Red Hat Training

A Red Hat training course is available for Red Hat Enterprise Linux

Chapter 1. Overview

Product Life Cycle Note

Red Hat Enterprise Linux 6 is now in the Maintenance Support 2 phase of the product life cycle. New functionality and new hardware enablement are not planned for availability in this phase. Red Hat Enterprise Linux 6.9 therefore provides a stable release focused on bug fixes. Subsequent updates will be limited to qualified critical security fixes and business-impacting urgent issues. Please refer to Red Hat Enterprise Linux Life Cycle for more information.

In-place Upgrade

As Red Hat Enterprise Linux subscriptions are not tied to a particular release, existing customers can update their Red Hat Enterprise Linux 6 infrastructure to Red Hat Enterprise Linux 7 at any time, free of charge, to take advantage of recent upstream innovations. To simplify the upgrade to Red Hat Enterprise Linux 7, Red Hat provides the Preupgrade Assistant and Red Hat Upgrade Tool. For more information, see Chapter 2, General Updates.


  • With the addition of TLS protocol version 1.2 support to the GnuTLS component, Red Hat Enterprise Linux 6 offers complete support for TLS 1.2 in the provided security libraries. TLS 1.2 is recommended by modern security standards such as PCI-DSS 3.1. For more information, see Chapter 11, Security.
  • OpenSCAP 1.2.13 has been certified by the National Institute of Standards and Technology’s (NIST) Security Content Automation Protocol (SCAP) 1.2 in the Authenticated Configuration Scanner category with the Common Vulnerabilities and Exposure (CVE) option. For details, see Chapter 11, Security.
  • Cryptographic protocols and algorithms that are considered insecure, such as MD5, SHA0, RC4, or DH shorter than 1024 bits, have been deprecated. In addition, support for EXPORT cipher suites has been removed. For details, see the Red Hat Enterprise Linux 6.9 Technical Notes.

Red Hat Insights

Since Red Hat Enterprise Linux 6.7, the Red Hat Insights service is available. Red Hat Insights is a proactive service designed to enable you to identify, examine, and resolve known technical issues before they affect your deployment. Insights leverages the combined knowledge of Red Hat Support Engineers, documented solutions, and resolved issues to deliver relevant, actionable information to system administrators.
The service is hosted and delivered through the customer portal at or through Red Hat Satellite. To register your systems, follow the Getting Started Guide for Insights. For further information, data security and limits, refer to

Red Hat Customer Portal Labs

Red Hat Customer Portal Labs is a set of tools in a section of the Customer Portal available at The applications in Red Hat Customer Portal Labs can help you improve performance, quickly troubleshoot issues, identify security problems, and quickly deploy and configure complex applications. Some of the most popular applications are, for example: