613249182b88f549bb2319d97eb  CentOS-7-x86_64-DVD-1611.iso
af4969ebbdc479d330de97c5bfbb37eedc64c369f009cb15a97f9553ba441c88  CentOS-7-x86_64-Everything-1611.iso
8af6ad70c35c9b65e7ca88b38d18bed14598eb122169c1a22fc3f5b1c2de7d87  CentOS-7-x86_64-LiveGNOME-1611.iso
b584dd3cf2e287756aa6f6ec0f287500470b7e588b605211981b3b9ad09abac9  CentOS-7-x86_64-LiveKDE-1611.iso
27bd866242ee058b7a5754e83d8ee8403e216b93d130d800852a96f41c34d86a  CentOS-7-x86_64-Minimal-1611.iso
f2f7367deb90a25822947660c71638333ca0eceeabecc2d631be6cd508c24494  CentOS-7-x86_64-NetInstall-1611.iso

5. Major Changes

<!> Because of these rebases some 3rd party repositories (Like EPEL, ELRepo, nux!, etc.) may not have all their packages rebuilt to use the newer packages in this release. This may cause the inability to update to the new release until those repositories fix their dependencies. You should contact the 3rd party repository owner to get problems fixed, or remove problem packages from 3rd party repositories to complete the update to this release.

More information can be found at https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/7.3_Release_Notes/index.html.

6. Deprecated Features

The following packages are deprecated with the release of 7.3(1611):

More can be found here.

7. Known Issues

A list of known upstream issues can be found here. Given that we build from the same sources, many if not all of those issues will likely also apply to CentOS Linux. You can also find information on notable updates here.

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

9.4. Packages released as 7.2.1511 updates with older packages on the 7.3.1611 install media

10. Sources

All CentOS-7 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/7/

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):

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

11.2. Mailing Lists and Fora

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 fora.

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.

12. Further Reading

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

Copyright (C) 2016 The CentOS Project


Manuals/ReleaseNotes/CentOS7 (last edited 2017-01-02 14:28:35 by TimothyLee)