The Design And Implementation Of Kvm-based Virtual Desktop Infrastructure

With the popularity of information technology, the number of terminals in manycompanies is rapidly increasing. However, the traditional PC technology hasn't got anybreakthrough in IT infrastructure management for many years. The traditional PC modehas got many problems: unsafety, scattered data, difficult management, heavy maintenanceworkload and so on. How to solve these problems has become increasingly prominent, andthus, the introduction of desktop virtualization is one of the important ways to solve theseproblems. The core idea of desktop virtualization is based on the principle of "centralizedcomputing, distributed displaying", which can help the enterprise data center process allthe client's operations intensively, while the thin-clients are only responsible for input andoutput interface display and do not participate in any computing and storage.Firstly, the thesis gives the overall planning and design of the KVM-based VDI(virtual desktop infrastructure) and selects SPICE as the remote display protocol. Then thethesis describes a detailed implementation of the three components in VDI architecture: thevirtual-desktop server side, Broker middleware and end-user desktop side, especiallyfocusing on several key components that realized on the server side such as kernel-basedvirtualization management platform KVM, virtualization software QEMU which cansimulate the PC platform, SPICE protocol server, virtual environment management suiteLibvirt(Host Agent) which can support QEMU device's driver, Guest Agent whichprovides the information of the virtual machine to the Broker middleware.Then the thesis introduces a successful application case in XX corp.'s data center.According to the XX corp.'s project background and needs, the thesis gives a hardwareselection and its implementation of the software configuration in the whole VDI solution.With the comparison of normal PC mode, the paper summarizes many benefits obtained bythe enterprises in VDI deployment, and especially analyses the virtualization performanceand ROI(return on investment) through the actual data in the VDI solution. The significance of the thesis is to verify the practical value of VDI solution throughthe application of small and medium enterprises, and the academic value of the thesis isthat the adoption of open source and innovative technology such as KVM, QEMU, Libvirt,SPICE,etc provides a good solution to virtual desktop infrastructure design.