Making sense of the RHEL release string when looking at yum info output?

ams asked:

I am trying to understand how interpret the release field displayed by yum info on RHEL 6. for example the commands below give wildly different values for Relase, what exactly is release refering to, the RHEL server release, the package release?

# yum info java-1.7.0-openjdk.x86_64
Loaded plugins: product-id, rhnplugin, security, subscription-manager
Updating certificate-based repositories.
Unable to read consumer identity
Available Packages
Name        : java-1.7.0-openjdk
Arch        : x86_64
Epoch       : 1
Version     : 1.7.0.5
Release     : 2.2.1.el6_3.3
Size        : 25 M
Repo        : rhel-x86_64-server-6
Summary     : OpenJDK Runtime Environment
License     : ASL 1.1 and ASL 2.0 and GPL+ and GPLv2 and GPLv2 with exceptions
Description : The OpenJDK runtime environment.

# yum info java-1.7.0-oracle.x86_64
Loaded plugins: product-id, rhnplugin, security, subscription-manager
Updating certificate-based repositories.
Unable to read consumer identity
Available Packages
Name        : java-1.7.0-oracle
Arch        : x86_64
Epoch       : 1
Version     : 1.7.0.7
Release     : 1jpp.5.el6_3
Size        : 38 M
Repo        : rhel-x86_64-server-supplementary-6
Summary     : Oracle Java Runtime Environment
License     : Oracle Binary Code License Agreement for the Java SE Platform Pr
Description : The Java Runtime Environment (JRE) contains the software and tools
            : that users need to run applets and applications written using the Java
            : programming language.

# yum info httpd
Loaded plugins: product-id, rhnplugin, security, subscription-manager
Updating certificate-based repositories.
Unable to read consumer identity
Installed Packages
Name        : httpd
Arch        : x86_64
Version     : 2.2.15
Release     : 15.el6_2.1
Size        : 2.9 M
Repo        : installed
From repo   : rhel-x86_64-server-6
Summary     : Apache HTTP Server
URL         : http://httpd.apache.org/
License     : ASL 2.0
Description : The Apache HTTP Server is a powerful, efficient, and extensible
            : web server.

My answer:


The Release field of an RPM is set by whoever created the package, usually the developer working on packaging it. The format is completely arbitrary, and one does not necessarily have any relation to another.

That said, Red Hat will always put el# or el#_# in their Release field, indicating the major and minor versions of RHEL for which the package was built.


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