Features of a Linux-VServer
Submitted by Cryobanks on Wed, 2012-02-22 10:07
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A virtual private server or VPS hosting provides an almost similar operating environment as a conventional Linux Server. Each virtual server has its unique user account database and root password and is separated
Over the years, computers have become adequately powerful to use virtualization to create the illusion of many smaller virtual machines, each running a separate operating system instance.
At a basic level, a Linux Server comprises of three building blocks: Hardware, Kernel and Applications. The basic notion of the Linux-VServer solution is dedicated server hosting separate the user-space environment into different units also called Virtual Private Servers in a way that each VPS looks and feels like a real server to the processes contained within.
Linux-VServer is a virtual private server execution that was formed by adding operating system-level virtualization abilities to the Linux kernel. It is developed and distributed as open source software.
Linux-VServer can be used to securely divide resources on a computer system like the file system, CPU time, network addresses and memory, in such a manner that processes cannot build up a denial-of-service attack on anything outside their partition. virtual private server it is also termed as jail mechanism.
Virtual private servers are commonly used in web hosting services, where they are utilize for dividing customer accounts, collecting resources and curbing nay possible security violations.
Some of the advantages of Linux-V Server are as follow.
Virtual servers share the same system call interface and do not have any emulation overhead.
Virtual servers do not have to be supported by unclear disk images, but can share a common file system and common sets of files. This makes it simpler to back up a system and to share disk space amongst virtual servers.
Processes within the virtual server run as regular processes on the host system
Processes within the virtual server are lined up on the same scheduler as on the host, allowing guests processes to run at the same time as on SMP systems.
Networking is based on isolation rather than virtualization, so there is no additional operating cost for packets.
The Linux Virtual Server is a highly accessible server built on a cluster of real servers, with the load balancer running on the Linux operating system. The architecture of the server cluster is fully transparent to end users, and the users interact as if it were a single high-performance virtual server.
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