Red Hat enterprise Linux version 5.2 has been released and available via a Red Hat Network subscription. This update brings broad refresh of hardware support and improved quality, combined with new features and enhancements in areas such as virtualization, desktop, networking, storage & clustering and security.
Virtualization of very large systems, with up to 64 CPUs and 512 GB of memory, is now possible. Virtualization support for NUMA-based architectures is provided, as well as security, performance, manageability and robustness improvements. CPU frequency scaling support for virtualized environments also allows for reduced power consumption.
Red Hat Enterprise Linux 5.2 provides enhanced capabilities for several hardware architectures, covering x86/x86-64, Itanium, IBM POWER and IBM System z, which provide improved performance, power usage, scalability and manageability. For example, support for Intel's Dynamic Acceleration Technology permits power saving by quiescing idle CPU cores, and offers performance gains by potentially overclocking busy cores within safe thermal levels. Other hardware enhancements include extensive device driver updates, covering storage, network and graphics devices, and certification of IBM's new Cell Blade systems.
Red Hat Enterprise Linux becomes a certified operating system for IBM's new high-performance blade server based on Cell Broadband Engine (Cell/B.E) Architecture.
Desktop version includes latest cutting edge softwares:
- Evolution 2.12.3
- Firefox 3
- OpenOffice 2.3.0
- Thunderbird 2.0
Red Hat Cluster Suite, which is included in Red Hat Enterprise Linux 5 Advanced Platform, now has a Resource Event Scripting Language that enables sophisticated application failover capabilities. It also newly supports SCSI-3 reservation fencing support for active/active and active/passive DM/MPIO (multipathing), which widens the range of storage devices that can be used in clusters.
Improved iSCSI support allows users to set-up diskless systems with a root volume on the iSCSI server, a common requirement in high-density Blade environments.
How do I upgrade my system?
First, make sure you backup existing configuration and data. Next, simply type the following two commands:
# yum update
Verify that everything is working fine including all services:
# netstat -tulpn
# netstat -nat
# tail -f /var/log/messages
# egrep -i 'error|warn' /var/log/messages
# egrep -i 'error|warn' /path/to/apps/log/file
Alternatively, you can click on the "Red Hat Network Alert Notification GUI Tool" - which is a notifier that appears on the panel and alerts users when software package updates are available for the systems. This is point and click method.
If you are CentOS Linux user wait for some time to get all updates. More information available at Red Hat web site.