CN103888530A - Experiment teaching system based on cloud desktop - Google Patents
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Abstract
The invention discloses an experiment teaching system based on a cloud desktop. The experiment teaching system based on the cloud desktop comprises a virtualized server resource pool, wherein a plurality of physical servers are arranged inside the virtualized server resource pool; each physical server is provided with a plurality of virtual machines; a cloud desktop experimental terminal is connected with the physical servers in the virtualized server resource pool through a desktop net interchanger; a main management server is connected with the physical servers through a management net interchanger and is further connected with the desktop net interchanger; a storage server is connected with the physical servers through a storage net interchanger; the physical servers is connected with at least one application server through an application net interchanger. The cloud desktop remote access and the virtual machine technology are utilized, hardware cost and maintenance cost are effectively lowered, and the resource utilization rate is improved. The cloud desktop experimental terminal is low in configuration demand and high in universality and flexibility. The standardization and refinement of the experiment teaching process are improved, safety is high, and the supervision and administration capacity of experiment teaching is enhanced.
Description
Technical field
The present invention relates to a kind of experiment teaching system based on cloud desktop.
Background technology
At present, most of colleges and universities have completed the construction of network infrastructure aspect informatization, realize the interconnected of the interconnected and campus network of campus network inside and Internet, under this environment, the center of gravity of University Informatization shifts to aspects such as machine room, laboratory, multimedia classroom constructions gradually.
Aspect machine room, laboratory, multimedia classroom construction, colleges and universities adopt traditional computer to dispose pattern substantially at present, are each demand point and are equipped with a computer hardware equipment and corresponding software systems.Machine room, the laboratory that need to make different soft and hardware environment due to different majors, the content of courses that same specialty is constantly updated also often needs to constantly update the equipment in machine room, laboratory, and computer resource is limited, the computer course computer experiment of Present College chamber is all generally multi-door course service, along with the continuous increase of demand, make in real-world operation, have increasing drawback, be embodied in:
(1) for meeting the demand of different majors, need to build more machine room, laboratory, be equipped with more experimental facilities, construction cost constantly increases;
(2) for the equipment that ensures machine room, laboratory can normally move, need to increase more attendant and carry out maintenance work, not only inefficiency, and improved the cost of daily management and maintenance;
(3) due to the different demands of different majors to computational resource, the computational resource utilances such as CPU are generally less than 15%, and computational resource cannot be fully used, and causes serious waste;
(4) because an experimental calculation machine in traditional experiment teaching pattern need to be multi-door course service, experimental teaching content is subject to the restriction of traditional experiment pattern, some have the experimental project of particular/special requirement (as multimachine, multiple operating system) to be forced to simplify or remove to experimental situation, and the degree that becomes more meticulous of teaching Process of experiment is low;
(5) because student is at the enterprising line operate of physical machine separately, cannot realize the unified management of teaching process, the interactive and supervisory capability of experimental teaching can not get effective guarantee.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, the experiment teaching system based on cloud desktop of a kind of combination cloud desktop remote access technology and virtual machine technique is provided, the construction cost and the maintenance cost that effectively reduce experimental teaching, improve computational resource utilance; The calculating of desktop PC and storage resources are concentrated and be deployed in virtualized server resource pool, reduce the configuration needs of cloud desktop experimental terminal, highly versatile, flexibility are strong; Improve the standardization of teaching Process of experiment and become more meticulous, and safe; Improve the supervisory capability of experimental teaching.
The object of the invention is to be achieved through the following technical solutions: based on the experiment teaching system of cloud desktop, it comprises cloud desktop experimental terminal, main management server, virtualized server resource pool, storage server and at least one application server, in virtualized server resource pool, be provided with multiple physical servers, multiple virtual machines are installed on each physical server, cloud desktop experimental terminal is as input-output equipment, be connected with the physical server in virtualized server resource pool by desktop network switch, realize the Long-distance Control to virtual machine; Main management server is connected with each physical server by managerial grid switch, for each physical server is carried out respectively to unified management, scheduling of resource and operation monitoring, main management server also connects desktop network switch, and the connection status of cloud desktop experimental terminal and virtual machine is monitored to processing; Storage server is connected with each physical server by storage network switch, for leaving the virtual machine file of each physical server concentratedly; Each physical server is connected with at least one application server by application network switch, realizes the access of virtual machine application server.
Experiment teaching system based on cloud desktop also comprises secure access gateway server and authentication LIST SERVER, secure access gateway server and authentication LIST SERVER are all connected to desktop network switch, secure access gateway server provides unified remote access entrance for virtual machine, and the account behavior of the cloud desktop experimental terminal to remote access virtual machine is simultaneously recorded and controlled; Authentication LIST SERVER is for storing and authenticate the account of remote access virtual machine.
Described cloud desktop experimental terminal comprises one or more combinations in multiple pc terminal, many thin client terminals and Duo Tai mobile terminal.
Described main management server comprises course experiment teaching ADMINISTRATION SUBSYSTEM and the virtual architecture subsystem of cloud computing, course experiment teaching ADMINISTRATION SUBSYSTEM is for the overall process of management training coarse experimental teaching, and the virtual architecture subsystem of cloud computing is for carrying out unified resource pool management and Dynamic resource allocation to physical server.
Described course experiment teaching ADMINISTRATION SUBSYSTEM comprises experimental teaching administration module, experiment management module, basic information management module and system management module, and experimental teaching administration module comprises that course offered, experiment course scheduling management, experimental teaching content management, laboratory student-directed, laboratory application, laboratory application approval, course are registered to be managed and resources material is uploaded the one or more function sub-modules in download; Experiment management module comprise that the management of experimental machine Template Manager, experimental machine, experiment are given lessons and student's computer practice management in one or more function sub-modules; Basic information management module comprises the one or more function sub-modules in school's essential information, teaching unit setting, department's essential information, grade's essential information, class's essential information, teacher's essential information, student's essential information and laboratory essential information; System management module comprises one or more function sub-modules that setting is started to school in date, Role Management, user management and log management.
The virtual architecture subsystem of described cloud computing comprises cloud desktop management module and resources of virtual machine pond administration module, cloud desktop management module comprises the one or more function sub-modules in virtual desktop management, desktop Template Manager, terminal management and user's desktop management, and resources of virtual machine pond administration module comprises the one or more function sub-modules in virtual pool management, Virtual Machine Manager, physical machine management, virtual machine template management, resource scheduling management, monitoring resource and mirror image management.
The invention has the beneficial effects as follows:
(1) adopt virtual machine to substitute traditional physical machine as Experimental Instruction Environment, reduced experiment machine room hardware construction cost and maintenance cost, reduced overall energy consumption, on physical server, create multiple virtual machines, improved the resource utilization of physical server;
(2) adopt cloud desktop remote access technology and virtual machine technique, reliable and stable, by the calculating of desktop PC and the concentrated virtualized server resource pool that is deployed in of storage resources, cloud desktop experimental terminal is only as input-output equipment, adopt the thin client of low cost, low-power consumption also to can be used as the use of cloud desktop experimental terminal, versatility, flexibility are strong, reduce cloud desktop experimental terminal cost;
(3) virtual machine template of the unified production standard of support, also can be the virtual machine template of the different experiments Project settings different operating system environment of laboratory, solve the drawback of conventional physical PC as the public experimental situation of multi-door curriculum experiment, be conducive to further improve the standardization of experimental teaching and become more meticulous, realize Experimental Instruction Environment continuity and selectivity;
(4) in cloud desktop experimental terminal and virtualized server resource pool, the communication transfer of physical server through safety certification, has ensured remote-operated high safety;
(5) realize unified management, scheduling of resource and the operation monitoring of each physical server by main management server, improved the supervisory capability of experimental teaching, ensured experiment teaching effect.
Brief description of the drawings
Fig. 1 is structured flowchart of the present invention;
Fig. 2 is the structured flowchart of course experiment teaching ADMINISTRATION SUBSYSTEM;
Fig. 3 is the structured flowchart of the virtual architecture subsystem of cloud computing.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
As shown in Figure 1, based on the experiment teaching system of cloud desktop, be applied to experimental teaching, reduce the configuration requirement of cloud desktop experimental terminal, reduce the construction cost in laboratory and the maintenance cost of experimental facilities, improve computational resource utilance, realize the standardization of teaching Process of experiment, become more meticulous and effectively supervision and management, this experiment teaching system comprises cloud desktop experimental terminal, main management server, virtualized server resource pool, storage server and at least one application server, in virtualized server resource pool, be provided with multiple physical servers, on each physical server according to demand and the configuration of physical server multiple virtual machines are installed, each physical server is connected with at least one application server by application network switch, realize the access of virtual machine application server.Cloud desktop experimental terminal is as input-output equipment, be connected with the physical server in virtualized server resource pool by desktop network switch, realize the Long-distance Control to virtual machine, cloud desktop experimental terminal can be multiple pc terminal, can be also many thin client terminals, or adopts multiple mobile terminals, mobile terminal comprises mobile flat board, notebook etc.,, select many thin client terminals as cloud desktop experimental terminal here, reduce hardware cost.
Main management server is connected with each physical server by managerial grid switch, for each physical server is carried out respectively to unified management, scheduling of resource and operation monitoring, main management server also connects desktop network switch, and the connection status of cloud desktop experimental terminal and virtual machine is monitored to processing.In order to ensure the handling property of main management server, main management server is by special managerial grid, i.e. gigabit Ethernet, communicates with controlled physical server.Main management server is based on SOA(Service-Oriented Architecture Based) physical server is managed, even if main management server service is interrupted, also can not affect physical server and virtual machine wherein normally moves.If system has higher requirement to reliability, for fear of Single Point of Faliure, main management server also can adopt the high availability cluster of HA to dispose.
Storage server is for leaving the virtual machine file of each physical server concentratedly, and it is connected with each physical server by storage network switch.Storage server adopts SAN storage server, can be both IP-SAN storage, can be also FC-SAN storage, and SAN storage server is by special storage network, and the above Ethernet of gigabit or optical fiber memory transactions net, communicate with physical server.Storage network is the dedicated network of physical server access SAN storage server, if adopt FC-SAN storage, storage network is optical fiber memory transactions net, and physical server adopts the above HBA card of 4Gb (optical fiber storage card); If adopt IP-SAN storage, storage network is ten thousand mbit ethernets, and physical server adopts ten thousand mbit ethernet cards.For the stability that ensures that storage server is communicated with, need carry out the suitable network optimization for different storage classes, as configuration switch is opened memory access protocols optimization, opens flow control, opened huge hardwood parameter etc.
As preferably, experiment teaching system based on cloud desktop also comprises secure access gateway server and authentication LIST SERVER, secure access gateway server and authentication LIST SERVER are all connected to desktop network switch, secure access gateway server provides unified remote access entrance for virtual machine, the account behavior of the cloud desktop experimental terminal to remote access virtual machine is simultaneously recorded and is controlled, the remote access connection status that administrative staff can be concentrated check virtual machine, can interrupt immediately it to suspicious account is connected with the remote access of virtual machine, realize the safe access of cloud desktop experimental terminal to virtual machine.Authentication LIST SERVER is for storing and authenticate the account of remote access virtual machine.
Concrete, main management server comprises course experiment teaching ADMINISTRATION SUBSYSTEM and the virtual architecture subsystem of cloud computing, course experiment teaching ADMINISTRATION SUBSYSTEM is for the overall process of management training coarse experimental teaching, and the virtual architecture subsystem of cloud computing is for carrying out unified resource pool management and Dynamic resource allocation to physical server.
As shown in Figure 2, course experiment teaching ADMINISTRATION SUBSYSTEM comprises experimental teaching administration module, experiment management module, basic information management module and system management module.Experimental teaching administration module comprises that course offered, experiment course scheduling management, experimental teaching content management, laboratory student-directed, laboratory application, laboratory application approval, course are registered to be managed and resources material is uploaded the function sub-modules such as download.Course offered function sub-modules manages the curriculum information in per term for teaching unit or teacher, comprises the information such as to place curriculum title, optional laboratory, optional teacher, experimental teaching outline.Experiment course scheduling management function sub-modules manages the laboratory information that need to offer in per term for teaching unit or teacher, and the support to laboratory class division is provided.Experimental teaching content management function submodule arranges the detailed experimental teaching content of laboratory for teacher, fills in the information such as each experimental project title, experiment content, experiment class hour, is convenient to student and consults in the time testing.Laboratory student-directed function sub-modules manages student ' s list required or elective experiment class for teacher, the virtual machine that only has student in laboratory list could distribute to test, carries out course and registers.Laboratory application function sub-modules is preengage application for teacher to the required laboratory of laboratory, also can unify scheduling by teaching unit.Application approval function sub-modules in laboratory is concentrated examination & approval for Lab Manager to the laboratory of each laboratory reservation, can return inappropriate application.The course management function submodule of registering carries out query statistic to laboratory student to class situation for teacher, and when student uses the virtual machine of experiment, system can be registered automatically.Resources material is uploaded download function submodule and is uploaded the required courseware of laboratory, code sample, tool software, guide book of experiment and other associated documents for teacher, and student can download use in virtual machine; In addition, student can upload experiment operation associated documents, is convenient to teacher and collects download.
Experiment management module comprises that the management of experimental machine Template Manager, experimental machine, experiment are given lessons and the function sub-modules such as student's computer practice management.The demand of the course experiment teaching environment that experimental machine template management function submodule proposes according to teacher for Lab Manager, makes experiment virtual machine template, and all experiment virtual machine template is managed concentratedly.Experimental machine management function submodule is used for Lab Manager according to the course experiment teaching arrangement in each laboratory, the experimental demonstration machine of selecting the corresponding experiment virtual machine template experiment virtual machine that establishment student uses automatically in batches and teacher to use before laboratory starts; After each laboratory finishes, Lab Manager can unify to close the experiment virtual machine that laboratory is relevant, the computational resource that release experiment virtual machine is shared, and prepare required experiment virtual machine environment for subsequent experimental class; After finishing in term, Lab Manager can unify to destroy the relevant experiment virtual machine of all laboratories of this term, the storage resources that recovery experiment virtual machine is shared.Test the function sub-modules of giving lessons and carry out course experiment teaching for teacher, instruction of papil completes experiment content, and teacher can operate demonstration in experimental demonstration machine, and student can watch operating process.Student's computer practice management function sub-modules is logined experiment virtual machine environment for student and is carried out experiment content operation, student can check the content of courses requirement of each experiment, can watch teacher's operation demonstration, can in experiment virtual machine, download the data that experiment is relevant, and upload experiment operation.
Basic information management module comprises the function sub-modules such as school's essential information, teaching unit setting, department's essential information, grade's essential information, class's essential information, teacher's essential information, student's essential information and laboratory essential information.School's essential information function sub-modules is used for checking school's code and name information.Teaching unit arranges function sub-modules for each educational institution's information of school is set.Department's essential information function sub-modules is used for arranging each teaching unit Lower Establishment information.Grade's essential information function sub-modules is for arranging grade's information that each department is relevant.Class's essential information function sub-modules is for arranging each grade relevant class's information.Teacher's essential information function sub-modules is for arranging teacher's information that each department is relevant.Student's essential information function sub-modules is for arranging the student information that each class is relevant.Laboratory essential information function sub-modules is for arranging the laboratory information that each teaching unit is relevant.
System management module comprises the function sub-modules such as date, Role Management, user management and log management that arranges that the new term begins.Arrange the new term begins date function sub-modules for after per term finishes set under halves the new term begins the date, be convenient to automatically generate school calendar.Role Management function sub-modules is used for arranging system actor information, and default role comprises system manager, the keeper of institute, Lab Manager, teacher, student etc.Subscriber management function submodule is used for arranging system user information, and there is a user account number in each Faculty and Students, can use teacher's job number and student's identity card number as user account number.Log management function submodule is used for all kinds of log informations of the system of checking.
As shown in Figure 3, the virtual architecture subsystem of cloud computing comprises cloud desktop management module and resources of virtual machine pond administration module.Cloud desktop management module comprises the function sub-modules such as virtual desktop management, desktop Template Manager, terminal management, user's desktop management, Identity Management, authentication management, empowerment management and log audit management, virtual desktop management function submodule has been used for the lifecycle management of virtual desktop from creating, distribute, manage, use and destroying, and the bookkeeping such as desktop mandate to user.Virtual desktop management function submodule mainly comprises feature operation as shown in table 1:
Table 1
| Sequence number | Function items | Remarks |
| 1 | Inquiry | Search virtual desktop according to querying condition |
| 2 | Editor | The parameter configuration of amendment virtual desktop |
| 3 | Delete | Physics is deleted a virtual desktop |
| 4 | User assignment | Virtual desktop is distributed to user |
| 5 | Deallocate | Reclaim the user right that virtual desktop distributes |
| 6 | Start | Start one or more virtual desktops |
| 7 | Stop | Stop one or more virtual desktops |
| 8 | Suspend | Suspend one or more virtual desktops |
| 9 | Resume operation | Recover one or more virtual desktops |
| 10 | Restart | Restart one or more virtual desktops |
| 11 | Freeze | Freeze one or more virtual desktops |
| 12 | Activate | Activate one or more virtual desktops |
| 13 | Connect | Virtual desktop of long-range connection |
| 14 | Disconnect | Disconnect the connection of one or more virtual desktops |
| 15 | Synchronously | Synchronize one or more virtual desktops with basic platform |
| 16 | Extract | From basic platform, extract virtual desktop |
| 17 | Create snapshot | For one or more virtual desktops create snapshot |
| 18 | Snapshot restore | For one or more virtual desktops recover snapshot |
| 19 | Snapshot is deleted | Delete the snapshot of one or more virtual desktops |
| 20 | BIOS arranges | A virtual desktop BIOS parameter is set |
Desktop template management function submodule, for virtual desktop template object is managed, comprises the virtual desktop template in inquiry virtualized server resource pool; A selected virtual desktop template data, carries out data with basic platform and synchronizes; A selected virtual desktop template data, revises its parameter information; A selected virtual desktop template, by its deletion; Extract virtual desktop template etc.Terminal management function sub-modules is for managing the account of cloud desktop experimental terminal.User's desktop management function sub-modules, for user's desktop is managed, comprises inquiry, compiles user desktop link information, newly-increased user's desktop connection management, deletes user's desktop connection management, is user assignment user desktop, distribution, the long-range connection user desktop of removing user's desktop, disconnects long-range connection user desktop etc.Identity Management, authentication management, empowerment management function sub-modules are used for account information, authorization message to manage, and user's register is carried out to authentication management.Log audit management function submodule is for auditing and check the information recording every day.
Resources of virtual machine pond administration module comprises the function sub-modules such as virtual pool management, Virtual Machine Manager, physical machine management, virtual machine template management, resource scheduling management, monitoring resource, system management and mirror image management.The resource file that virtual machine template is made up of hardware profile, virtual disk and client operating system configuration file, template provides the configuration of standardization hardware and software, can be used for creating the new virtual machine of multiple these configurations of use, can manage maintenance to all virtual machine template objects of system by virtual machine template management function submodule, comprise the list of browsing virtual machine template object, check template details, clone virtual machine, quick copy virtual machine, template importing, ATL initialization, template inspection etc.The base attribute of template object be can check by virtual machine template list object, CPU check figure that the corresponding virtual machine title of template, OS Type, operating system version, template use, memory size that template is used, template hard drive space size, the contained hard disk quantity of template, the contained CD-ROM drive quantity of template, the contained network interface card quantity of template etc. comprised.Clone when virtual machine, user can be in the virtual machine template of opening the manual content such as input processor number, memory size, hard-disk capacity, manually choose resource pool and the physical server at place, add network interface card etc., the clone who completes virtual machine creates.Quick copy virtual machine is similar with clone's virtual machine, and the quick copy that can realize on its basis most amount virtual machines creates.
Mirror image management function submodule is used for realizing software image management, Software Mirroring refers to follows ISO9660 international standard form, the Disc image ISO file of making from CD-ROM/DVD-ROM or the ISO file that the documenting hard disk is become, mirror image ISO file can be by the direct carry of the virtual drive of virtual machine, be used for guiding virtual machine activation installing operating system or at VME operating system, relative application software be installed, can manage maintenance to all software image file objects of system by mirror image management function submodule, comprise and browse image listing, upload image file, newly-built mirror image object, amendment mirror image object and deletion Software Mirroring object etc.
System management function submodule is for managing system parameters, system journal and system user.Resource scheduling management function sub-modules is for virtual machine or physical server are carried out to task and task groups management, and tasks carrying monitoring, realizes task configuration, and task and task groups management refer to that the task that realizes is safeguarded and the online editing of task; Tasks carrying monitoring, refers in the time of tasks carrying, can the whole execution cycle implementation status of monitor task, can monitor task at management node and resource pool server node implementation status, the context parameters term of execution of also can checking; Task configuration, refers to and realizes the task call under special applications scene demand.
Physical machine management function submodule is for managing physical server object, comprise and 1. browse physical server list, as physical server title, physical server state, CPU check figure, free memory capacity, local available disk capacity, authentication state etc.; 2. check physical server details, can check the detailed configuration information of physical server, be resource pool information under the virtual machine list information that moves on CPU, internal memory, disk, network interface card, physical server, physical server etc., and can start, stop physical server, monitor physical server real-time running state, check the attribute information etc. of physical server; Monitor that physical server real-time running state specifically comprises cpu load rate, memory usage, exchange area memory usage, operating system progress information, local disk capacity utilization, network I/O and magnetic disc i/o information etc.; 3. service mode management, refers at physical server in the time regularly shutting down the maintenance works such as maintenance or dilatation, needs first physical server setting to be entered service mode; 4. authentication management refers to the normal physical server of identity is authenticated, to the abnormal physical server of identity, and refusal certification; 5. deletion of physically server refers to existing physical server to delete processing, if operation has virtual machine on physical server, can point out error message.
Management function of virtual machine submodule, for virtual machine object is managed, comprises virtual machine object inquiry, i.e. browsing virtual machine list, inquires about qualified virtual machine object; Virtual machine basic controlling, to virtual machine start, stop, suspending, activate, the basic operation such as synchronous, deletion, Long-distance Control; Virtual machine is installed online, by operating system image starting and virtual machine is installed; Virtual machine backup, creates virtual machine Backup Data, recovers virtual machine state from the Backup Data of specifying, and historical Backup Data is managed.Virtual machine is carried out to data derivation or importing; Virtual machine snapshot, creates virtual machine snapshot data, recovers virtual machine state from the snapshot data of specifying, and historical snapshot data is managed; Virtual machine (vm) migration, carries out across physical server or across the migration of storage on-line/off-line virtual machine; Virtual machine copies, and virtual machine is cloned and is copied or quick copy; Virtual machine peripheral hardware, carries out carry or unloading to virtual machine USB device, virtual drive etc.; Virtual machine configuration, arranges virtual machine BIOS, and vCPU to virtual machine, internal memory, hard disk, network interface card etc. carry out expansion management; Virtual machine is shared dish, the shared dish of virtual machine is arranged, and builds high availability cluster for many virtual machines.
Virtual pool management function submodule is for managing resource pool object, comprise and browse resource pool list, newly-built resource pool object, delete resource pool object, monitor resource pool object, resource allocation pond object, check that resource pool object properties etc., resource pool object properties comprise resource pool title, resource pool type, resource pool description, resource pool path etc.Under resource pool running status, can monitor the following state information of resource pool: the 1. base attribute such as resource pool title, type, description, path; 2. physical server/virtual machine quantity real-time statistics chart of resource pool; 3. resource pool computational resource (CPU core, vCPU, internal memory, storage) real time capacity chart; 4. resource pool is received the physical server list object of pipe; 5. the virtual machine object list that resource pool moves etc.Monitoring resource function sub-modules is for monitoring physical resources such as physical server, virtual machine, storage, networks, to reach optimized adjusting and use.
Claims (6)
1. the experiment teaching system based on cloud desktop, be applied to experimental teaching, reduce the configuration requirement of cloud desktop experimental terminal, reduce the construction cost in laboratory and the maintenance cost of experimental facilities, improve computational resource utilance, realize the standardization of teaching Process of experiment, become more meticulous and effectively supervision and management, it is characterized in that: it comprises cloud desktop experimental terminal, main management server, virtualized server resource pool, storage server and at least one application server, in virtualized server resource pool, be provided with multiple physical servers, multiple virtual machines are installed on each physical server, cloud desktop experimental terminal is as input-output equipment, be connected with the physical server in virtualized server resource pool by desktop network switch, realize the Long-distance Control to virtual machine, main management server is connected with each physical server by managerial grid switch, for each physical server is carried out respectively to unified management, scheduling of resource and operation monitoring, main management server also connects desktop network switch, and the connection status of cloud desktop experimental terminal and virtual machine is monitored to processing, storage server is connected with each physical server by storage network switch, for leaving the virtual machine file of each physical server concentratedly, each physical server is connected with at least one application server by application network switch, realizes the access of virtual machine application server.
2. the experiment teaching system based on cloud desktop according to claim 1, it is characterized in that: it also comprises secure access gateway server and authentication LIST SERVER, secure access gateway server and authentication LIST SERVER are all connected to desktop network switch, secure access gateway server provides unified remote access entrance for virtual machine, and the account behavior of the cloud desktop experimental terminal to remote access virtual machine is simultaneously recorded and controlled; Authentication LIST SERVER is for storing and authenticate the account of remote access virtual machine.
3. the experiment teaching system based on cloud desktop according to claim 1, is characterized in that: described cloud desktop experimental terminal comprises one or more combinations in multiple pc terminal, many thin client terminals and Duo Tai mobile terminal.
4. the experiment teaching system based on cloud desktop according to claim 1, it is characterized in that: described main management server comprises course experiment teaching ADMINISTRATION SUBSYSTEM and the virtual architecture subsystem of cloud computing, course experiment teaching ADMINISTRATION SUBSYSTEM is for the overall process of management training coarse experimental teaching, and the virtual architecture subsystem of cloud computing is for carrying out unified resource pool management and Dynamic resource allocation to physical server.
5. the experiment teaching system based on cloud desktop according to claim 4, it is characterized in that: described course experiment teaching ADMINISTRATION SUBSYSTEM comprises experimental teaching administration module, experiment management module, basic information management module and system management module, experimental teaching administration module comprises that course offered, experiment course scheduling management, experimental teaching content management, laboratory student-directed, laboratory application, laboratory application approval, course are registered to be managed and resources material is uploaded the one or more function sub-modules in download; Experiment management module comprise that the management of experimental machine Template Manager, experimental machine, experiment are given lessons and student's computer practice management in one or more function sub-modules; Basic information management module comprises the one or more function sub-modules in school's essential information, teaching unit setting, department's essential information, grade's essential information, class's essential information, teacher's essential information, student's essential information and laboratory essential information; System management module comprises one or more function sub-modules that setting is started to school in date, Role Management, user management and log management.
6. the experiment teaching system based on cloud desktop according to claim 4, it is characterized in that: the virtual architecture subsystem of described cloud computing comprises cloud desktop management module and resources of virtual machine pond administration module, cloud desktop management module comprises virtual desktop management, desktop Template Manager, one or more function sub-modules in terminal management and user's desktop management, resources of virtual machine pond administration module comprises virtual pool management, Virtual Machine Manager, physical machine management, virtual machine template management, resource scheduling management, one or more function sub-modules in monitoring resource and mirror image management.
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