Red Hat Enterprise Linux (RHEL)

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Red Hat Enterprise Linux (RHEL) is an enterprise Linux operating-system distribution produced and supported by Red Hat.

RHEL provides an operating-system foundation for physical machines, virtual machines, cloud instances, containers, development environments, and production platforms. Organizations commonly use Red Hat Enterprise Linux (RHEL) in enterprise, regulated, and high-assurance environments that require controlled releases, security updates, lifecycle support, and vendor support.

A number following RHEL identifies the applicable major version family. For example, RHEL 9 identifies the Red Hat Enterprise Linux major version 9 family. A further number may identify a minor release within that family.

Within Crucible, RHEL may provide the operating system for a Base Image, Guest Image, Hardened Image, or Capability Image.

enterprise Linux operating-system distribution produced and supported by Red Hat

Generalized from Red Hat product terminology and specialized for the Crucible architecture and operational model.

The acronym RHEL identifies Red Hat Enterprise Linux. A number following the acronym identifies the major version family.

For example:

• RHEL 9 identifies major version 9
• RHEL 9.4 identifies minor release 9.4 within the RHEL 9 family

A reference to RHEL 9 does not necessarily identify a specific minor release. A reproducible build should identify and record the exact release and associated installation media or package sources used.

A Crucible Image Baseline identifies Red Hat Enterprise Linux (RHEL) 9 as the operating-system family and pins the specific installation medium, package repositories, and source revisions used to produce the Machine Image.