Design And Implementation Of The Office Desktop Cloud System Based On QEMU-KVM

With the rapid development of information technology,more and more enterprises have purchased a large number of computer terminal equipment in order to solve the needs of information development.With the increase of computers and the exposure of many problems,maintenance managers need to do a lot of repetitive work,management costs are increased,user needs are not responded in time,data is too dispersed,and security is not guaranteed.How to unified management of desktops and centralized storage of data has become one of the urgent tasks for enterprises.Desktop cloud technology based on VDI architecture has solved these problems well.The desktop cloud uses the server virtualization technology to cloud the user desktops.All the user virtual desktop environments and data are stored centrally on the server.The virtual desktop environment on the server is centrally operated and managed,and the server resources are used for computing,and decoupling the terminal and the desktop environment.Users use their own virtual desktops over the network.Management personnel only need to manage and maintain the virtual desktop environment on the server,greatly reduced operation and maintenance time,improve the office efficiency,save the enterprise cost,and store the data centrally on the server,and the data security is better protected.The major work includes:First of all,research on key technologies of desktop cloud.Research the QEMU-KVM virtualization technology,the focus of QEMU-KVM on CPU virtualization,memory virtualization and I / O device virtualization implementation works.Research on open source SPICE desktop transfer protocol and its implementation principle,analysis of the inadequacies of the SPICE protocol,summarizes the key factors affecting the performance of desktop transport protocols,after studying the working principle of RDP desktop transmission protocol data transmission.On the basis of completing the above theoretical and technical research,design a desktop cloud system for enterprise office.The underlying virtualization technology of the system adopts QEMU-KVM virtualization technology,and the desktop transmission protocol is implemented by combining SPICE transmission protocol and RDP desktop transmission protocol.Detail analysis of system functional requirements and non-functional requirements through research,after that design the overall architecture of the system,the overall functional modules,the system class diagram,and system database.To achieve the enterprise information management module,control module,image management module,network management module,individual functional modules and features such as RDP,SPICE login virtual machine.Finally,the system function and performance test are carried out,and analyze the test results.Test results show that the system can improve business efficiency.