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Preface: I just from Redhat Linux 9 to Redhat AS4 study, out of the RHEL5, only learning and learning again, is really a knowledge of the characteristics of RHEL5, if you want to try this operating system can also download to see.
Absrtact: 2007.03.15 Redhat Company released the Rhel5, although friends of his new licensing method quite criticized, after two times jumped the release of the Rhel released or attracted a lot of Linux fans eyes.
RHEL5 Introduction
After two jumps, Red hat officially released RHEL5 on March 14, 2007. RHEL 5 will be Red Hat's commercial server operating
As the fourth major release of the system version, Red hat is brewing the release of Rhel 5 for more than two years, with major changes including the Linux kernel
2.6.9 upgrade to 2.6.18, support Xen virtualization technology, cluster storage and so on.
The RHEL5 version is mainly divided into sever and desktop two versions.
Specifically, the server version is divided into:
? Red Hat Enterprise Linux Advanced Platform-corresponds to the previous? Red Hat Enterprise Linux as
? Red Hat Enterprise Linux-corresponds to the previous Red Hat Enterprise Linux ES
The desktop version is divided into:
? Red Hat Enterprise Linux desktop-corresponds to the previous Red Hat desktop
? Red Hat Enterprise Linux Desktop with Workstation option-corresponds to the previous Red Hat Enterprise
Linux WS
The main features include:
1. Virtualization Technology
Support virtualization technologies on a variety of platforms
Server virtualization technology supporting storage and scaling in red Hat Enterprise Linux Advanced Platform
Red Hat Network provides support for a variety of virtualization systems
Virt-manager, Libvirt/virsh management tools
2. Kernel and performance
Based on the Linux 2.6.18 kernel
Multi-core processor support
Wide range of new hardware support
Updated Kexec/kdump-based dump support
Support for Intel Network Accelerator Technology (ioat)
Enhanced technology for large SMP systems
Enhanced Pipeline Caching
Kernel cache engagement capability for improved IO cache operations
3. Security
SELinux enhancement
Graphical SELinux Management interface
Integrated directory and security mechanisms
Enhanced ipesec for improved safety and performance
New audit mechanism to provide new search, reporting and real-time monitoring capabilities
4. Networking and Interoperability
Supports AutoFS, Fs-cache and iSCSI
Enhanced IPV6 Support
Improved Microsoft? File/print and Active Directory integration
5. Desktop
Updated management tools, applications, and support for notebooks
Improved ACPI support, including suspend to Disk
Smart card login, including Pki/kerberos authentication
Integrated Multimedia Support
Enhanced Plug and Play support
Network Manager provides automatic wired and wireless networking configuration
Graphical interface based on Aiglx/compiz (to support fade, transparency, and other effects)
6. Development environment
Enhanced development tools, including system taps and Frysk
GCC4.1 and glibc 2.5 tool chain
7. Storage
Support for root setting multi-channel IO (MPIO) for increased availability
The red Hat Global File system support for a single system/customer is included in the server product
Block Device Data encryption support
8. Management
Installation process update simplifies system provisioning
Red Hat Network update based on Yum/pup
Conga Cluster and storage management
Content and registration of ISO
The structure of the software component package for the product-related suite differs from previous versions of Red Hat Enterprise Linux. Different kinds of media kits and ISO images are reduced to two types:
Red Hat Enterprise Linux 5 server
Red Hat Enterprise Linux 5 Client
The ISO image contains a large number of optional packages that provide functionality beyond the core distribution version, such as virtualization, clustering, and cluster storage. For more information on server suites, client suites, and optional kits, please refer to.
Because the optional content also exists in the same tree or ISO image, you should pay particular attention to not making the components that are installed and those provided by the subscription mismatched. If this happens, there will be an increase in the likelihood of a system error or security vulnerability.
To ensure that the installed components and subscriptions match, Red Hat Enterprise Linux 5 needs to enter an installation number. It is used to configure the installer to provide the correct package. The installation number is included in your subscription.
If you do not enter an installation number, only the core server or Desktop will be installed. Other features can be manually installed at a later time. For more information on installation numbers, please refer to.
The installation number that is used during the installation process will be stored in the/etc/sysconfig/rhn/install-num. When registering with the Red Hat network, this file is automatically referenced by Rhn_register to determine which appropriate sub-channel the system should subscribe to.
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Redhat Linux 5 Server related introduction
