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CentOS 6.6 Release Notes

Last updated: November 15, 2014

1. Translations

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

2. Introduction

Welcome to the CentOS 6.6 release. CentOS is an Enterprise-class Linux Distribution derived from sources freely provided to the public by Red Hat1.

CentOS conforms fully with Red Hat's redistribution policy and aims to be functionally compatible. CentOS mainly changes packages to remove upstream vendor branding and artwork.

Similar to the practice of the upstream vendor, there is no supported path to 'upgrade' an installation of a prior major CentOS release (presently CentOS 5) to a new major release. This is not a CentOS imposed limitation, but rather reflects the upstream's approach on this matter. People who feel adventuresome and want to experiment are reminded to take and test backups first. As a note to people who attempt the upgrade in spite of this warning, such as by the unsupported upgradeany option from the media install command line, please note that you will need to manually retrieve the current centos-release package, manually do a rpm -e --nodeps removal of the prior centos-release package, and then manually install the CentOS 6 centos-release package, before yum can have any chance of working properly.

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 and sha256sum

sha256sum i386:
3d807eca07de83b0b24340b4dd41dc46cfd3802291d49608f088fd4c94c497f0  CentOS-6.6-i386-bin-DVD1.iso
acb0ff01b3cfe7079877801b36d895a294443a98859d299310d12922c05b86fc  CentOS-6.6-i386-bin-DVD2.iso
a3e9d4e699193f61ad8703d1322676bad416f7e8b3f74cf62a1831cc45703190  CentOS-6.6-i386-minimal.iso
85a327acaa6e1ac7cbecd0b5f94f97808f3e31632e15f50c22377f6c6e9dcd46  CentOS-6.6-i386-netinstall.iso

sha256sum x86_64:
a63241b0f767afa1f9f7e59e6f0f00d6b8d19ed85936a7934222c03a92e61bf3  CentOS-6.6-x86_64-bin-DVD1.iso
89dac78769b26f8facf98ce85020a605b7601fec1946b0597e22ced5498b3597  CentOS-6.6-x86_64-bin-DVD2.iso
5458f357e8a55e3a866dd856896c7e0ac88e7f9220a3dd74c58a3b0acede8e4d  CentOS-6.6-x86_64-minimal.iso
ad8f6de098503174c7609d172679fa0dd276f4b669708933d9c4927bd3fe1017  CentOS-6.6-x86_64-netinstall.iso

4. Major changes

5. Deprecated Features

The following packages were deprecated in CentOS 6.3 and have now been removed from CentOS 6.6:

The following packages have been deprecated and may get removed in future releases. They will no longer receive updates:

6. Known Issues


Note: The POODLE vulnerability is included in the openssl that is provided on the install media. Please run yum update after installation from any install media to get security updates for CentOS-6.6

7. Fixed Issues

8. Packages and Applications

8.1. Packages modified by CentOS

8.2. Packages removed from CentOS that are included upstream

8.3. Packages added by CentOS that are not included upstream

8.4. Packages released as 6.5 updates with older packages on the 6.6 install media

9. Sources

All CentOS sources are now hosted at vault.centos.org:

10. 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.

10.1. Special Interest Groups

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

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

10.2. Mailinglists 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.

10.3. 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. Further Reading

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

12. 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 almost 24/7 we couldn't have released this as fast as we did.

Copyright (C) 2014 The CentOS Project

2023-09-11 07:22