Red Hat Enterprise Linux 5
Red Hat Enterprise Linux minor releases are an aggregation of individual enhancement, security and bug fix errata. The Red Hat Enterprise Linux 5.5 Release Notes documents the major changes made to the Red Hat Enterprise Linux 5 operating system and its accompanying applications for this minor release. Detailed notes on all changes in this minor release are available in the Technical Notes.
Highlights of the Red Hat Enterprise Linux 5.5 release include hardware enablement for the Intel Boxboro-EX platform, AMD Magny-Cours processor and IBM Power 7 processor. Virtualization is improved, with support for multiple 10 GigE SR-IOV cards, and automatic usage of hugepages for virtual guest memory when enabled on the system. Interoperability improvements include updates to OpenOffice for Microsoft Office 2007 filters, Samba for Windows 7 compatibility and boot support for virtual machines using Microsoft based PXE services.
Red Hat Enterprise Linux 5.5 introduces many bugfixes and enhancements to the system installer (anaconda).
The interactive installer has been enhanced, adding the abilty to specify additional Network File System (NFS) mount options when installing from an NFS source (BZ#493052
). Additionally, install sources (e.g. kickstart files) located on password protected File Transport Protocol (FTP) servers can now be retrieved during installation (BZ#505424
Kickstart provides a way for users to automate a Red Hat Enterprise Linux installation. Using kickstart, a system administrator can create a single file containing the answers to all the questions that would normally be asked during a typical installation.
Kickstart debugging and error reporting has been improved. The installer now retains kickstart scriptlets during debugging, logs standard output
) and standard error
) streams, and logs error messages to
Package groups can now be excluded in a kickstart installation in the same manner that individual packages are excluded (BZ#558516
). Additionally, the
command now supports the
parameter, allowing Xen hypervisor arguments to be specified during a kickstart installation (BZ#501438
Previously, the kickstart installation method offered two options to select all packages
(wildcard). As of Red Hat Enterprise Linux 5.5, both of these options have been deprecated
. Attempting to use a select all packages option will fail, unless the kickstart file also includes package negation for conflicting packages. Therefore, to install all packages but conflicting packages, the kickstart file must contain:
Red Hat Enterprise Linux 5.5 includes the new package sets samba3x, freeradius2, postgres84. These package sets are only available via kickstart during system installation or through yum for existing systems.
The following device drivers are now supported during installation:
driver for PMC Sierra MaxRAID Controller Adapters (BZ#532777
driver for Power6 Virtual FC devices (BZ#512237
driver for Brocade Fibre Channel to PCIe Host Bus Adapters (BZ#475707
driver for ServerEngines BladeEngine 2 Open iSCSI devices (BZ#529442
For detailed information on installation, the Installation Guide
documents how to install Red Hat Enterprise Linux 5.