| With the continuous development of network technology and virtualization technology, a kind of computing mode of the resource which can be provided by the Internet in order to provide a dynamic scalable resource is gradually into people's life, for example:Baidu cloud disk, cloud TV, cloud mobile phone, etc.. Cloud computing, a new area, is based on the increase in Internet related services, the use and delivery models, usually involving the Internet to provide dynamic and easy to expand and often is the virtualization of resources. In the 60's in the morning, Mccarthy has proposed the idea that the computing power is a kind of public utility, such as water and electricity, which is the origin of cloud computing.From 2006 Google CEO Schmidt Eric first proposed the concept of cloud computing (Computing Cloud) in the search engine, cloud computing has become a very popular research direction in the field of IT in recent years. Cloud computing is also called cloud services, because it is a service model; from the perspective of user experience, cloud computing is mainly divided into services (IaaS), such as:Rackspace, EC2 Amazon, Linode, Blue bluemix, such as:, IBM, Saas, Paas Google windows, App engine, Azure Platform, SaaS is our contact, users need to access the Internet and through the browser to enjoy software services, such as Chrome Google App Zimbra is one of the representatives, as well as Zoho, Google, etc.Due to the emergence of cloud computing, the use of IT resources is more reasonable, efficient and can quickly release the characteristics of repeated use, many companies are ready to build their own private cloud platform. At present, many of the open source Iaas projects are mostly from the successful experience of AWS, and one of the most influential is the Openstack project. This also makes the enterprise according to their own business needs and hardware resources, the flexibility to build a private cloud platform has become possible. |
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