Read this chapter for information about changes to the functionality or to packages provided in Red Hat Enterprise Linux 7, and changes to the support of said packages.
This section describes notable packages now available in Red Hat Enterprise Linux 7.
Chrony is a new NTP client provided in the chrony package. It replaces the reference implementation (ntp) as the default NTP implementation in Red Hat Enterprise Linux 7. However, it does not support all features available in ntp, so ntp is still provided for compatibility reasons. If you require ntp, you must explicitly remove chrony and install ntp instead.
Chrony's timekeeping algorithms have several advantages over the ntp implementation.
Faster, more accurate synchronization.
Larger range for frequency correction.
Better response to rapid changes in clock frequency.
No clock stepping after initial synchronization.
Works well with an intermittent network connection.
HAProxy is a TCP/HTTP reverse proxy that is well-suited to high availability environments. It requires few resources, and its event-driven architecture allows it to easily handle thousands of simultaneous connections on hundreds of instances without risking the stability of the system.
For more information about
HAProxy, see the man page, or consult the documentation installed along with the haproxy package in the
3.1.6. NFQUEUE (libnetfilter_queue)
Red Hat Enterprise Linux 7.1 provides the libnetfilter_queue package. This library enables the
NFQUEUE iptables target, which specifies that a listening user-space application will retrieve a packet from a specified queue and determine how that packet will be handled.
3.1.7. SCAP Security Guide
The scap-security-guide package provides security guidance, baselines, and associated validation mechanisms for the Security Content Automation Protocol (SCAP). Previously, this package was only available through the EPEL repository (Extra Packages for Enterprise Linux). As of Red Hat Enterprise Linux 7.1, scap-security-guide is available in the Red Hat Enterprise Linux 7 Server (RPMS) repository.
3.1.8. Red Hat Access GUI
Red Hat Access GUI
is a desktop application, which lets you find help, answers, and utilize diagnostic services using Red Hat Knowledgebase, resources, and functionality. If you have an active account on the Red Hat Customer Portal
, you can access additional information and tips of the Knowledgebase easily browsable by keywords. Red Hat Access GUI
is already installed if you select to have the GNOME Desktop installed.
For more information on the benefits, installation, and usage of this tool, see Red Hat Access GUI