JP2013232807A - Data center apparatus, backup service execution method, and program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a data center device, a backup service execution method, and a program which allow costs in system construction to be suppressed and allow influences on services due to IO loads to be reduced.SOLUTION: A virtual host server includes a plurality of CPUs and a plurality of virtual servers for executing a communication service. A backup processing information table and CPU assignment table store server IDs for identifying the virtual servers, backup schedules for executing a backup service for the communication service, and CPUs assigned for the backup service, in association with each other. In addition, a provisioning server executes, when a request for the execution of a communication service by a user device occurs, the communication service by using a virtual server associated with the user device; and executes, if backup is required by executing the communication service, the backup service by the backup schedule and CPU associated with the virtual server in the table.

Description

  Embodiments described herein relate generally to a data center apparatus, a backup service execution method, and a program used in a communication system such as an IP (Internet Protocol) telephone system.

  2. Description of the Related Art In recent years, IP telephone systems that transmit and receive images and sounds as packet data in both directions via an IP (Internet Protocol) network such as a LAN (Local Area Network) or the Internet have become widespread. In this IP telephone system, for example, an IP telephone server is installed for each company or individual (user), and an IP telephone terminal can be registered for each IP telephone server. In such an IP telephone system, it is possible not only to perform inter-line communication and outgoing / incoming calls, but also to perform internal communication and outgoing / incoming calls between IP telephone servers via the IP network.

JP 2009-181578 A JP 2008-547123 A JP 2002-516432 A

  In the IP telephone system, it is necessary to regularly backup setting data, user management information, etc. to the IP telephone server in preparation for service failure.

  However, the CPU is occupied by waiting for IO (Input-Output) when writing to a disk having a large data size for backup and a low processing speed. As a result, processing delays, locks, and the like are also exerted on services that are required to operate in real time (hereinafter referred to as real time services).

  On the other hand, a method of preparing a plurality of servers dedicated to storage for each company or each individual is also conceivable, but there is an equipment cost for each company or each individual.

  Accordingly, the present invention has been made in view of the above-described problems. A data center device, a backup service execution method, and a program that can reduce the cost for system construction and reduce the influence on the service due to the IO load. The purpose is to provide.

  According to the present embodiment, the data center apparatus is connected to a user apparatus as a communication terminal via a communication network, and is related to an exchange process between the communication terminals or between the communication terminal and the communication line with respect to the user apparatus. A data center apparatus that provides an arbitrary communication service, and includes a processing unit, a storage unit, and a service control unit. The processing unit includes a plurality of CPUs and a plurality of virtual servers for executing the communication service. The storage unit stores a management table in which a server ID for specifying the virtual server, a backup schedule for executing a backup service for the communication service, and a CPU assigned to the backup service are associated with each other. The service control means executes a communication service using the virtual server associated with the user device when a request for execution of the communication service by the user device occurs, and needs to be backed up by executing the communication service. In this case, the backup service is executed by the backup schedule and CPU corresponding to the virtual server in the management table.

It is a schematic block diagram of the communication system in this embodiment. It is a figure which shows the specific structure of the virtualization host server, telephone conference server, and web conference server which are shown in FIG. It is a figure which shows an example of the user database shown in FIG. It is a figure which shows the specific structure of the provisioning server shown in FIG. It is a figure which shows an example of the backup process information table shown in FIG. It is a figure which shows an example of the CPU allocation table shown in FIG. It is a flowchart which shows the control procedure of the data center when the IP telephone terminal shown in FIG. 1 logs in. It is a flowchart which shows the method of performing a backup service by the provisioning server shown in FIG. It is a flowchart which shows the method of optimizing backup time.

  Hereinafter, embodiments will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the same part in subsequent figures, the detailed description is abbreviate | omitted, and a different part is mainly described. In the following embodiments, the same description is omitted.

  In the present embodiment, an IP telephone server installed for each company or individual is shared with a server installed in a data center provided on the cloud via the Internet, so that each company or individual An installed IP telephone server is unnecessary.

  Also, in the data center provided on the cloud, exchange of data related to calls used by servers, data related to user settings, maintenance setting data for system operation, billing data, traffic data, debugging data, etc. It is required to back up service data for the service to another memory or another server.

  In this case, increase the IO cache size of the storage server, divide and tune the partition to distribute the IO cache, prepare multiple storage servers and distribute the database fixedly, load A method of reducing the influence of the IO load by allocating a backup destination according to the method can be considered. For this reason, a cost is required for constructing the system.

  In view of this, the present embodiment enables the construction of the system to be realized at low cost.

  FIG. 1 is a schematic configuration diagram of a communication system according to this embodiment. US1 to USm are user sites, DC1 to DCi (i is a natural number) provided on the cloud are data centers, and MS is a manufacturer site. .

  Here, among the user sites US1 to USm, the user site US1 will be described as a representative. The user site US1 includes IP telephone terminals IPT1 to IPTn, a personal computer PC, and a router RT. These devices are connected to each other via the LAN 1. A gateway GW1 is connected to the LAN1. IP telephone terminals IPT1 to IPTn are telephones such as hardphones and softphones, and are provided with a call processing function and a media information processing function such as video. The gateway GW1 connects the LAN1 and the public network NW1 such as an analog telephone network, and has a communication protocol and signal format conversion function between the LAN1 and the public network NW1.

  The router RT is connected to the Internet INW, and is further connected to the data centers DC1 to DCi from the Internet INW. Here, the data center DC1 will be described as a representative.

  The data center DC1 is a data center provided on the cloud. The data center DC1 is connected to an existing public IP telephone network NW2 via a communication network such as the Internet, and can communicate with data centers DC2 to DCi of other companies. The data center DC1 includes virtual host servers (HW Nodes: hardware nodes) N1 to Np (p is a natural number), a conference call server CSV1, a web conference server CSV2, an operation support server CSV3, and a billing management server CSV4. A provisioning server CSV5, routers CRT1 to CRTq (q is a natural number), and a user database DB, which are connected to each other via LAN2. Routers CRT1 to CRTq are connected to the Internet INW, and are further connected to the user site US from the Internet INW. Note that the virtualization host servers N1 to Np, the telephone conference server CSV1, the web conference server CSV2, the operation support server CSV3, the charging management server CSV4, and the provisioning server CSV5 do not need to be physically independent, but have a plurality of roles. May be physically combined with a single server. In addition, since it is applied as a virtualized resource, the physical server configurations of the telephone conference server CSV1, the web conference server CSV2, the operation support server CSV3, the charging management server CSV4, and the provisioning server CSV5 are as follows. It may be composed of a plurality of servers.

  FIG. 2 is a diagram showing a specific configuration of the virtualization host servers N1 to Np.

  The virtual host servers N1 to Np exchange calls between the IP telephone terminals IPT1 to IPTn of the user site US1 and the IP telephone terminals IPT1 to IPTn and the subscriber line of the public network NW1. This is a virtual server for realizing a function as a basic function.

  By the way, the virtual host servers N1 to Np, the conference call server CSV1 and the web conference server CSV2 divide the functions of general appliance IP phone servers arranged in the respective user sites US1 to USm to obtain data on the cloud. This is realized in the center DC1.

  Here, in one virtualization host server N1, a virtual environment for allowing a plurality of virtual servers to operate thereon is constructed. The virtual server is provided with one or a plurality of Admin containers and CP containers according to functions and capacities.

  First, the CP container has a call function, a voice mail function, an emergency call function, and the like, which are basic functions as a telephone function. Depending on the capacity of the resources provided by the virtual server and the operation method, management can be facilitated by accommodating the connection setting function between the terminals of one conventional appliance type IP telephone server in one CP container. Of course, the accommodation method of the CP container is not limited to this.

  The operation management function is collected in the Admin container. The Admin container has maintenance and management functions such as CP container setting and license management, telephone conference, and web conference setting. The Admin container is a collection of the maintenance and operation functions provided in each server in the conventional appliance type IP phone server, and maintenance and management of a plurality of CP containers, that is, user systems in one container. Make it possible.

  The telephone conference server CSV1 has a function of performing a three-party conference connection by voice between the IP telephone terminals IPT1 to IPTn of the user site US1 with which the contract is made. The conference call container has a conference call function and is shared by a plurality of CP containers, that is, user systems.

  The web conference server CSV2 has a function of performing a three-party conference connection using media such as video between the IP telephone terminals IPT1 to IPTn of the user site US1 with which a contract is made. The web conference container has a web conference function and can be shared by a plurality of CP containers.

  Returning to FIG. 1, the operation support server CSV3, based on the user database DB, monitors the virtualization host servers N1 to Np, the telephone conference server CSV1 and the web conference server CSV2, detects a failure, performs maintenance, issues an alarm, and collects logs. It has a function to automatically execute collection, batch data backup, program update, IP phone terminal firmware update, QOS monitor, and the like. Furthermore, it has a function of managing inventory information for automation in a database.

  The billing management server CSV4 has a function of billing according to the usage amount of the telephone function of the user, acquires user information from the manufacturer site MS, and performs billing processing for the user.

  The provisioning server CSV5 has a function of acquiring license information purchased by the user from the manufacturer site MS and allocating resources for a call function, a telephone conference function, and a web conference function according to the number of purchased licenses. Also, the availability of the telephone conference server and the web conference server is set according to the user who has acquired the license.

  FIG. 3 shows a user database DB provided in the provisioning server CSV5. In this user database DB, an IP address assigned to a user in association with an individual identification number (user ID) assigned to each user, user setting resources (including resources that can be set), which will be described later, A device identification number as secret information given to the user, a password as authentication information, and IP telephone terminals IPT1 and IPT2 that are logged in are stored. Here, examples of the setting resource include a call function, a voice mail function, an emergency call function, a telephone conference function, and a web conference function.

  Further, the operation support server CSV3, the billing management server CSV4, and the provisioning server CSV5 are connected to the manufacturer site MS via, for example, a dedicated line.

  FIG. 4 is a diagram showing a specific configuration of the provisioning server CSV5.

  The provisioning server CSV5 includes a virtual server generation / management unit 10 and a CPU allocation management unit 11.

  The virtual server generation / management unit 10 generates backup virtual servers in the virtualization host servers N1 to Np according to the estimated backup load, and manages the generated virtual servers.

  The CPU allocation management unit 11 updates the CPU allocation content according to the processing content performed by the virtual server, and instructs each related virtual server to change the CPU allocation.

  Further, the provisioning server CSV5 is provided with a backup processing information table 12 and a CPU allocation table 13.

  FIG. 5 is a diagram illustrating an example of the backup processing information table 12.

  The backup processing information table 12 is a table in which backup information obtained at the time of data backup is stored. The backup processing information table 12 includes individual identification numbers (server IDs) assigned to the respective virtualization host servers N1 to Np, virtual server numbers (virtual server numbers) generated in the respective virtualization host servers N1 to Np, The host name of each virtual server, the time slot number for backup (backup Timeslot No), and the time required for the backup processing by each virtual server are stored. That is, the backup processing information table 12 associates the server IDs that specify the virtualization host servers N1 to Np with the backup processing time.

  Data to be backed up includes, for example, data related to calls, data related to user settings (transfer settings, incoming call rejection settings, etc.), maintenance setting data for system operation, billing data related to calls, traffic data, and debugging data Data (err log, trace log) etc.

  FIG. 6 is a diagram illustrating an example of the CPU allocation table 13.

  The CPU allocation table 13 is a table that stores CPU allocation information used in accordance with processing. The CPU assignment table 13 stores the individual identification numbers (server IDs) assigned to the respective virtualization host servers N1 to Np, the type of process, the number of processes for the type of process, and the used CPU information assigned to each virtual server. Is done. That is, the CPU allocation table 13 associates the server IDs that specify the virtualization servers N1 to Np with the CPU allocation at the time of backup.

Next, the operation in the above configuration will be described.
(User system registration)
First, in order for the user to use the system of the present embodiment, a contract is made with a dealer who performs brokerage. The content of the contract is licensed by making a contract regarding the number of necessary extension terminals, the number of lines, and whether to use additional functions (conference function, web conferencing function, etc.). Here, usually, there are many cases where charges differ depending on the number of extension terminals, the number of lines, and the presence or absence of additional functions.

  The dealer operates the user site US1 according to the content of the contract with the user and registers the contracted user.

  Corresponding to the operation of the user site US1, the provisioning server CSV5 of the data center DC1 controls the admin container of the virtualization node and sets the necessary CP container. In addition, whether to use the telephone conference function or the web conference function is set.

  When such setting is completed, the user can use the call function, the conference call function, or the web conference function.

(Login operation)
FIG. 7 is a flowchart showing a control procedure of the data center DC1 when, for example, the IP telephone terminal IPT1 logs in.

  When using the IP telephone terminal IPT1, for example, a user of the IP telephone terminal IPT1 accesses the data center DC1.

  Then, the user of the IP telephone terminal IPT1 is prompted by the prompt of the IP telephone terminal IPT1, dials in the user ID (extension number) and password, and tries to log in to the data center DC1. When these inputs are completed, the user ID and password are transmitted to the data center DC1.

  The data center DC1 that has received the login request from the IP telephone terminal IPT1 (step S71) checks whether the user ID (extension number) matches the ID group registered in the user database DB in advance. If not, login is not permitted, and an error message indicating that the user name does not exist is returned to the IP telephone terminal IPT1 (step S73).

  In order to prevent double login with the same ID, even if the data center DC1 matches the registered ID, if it is already logged in with that ID (step S74), no new login is permitted. Here, a message indicating that the login has been completed is returned to the IP telephone terminal IPT1 as an error message (step S73).

  If the ID is OK, the data center DC1 performs password authentication (step S75). If the password is not correct, the data center DC1 returns an error message to that effect to the IP telephone terminal IPT1 (step S73).

  On the other hand, if all the checks are OK, the data center DC1 returns an authentication completion message to the IP telephone terminal IPT1 (step S76), and the user database DB and the virtual host server N1 are logged in as logged-in users. Registration in a login management table (not shown) is performed.

  Also, the data center DC1 operates the conference call container TC1 and the web conference container WC1 that can be shared by the CP container (CP1) on the virtualization host server N6 by the operation support server CSV3.

(Backup service execution method)
Next, a backup service execution method in the data center devices DC1 to DCi will be described.

  FIG. 8 is a flowchart showing a backup service execution method.

  First, a service purchase procedure is performed between the manufacturer site MS and the user site US1, and an instruction to generate a virtual server in accordance with the service is notified from the manufacturer site MS to the provisioning server CSV5. The provisioning server CSV5 receives an instruction to generate a virtual server (CP container), and the virtual server generation / management unit 1 generates a virtual server (CP container) for each of the virtualization host servers N1 to Np (step S81). ).

Next, the provisioning server CSV5 assigns the virtual server number to be unique according to a random or specific rule (step S82). For example, the backup time slot is assigned according to the following formula, and the assigned content is registered in the backup processing information table 12.

  Then, the provisioning server CSV5 sets a backup schedule so as to perform backup processing in accordance with the assigned time slot for the backup service unit 15 of the generated virtual server (step S83).

  Next, if there is data that needs to be backed up in accordance with the contents of processing performed by the generated virtual server, the number of processes for the backup type of the corresponding server in the CPU allocation table 4 is incremented and registered (step S84). Here, when the amount of data that needs to be backed up exceeds the predetermined upper limit number of backup processes per CPU and the upper limit number of CPUs that can be assigned to backup (step S85), the virtual server is switched to another host server. (Step S86), the data backup processing for the amount exceeding the upper limit is transferred to a virtual server of another host server.

  Next, the number of CPUs to be assigned is determined based on the predetermined upper limit number of backup processes per CPU, the upper limit value of the number of CPUs that can be assigned to backup and the number of backup processes, and the CPU number to be used for each is determined accordingly. Then, it is registered in the CPU allocation table 13 (step S87).

  Thereafter, the backup service is executed in accordance with the registered contents of the backup processing information table 12 and the CPU allocation table 13 (step S88).

(How to optimize backup time)
FIG. 9 is a flowchart showing a method for optimizing the backup time.

  First, each time the backup is performed by the backup service unit 15 of the virtual server generated by the method of assigning by changing the backup time, the processing time is recorded in the backup processing information table 12 (step S91).

  Next, the virtual server generation / management unit 10 on the provisioning server CSV5 refers to the backup processing information table 12 periodically (for example, once a week, once a day, etc.) and processes the processing time for each time slot. Is calculated, and it is confirmed whether there is a bias in the load according to the time slot (step S92). If the load is uneven, for example, smoothing is performed by the following process (step S93).

    Processing 1: 1 Processing time of 1 time slot-Average value of all time slots is calculated.

    Process 2: Among the time slots where the average value is positive, the allocation of the virtual server whose processing time is close to the plus value is changed to a time slot where the average value is negative.

  As a result of the smoothing, the backup processing information table 12 is updated, and the change setting of the time slot allocation is performed for the backup service unit 15 of the changed virtual server (step S94).

  By obtaining the CPU allocation table 13 by the above method, the provisioning server CSV5 refers to the CPU allocation table 13 and requests the CPU number used for the real-time service unit 14 and the CPU number used for the backup service unit 15. Notify the original virtual server.

  The virtual server changes the CPU allocation of the real-time service unit 14 and the backup service unit 15 according to the notification content, and starts the backup process.

  When the backup processing is completed, the CPUs are reassigned so that all the CPUs are used by the real-time service unit 14.

  That is, even if IO write wait occurs and the CPU that performs the IO wait is in a wait state, the real-time service can be set by exclusively setting the CPU used for the real-time service unit 14 and the backup service unit 15. The unit 14 is not affected by the waiting for IO. In addition, by dynamically changing the CPU allocation, all the CPU resources can be used by the real-time service unit 14 when the backup service unit 15 is not operating, so there is no waste.

Furthermore, by combining the above methods, it is possible to dynamically generate a virtual server that provides the backup service unit 15, and by distributing the servers that operate the virtual server using the load information of the system, According to the requested backup amount, the backup service unit 15 using the optimal resource amount can be provided, and the system can be constructed without incurring unnecessary costs. The data center devices DC1 to DCi can determine the allocation of CPUs for each service based on the backup processing information table 12 and the CPU allocation table 13 and dynamically reflect them. .

  Therefore, the data center devices DC1 to DCi in the present embodiment can reduce the influence on the service due to the IO load. Moreover, the cost for system construction can be suppressed.

  Here, the data center devices DC1 to DCi may have a configuration having a plurality of multi-core servers or a configuration having a plurality of single-core servers.

  Further, the backup allocation may be performed by the provisioning server CSV5, or may be shared among the virtual servers that provide the service, and each virtual server may allocate autonomously.

  Furthermore, other statistical information such as the CPU usage rate may be used for the load data at the time of backup, which is the basis for determining the backup destination and time. These pieces of information may be collected dynamically or may be based on constants assumed in advance.

  Further, it may be applied not only to a backup service but also to a service such as a database that needs to write a large amount of data to a disk.

  As mentioned above, although some embodiment of this invention was described, these embodiment is shown as an example and is not intending limiting the range of invention. These embodiments can be implemented in various other forms, and various omissions, replacements, and changes can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are also included in the invention described in the claims and the equivalents thereof.

  US: User site, IPT1 to IPTn: IP telephone terminal, PC: Personal computer, RT ... Router, GW1 ... Gateway, NW1 ... Public network, INW ... Internet, DC1-DCi ... Data center device, N1-Np ... Virtualization Host server (HW Node: hardware node), CSV1 ... teleconference server, CSV2 ... web conference server, CSV3 ... operation support server, CSV4 ... billing management server, CSV5 ... provisioning server, TC1 ... teleconference container, WC1 ... web conference container DESCRIPTION OF SYMBOLS 10 ... Virtual server production | generation / management part, 11 ... CPU allocation management part, 12 ... Backup processing information table, 13 ... CPU allocation table, 14 ... Real time service part, 15 ... Backup service part, CRT1-CRTq ... Router, NW2 ... Public IP telephone network, DB ... User database, MS ... Manufacturer site.

Claims (9)

A data center device that is connected to a user device as a communication terminal via a communication network and provides the user device with any communication service related to an exchange process between communication terminals or between a communication terminal and a communication line. And
A processing unit having a plurality of CPUs and having a plurality of virtual servers for executing the communication service;
Storage means for storing a management table in which a server ID for specifying the virtual server, a backup schedule for executing a backup service for the communication service, and a CPU assigned to the backup service are associated with each other;
When a communication service execution request is generated by the user device, the communication service is executed using the virtual server associated with the user device, and the management is performed when backup is required by executing the communication service. A data center apparatus comprising a backup schedule corresponding to the virtual server in the table and service control means for executing a backup service by the CPU.   The service control means includes: a backup schedule for executing a backup service for the virtual server when the amount of data that needs to be backed up exceeds the amount of data required for the backup processing that is obtained from the management table; The data center apparatus according to claim 1, wherein at least one of the CPUs to be assigned is dynamically changed.   The service control means executes the backup service using another virtual server when the amount of data that needs to be backed up exceeds the amount of data that is required for the backup processing that is obtained from the management table. The data center apparatus described.   The data center apparatus according to claim 1, wherein the processing unit includes a plurality of multi-core servers or single-core servers.   The data center apparatus according to claim 1, wherein the processing unit executes CPU allocation at the time of backup by the virtual server.   The service control means writes a large amount of data to a disk by a backup schedule and a CPU corresponding to the virtual server in the management table when it is necessary to write a large amount of data to the disk by executing the communication service. 1. A data center apparatus according to 1. Connected to a user device as a communication terminal via a communication network, and provides the user device with any communication service related to an exchange process between communication terminals or between a communication terminal and a communication line, and a plurality of CPUs A backup service execution method used in a data center apparatus including a processing unit having a plurality of virtual servers for executing the communication service,
Storing in a memory a management table in which a server ID for identifying the virtual server, a backup schedule for executing a backup service for the communication service, and a CPU assigned to the backup service are associated with each other;
When a communication service execution request is generated by the user device, the communication service is executed using the virtual server associated with the user device,
A backup service execution method for executing a backup service by a backup schedule and a CPU corresponding to the virtual server in the management table when backup is necessary by executing the communication service.   At least one of a backup schedule for executing a backup service for the virtual server and a CPU assigned to the backup service when the amount of data that needs to be backed up exceeds the amount of data required for the backup processing obtained from the management table The backup service execution method according to claim 7, wherein the backup service is dynamically changed. Executed by a data center device that is connected to a user device as a communication terminal via a communication network and provides the user device with any communication service related to an exchange process between communication terminals or between a communication terminal and a communication line. A program to be executed by the computer,
A processing unit having a plurality of CPUs and having a plurality of virtual servers for executing the communication service;
Storage means for storing a management table in which a server ID for specifying the virtual server, a backup schedule for executing a backup service for the communication service, and a CPU assigned to the backup service are associated with each other;
When a communication service execution request is generated by the user device, the communication service is executed using the virtual server associated with the user device, and the management is performed when backup is required by executing the communication service. A backup schedule corresponding to the virtual server in the table and a program that operates as a service control means for executing a backup service by the CPU.

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