[CentOS-announce] Release for CentOS Linux 7 (1503 ) on x86_64

Karanbir Singh kbsingh at centos.org
Tue Mar 31 16:51:24 UTC 2015

We would like to announce the general availability of CentOS Linux 7
(1503) for 64 bit x86 compatible machines.

This is the second major release for CentOS-7 and is tagged as 1503.
This build is derived from Red Hat Enterprise Linux 7.1

As always, read through the Release Notes at :
http://wiki.centos.org/Manuals/ReleaseNotes/CentOS7 - these notes
contain important information about the release and details about some
of the content inside the release from the CentOS QA team. These notes
are updated constantly to include issues and incorporate feedback from
the users.

Updates, Sources, and DebugInfos

This merges in all base, updates, and CR (continuous release) components
released in the month of March 2015. If you have been using the CR repos
on your previous CentOS Linux 7 install, you already have all the
components used to compose this new release.

As with all CentOS Linux 7 components, this release was built from
sources hosted at git.centos.org. In addition, SRPMs that are a
byproduct of the build (and also considered critical in the code and
buildsys process) are being published to match every binary RPM we
release. Sources will be available from vault.centos.org in their own
dedicated directories to match the corresponding binary RPMs. Since
there is far less traffic to the CentOS source RPMs compared with the
binary RPMs, we are not putting this content on the main mirror network.
If users wish to mirror this content they can do so using the reposync
command available in the yum-utils package. All CentOS source RPMs are
signed with the same key used to sign their binary counterparts.
Developers and end users looking at inspecting and contributing patches
to the CentOS Linux distro will find the code hosted at git.centos.org
far simpler to work against. Details on how to best consume those are
documented along with a quick start at : http://wiki.centos.org/Sources

Debuginfo packages are also being signed and pushed. Yum configs shipped
in the new release file will have all the context required for debuginfo
to be available on every CentOS Linux install.

This release supersedes all previously released content for CentOS Linux
7, and therefore we highly encourage all users to upgrade their
machines. Information on different upgrade strategies and how to handle
stale content is included in the Release Notes.

For the CentOS-7 build and release process we adopted a very open
process. The output of the entire buildsystem is made available, as it
is built, at http://buildlogs.centos.org/ - we hope to continue with
that process for the life of CentOS Linux 7, and hope to attempt
bringing CentOS-5 and CentOS-6 builds into the same system.

Release file handling

This release splits the /etc/centos-release from /etc/redhat-release to
better indicate the relationship between the two distributions. There
are also changes to the /etc/os-release file to incorporate changes
needed by the new abrt stack.


In order to conserve donor bandwidth, and to make it possible to get
the mirror content sync'd out as soon as possible, we recommend using
torrents to get your initial installer images:

Details on the images are available on the mirrors at
http://mirror.centos.org/centos/7/isos/x86_64/0_README.txt - that file
clearly highlights the difference in the images, and when one might be
more suitable than the others.

The sizes, sha256 sums and torrents for the ISO files:


! Warning !

 The following images are superseded with newer content and consider reading the updated announce email
 here : http://lists.centos.org/pipermail/centos-announce/2015-April/021010.html

 Affected images:
 * CentOS-7-x86_64-Minimal-1503.iso
 * CentOS-7-x86_64-DVD-1503.iso
 * CentOS-7-x86_64-Everything-1503.iso


* CentOS-7-x86_64-LiveGNOME-1503.iso
  Size: 1124073472

* CentOS-7-x86_64-LiveKDE-1503.iso
  Size: 1310720000

* CentOS-7-x86_64-LiveCD-1503.iso
  Size: 729808896

* CentOS-7-x86_64-NetInstall-1503.iso
  Size: 377487360

The iso files are also available for direct download from

* CentOS 7 1503 Docker Container:  ' docker pull centos' will now give
you the 1503 container image. You can see the official CentOS
Linuxcontainer tags at : https://registry.hub.docker.com/_/centos/

Special Interest Groups

The CentOS Linux distribution is built, managed, and released by the
CentOS Core SIG. In addition, we also have the following SIGs that are
doing an amazing job expanding and building on the base Linux platform:

* Cloud SIG @ http://wiki.centos.org/SpecialInterestGroup/Cloud is
working to deliver various cloud controller infrastructure including
OpenStack. They have a fully functional, feature complete RDO stack now
available for testing with CentOS Linux 7 at

* Cloud Instance SIG @
http://wiki.centos.org/SpecialInterestGroup/CloudInstance aims to
deliver VM images for use in various cloud and virtualised ecosystems
including AWS
and Docker ( https://registry.hub.docker.com/_/centos/ )

 * Virtualization SIG @
http://wiki.centos.org/SpecialInterestGroup/Virtualization includes
upstream virtualization and hypervisor related projects including Xen
http://www.xenproject.org ), oVirt ( http://www.ovirt.org/ ), and Docker
( http://docker.io ). They also work to build and release
support tools around these virtualization technologies.

* Storage SIG @ http://wiki.centos.org/SpecialInterestGroup/Storage
includes the Gluster Project ( http://www.gluster.org/ ), Ceph
(http://ceph.com ), OpenAFS ( http://www.openafs.org ) and the SCST
project ( http://scst.sourceforge.net/ ). Gluster builds for CentOS,
that track upstream community code are available for testing now at

* Software Collections SIG @
http://wiki.centos.org/SpecialInterestGroup/SCLo is working on
documenting and then delivering software collections built for newer
versions of in-distro content. Their aim is to deliver a community and
contributor friendly mechanism for SCL's in an easy to consume format.

* Atomic SIG @ http://wiki.centos.org/SpecialInterestGroup/Atomic is
working on building, maintaining, and delivering a CentOS Atomic host (
http://projectatomic.io ). Testing and development builds including AWS
EC2 instances and Vagrant boxes are now available at

In addition to these, the CentOS Artwork and CentOS Promo SIGs help with
promo content and helping organise Dojos around the world.

SIGs are a great way for people to come together and deliver content
around a specific area into the wider CentOS ecosystem and we welcome
groups to come together with low barriers to entry and plenty of
resources to offer the groups. Details on the process can be found at


We try and organise Dojos in various parts of the world as a one day
event, to bring together people who use CentOS and others who are keen
to learn about CentOS. The day's focus is on sharing technical knowledge
and success stories. It's also a great place to meet and talk about
upcoming technologies and learn how others are using them on CentOS Linux.

In the coming months we hope to host events in London, Bangalore,Sweden,
Germany, Spain, and in many parts of the USA. If you would like to help
organise a Dojo, do drop by the centos-promo list at

Getting Help

The CentOS ecosystem is sustained by community driven help and guidance.
The best place to start for new users is at


This release was made possible due to the hard work of many people,
foremost on that list are the Red Hat Engineers for producing a great
distribution, without them CentOS Linux would look very different.

We are also looking for people to get involved with the QA process in
CentOS, if you would like to join this please introduce yourself on the
centos-devel list (http://lists.centos.org/mailman/listinfo/centos-devel ).


I would also like to thank our donors and sponsors for their continued
support for the project. And to everyone who contributed with ideas,
code, test feedback, and promoting CentOS Linux into the ecosystem.


Karanbir Singh, Project Lead, The CentOS Project
+44-207-0094455 | http://www.centos.org/ | twitter.com/CentOS

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