[BESAdmin-Announcements] IBM BigFix Patch: Pre-Announcement: Supersedence Logic on CentOS Fixlets to be Updated on February 14, 2017

Announcements for BES Administrators besadmin-announcements at bigmail.bigfix.com
Fri Feb 10 01:24:22 PST 2017

The BigFix Patch team continuously aims to provide enhancements to the 
patching content with improved usability, accuracy, and reliability of the 
available Fixlets.

The supersedence logic used on Fixlets for the CentOS 5, CentOS 6 and 
CentOS 7, which is based on Red Hat's Errata information, is going to to 
be updated with a package-based supersedence logic implementation on 
February 14, 2017.

Why is the supersedence logic being changed?
The main reason for the change is to improve Fixlet accuracy by ensuring 
supersedence only on Fixlets that contain superseded packages. 
Additionally, changes are made in line with Red Hat's interface shift from 
Red Hat Network (RHN) hosted to Red Hat Subscription Management (RHSM) 
that is happening in July 2017.

What is being changed in the supersedence logic?
The new supersedence logic works by inspecting the packages in a Fixlet. 
If the Fixlet conditions match the set criteria for supersedence, only 
then will it be marked as superseded.
This enhancement reduces the occurrence of false positives whereby the 
Fixlet supersedence logic is incorrectly processed. After the update, 
previously superseded Fixlets may show as relevant and vice versa.

How does the new supersedence logic impact you?
If you are using Fixlet applicability as a means to measure patching 
compliance, your compliance level may be affected when the enhancements 
are released on February 14, 2017.
However, the Fixlet supersedence and relevance results will be more 
accurate and would help reduce patching time by applying only the relevant 

Sites to be Published:
Patches for CentOS 5 Native Tools site
Patches for CentOS 6 Native Tools site
Patches for CentOS 7 site

Actions to Take After the Update:
Sync your baselines and custom sites to ensure that they match with the 
Fixlets in the external sites.
Review the CentOS content and apply the latest Fixlets that are relevant.

Additional References:
BigFix announcement on RHN Classic's EOL: https://ibm.biz/BdsTey
Red Hat's Announcement on the RHN Classic to RHSM Transition: 

Application Engineering team 
IBM BigFix Patch

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