JP2008269249A - Power controller, virtual server management system, power supply control method, and power supply control program - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the power consumption of a physical server in operation while flexibly coping with load state imposed on a physical server. <P>SOLUTION: A physical server selection device 6 collects the load states of systems operating on virtual servers 2a, to 2m, 3a, to 3m, 4a, to 4m, and 5a, to 5m from a plurality of physical servers 1a, to 1n, and selects physical servers 1a, to 1n operating the systems on the basis of the load states of the systems operating on the virtual servers 2a, to 2m, 3a, to 3m, 4a, to 4m and 5a, to 5m, and a power supply controller 7 turns on the power sources of the physical servers 1a, to 1n which have been selected by a physical server selection device 6, and turns off the power sources of the physical servers 1a, to 1n which have not been selected by the physical server selection device 6. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a power supply control device, a virtual server management system, a power supply control method, and a power supply control program, and in particular, is suitably applied to a method of performing power control of a physical server while consolidating virtual servers based on the operating status of the physical server. Is something.

  In order to execute a task that required multiple physical servers on one physical server, multiple virtual servers are operated on one physical server, and applications can be executed on each virtual server. Server virtualization technologies that enable use are becoming widespread. Also, with this server virtualization technology, since multiple virtual servers can be operated on one physical server, one or more physical servers can be flexibly adapted to changes in resource requirements. Efficient resources can be allocated on the virtual server.

  Also, for example, in Patent Document 1, in a CoD system that increases or decreases the number of servers according to the amount of requests from clients, a relay control device is provided between the clients and the CoD system to temporarily store received processing requests. At the same time, by controlling so that requests exceeding the current processing capacity do not flow into the CoD system, the system is overloaded due to sudden increase in the request amount, and consequently the response time is deteriorated, the request is discarded, the system is unstable. A method for avoiding the conversion is disclosed.

Further, for example, in Patent Document 2, when the amount of traffic indicated by the request amount prediction value arrives at the network service, the average response time for the user terminal is equal to or less than a response threshold predetermined by the operation manager. Thus, by controlling the amount of servers allocated to the network service, there is a method for automatically distributing the servers in the data center to each network service in real time to the load balancer without human intervention. It is disclosed.
JP-A-2005-250548 WO2004 / 092971

However, the conventional server virtualization technology cannot control the number of physical servers to be activated in accordance with the load status on the physical server, so the server operator can flexibly cope with the load status on the physical server. There was a problem that it was not possible to reduce labor and power consumption of the physical server in operation.
Therefore, an object of the present invention is to provide a power control device, a virtual server management system, a power control method, and power control that can reduce the power consumption of an operating physical server while flexibly responding to a load situation on the physical server. Is to provide a program.

  In order to solve the above-described problem, according to the power supply control device according to claim 1, load allocation is performed in which loads applied to a plurality of physical servers are allocated to a plurality of virtual servers operated on at least one physical server. And power control means for turning off the power of the physical server to which the load is not allocated by the load allocation means while turning on the power of the physical server to which the load is allocated by the load allocation means. Features.

  Further, according to the power supply control device of claim 2, the load status collection means for collecting the load status of the system operated on the virtual server from a plurality of physical servers, and the load status of the system operated on the virtual server Based on the load allocation means for allocating the load applied to the physical server, and the physical server to which the load is allocated by the load allocation means, and the physical load that is not allocated by the load allocation means Load distribution means for turning off the power of the server.

According to a third aspect of the present invention, the load allocating unit allocates the load so that the load applied to the physical server falls within a predetermined range of the processing capacity of the physical server. To do.
Further, according to the power supply control device according to claim 4, when the load allocating unit has a second physical server that has a margin for allocating loads of all systems operated on the first physical server, All systems operating on the first physical server are moved to the second physical server, and the load distribution means turns off the power supply of the first physical server.

According to the power control apparatus of claim 5, when the load applied to the currently operating physical server exceeds the upper limit value, the load distribution unit turns on the power of the currently operating physical server. The load allocating means reallocates the load applied to the physical server so that the load applied to the physical server does not exceed an upper limit value.
Further, according to the power supply control device according to claim 6, the load allocating means uses a reference unit obtained by dividing the processing capacity of the processor as one gene, and a load capacity of a system operated on the virtual server is equal to the gene. Generates a solid represented by an array, and assigns the solid gene obtained by repeating the selection and crossover according to the genetic algorithm to the physical server in order within the range of the load capacity set for the physical server to be allocated. It is characterized by that.

  According to the virtual server management system of claim 7, based on a plurality of physical servers, a plurality of virtual servers respectively started on the physical server, and a load status of a system operated on the virtual servers The load distribution means for allocating the load applied to the physical server and the physical server to which the load is allocated by the load allocation apparatus while the physical server to which the load is allocated by the load allocation apparatus are operated. And a power supply control device.

According to the power control method of claim 8, the step of allocating the load applied to the plurality of physical servers to the plurality of virtual servers operating on at least one physical server, and the load being allocated And turning off the power of the physical server to which the load cannot be assigned while turning on the power of the physical server.
According to the power control program of claim 9, the load status of the system operated on the virtual server is collected from a plurality of physical servers, and the load status of the system operated on the virtual server is based on the step. A step of allocating a load applied to the physical server and a step of turning off a physical server to which the system load cannot be allocated while turning on a physical server to which the system load is allocated. It is made to perform.

  As described above, according to the present invention, it is possible to perform power on / off control of physical servers while controlling the number of physical servers to be activated in accordance with the load status on the physical servers. It is possible to reduce the labor of the server operator and the power consumption of the physical server in operation while flexibly responding to the load situation on the server.

Hereinafter, a power supply control device according to an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing a schematic configuration of a virtual server management system to which the power supply control device according to the first embodiment of the present invention is applied.
In FIG. 1, the virtual server management system is provided with n (n is an integer of 2 or more) physical servers 1a, 1b,. The physical server 1a is configured such that m (m is an integer of 2 or more) virtual servers 2a, 2b,..., 2m can be started, and the physical server 1b is configured with m virtual servers 3a and 3b. ,..., 3m can be started, the physical server 1c is configured to start m virtual servers 4a, 4b,..., 4m, and the physical server 1n is m virtual servers. 5a, 5b,..., 5m can be activated.

  A physical server means one configured to operate as one server by hardware, and a virtual server is configured on a physical server to operate as one server by shiftware. It means what was done. An operating system such as Windows (registered trademark) can be individually started up on the virtual server. For this reason, by mounting a plurality of virtual servers on a physical server, a plurality of operating systems can be individually started up on one physical server.

And when it comprises so that a several virtual server can be started on one physical server, it can implement | achieve, for example by installing server virtualization software on a physical server.
Further, the virtual server management system is provided with a power supply control device 9 that controls the power supplies of the physical servers 1a, 1b,. Then, the power supply control device 9 applies a load applied to the plurality of physical servers 1a, 1b,..., 1n to a plurality of virtual servers 2a operated by any one of the physical servers 1a, 1b. 2b, ..., 2m, 3a, 3b, ..., 3m, 4a, 4b, ..., 4m, 5a, 5b, ..., 5m, physical servers whose load could not be assigned The power supplies 1a, 1b..., 1n can be turned off.

  That is, the power supply control device 9 includes virtual servers 2a, 2b, ..., 2m, 3a, 3b, ..., 3m, 4a, 4b, ..., 4m, 5a, 5b, ..., 5m. .., 1n that collects the load status of the system operating on the plurality of physical servers 1a, 1b,..., 1n, virtual servers 2a, 2b,. 3m, 4a, 4b,..., 4m, 5a, 5b,..., Load allocated to the physical servers 1a, 1b,. The physical servers 1a, 1b,..., 1n to which loads are assigned by the assigning means 7 and the load assigning means 7 are turned on, and the physical servers 1a, 1b,. ..Power to turn off 1n power Control means 8 is provided.

The virtual server referred to here may be an application that runs on a web server or a business-oriented system.
And the load condition collection means 6 is virtual server 2a, 2b, ..., 2m, 3a, 3b, ..., 3m, 4a, 4b, ..., 4m, 5a, 5b, ..., 5m. The load status of the system operated above is collected from a plurality of physical servers 1a, 1b,..., 1n, and the load status of the system is notified to the load allocation means 7. And the load allocation means 7 are virtual servers 2a, 2b, ..., 2m, 3a, 3b, ..., 3m, 4a, 4b, ..., 4m, 5a, 5b, ..., 5m. Based on the load status of the system to be operated, the load applied to the physical servers 1a, 1b,..., 1n is allocated, and the allocation result is notified to the power control means 8. Then, when the power control means 8 receives the load assignment results for the physical servers 1a, 1b,..., 1n from the load assignment means 7, the physical servers 1a, 1b,. .., 1n can be turned off, and the physical servers 1a, 1b,.

Here, as a method of allocating the load applied to the physical servers 1a, 1b,..., 1n, for example, the load applied to the physical servers 1a, 1b,. Loads can be assigned so that they are each within a predetermined range of capabilities. And the power supply control means 8 can turn off the power supply of the extra physical servers 1a, 1b,.
Or, for example, when the load of all systems operating on n physical servers 1a, 1b,..., 1n can be supported by one physical server 1a, n physical servers 1a, 1b. ... All systems operating on 1n can be moved to one physical server 1a. And the power supply control means 8 can turn off the power of the other physical servers 1b..., 1n while keeping the power of the physical server 1a on.

Alternatively, for example, when the physical servers 1a and 1b are operating and the load applied to the physical servers 1a and 1b exceeds the upper limit value, the power control unit 8 supplies power to the physical server 1c that is not currently operating. Can be turned on. Then, the load allocation unit 7 can reallocate the load applied to the physical servers 1a, 1b, and 1c so that the load applied to the physical servers 1a, 1b, and 1c does not exceed the upper limit value.
As a result, while controlling the number of physical servers 1a, 1b,..., 1n to be activated in accordance with the load situation applied to the physical servers 1a, 1b. 1n power on / off control can be performed, and the physical servers 1a, 1b,.. Electric power can be reduced.

FIG. 2 is a diagram showing an example of a method for allocating a system operating on a virtual server according to an embodiment of the present invention onto a physical server.
In FIG. 2, for example, the A system of company A is operated on the physical server 1a of FIG. 1, the b system of company B is operated on the physical server 1b of FIG. 1, and the c system of company C is the physical system of FIG. It is assumed that it is operating on the server 1c.
1 collects the load capacity on the physical servers 1a, 1b, and 1c of the A system of the A company, the b system of the B company, and the c system of the C company in units of time or day. can do. The load capacity of company A's system a on the physical server 1a is high in the first half of the month, and the load capacity of company B's system b on the physical server 1b is high in the middle of the month. Assuming that the load capacity of the c system is high in the second half of the month, the load status collecting means 6 loads the load capacity of the A system of the A company, the b system of the B company, and the c system of the C company into one physical server 1a. Allocation, load capacity of company A's a system, company B's b system and company C's c system can be borne by one physical server 1a.

When the load capacities of company A's a system, company B's b system, and company C's c system are allocated to physical server 1a, physical server 1a starts virtual servers 2a, 2b, and 2c, and company A's a The system can be operated on the virtual server 2a, the B system of company B can be operated on the virtual server 2b, and the c system of company C can be operated on the virtual server 2c.
Further, when the load capacities of the a system of company A, the b system of company B, and the c system of company C are assigned to the physical server 1a, the power supply control device 7 keeps the power of the physical server 1a turned on. By turning off the power supplies 1b and 1c, the power consumption of the physical servers 1b and 1c can be saved.

FIG. 3 is a block diagram showing a schematic configuration of a virtual server management system to which the power supply control apparatus according to the second embodiment of the present invention is applied.
3, the virtual server management system is provided with n physical servers 11a, 11b,. The physical server 11a is configured to start m virtual servers 12a, 12b,..., 12m, and the physical server 11b starts m virtual servers 13a, 13b,. The physical server 11c is configured to start m virtual servers 14a, 14b,..., 14m, and the physical server 11n is configured to m virtual servers 15a, 15b,. 15m can be activated.

  The physical server 11a includes a virtual machine management manager 16, an operation status collection unit 17, an operation result transmission unit 18, an operation result data 19, an operation result collection unit 20, a virtual machine control unit 21, and a physical machine power control instruction unit 22. Is provided. Although not shown in FIG. 3, the virtual machine management manager 16, the operation status collection unit 17, the operation result transmission unit 18, and the operation are performed on the other physical servers 11 b... 11 n as well as the physical server 11 a. Result data 19, operation result collection means 20, virtual machine control means 21, and physical machine power control instruction means 22 can be provided.

  Here, the virtual machine management manager 16 manages the load capacity of the virtual servers 12a, 12b,..., 12m, and instructs the physical server 11a to start and stop the virtual servers 12a, 12b,. You can do it. The operation status collection means 17 can collect the operation status of the physical server 11a and the virtual servers 12a, 12b,..., 12m, and send a request for transmission of the operation status to the load balancer 31. The operation result transmission means 18 can periodically make a request to transmit the operation results of the physical server 11a and the virtual servers 12a, 12b,.

  The operation result collection means 20 can collect the operation results of the physical server 11a and the virtual servers 12a, 12b,..., 12m and generate the operation result data 19. The virtual machine control means 21 controls the start and stop of the virtual servers 12a, 12b,..., 12m based on the load assigned to the physical server 11a and the virtual servers 12a, 12b,. The manager 16 can be instructed. The physical machine power control instruction means 22 can perform power on / off control of the physical server 11a based on the load assigned to the physical server 11a. The transmission / reception control unit 23 can control transmission / reception of data between the physical server 11 a and the load distribution device 31.

Further, the operation result data 19 indicates the operation results in the system unit of the physical server 11a and the virtual servers 12a, 12b,..., 12m. be able to.
-Virtual server name key-CPU load for each system when the physical server 11a and the virtual servers 12a, 12b, ..., 12m are operated-The physical server 11a and the virtual servers 12a, 12b, ..., 12m Memory usage per system when it is running

Note that the virtual machine management manager 16, the operation status collection unit 17, the operation result transmission unit 18, the operation result collection unit 20, the virtual machine control unit 21, and the physical machine power supply control instruction unit 22 perform processing performed by these units. This can be realized by causing a computer to execute a program in which instructions to be executed are described. The operation result data 19 can be stored in a memory in the physical server 11a.
Then, if this program is stored in a storage medium such as a CD-ROM, the virtual machine management manager 16 can collect the operation status by installing the storage medium in the computer of the physical server 11a and installing the program in the computer. The processing performed by the means 17, the operation result transmission means 18, the operation result collection means 20, the virtual machine control means 21, and the physical machine power control instruction means 22 can be realized.

  In addition, the virtual server management system is provided with a load balancer 31. The load balancer 31 includes virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ... .., 14m, 15b,..., 15m are allocated to the physical servers 11a, 11b,. , 11n can be instructed to power off the physical servers 11a, 11b,..., 11n based on the load assigned to 11n.

  The load distribution device 31 includes a transmission / reception control unit 32, a load distribution device 31, an operation status reception unit 33, an operation result reception unit 34, a virtual machine state table 35, operation result data 36, a virtual machine abnormality monitoring unit 37, a physical Machine management table 38, allocation system management table 39, virtual machine allocation scheduler 40, hourly operation result data 41, virtual machine switching schedule data 42, virtual machine control instruction means 43, physical machine power supply control instruction means 44, load distribution means 45 Is provided.

Here, the transmission / reception control unit 32 can control transmission / reception of data between the physical server 11 a and the load distribution apparatus 31. The operating state receiving means 33 includes physical servers 11a, 11b,..., 11n, and virtual servers 12a, 12b,..., 12m, 13a, 13b, ..., 13m, 14a, 14b,. The operating states of 15a, 15b,..., 15m can be received and registered in the virtual machine state table 35.
The operation result receiving means 34 includes the physical servers 11a, 11b,..., 11n and the virtual servers 12a, 12b,..., 12m, 13a, 13b, ..., 13m, 14a, 14b,. 15a, 15b,..., 15m operation results can be received and registered as operation result data 36.

  The virtual machine abnormality monitoring means 37 refers to the virtual machine state table 35 periodically, while referring to the virtual servers 12a, 12b,..., 12m, 13a, 13b, ..., 13m, 14a, 14b,. , 14m, 15a, 15b,..., 15m, abnormalities in operating conditions, protrusion of load capacity, etc. are detected, and the virtual servers 12a, 12b,..., 12m, 13a, 13b,. , 14a, 14b,..., 14m, 15a, 15b,..., 15m can be reset.

  The virtual machine allocation scheduler 40 operates the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. .., 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,. A schedule can be set.

  The virtual machine control instruction means 43 periodically monitors the virtual machine switching schedule data 42, and physical servers 11a, 11b,..., 11n and virtual servers 12a, 12b,..., 12m, 13a, 13b,. ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., based on the load allocated to 15m, those physical servers 11a, 11b ..., 11n and virtual servers 12a, 12b , ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m so that the physical servers 11a, 11b,.・ You can instruct 11n.

The physical machine power supply control instruction unit 44 periodically monitors the virtual machine switching schedule data 42, and when the physical servers 11a, 11b,..., 11n are designated to start or stop, the physical servers 11a, 11b,. .., 11n can be instructed to perform the power on / off control of 11n, respectively.
Based on the virtual machine switching schedule data 42, the load distribution means 45 is based on the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, The load can be distributed to 15b, ..., 15m.

The virtual machine state table 35 includes virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. The management information of each of the above systems is shown, and examples of management items in the virtual machine state table 35 include the following.
-Virtual server name key-Operating status of each system-Status code of each system-Status message contents of each system-Details of status messages of each system

The operation result data 36 includes physical servers 11a, 11b ..., 11n and virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a. , 15b,..., 15m indicates the operation results in units of systems, and examples of management items in the operation result data 36 include the following.
Virtual server name key Physical servers 11a, 11b ..., 11n and virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a , 15b,..., 15m when the CPU load per system unit / memory usage rate per system unit

The physical machine management table 38 shows the management information of the physical servers 11a, 11b,..., 11n on which the system is actually operated, and examples of management items in the physical machine management table 38 include the following. it can.
-Physical server name key-Physical server operation status-Physical server allocation priority order-Physical server status code-Physical server status message content-Details of physical server status message-CPU capacity of physical server (machine specification-current Capacity state)
・ Memory capacity of physical server (machine spec / current capacity status)

The allocation system management table 39 is on the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. The management information of the system to be operated is shown. Examples of management items in the allocation system management table 39 include the following examples.
-Application system unit key-Company code and company name-System name-Schedule pattern (previous week, previous month, previous year, etc.)
・ Maximum CPU load of each system ・ Maximum memory capacity of each system ・ CPU threshold value for each system ・ Memory threshold value for each system ・ Maximum transaction time of each system (stop waiting time)
-Whether each system can be forcibly disconnected-Whether there is a notification when each system is stopped-Message contents when each system is stopped-Physical server that cannot be started

.., 11n and virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b,. , 15a, 15b,..., 15m indicates the operation results for each hour, and examples of management items in the hourly operation results data 41 include the following examples.
-Application system unit key-Company code and company name-System name-Date and time of system operation-Physical servers 11a, 11b ..., 11n and virtual servers 12a, 12b, ..., 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,..., 15m when the maximum CPU load in the system unit, the maximum memory usage rate in the system unit, Average CPU load per system / Average memory usage per system

The virtual machine switching schedule data 42 includes which virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. The above shows the operation plan data about when to execute which system while allocating how much load capacity, and examples of management items in the virtual machine switching schedule data 42 include the following.
-Virtual server key-Virtual server start / stop date-CPU capacity at virtual server startup-Memory capacity at virtual server startup

  The transmission / reception control means 23, the transmission / reception control means 32, the load balancer 31, the operation status reception means 33, the operation result reception means 34, the virtual machine abnormality monitoring means 37, the virtual machine allocation scheduler 40, the virtual machine control instruction means 43, physical The machine power supply control instruction unit 44 and the load distribution unit 45 can be realized by causing a computer to execute a program in which an instruction for performing processing performed by these units is described. Further, the virtual machine state table 35, operation result data 36, physical machine management table 38, allocation system management table 39, hourly operation result data 41, and virtual machine switching schedule data 42 are stored in a memory in the load balancer 31. be able to.

  If this program is stored in a storage medium such as a CD-ROM, the transmission / reception control means 23, the transmission / reception control means are installed by installing the storage medium in the computer of the load distribution apparatus 31 and installing the program in the computer. 32, load distribution device 31, operation status reception means 33, operation result reception means 34, virtual machine abnormality monitoring means 37, virtual machine allocation scheduler 40, virtual machine control instruction means 43, physical machine power supply control instruction means 44, load distribution means The processing performed at 45 can be realized.

  In the physical server 11a, the operation status collection unit 17 collects the operation status of the physical server 11a and the virtual servers 12a, 12b,..., 12m, and distributes the operation status via the transmission / reception control unit 23. Transmit to device 31. Further, the operation result collecting means 20 collects the operation results of the physical server 11a and the virtual servers 12a, 12b,..., 12m, and holds the operation results as the operation result data 19 in the physical server 11a. When the operation result data 19 is stored in the physical server 11 a, the operation result transmission unit 18 transmits the operation result data 19 to the load distribution device 31 via the transmission / reception control unit 23.

The other physical servers 11b... 11n can operate in the same manner as the physical server 11a.
Then, when the operating statuses of the physical servers 11a, 11b,..., 11n are transmitted to the load balancer 31, the operating status receiving means 33 operates the physical servers 11a, 11b,. The situation is received via the transmission / reception control means 33 and registered in the virtual machine state table 35.
When the operation results of the physical servers 11a, 11b,..., 11n are respectively transmitted to the load balancer 31, the operation result receiving unit 34 operates the physical servers 11a, 11b,. The result is received via the transmission / reception control means 33 and is held as operation result data 36.

  Then, the virtual machine abnormality monitoring means 37 periodically refers to the virtual machine state table 35 and the operation result data 36, and the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b,..., 14m, 15a, 15b,. And the virtual machine abnormality monitoring means 37 is the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ...,. The operation schedule is reset according to the abnormality of the 15 m operation status or the protrusion of the load capacity, and the virtual machine switching schedule data 42 is held.

  Further, the virtual machine allocation scheduler 40 refers to the physical machine management table 38 and the allocation system management table 39, and based on the operation result data 36, the virtual servers 12a, 12b,..., 12m, 13a, 13b,. .., 13m, 14a, 14b,..., 14m, 15a, 15b,.

  The virtual machine control instruction means 43 periodically monitors the virtual machine switching schedule data 42, and physical servers 11a, 11b,..., 11n and virtual servers 12a, 12b,..., 12m, 13a, 13b, .., 13m, 14a, 14b,..., 14m, 15a, 15b,..., 15m, and the physical servers 11a, 11b,. , 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,. Through the physical servers 11a, 11b,.

  For example, when an instruction from the virtual machine control instruction unit 43 is given to the physical server 11a, the virtual machine control unit 21 receives an instruction from the virtual machine control instruction unit 43 via the transmission / reception control unit 23, and the physical server The virtual machine management manager 16 is instructed to start and stop the virtual servers 12a, 12b,..., 12m based on the loads assigned to the virtual servers 11a and 12a, 12b,.

  Further, the physical machine power supply control instruction unit 44 periodically monitors the virtual machine switching schedule data 42, and when the physical servers 11a, 11b,. .., 11n are instructed to the physical servers 11a, 11b,..., 11n via the transmission / reception control means 33 so that the power on / off control of 11b.

Then, for example, when an instruction is issued by the physical machine power control instruction unit 44 to the physical server 11a, the physical machine power control instruction unit 22 turns on the power of the physical server 11a based on the load assigned to the physical server 11a. / Off control.
Further, the load distribution means 45 is based on the virtual machine switching schedule data 42, and the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, The load is distributed to 15a, 15b, ..., 15m.
For example, when the load is distributed to the physical server 11a by the load distribution means 45, the virtual machine management manager 16 manages the load capacity of the virtual servers 12a, 12b,. , 12b,..., 12m are instructed to the physical server 11a.

  Here, the load allocation schedule for the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. As a setting method, for example, virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m In accordance with a genetic algorithm in which the load capacity of the system to be operated is expressed by a gene sequence, virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m , 15a, 15b,..., 15m can be assigned loads.

FIG. 4 is a flowchart illustrating a method for allocating a system operated on a virtual server using a genetic algorithm according to an embodiment of the present invention onto a physical server.
In FIG. 4, when assigning a load by a genetic algorithm, after generating an initial solid (step S1), the system is arranged on the physical servers 11a, 11b,..., 11n (step S2).

Then, while evaluating the solid generated by the genetic algorithm and storing the excellent solution (step S3), until the predetermined allocation condition is satisfied (step S7), the solid wrinkles, crossover and mutation are performed. It can be repeated (steps S4 to S6).
Here, when generating a solid in the genetic algorithm, a virtual unit 12a, 12b,..., 12m, 13a, 13b,. 14a, 14b,..., 14m, 15a, 15b,..., 15m can be a solid gene sequence allocated according to the load capacity of the system.

Note that the number of genes per individual can be managed as a system constant. In addition, a plurality of the same genes may exist in one solid, or a plurality of solids may exist in the system.
For example, assuming that the CPU capacity of an Intel Pentium (registered trademark) processor operating at a frequency of 3 GHz is 100, the CPU capacity obtained by dividing the CPU capacity by 10 can be used as one gene. Then, a unique gene can be generated for each system to which a load is assigned, and a number of genes corresponding to the load capacity of the system can be allocated to the system.

Here, in the production of the initial solid, specifically, the following procedure can be taken.
(1) The load capacity of a system to be assigned a load is divided for each CPU capacity of one gene, and genes unique to the system are assigned by the number of divisions.
(2) The genes are arranged according to the priority order of the system and the priority order of the physical servers 11a, 11b,.
(3) Except for the solid generated by the method of (2), the initial solid is generated using the initial solid selection width and the random number. In particular,
a) A gene is selected using a random number from genes having an initial solid selection width according to the initial solid production order.
b) When the genes with the earliest order in the initial solid selection width are selected by the number of the systems, the selection target gene is changed to the next gene.
c) The processes of a) and b) are repeated until the number of genes assigned to the solid matches the total number of genes of all systems to which the load is assigned.

  On the other hand, it is assumed that five physical servers 11a, 11b,..., 11e are set as initial conditions for the physical servers 11a, 11b,. The spec capacity of the physical server 11a is 280, the spec capacity of the physical server 11b is 190, the spec capacity of the physical server 11c is 440, the spec capacity of the physical server 11d is 70, and the spec capacity of the physical server 11e is 170. Assume that the initial value of the load capacity allocated to each of the physical servers 11a, 11b,..., 11e is 70% of the spec capacity.

In this case, the load capacity assignable to the physical server 11a is 196≈190, the load capacity assignable to the physical server 11b is 133≈130, the load capacity assignable to the physical server 11c is 308≈300, and the load capacity assignable to the physical server 11d. The possible load capacity is 49≈40, and the load capacity that can be allocated to the physical server 11e is 119≈110.
If the priority order of the physical servers 11a, 11b,..., 11e at the time of load capacity allocation is 2, 3, 1, 4, 5, respectively, the physical server 11c → the physical server 11a → the physical server 11b → physical Loads can be assigned in the order of server 11d → physical server 11e.

For example, it is assumed that there are four systems, ie, Company A system a, Company A system b, Company C system c, and Company D system, and the load capacity of the company A system is 80, Assume that the load capacity of company A's b system is 140, the load capacity of company C's c system is 200, and the load capacity of company D's d system is 80.
In this case, a gene “a” is assigned to the A company a system, and the load capacity of the A company a system can be expressed by eight genes “a”. Further, the gene “b” can be assigned to the company B system, and the load capacity of the company B system can be expressed by 14 genes “b”. Further, a gene “c” can be assigned to the C company C system, and the load capacity of the C company c system can be expressed by 20 genes “c”. Further, a gene “d” is assigned to the D company d system, and the load capacity of the D company d system can be expressed by eight genes “d”.

Then, the genes of the A company a system, the A company b system, the C company c system, and the D company d system according to the priority order of the systems are equal to the number of each system (A company a system = 8, A company b system = 14 By arranging them one by one, C company c system = 20, D company d system = 8), it is possible to generate 50 gene sequences of “aaaaaaaaabbbbbbbbbbbbbbbbccccccccccccccccccccccdddddd”.
Then, if the solid length is 10, by selecting 10 genes according to the method of (3) a), b), c) from 50 gene sequences of “aaaaaaaaabbbbbbbbbbbbbbbbbbccccccccccccccccccccccdddddddd”, 5 solids are selected. K1, K2, K3, K4, K5 can be produced as initial solids.

  If the initial solid generation order is “abcd” and the initial solid selection width is 3, “abc” is designated as the gene to be selected, and 10 genes are selected from the gene “abc” using random numbers. By selecting, for example, ten gene sequences “caabbcbcaa” can be generated as the initial solid K1. Further, by selecting 10 genes from the gene “abc” using random numbers, for example, 10 gene sequences “acabacbbba” can be generated as the initial solid K2. Here, in the solids K1 and K2, since eight genes “a” given to the A company a system are selected, the gene to be selected in the initial solid selection width is changed to the next gene, and the selection target “Bcd” is designated as the gene for.

  Then, by selecting 10 genes from the gene “bcd” using random numbers, for example, 10 gene sequences “dcccdbbcbd” can be generated as the initial solid K3. Further, by selecting 10 genes from the gene “bcd” using random numbers, for example, 10 gene sequences “dccdbccccd” can be generated as the initial solid K4. Further, by selecting 10 genes from the gene “bcd” using random numbers, for example, 10 gene sequences “cbbbbbbbbd” can be generated as the initial solid K5.

The following gene sequences can be generated as solid K1, K2, K3, K4, and K5 in a generation by repeating solid wrinkles, crossovers, and mutations according to a genetic algorithm.
Solid K1 = "cdbbabbccca"
Solid K2 = "ccbbccabcd"
Solid K3 = “acdbbbacc”
Solid K4 = “bbcabdbccca”
Solid K5 = "cccabcbccdd"
Then, when solids K1, K2, K3, K4, and K5 in a generation are generated, the physical servers 11a, 11b,..., 11e are ordered according to the priority order of the physical servers 11a, 11b,. The genes of the solid K1, K2, K3, K4, and K5 can be sequentially allocated to the physical servers 11a, 11b,..., 11e so that the load capacity that can be allocated is reached.

  For example, since the first place in the above-mentioned assignment priority order is the physical server 11c, the physical servers 11c, K2, K3, K4, and K5 are sequentially assigned until the load capacity ≈300 that can be assigned to the physical server 11c is reached. The gene assigned to 11c is “cddbbabbccaccbbbccabcdaccdbbaccacc”. Then, when the genes of the solid K1, K2, K3, K4, and K5 are allocated to the physical server 11c, the physical server 11a with the second highest allocation priority is selected. When the remaining solid K4 and K5 genes are sequentially assigned until the load capacity that can be assigned to the physical server 11a reaches approximately 190, the gene assigned to the physical server 11a becomes “bbcabdbccaccccbcbcd”. Then, when the solid K4 and K5 genes are allocated to the physical server 11a, the physical server 11b having the third highest allocation priority is selected. When the gene of the remaining solid K5 is assigned to the physical server 11b, the gene assigned to the physical server 11b is “d”.

When the genes assigned to these physical servers 11c, 11a, and 11b are rearranged in system units, the physical server 11c → “aaaaaabbbbbbbbccccccccccccccdddd”, the physical server 11a → “aaabbbbbbbccccccccdd”, and the physical server 11b → “d”.
As a result, 5 genes “a”, 8 genes “b”, 12 genes “c”, and 5 genes “d” are allocated to the physical server 11c. 50 CPU capacity is allocated to the A company a system, 80 CPU capacity is allocated to the A company b system, 120 CPU capacity is allocated to the C company c system, and 50 CPU capacity is allocated to the D company d system. .

  In addition, three genes “a”, six genes “b”, eight genes “c”, and two genes “d” are allocated to the physical server 11a. 30 CPU capacities are allocated to the company a system, 60 CPU capacities are allocated to the company A b system, 80 CPU capacities are allocated to the C company c system, and 20 CPU capacities are allocated to the D company d system.

Further, one gene “d” is allocated to the physical server 11b, and 10 CPU capacities are allocated to the D company d system on the physical server 11b.
When the system is arranged on the physical servers 11a, 11b,..., 11n, it is determined whether or not the CPU capacity allocated to the physical servers 11a, 11b. To do. Here, for example, the load capacity that can be allocated to each of the physical servers 11a, 11b,..., 11n can be set to 80% as the upper limit, and the target load capacity that can be allocated can be set to 70%.

FIG. 5 is a flowchart illustrating a method for allocating a physical server load to a system operated on a virtual server according to an embodiment of the present invention.
5, in the implementation of the allocation to the physical servers 11a, 11b,..., 11n in step S2 in FIG. 4, the target load capacity calculation process (step S11) and the physical servers 11a, 11b,. A load capacity allocation process to 11n (step S12) is performed.

  In the target load capacity calculation process, the load capacity and average allocated capacity previously assigned to each physical server 11a, 11b,..., 11n are acquired (step S21). When any of the load capacities allocated to the physical servers 11a, 11b,..., 11n is 50% or less and the average allocated capacity of the physical servers 11a, 11b,. ), The number of physical servers 11a, 11b,..., 11n to be allocated is reduced by one (step S23), the target load capacity that can be allocated is recalculated (step S24), and the process proceeds to the next process. (Step S31).

  On the other hand, any of the load capacities allocated to the physical servers 11a, 11b..., 11n does not satisfy the condition that the average allocated capacity of the physical servers 11a, 11b. In the case (step S22), it is determined whether or not the load capacity of the allocated system has overflowed with respect to the number of physical servers 11a, 11b,..., 11n to be allocated (step S25).

  When the load capacity of the system to be allocated overflows with respect to the number of physical servers 11a, 11b,..., 11n to be allocated, one physical server 11a, 11b,. After increasing by the amount (step S23), the target load capacity that can be allocated is calculated the most (step S24), and the process proceeds to the next process (step S31).

On the other hand, when the load capacity of the system to be allocated does not overflow with respect to the number of physical servers 11a, 11b,..., 11n to be allocated, the load allocated to the physical servers 11a, 11b. It is determined whether or not the capacity is smaller than the target value (step S27). If the load capacity allocated to the physical servers 11a, 11b,..., 11n is smaller than the target value, the target load capacity that can be allocated is 2%. (Step S28), the process proceeds to the next process (step S31).
On the other hand, when the load capacity allocated to the physical servers 11a, 11b,..., 11n is larger than the target value (step S29), the target allocatable load capacity is increased by 1% (step S30), and then The process proceeds (step S31).

Then, when a load is allocated to the physical servers 11a, 11b,..., 11n, the solid is evaluated according to a predetermined allocation condition. Here, examples of the load allocation conditions for the physical servers 11a, 11b,..., 11n include the following items.
The number of system divisions is set to 2 or more in consideration of the response at the time of abnormality of the physical servers 11a, 11b,. This condition is an absolute condition and can be applied on the genetic algorithm.

.., 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,. The number of divisions is 3 → 4 → 2 → 5 → 6 →. This condition is an arbitrary condition and can be applied on the genetic algorithm.
In consideration of power saving, increase the priority order of the physical servers 11a, 11b,. This condition is an arbitrary condition and can be applied in the pre-processing of the genetic algorithm.

Each system allocates equally to the physical servers 11a, 11b,..., 11n in order to secure a degenerate capacity when the physical servers 11a, 11b,. This condition is an arbitrary condition and can be applied on the genetic algorithm.
-Do not exceed the total amount of memory used by each physical server 11a, 11b, ..., 11n. This condition is an absolute condition and can be applied on the genetic algorithm.
The physical servers 11a, 11b,..., 11n scheduled for maintenance are excluded from allocation targets. This condition is an absolute condition and can be applied in the preprocessing of the genetic algorithm.

In order to equalize the margin, the CPU capacity of the physical servers 11a, 11b,. This condition is an arbitrary condition and can be applied on the genetic algorithm.
In consideration of power saving, the total power consumption of the physical servers 11a, 11b,. This condition is an arbitrary condition and can be applied on the genetic algorithm.

FIG. 6 is a flowchart illustrating a method for allocating a physical server load to a system operating on a virtual server and controlling a power supply when the physical server is overloaded according to an embodiment of the present invention.
6, the virtual machine abnormality monitoring means 37 in FIG. 3 waits for a certain time (step S41), then selects the next company according to the priority order (step S42), and further selects the next system according to the priority order (step S42). Step S43). When the virtual machine abnormality monitoring unit 37 selects the next company and the next system, the virtual machine abnormality monitoring unit 37 calculates the load capacity for M minutes of the system (step S44). Then, if the N% CPU threshold value registered in the allocation system management table 39 continues for M minutes or more (step S45), the amount of increase in load allocated to the system is calculated (step S46). A certain virtual server 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m is acquired (step S47).

And the acquired virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m The load is allocated (step S48) and written in the virtual machine switching schedule data 42 (step S49).
Then, the virtual machine abnormality monitoring unit 37 waits for a certain time (step S50), and then, from the virtual machine switching schedule data 42, the virtual servers 12a, 12b,..., 12m, 13a, 13b,. , 14a, 14b,..., 14m, 15a, 15b,..., 15m are acquired (step S51). Then, when there is an expired start / stop time while giving priority to an immediate operation request (step S52), this is notified to the virtual machine control instruction means 43 and the physical machine power supply control instruction means 44. (Steps S53 and S54).

  Then, the virtual machine control instruction means 43 includes virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b,. If there are 15b, ..., 15m, the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, .., 15m are notified to the physical servers 1a, 1b,.

  On the other hand, virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b, ..., 14m, 15a, 15b,. If there is, stop the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. Thus, the physical servers 1a, 1b,.

  In addition, the physical machine power control instruction unit 44 includes virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ... , 15m on the physical servers 1a, 1b,..., 1n, and the physical servers 1a, 1b. Notifying the physical servers 1a, 1b,..., 1n to turn on the power of 1n.

  On the other hand, the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m are connected to the physical servers 1a, 1b,. When stopping on 1n, all the virtual servers 12a, 12b,..., 12m, 13a, 13b,. When stopping 13m, 14a, 14b,..., 14m, 15a, 15b,..., 15m, the physical servers 1a, 1b,. 1b ... 1n is notified.

FIG. 7 is a flowchart showing a method for allocating a load on a physical server to a system operating on the virtual server and controlling a power supply when the physical server or the virtual server is abnormal according to an embodiment of the present invention. .
7, the virtual machine abnormality monitoring means 37 in FIG. 3 includes physical servers 11a, 11b,..., 11n or virtual servers 12a, 12b,..., 12m, 13a, 13b,. 14b,..., 14m, 15a, 15b,..., 15m are detected (step S151), it is determined whether the abnormality has occurred in the physical servers 11a, 11b. Step S152).

  When the abnormality has occurred in the physical servers 11a, 11b,..., 11n, the virtual machine abnormality monitoring means 37 has all the virtual machines operating in the physical servers 11a, 11b,. , 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,..., 15m are collected (step S154). .

  On the other hand, the abnormality occurred in the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m , The virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,. ... Collects a load capacity of 15 m (step S153).

  Then, the physical servers 11a, 11b,..., 11n or the virtual servers 12a, 12b,..., 12m, 13a, 13b, ..., 13m, 14a, 14b,. , 15b,..., 15m is calculated (step S155), and free virtual servers 12a, 12b,..., 12m, 13a, 13b,. .., 14m, 15a, 15b,..., 15m are acquired (step S156).

And the acquired virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m The load is allocated (step S157) and written to the virtual machine switching schedule data 42 (step S158).
Then, the virtual machine abnormality monitoring means 37 waits for a certain time (step S60), and then, from the virtual machine switching schedule data 42, the virtual servers 12a, 12b,..., 12m, 13a, 13b,. , 14a, 14b,..., 14m, 15a, 15b,..., 15m are acquired (step S61). Then, when there is an expired start / stop time while giving priority to an immediate operation request (step S62), this is notified to the virtual machine control instruction unit 43 and the physical machine power supply control instruction unit 44. (Steps S63 and S64).

  Then, the virtual machine control instruction means 43 includes virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b,. If there are 15b, ..., 15m, the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, .., 15m are notified to the physical servers 1a, 1b,.

  On the other hand, virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b, ..., 14m, 15a, 15b,. If there is, stop the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m. Thus, the physical servers 1a, 1b,.

  In addition, the physical machine power control instruction unit 44 includes virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ... , 15m on the physical servers 1a, 1b,..., 1n, and the physical servers 1a, 1b. Notifying the physical servers 1a, 1b,..., 1n to turn on the power of 1n.

  On the other hand, the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m are connected to the physical servers 1a, 1b,. When stopping on 1n, all the virtual servers 12a, 12b,..., 12m, 13a, 13b,. When stopping 13m, 14a, 14b,..., 14m, 15a, 15b,..., 15m, the physical servers 1a, 1b,. 1b ... 1n is notified.

FIG. 8 shows a method for allocating a physical server load to a system operated on a virtual server and controlling a power supply when the physical server is shifted to maintenance or when the virtual server is abnormal according to an embodiment of the present invention. FIG.
In FIG. 8, in the maintenance transition process of the physical servers 11a, 11b,..., 11n, the alternative server activation process is performed at time t0. At time t1, acceptance of a new request for the physical servers 11a, 11b,..., 11n scheduled for maintenance is stopped, and at time t2, the physical servers 11a, 11b,. Notification is made, and the physical servers 11a, 11b,..., 11n scheduled for maintenance are stopped at time t3.

  For example, the time from the scheduled maintenance start time to the terminal notification start time can be 10 minutes. Further, if the A system of Company A is operating on the physical server 11a scheduled for maintenance, and the maximum transaction time of the A system of Company A is 25 minutes, the time from the scheduled maintenance start time to the cancellation of new request acceptance is 25. The time from the scheduled maintenance start time to the alternative server activation process can be 1 hour and 25 minutes.

Then, when the alternative server activation process is performed in accordance with the virtual machine switching schedule data 42 in FIG. 3 and the acceptance of a new request to the physical server 11a scheduled for maintenance is stopped, the virtual server 12a operating on the physical server 11a. , 12b,..., 12m decrease sequentially.
Then, an alarm is notified to the client terminal operating at the terminal notification start time by a pop-up message, and when the scheduled maintenance start time is reached, the maintenance scheduled physical server 11a is stopped. When the physical server 11a scheduled for maintenance is to be stopped, the physical machine power control instruction unit 44 notifies the physical server 1a to turn off the power to the physical server 1a.
Here, when processing is being performed on the physical server 11a, a message can be notified to the administrator, and the processing can be suspended or forcibly stopped.

FIG. 9 is a flowchart showing an operation at the time of stopping acceptance of a new request at the time of maintenance shift of the physical server according to an embodiment of the present invention.
9, the virtual machine abnormality monitoring means 37 in FIG. 3 reads the operation schedule of the physical servers 11a, 11b..., 11n scheduled for maintenance from the allocation system management table 39 (step S71), and (maintenance start time- It is determined whether or not (maximum transaction time) <current time (step S72).

  If (maintenance start scheduled time−maximum transaction time) <current time, the item “machine state” in the physical machine management table 38 is changed to “maintenance stop requested” (step S73). Then, when the machine state of the physical machine management table 38 is changed to “maintenance stop requesting”, the load distribution means 45 will change the virtual servers 12a, 12b,. , 12m, 13a, 13b,..., 13m, 14a, 14b,..., 14m, 15a, 15b,.

FIG. 10 is a flowchart showing an operation at the time of the maintenance shift of the physical server according to the embodiment of the present invention.
10, the virtual machine abnormality monitoring means 37 in FIG. 3 reads the operation schedule of the physical servers 11a, 11b,..., 11n scheduled for maintenance from the allocation system management table 39 (step S81), and (planned maintenance start time− It is determined whether (terminal notification start time) <current time (step S82).

  If (maintenance start scheduled time−terminal notification start time) <current time, the item “machine state” in the physical machine management table 38 is changed to “maintenance stop request & message notification” (step S83). When the machine state of the physical machine management table 38 is changed to “maintenance stop request & message notification”, the application of each company stops the physical servers 11a, 11b..., 11n at the scheduled maintenance start time. The message is notified to the client terminal (step S84).

FIG. 11 is a flowchart showing an operation at the time of the maintenance shift of the physical server according to the embodiment of the present invention.
11, the virtual machine abnormality monitoring means 37 in FIG. 3 reads the operation schedules of the physical servers 11a, 11b,..., 11n scheduled for maintenance from the allocation system management table 39 (step S91), and scheduled maintenance start time <current It is determined whether it is time (step S92).

  If the scheduled maintenance start time is less than the current time, the virtual servers 12a, 12b,..., 12m, 13a, 13b running on the physical servers 11a, 11b,. .. 13m, 14a, 14b,..., 14m, 15a, 15b,..., 15m while determining whether there is no more request, the virtual servers 12a, 12b,. 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m are stopped (steps S93, S94).

  Then, all virtual servers 12a, 12b,..., 12m, 13a, 13b,..., 13m, 14a, 14b,. When 14m, 15a, 15b,..., 15m are stopped (step S95), stop requests for the physical servers 11a, 11b,..., 11n are written in the virtual machine switching schedule data 42 (step S96). ).

  Then, the virtual machine control instruction means 43 periodically refers to the virtual machine switching schedule data 42, and virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ... When a stop request for 14m, 15a, 15b, ..., 15m is found, the virtual servers 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ... ., 14m, 15a, 15b,..., 15m are instructed to stop (step S98).

When the physical machine power control instruction means 44 periodically refers to the virtual machine switching schedule data 42 and finds a stop request for the physical servers 11a, 11b,..., 11n, the physical servers 11a, 11b. , 11n is instructed to stop (step S99).
When the physical servers 11a, 11b,..., 11n receive a stop instruction from the physical machine power control instruction means 44, the physical machine power control instruction means 22 sends the physical servers 11a, 11b,. The power can be turned off.

1 is a block diagram illustrating a schematic configuration of a virtual server management system to which a power supply control device according to a first embodiment of the present invention is applied. It is a figure which shows an example of the allocation method to the physical server of the system operated on the virtual server which concerns on one Embodiment of this invention. It is a block diagram which shows schematic structure of the virtual server management system with which the power supply control apparatus which concerns on 2nd Embodiment of this invention is applied. 4 is a flowchart illustrating a method for assigning a system operated on a virtual server using a genetic algorithm according to an embodiment of the present invention to a physical server. It is a flowchart which shows the method to allocate the load of a physical server with respect to the system operate | moved on the virtual server which concerns on one Embodiment of this invention. 6 is a flowchart illustrating a method for allocating a physical server load to a system operating on a virtual server and controlling a power supply when the physical server is overloaded according to an embodiment of the present invention. It is a flowchart which shows the method of allocating the load of a physical server with respect to the system operate | moved on a virtual server, and controlling a power supply at the time of abnormality of the physical server or virtual server which concerns on one Embodiment of this invention. FIG. 3 is a diagram showing a method for allocating a physical server load to a system operated on a virtual server and controlling a power supply when the physical server maintenance transition or a virtual server abnormality occurs according to an embodiment of the present invention. is there. It is a flowchart which shows the operation | movement at the time of the new request reception stop at the time of the maintenance transfer of the physical server which concerns on one Embodiment of this invention. It is a flowchart which shows the operation | movement at the time of the terminal notification start at the time of the maintenance transfer of the physical server which concerns on one Embodiment of this invention. It is a flowchart which shows the operation | movement at the time of the maintenance transfer of the physical server which concerns on one Embodiment of this invention.

Explanation of symbols

1a, 1b, ..., 1n, 11a, 11b, ..., 11n Physical servers 2a, 2b, ..., 2m, 3a, 3b, ..., 3m, 4a, 4b, ..., 4m 5a, 5b, ..., 5m, 12a, 12b, ..., 12m, 13a, 13b, ..., 13m, 14a, 14b, ..., 14m, 15a, 15b, ..., 15m Virtual server 6 Load status collection means 7 Load allocation means 8 Power supply control means 9 Power supply control device 16 Virtual machine management manager 17 Operation status collection means 18 Operation result transmission means 19, 36 Operation result data 20 Operation result collection means 21 Virtual machine control means 22 Physical machine power control instruction means 23, 32 Transmission / reception control means 31 Load balancer 33 Operating state receiving means 34 Operating result receiving means 35 Virtual machine state table 37 Temporary Virtual machine abnormality monitoring means 38 Physical machine management table 39 Allocation system management table 40 Virtual machine allocation scheduler 41 Actual operation data by hour 42 Virtual machine switching schedule data 43 Virtual machine control instruction means 44 Physical machine power control instruction means 45 Load distribution means

Claims (9)

Load allocating means for allocating loads applied to a plurality of physical servers to a plurality of virtual servers operating on at least one physical server;
Power supply control means for turning off the power of a physical server to which no load is assigned by the load assignment means while turning on the power of the physical server to which the load is assigned by the load assignment means. Power control device. Load status collection means for collecting the load status of a system operated on a virtual server from a plurality of physical servers;
Load allocation means for allocating a load applied to the physical server based on a load status of a system operated by the virtual server;
And a power control means for turning on the power of the physical server to which the load is assigned by the load assignment means, and for turning off the power of the physical server to which the load is not assigned by the load assignment means. Power control device.   3. The power supply control apparatus according to claim 2, wherein the load allocating unit allocates the load so that the load applied to the physical server falls within a predetermined range of processing capacity of the physical server. When there is a second physical server that can afford to allocate the load of all the systems operating on the first physical server, the load allocating unit determines all the systems operating on the first physical server. Move to the second physical server,
3. The power control apparatus according to claim 2, wherein the power control means turns off the power of the first physical server. The power control means turns on a physical server that is not currently operating when the load on the physical server that is currently operating exceeds an upper limit.
3. The power supply control apparatus according to claim 2, wherein the load allocation unit reallocates the load applied to the physical server so that the load applied to the physical server does not exceed an upper limit value. The load allocating means is
Using a reference unit obtained by dividing the processing capacity of the processor as a gene, a load capacity of a system operated by the virtual server is generated by generating a solid represented by the sequence of the gene,
6. A solid gene obtained by repeating selection and crossover according to a genetic algorithm is sequentially allocated to the physical server within a load capacity range set for the physical server to be allocated. The power supply control device according to any one of the above. Multiple physical servers,
A plurality of virtual servers each started on the physical server;
Load distribution means for allocating a load applied to the physical server based on a load status of a system operated on the virtual server;
A virtual server comprising: a power control device that turns off a physical server that has not been assigned a load by the load assignment device while operating a physical server to which the load is assigned by the load assignment device Management system. Allocating loads on a plurality of physical servers to a plurality of virtual servers running on at least one physical server;
Turning off the power of the physical server to which the load is not assigned while turning on the power of the physical server to which the load is assigned. Collecting the load status of the system running on the virtual server from multiple physical servers;
Allocating a load on the physical server based on a load status of a system operated on the virtual server;
A power control program for causing a computer to execute a step of turning off the power of a physical server that has not been assigned the system load while turning on the power of the physical server to which the system load is assigned.

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