You would like to setup a Linux server which is free, open source, stable, rock-solid, enterprise class and Red Hat-based operating system, the CentOS Linux will be the best choice. Typical CentOS users are organisations and individuals that do not require strong commercial support in order to achieve successful operation. CentOS is 100% compatible rebuild of the Red Hat Enterprise Linux, in full compliance with Red Hat's redistribution requirements. CentOS is developed by a small but growing team of core developers.
An important difference between CentOS and Red Hat Enterprise Linux, RHEL to us lowly users is that RHEL 5 comes in two editions: Server and Desktop, which are managed via up2date, but CentOS no longer includes, and they have their own separate repositories that require registration keys to access. Because of CentOS is free, it makes no sense to maintain separate repos, so they don't. No hassles with registration keys; since everything is available from a single source.
After installation there is a refreshing lack of drama. but It just works. Some users claim that their CentOS 4 servers that have not been restarted in over a year; they just keep running. The CentOS team promise a long support cycle for every release. CentOS 3 will receive maintenance updates until 2010, CentOS 4 until 2012, and probably 2014 for CentOS 5.
One of the biggest changes in CentOS 5 is the inclusion of the Xen virtualization technology. Virtualization allows multiple operating systems (known as guests) to run on a single server at the same time. Essentially it lets you run a virtual PC or server on your host server that shares its CPU and memory. You can choose whether to include the virtualization packages during the installation. Using Xen, a server can run multiple copies of CentOS 5 on the same hardware. If your CPU supports hardware virtualization (with Intel VT or AMD SVM technologies), then you can also host arbitrary, unmodified guest operating systems, such as Windows.
Why not use Fedora? RHEL is based on Fedora, they use the stable packages of old Fedora releases. Fedore is always use released new package and it include the latest ideas and solutions, cause that Fedora is not always a stable OS. RHEL/CentOS are based on well-tested packages, so it is much more stable and the packages do not change so often. RHEL/CentOS, new features and packages are a sometimes added to the stable release (think of this as of service-packs).
An important difference between CentOS and Red Hat Enterprise Linux, RHEL to us lowly users is that RHEL 5 comes in two editions: Server and Desktop, which are managed via up2date, but CentOS no longer includes, and they have their own separate repositories that require registration keys to access. Because of CentOS is free, it makes no sense to maintain separate repos, so they don't. No hassles with registration keys; since everything is available from a single source.
After installation there is a refreshing lack of drama. but It just works. Some users claim that their CentOS 4 servers that have not been restarted in over a year; they just keep running. The CentOS team promise a long support cycle for every release. CentOS 3 will receive maintenance updates until 2010, CentOS 4 until 2012, and probably 2014 for CentOS 5.
One of the biggest changes in CentOS 5 is the inclusion of the Xen virtualization technology. Virtualization allows multiple operating systems (known as guests) to run on a single server at the same time. Essentially it lets you run a virtual PC or server on your host server that shares its CPU and memory. You can choose whether to include the virtualization packages during the installation. Using Xen, a server can run multiple copies of CentOS 5 on the same hardware. If your CPU supports hardware virtualization (with Intel VT or AMD SVM technologies), then you can also host arbitrary, unmodified guest operating systems, such as Windows.
Why not use Fedora? RHEL is based on Fedora, they use the stable packages of old Fedora releases. Fedore is always use released new package and it include the latest ideas and solutions, cause that Fedora is not always a stable OS. RHEL/CentOS are based on well-tested packages, so it is much more stable and the packages do not change so often. RHEL/CentOS, new features and packages are a sometimes added to the stable release (think of this as of service-packs).
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