JP2018181086A - Monitoring terminal device, monitoring system, monitoring method, and monitoring control program - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a monitoring terminal device for preventing congestion of processing of fault control from occurring in a centralized management device when the centralized management device centrally manages fault occurred in a plurality of monitoring object devices, a monitoring system, and a monitoring control program.SOLUTION: A monitoring terminal device 41 can monitor a state of at least any of a plurality of monitoring object devices 42 via a centralized management device 50 for acquiring and managing fault information output from the plurality of monitoring object devices 42 using a communication line, and includes: an acquisition unit 410 for acquiring the fault information in place of the centralized management device 50; and a storage unit 411 for storing the fault information acquired by the acquisition unit 410.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a system having a monitoring terminal device capable of monitoring that a failure has occurred in a monitoring target device and a central management device that centrally manages failures occurring in a plurality of monitoring target devices. It relates to technology to monitor outbreaks.

  In the information processing system, it is necessary to monitor the occurrence of a failure or an illegal operation or the like in an electronic device communicably connected by a communication network. In recent years, with the increase in the size of information processing systems, the number of electronic devices to be monitored (monitored devices) is also rapidly increasing. Therefore, expectations for technology for steadily monitoring a large number of monitored devices are increasing.

  As a technology related to such a technology, Patent Document 1 discloses a security monitoring control system that constantly performs monitoring control on one monitoring terminal (monitoring target device) from a plurality of base-side devices. There is. In this system, monitoring control of a plurality of monitoring terminals is performed from a base-side device provided at at least two or more monitoring bases via a communication network. The base-side device includes a database storing various data including monitoring control data and setting data related to the monitoring terminal, and a control server that controls each component of the base-side device. The control server communicates with other base-side devices to execute, at predetermined timing, data synchronization processing for maintaining the sameness of the various data stored in the database among the bases.

JP, 2009-098757, A

  The information processing system usually has a configuration in which a central management device centrally manages failures that occur in a large number of monitored devices. Such an information processing system can monitor that a failure has occurred in a monitoring target device, and includes one or more monitoring terminal devices capable of issuing an instruction to the monitoring target device.

  In such a general information processing system, for example, when a failure occurs simultaneously in a plurality of monitoring target devices, or when failure information is repeatedly output from a certain monitoring target device, the failure that has occurred in the central management device There is a risk that congestion may occur in processing (for example, processing of collecting fault information) that manages If a problem occurs in the operation of the central management device due to this congestion, the general information processing system affects the entire system regarding the function of managing the failure, and thus the damage due to the delay in the recovery process and the like increases There is a problem that the possibility of doing Patent Document 1 does not mention this problem. The main object of the present invention is to provide a monitoring terminal device etc. which solves this problem.

  A monitoring terminal device according to an aspect of the present invention receives at least the plurality of monitoring target devices via a central management device that acquires and manages failure information output from the plurality of monitoring target devices using a communication line. A monitoring terminal device capable of monitoring any state, an acquisition unit for acquiring the failure information by the central management device, and a storage unit for storing the failure information acquired by the acquisition unit; Prepare.

  In another aspect for achieving the above object, a monitoring method according to an aspect of the present invention is to monitor failure information output from a plurality of monitoring target devices using a communication line and manage it via a central management device. A monitoring terminal device capable of monitoring the state of at least one of the plurality of monitoring target devices substitutes acquisition of the failure information by the central management device, and stores the acquired failure information in a storage unit.

  Further, in a further aspect of achieving the above object, a monitoring control program according to an aspect of the present invention acquires and manages fault information output from a plurality of monitoring target devices using a communication line. Acquisition processing for substituting the acquisition of the fault information by the central management device to the monitoring terminal device capable of monitoring the state of at least one of the plurality of monitoring target devices via the processing; Storage processing for storing fault information in storage means.

  Furthermore, the present invention can also be realized by a computer-readable non-volatile storage medium storing such a monitoring control program (computer program).

  The present invention makes it possible to prevent the occurrence of congestion of processing related to fault management in the central management apparatus when the central management apparatus centrally manages faults occurring in a plurality of monitoring target apparatuses.

It is a block diagram showing composition of surveillance system 1 concerning a 1st embodiment of the present invention. It is a flowchart which shows operation | movement of the monitoring system 1 which concerns on the 1st Embodiment of this invention. It is a block diagram which shows the structure of the monitoring terminal device 41 which concerns on the 2nd Embodiment of this invention. It is a block diagram which shows the structure of the information processing apparatus 900 which can perform the monitoring terminal device which concerns on each embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. With the background that the information processing performance of the monitoring terminal has been improved in recent years, the present invention is an invention focusing on that the monitoring terminal can substitute for some failure processing functions of the central management device. is there.

First Embodiment
FIG. 1 is a block diagram conceptually showing the structure of a monitoring system 1 according to a first embodiment of the present invention. The monitoring system 1 can be roughly divided into monitoring terminal devices 11-1 to 11-n (n is an arbitrary natural number) (herein, n monitoring terminal devices may be representatively referred to as monitoring terminal devices 11). , Monitoring target devices 12-1 to 12-n (hereinafter, the present invention may refer to n monitoring target devices as the monitoring target device 12), the operation system central management device 20, and the standby system central management A device 21 is provided. These devices are communicably connected by a communication network (communication line) 31. The communication network 31 is, for example, the Internet.

  The operation system central management apparatus 20 is an apparatus capable of centrally managing a failure (which may include an unauthorized operation or the like) generated in the monitoring target apparatus 12. The operation system central management apparatus 20 includes a DB (Database: database) server 200 and four AP (Application: application) servers 201. However, the number of AP servers 201 included in the operation system central management apparatus 20 is not limited to four. The DB server 200 and the AP server 201 may be information processing apparatuses each having a case, or may be an information processing apparatus implemented collectively in one case. Alternatively, the DB server 200 and the AP server 201 may be devices configured as virtual machines.

  The AP server 201 acquires (collects) failure information (alarm data) output from the monitoring target device 12 by executing the application for failure processing. The AP server 201 inputs the acquired fault information to the DB server 200. The DB server 200 stores the fault information input from the AP server 201 in a storage device such as an electronic memory or a magnetic disk that contains the fault information. The DB server 200 manages the status of a failure that has occurred in the monitoring target device 12 by accumulating the failure information using a predetermined database format.

  The standby system central management apparatus 21 is a standby system apparatus that takes over the processing that the operation system central management apparatus 20 is executing when the system 20 is down due to, for example, a disaster or a failure. That is, the monitoring system 1 has a redundant configuration of the operation system central management apparatus 20 and the standby system central management apparatus 21. The standby system central management apparatus 21 has the same configuration as the operation system central management apparatus 20. More specifically, the standby system central management apparatus 21 includes a DB server 210 having the same function as the DB server 200 and four AP servers 211 having the same function as the AP server 201. The operation system central management apparatus 20 and the standby system central management apparatus 21 are installed at geographically separated bases (for example, the Kanto area and the Kansai area) in order to prepare for disasters.

  The operation system central management apparatus 20 and the standby system central management apparatus 21 are communicably connected by a communication network 30 connecting between the bases. The operation system central management apparatus 20 and the standby system central management apparatus 21 communicate with each other through the communication network 30 to check and manage each other's status (such as whether a failure has occurred or not). It performs processing such as synchronizing with respect to information. The operation system central management apparatus 20 and the standby system central management apparatus 21 may perform the above-described communication via the communication network 31 instead of the communication network 30.

  The monitoring terminal device 11-1 monitors the state of the monitoring target device 12-1 present in the monitoring area 10-1 in which the own terminal is present, and displays the monitoring result on, for example, a provided display screen (not shown). The monitoring terminal device 11-1 transmits, to the monitoring target device 12-1, command information for the monitoring target device 12-1 input by the user according to the monitoring result displayed on the display screen.

  The monitoring terminal device 11-n also has the same function as the monitoring terminal device 11-1. That is, the monitoring terminal device 11-n monitors the state of the monitoring target device 12-n existing in the monitoring area 10-n in which the own terminal is present, and the command information for the monitoring target device 12-n input by the user. Is transmitted to the monitoring target device 12-n. Hereinafter, the monitoring areas 10-1 to 10-n may be referred to as the monitoring area 10 in the present application.

  In the monitoring system 1 illustrated in FIG. 1, for convenience of explanation, although there are one monitoring terminal device 11 and one monitoring target device 12 present in the monitoring area 10, the monitoring terminal device 11 and monitoring in the monitoring area 10 A plurality of target devices 12 may be provided.

  The monitoring terminal device 11-1 includes an acquisition unit 110-1, a storage unit 111-1, and a notification unit 112-1. Similarly to the monitoring terminal device 11-1, the monitoring terminal device 11-n also includes an acquiring unit 110-n, a storage unit 111-n, and a notifying unit 112-n. In the present application, hereinafter, the acquisition units 110-1 to 110-n are representatively referred to as an acquisition unit 110, and the storage units 111-1 to 111-n are representatively referred to as a storage unit 111, and the notification units 112-1 to 112-n. The notification unit 112 may be referred to as a representative of n.

  When failure information is output from the monitoring target device 12 present in the monitoring area 10, the acquiring unit 110 on behalf of the AP server 201 in the operation system central management device 20 acquires the failure information. The monitoring target device 12 and the monitoring terminal device 11 both exist in the monitoring area 10 (that is, physically close), so they are logically close to each other in the topology configuring the communication network 31. Therefore, the failure information reaches the monitoring terminal device 11 earlier than the operation system central management device 20 existing at a location farther from the monitoring target device 12. As a result, the monitoring terminal device 11 can acquire the failure information earlier than the operation system central management device 20, so that the acquisition of the failure information by the operation system central management device 20 can be performed as a proxy.

  Alternatively, the acquisition unit 110 may control the monitoring target device 12 so that the transmission destination (address) of the failure information indicates the monitoring terminal device 11. Alternatively, the acquisition unit 110 requests the operation system central management apparatus 20 not to acquire the failure information output from the monitoring target device 12 and also indicates that the output source is the monitoring target device 12. May be acquired. Alternatively, when instructed by the operation system central management apparatus 20 to acquire fault information output from the monitoring target apparatus 12, the acquisition section 110 may acquire the fault information.

  The acquisition unit 110 stores the acquired failure information output from the monitoring target device 12 in the storage unit 111. The storage unit 111 is, for example, a storage device such as an electronic memory or a magnetic disk.

  The notification unit 112 notifies at least a portion of the failure information to the operation system central management apparatus 20 via the communication network 31 by editing the failure information acquired by the acquisition unit 110. More specifically, for example, the notification unit 112 may notify the operation system central management apparatus 20 of any one of a plurality of pieces of failure information having the same content, which relates to failures repeatedly generated in the monitoring target device 12. .

  After acquiring the fault information output from the monitoring target device 12, the monitoring terminal device 11 performs recovery processing on the monitoring target device 12 based on the fault information. For example, after the monitoring terminal device 11 displays the content of the failure information on the display screen, the monitoring terminal device 11 performs a recovery process for the monitoring target device 12 which the user has operated according to the content of the failure information displayed on the display screen. The instruction information to be instructed is transmitted to the monitoring target device 12. Alternatively, the monitoring terminal device 11 may autonomously perform the recovery process on the monitoring target device 12 based on the failure information. However, in this case, it is assumed that the monitoring terminal device 11 stores, in advance, in the storage unit 111, for example, information that associates failure information and command information that instructs recovery processing for the failure.

  In the present embodiment, when a failure occurs in the monitoring target device 12-i existing in the monitoring area 10-i (i is an integer from 1 to n), the monitoring area 10-j (j is 1 to n). The monitoring terminal device 11-j (first monitoring terminal device) existing in any integer except i) may perform recovery processing on the monitoring target device 12-i. In this case, for example, the monitoring terminal device 11-j is notified of the occurrence of a failure from the monitoring terminal device 11-i (second monitoring terminal device) or from the monitoring terminal device 11-i. The above-mentioned recovery processing is performed by being notified by the T.20 that the failure has occurred in the monitoring target device 12-i. In this case, the monitoring terminal device 11-i and the monitoring terminal device 11-j may cooperate with each other to perform recovery processing on the monitoring target device 12-i.

  The operation system central management apparatus 20 according to the present embodiment monitors the operation state of the own apparatus, and when the monitoring result satisfies a predetermined condition, the monitoring terminal apparatuses 11-1 to 11-n monitor the monitoring target. It may be instructed that the fault information output from the devices 12-1 to 12-n be obtained as a proxy. More specifically, the operation system central management apparatus 20 monitors, for example, a storage area of the own apparatus and a use condition of a processor, as an operating condition of the own apparatus. Then, the operation system central management apparatus 20 confirms whether the capacity or the ratio of the area in use in the storage area is equal to or more than the threshold. Alternatively, the operation system central management apparatus 20 confirms whether or not the use state (index representing the load) of the processor is equal to or more than a threshold.

  Next, the operation (process) of the monitoring system 1 according to the present embodiment will be described in detail with reference to the flowchart of FIG.

  Fault information is output from the monitoring target device 12-i present in the monitoring area 10-i (step S101). The acquiring unit 110-i in the monitoring terminal device 11-i present in the monitoring area 10-i substitutes for acquiring the failure information by the operation system central management apparatus 20 (step S102). The acquisition unit 110-i stores the acquired failure information in the storage unit 111-i (step S103).

  The notification unit 112-i in the monitoring terminal device 11-i notifies at least a part of the failure information to the operation system central management apparatus 20 by editing the failure information acquired by the acquisition unit 110-i. (Step S104). The monitoring terminal device 11-i performs recovery processing on the monitoring target device 12-i (step S105). The monitoring terminal device 11-i or the monitoring terminal device 11-j notified of the occurrence of a failure in the monitoring target device 12-i from the monitoring terminal device 11-i or the operation system central management device 20 restores the monitoring target device 12-i. (Step S106), and the whole process ends.

  The monitoring terminal device 11 according to the present embodiment avoids the occurrence of congestion of processing related to failure management in the central management device when the central management device centrally manages failures occurring in a plurality of monitoring target devices. Can. The reason is that the monitoring terminal device 11 substitutes the acquisition of failure information output from the monitoring target device by the central management device, and stores the acquired failure information in its own device.

  Below, the effect implement | achieved by the monitoring terminal device 11 which concerns on this embodiment is demonstrated in detail.

  The information processing system usually has a configuration in which a central management device centrally manages failures that occur in a large number of monitored devices. In such a general information processing system, for example, when failures occur simultaneously or substantially simultaneously in a plurality of monitoring target devices, or when failure information is repeatedly output from a certain monitoring target device, in the central management device, Congestion may occur in the process of managing the failure that has occurred. If a problem occurs in the operation of the central management device due to this congestion, the general information processing system affects the entire system regarding the function of managing the failure, and thus the damage due to the delay in the recovery process and the like increases There is a problem that the possibility of doing

  To address such a problem, the monitoring terminal device 11 according to the present embodiment acquires the operation system central management device 20 that acquires and manages failure information output from a plurality of monitoring target devices 12 using a communication line. It is possible to monitor the state of at least one of the plurality of monitoring target devices 12 through the acquisition unit 110 and the storage unit 111, and operates as described above with reference to FIG. 2, for example. That is, the acquisition unit 110 substitutes the acquisition of the failure information by the operation system central management apparatus 20. The storage unit 111 stores the failure information acquired by the acquisition unit 110. That is, since the monitoring terminal device 11 substitutes the process of managing the failure that has occurred in the monitoring target device 12, which is originally performed by the operation system central management device 20, congestion of the process related to failure management in the operation system central management device 20. Can be avoided, which can prevent the damage from being delayed due to the delay in the recovery process.

  Further, the monitoring terminal device 11 according to the present embodiment substitutes acquisition of fault information output from the monitoring target device 12 present in the monitoring area 10 in which the own device is present. That is, the monitoring terminal device 11 monitors the positional relationship with the own device with respect to the existing location satisfying a predetermined condition (for example, the physical proximity of the existing location causes the logical proximity in the network topology) The fault information output from the target device 12 is a target to be acquired by proxy. Thus, the monitoring system 1 according to the present embodiment appropriately allocates the monitoring terminal device 11 that substitutes the acquisition of failure information by the operation system central management device 20 based on the positional relationship of each device, so that the operation system central management Congestion of processing related to fault management can be reliably avoided in the device 20.

  Further, the monitoring terminal device 11 according to the present embodiment notifies at least a part of the failure information to the operation system central management device 20 by editing the failure information acquired from the monitoring target device 12. For example, in the case where the fault information includes the contents related to the fault which has repeatedly occurred in the monitoring target device 12 (that is, the duplicate contents are included), the monitoring terminal apparatus 11 operates fault information without the overlapping contents. Notify 20 Thus, in the monitoring system 1 according to the present embodiment, the operation system central management apparatus 20 can efficiently manage fault information related to a large number of monitoring target devices 12.

  In addition, when acquiring the fault information output from the monitoring target device 12-i, the monitoring terminal device 11-i according to the present embodiment allocates the resources of the own device to the process of acquiring the fault information, so that the monitoring target device is monitored Fewer resources are allocated to the recovery process for device 12-i. In this case, the monitoring terminal device 11-i or the operation system central management device 20 notifies the monitoring terminal device 11-j that a failure has occurred in the monitoring target device 12-i, thereby the monitoring target device 12. Request to support the recovery process for -i. Then, the monitoring terminal device 11-j that has received the notification supports recovery processing for the monitoring target device 12-i. Thus, the monitoring system 1 according to the present embodiment can quickly recover the monitored device 12 in which a failure has occurred.

  In addition, the operation system central management apparatus 20 according to the present embodiment sends fault information to the monitoring terminal apparatus 11 when the operation status of the own apparatus (for example, storage area, usage status of processor, etc.) satisfies a predetermined condition. It instructs to acquire instead of own device. Then, when instructed by the operation system central management apparatus 20 to acquire the failure information, the monitoring terminal apparatus 11 acquires the failure information. That is, since the operation system central management apparatus 20 controls the monitoring terminal device 11 to substitute the acquisition of failure information based on the operation state of the own apparatus, the monitoring system 1 according to the present embodiment is the operation system central system. It is possible to reliably and efficiently prevent the occurrence of processing congestion related to fault management in the management apparatus 20.

Second Embodiment
FIG. 3 is a block diagram conceptually showing the structure of a monitoring terminal device 41 according to a second embodiment of the present invention. The monitoring terminal device 41 according to the present embodiment acquires the fault information output from the plurality of monitoring target devices 42 using the communication line and manages the plurality of monitoring target devices 42 via the central management device 50. It is a device capable of monitoring at least one of the states. The monitoring terminal device 41 includes an acquisition unit 410 and a storage unit 411.

  The acquisition unit 410 substitutes the acquisition of the failure information by the central management device 50.

  The storage unit 411 stores the fault information acquired by the acquisition unit 410.

  The monitoring terminal device 41 according to the present embodiment avoids the occurrence of congestion of processing related to failure management in the central management device when the central management device centrally manages failures occurring in a plurality of monitoring target devices. Can. The reason is that the monitoring terminal device 41 substitutes the acquisition of failure information output from the monitoring target device by the central management device, and stores the acquired failure information in the own device.

<Hardware configuration example>
In each embodiment described above, each unit in the monitoring terminal device shown in FIG. 1 and FIG. 3 can be realized by a dedicated HW (HardWare) (electronic circuit). Further, in FIG. 1 and FIG. 3, at least the following configuration can be understood as a function (processing) unit (software module) of the software program.
Acquisition units 110 and 410,
Storage control function of the storage units 111 and 411
The notification unit 112
However, the division of each part shown in these drawings is a configuration for convenience of explanation, and various configurations can be assumed at the time of mounting. An example of the hardware environment in this case will be described with reference to FIG.

  FIG. 4 exemplarily illustrates the configuration of an information processing apparatus 900 (computer) capable of executing a monitoring terminal apparatus according to each embodiment of the present invention. That is, FIG. 4 is a configuration of a computer (information processing apparatus) capable of realizing the monitoring terminal apparatus shown in FIG. 1 and FIG. 3, and a hardware environment capable of realizing each function in the embodiment described above Represent.

The information processing apparatus 900 illustrated in FIG. 4 includes the following as constituent elements.
CPU (Central_Processing_Unit) 901,
ROM (Read_Only_Memory) 902,
RAM (Random_Access_Memory) 903,
· Hard disk (storage device) 904,
Communication interface 905 with an external device
Bus 906 (communication line),
A reader / writer 908 capable of reading and writing data stored in a recording medium 907 such as a CD-ROM (Compact_Disc_Read_Only_Memory),
Input / output interface 909.

  That is, the information processing apparatus 900 including the above-described components is a general computer in which these configurations are connected via the bus 906. The information processing apparatus 900 may include a plurality of CPUs 901 or may include a CPU 901 configured by a multi-core.

  The present invention described by taking the above-described embodiment as an example supplies a computer program capable of realizing the following functions to the information processing apparatus 900 shown in FIG. The function is the function of the above-described configuration or the flowchart (FIG. 2) in the block diagram (FIGS. 1 and 3) referred to in the description of the embodiment. The present invention is achieved by reading, interpreting, and executing the computer program on the CPU 901 of the hardware. The computer program supplied into the apparatus may be stored in a readable / writable volatile memory (RAM 903) or a non-volatile storage device such as the ROM 902 or the hard disk 904.

  Also, in the above case, the method of supplying the computer program into the hardware can adopt a general procedure at present. As the procedure, for example, there are a method of installing in the apparatus via various recording media 907 such as a CD-ROM, and a method of downloading from outside via a communication line such as the Internet. Then, in such a case, the present invention can be understood as being configured by a code that configures the computer program or the recording medium 907 in which the code is stored.

  The present invention has been described above by taking the above-described embodiment as an exemplary example. However, the present invention is not limited to the embodiments described above. That is, the present invention can apply various aspects that can be understood by those skilled in the art within the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 monitoring system 10-1 monitoring area 10-n monitoring area 11-1 monitoring terminal device 11-n monitoring terminal device 110-1 acquisition unit 110-n acquisition unit 111-1 storage unit 111-n storage unit 112-1 notification unit 112-n notification unit 20 operation system central management device 200 DB server 201 AP server 21 standby system central management device 210 DB server 211 AP server 30 communication network 31 communication network 41 monitoring terminal device 410 acquisition unit 411 storage unit 42 monitoring target device 50 Central Management Unit 900 Information Processing Unit 901 CPU
902 ROM
903 RAM
904 hard disk (storage device)
905 Communication interface 906 Bus 907 Recording medium 908 Reader writer 909 I / O interface

Claims (10)

A monitoring terminal device capable of monitoring the state of at least one of the plurality of monitoring target devices via a central management device that acquires and manages failure information output from a plurality of monitoring target devices using a communication line. There,
An acquisition unit that substitutes acquisition of the failure information by the central management device;
Storage means for storing the fault information acquired by the acquisition means;
A monitoring terminal device comprising: The acquiring unit acquires the fault information output from a specific monitoring target device among the plurality of monitoring target devices whose positional relationship with the own device satisfies a predetermined condition with respect to the existing location.
The monitoring terminal device according to claim 1. The acquisition means may input information instructing not to acquire the fault information into the central management device, or the information to instruct the output destination of the fault information to be the own device. Substitute for the acquisition of the fault information by
The monitoring terminal device according to claim 1. The information processing apparatus further comprises notification means for notifying the central management device of at least a part of the failure information by editing the failure information acquired by the acquisition device.
The monitoring terminal device according to any one of claims 1 to 3. The notification means notifies the central management device of any one of a plurality of pieces of failure information having the same content, which relates to failures repeatedly generated in the monitoring target device.
The monitoring terminal device according to claim 4. The monitoring terminal device according to any one of claims 1 to 5,
Said central control unit,
Monitoring system with. Having first and second monitoring terminals,
When the second monitoring terminal device acquires the fault information output from the monitoring target device, the first monitoring terminal device may receive the failure information from the second monitoring terminal device or the central management device. Performing a recovery process on the monitored device by being notified that a failure has occurred in the monitored device;
The monitoring system according to claim 6. When the operation state of the central management device satisfies a predetermined condition, the central management device instructs the monitoring terminal device to acquire the failure information.
The monitoring terminal device acquires the failure information when instructed to acquire the failure information from the central management device.
A monitoring system according to claim 6 or 7. A monitoring terminal device capable of monitoring the state of at least one of the plurality of monitoring target devices via a central management device that acquires and manages failure information output from a plurality of monitoring target devices using a communication line ,
Proxying the acquisition of the fault information by the central management device;
Storing the acquired fault information in storage means;
How to monitor. A monitoring terminal device capable of monitoring the state of at least one of the plurality of monitoring target devices via a central management device that acquires and manages failure information output from a plurality of monitoring target devices using a communication line ,
Acquisition processing on behalf of the acquisition of the fault information by the central management device;
Storage processing for storing the failure information acquired by the acquisition processing in storage means;
Supervisory control program to execute.

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