Application of Linux and open source code in cloud computing

Cloud computing and storage convert physical resources (such as processors and storage) into scalable and shared resources on the Internet ("as a service" for computing and storage ). Although virtualization is not a new concept, physical system sharing through server virtualization can indeed increase resource scalability and efficiency. Cloud computing allows users to access large-scale computing and storage resources without having to know the locations of those resources and how they are configured. As you expected, Linuxreg; plays an extremely important role here. Explore the mysteries of cloud computing.

Recently, no technical website mentioned cloud computing. Cloud computing actually provides computing resources (computers and storage) in the form of services ). This involves dynamically extending services to more computers and storage capabilities in a simple and transparent way. All these are similar to the ideas behind utility computing. In utility computing, computing resources are considered as metering services, just like more traditional public facilities (such as water or electricity. Their difference lies not in the goals behind these ideas, but in the combination of these ideas to make them a reality of the existing technology.

One of the most important concepts behind cloud computing is scalability, and the key to achieving it is virtualization ). Virtualization aggregates multiple operating systems and applications on a shared computer to make better use of the server. Virtualization also allows online migration. Therefore, when a server is overloaded, an instance of an operating system (and its applications) can be) migrate to a new, less busy server.

From the external perspective, cloud computing only migrates computing and storage resources from the enterprise and to the cloud. Users define Resource requirements (such as computing and Wan and bandwidth requirements). cloud providers Virtualize these components in their infrastructure.

Cloud computing migrates resources over the Internet. The goal of cloud computing is to make these resources cheaper than what you can provide and manage. In addition to reducing costs, cloud computing also has greater flexibility and scalability. Cloud computing providers can easily expand virtual environments to provide larger bandwidth or computing resources through the provider's virtual infrastructure.

The advantage of cloud computing in environmental protection is that it can Virtualize and share resources between different applications to improve server utilization. Shows an example. In this example, different applications use three independent platforms, and each application runs on its own server. In the cloud, you can share (virtualized) servers between multiple operating systems and applications to reduce the number of servers. Less servers mean less space (less space occupied by data centers) and less power for cooling (less carbon footprint ).

Virtualization and resource usage

 

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