JP2012249115A - Apparatus monitoring system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an apparatus monitoring system capable of improving availability of a system.SOLUTION: Each server comprises: an information collection unit 10 which transmits a transmission request signal A to an apparatus allocated in a layer under that of its own apparatus in a predetermined period, and collects operation state information B from the apparatus allocated in the layer under that of its own apparatus; an operation state information transmission unit 11 which transmits the operation state information B to the information collection unit 10, every time when receiving the transmission request signal A from an apparatus allocated in a layer immediately above that of its own apparatus; and a monitoring request information transmission unit 14 which selects an apparatus having a large excess capability value or a small load factor from apparatuses allocated in the same layer as an apparatus that is a transmission source of the transmission request signal A and apparatuses allocated in the layer immediately under that of the apparatus that is the transmission source of the transmission request signal A, on the basis of resource information included in the operation state information B, and transmits monitoring request information (D1 and D2) for making the selected apparatus transmit the transmission request signal A.

Description

  The present invention relates to a device monitoring system.

  In a device monitoring system configured with a plurality of devices (for example, personal computers and servers) connected to a network such as an IP network, each device has a monitoring function (a function in which the own device monitors the operating status of other devices). From the viewpoint of reducing the load on the central processing unit (hereinafter referred to as “calculation unit”) of each device when this monitoring function is operated, the devices are arranged hierarchically on the network. It is common. For example, a device having a monitoring function arranged in a predetermined layer (n-th layer) monitors a device arranged in a layer (n-1 layer) one level lower than its own device, and distributes it to the n-1 layer. Each installed device having a monitoring function monitors a device arranged in a layer (n-2 layer) one level lower than its own device. However, for example, when an abnormality or the like occurs in a part of the n-1 layer device, it is difficult to monitor the n-2 layer device that is being monitored by the device in which the abnormality has occurred (hereinafter, “first device”). It becomes. An abnormality or the like is, for example, a state in which the device is stopped due to a failure or a state in which there is a high probability that the device is stopped due to a resource shortage.

  In order to solve such a problem, in the prior art disclosed in Patent Document 1 below, the second device is preliminarily installed in order to substitute the monitoring function of the first device with another device (hereinafter, “second device”). It is registered in the n-level device. Therefore, when the device in the nth layer detects an abnormality or the like of the first device, the device arranged in the n-2th layer can be continuously monitored by designating the second device. .

JP 2007-183714 A

  However, in the prior art disclosed in Patent Document 1, since the second device designated when an abnormality or the like occurs is fixed, all the second devices registered in the n-layer devices are also included. When an abnormality or the like has occurred, there is a problem that it is not possible to monitor the devices arranged in the n-2 hierarchy, leading to a decrease in system availability (that the system can be operated continuously).

  The present invention has been made in view of the above, and an object thereof is to obtain a device monitoring system capable of increasing the availability of the system.

  In order to solve the above-described problems and achieve the object, the present invention provides a device monitoring system in which a plurality of devices having a function of monitoring an operation state are arranged hierarchically on a network, Transmits a transmission request signal for requesting transmission of operation state information indicating the operation state of the device to a device arranged in a layer below the own device at a predetermined cycle, and The information collecting unit that collects the operation state information from the device arranged in the device, and the information collecting unit every time the transmission request signal is received from the device arranged in the hierarchy one level higher than the own device An operation state information transmitting unit for transmitting the operation state information to the device, a reception cycle of the transmission request signal transmitted from a device arranged in a layer one higher than the own device, and a resource included in the operation state information Based on the information and the transmission request A device having a large surplus capacity from among a device group arranged in the same hierarchy as the transmission source device of the signal and a device group arranged in the hierarchy one level lower than the transmission source device of the transmission request signal Alternatively, the apparatus includes a request information transmission unit that selects a device having a small load factor and transmits request information that causes the selected device to transmit the transmission request signal.

  According to the present invention, the device arranged in the hierarchy one level lower than the device causing the abnormality or the like detects the abnormality or the like, and requests the surrounding device to change the monitoring source of the own device. As a result, the system availability can be increased.

FIG. 1 is a diagram illustrating a configuration of a device monitoring system according to the first embodiment of the present invention. FIG. 2 is a diagram showing functional blocks in each server shown in FIG. FIG. 3 is a diagram showing details of each functional block shown in FIG. FIG. 4 schematically shows an operation in the case where each server arranged in the n-1 hierarchy creates priority order information based on the operation state information B from each server arranged in the n-2 hierarchy. FIG. FIG. 5 is a flowchart showing the operation of the monitoring request information transmission unit shown in FIG. FIG. 6 is a diagram illustrating the operation of the server when the first monitoring request information is output. FIG. 7 is a diagram illustrating the operation of the server when the second monitoring request information is output. FIG. 8 is a diagram showing functional blocks in each server according to the second embodiment of the present invention. FIG. 9 is a diagram showing functional blocks in each server according to the third embodiment of the present invention.

  Embodiments of a device monitoring system according to the present invention will be described below in detail with reference to the drawings. Note that the present invention is not limited to the embodiments.

Embodiment 1 FIG.
FIG. 1 is a diagram showing a configuration of a device monitoring system 100 according to the first embodiment of the present invention. A device monitoring system 100 illustrated in FIG. 1 includes a plurality of servers n to n24 as an example of a device connected to a network 30 such as an IP network. These servers are, for example, a database server, a WEB server, and a mail server.

  FIG. 1 shows a server n arranged in a predetermined hierarchy (n hierarchy), a server n11 and a server arranged in a hierarchy (n-1 hierarchy) immediately below the n hierarchy and monitored by the server n. n12, a server n21 and a server n22 that are arranged in a hierarchy (n-2 hierarchy) immediately below the n-1 hierarchy and monitored by the server n11, and a server n12 arranged in the n-2 hierarchy The server n23 and the server n24 monitored are shown in FIG. The server n11 and the server n12 arranged in the n-1 hierarchy constitute the server group G1, and the server n21, the server n22, the server n23, and the server n24 arranged in the n-2 hierarchy constitute the server group G2. Constitute. Further, the number of servers arranged in each layer is not limited to the number shown in FIG. 1. For example, one or two or more servers are arranged in the server group G0, and the server group G1 is arranged in the server group G1. You may comprise so that three or more servers may be arrange | positioned.

  Each of the servers n to n24 has a monitoring function (information collecting unit 10 to be described later) for monitoring the operating state of a plurality of servers arranged in a hierarchy below the own server. For example, the server n is a server The operating states of n11 and server n12 are monitored, and server n11 monitors the operating states of server n21 and server n22. As described above, the device monitoring system 100 is configured by hierarchizing the monitoring functions of the servers n to n24 connected to the network 30. With this configuration, the number of servers monitored by one server is reduced, and the processing load on each of the servers n to n24 accompanying monitoring is reduced. However, when an abnormality or the like occurs in a predetermined server (for example, server n11), it becomes difficult to monitor the operation state of the servers (for example, servers n21 and n22) monitored by the server. In the device monitoring system 100 according to the first embodiment, a server disposed in a hierarchy immediately below a server (first server) in which an abnormality or the like has occurred detects an abnormality or the like of the first server. The first monitoring request information D1 for requesting the change of the monitoring source is transmitted to a server (second server) in the server group arranged in the same hierarchy as the first server, or the first server The second monitoring request information D2 for requesting the change of the monitoring source is transmitted to the server (third server) in the server group arranged in the next lower layer.

  FIG. 2 is a diagram showing functional blocks in each of the servers n to n24 shown in FIG. The server n shown in FIG. 2 corresponds to the server n shown in FIG. 1, and the server n11 and the server n12 shown in FIG. 2 correspond to the server n11 and the server n12 shown in FIG. Server n21, server n22, server n23, and server n24 correspond to server n21, server n22, server n23, and server n24 shown in FIG. Each of these servers n to n24 includes an information collecting unit 10, an operation state information transmitting unit 11, an information storing unit 12, and a monitoring request information transmitting unit 14.

  FIG. 3 is a diagram showing details of each functional block shown in FIG. The information collection unit 10 shown in FIG. 3 sends a transmission request signal for requesting transmission of information (operation state information B) indicating the operation state of each server to each server arranged in a layer below the server itself. A is transmitted every predetermined period (for example, once every 59 to 61 seconds), and operation state information B is collected from servers arranged in a hierarchy below the server itself. The operating state information B is information or resource information for notifying a server failure, and the resource information is, for example, the load factor and surplus capacity of a calculation unit (not shown) built in each of the servers n to n24. It is. Further, the operation state information B shown in FIG. 3 includes two pieces of information, that is, first operation state information B1 which is operation state information transmitted from a server arranged in a layer one level lower than the own server, and the own server. The second operation state information B2 that is the operation state information transmitted from the server arranged in the lower hierarchy is represented, and the information collecting unit 10 in each of the servers n to n24 includes the first operation state information B1 and the first operation state information B1. Two pieces of operation state information B2 are collected.

  Further, when the information collection unit 10 receives the first monitoring request information D1, the information collecting unit 10 transmits a transmission request signal A to the server that is the transmission source of the first monitoring request information D1, and the second monitoring request information D1. When D2 is received, a transmission request signal A is transmitted to the server that is the transmission source of the second monitoring request information D2. The servers n to n24 that have received the transmission request signal A are monitored by the servers n to n24 that transmit the transmission request signal A by transmitting the operation state information B to the servers n to n24 that transmit the transmission request signal A. The

  The information storage unit 12 shown in FIG. 3 includes an operation state information storage unit 12a and a priority information storage unit 12b. The operating state information storage unit 12a records the first operating state information B1 and the second operating state information B2 collected by the information collecting unit 10. The priority information C outputted from the priority information creation unit 15b is recorded in the priority information storage unit 12b.

  The priority order information receiving unit 15a shown in FIG. 3 is arranged in the first priority order information C1 transmitted from the server arranged in the hierarchy one level higher than the local server and in the hierarchy two levels higher than the local server. The second priority information C2 transmitted from the installed server is received. The first priority information C1 and the second priority information C2 received by the priority information receiving unit 15a are recorded as priority information C in the priority information storage unit 12b.

  The priority order information transmission unit 15c shown in FIG. 3 reads the priority order information C recorded in the priority order information storage unit 12b, and the read priority order information C is arranged in the hierarchy one level lower than its own server. It is transmitted as the first priority information C1 to the installed server, and is transmitted as the second priority information C2 to the server arranged in the hierarchy two levels lower than its own server.

  The priority order information creating unit 15b shown in FIG. 3 reads the resource information in the first operation state information B1 and the second operation state information B2 recorded in the operation state information storage unit 12a and includes them in this resource information. The following processing is performed using the load factor and surplus capacity.

  For example, the processing speed of the arithmetic unit (A) (not shown) built in the server n12 shown in FIG. 1 is 100 MIPS, and the processing speed of the arithmetic unit (B) (not shown) built in the server n23 is 110 MIPS. It is assumed that the processing speed of the arithmetic unit (C) (not shown) incorporated in n24 is 120 MIPS, and further that the load factor of each of the arithmetic units (A) to (C) is 70%. At this time, the surplus capability of the calculation unit (A) is 30 MIPS, the surplus capability of the calculation unit (B) is 33 MIPS, and the surplus capability of the calculation unit (C) is 36 MIPS. Here, since it is rare that the specifications of the calculation units built in each server are all the same, even if the load factor is the same, a difference occurs in the value of each surplus capacity. When the processing speeds of the hardware (calculation units) of the servers are different from each other, the priority order information creation unit 15b ranks the servers in descending order of the surplus capacity value of the calculation units. In the above example, the priority information creating unit 15b sets the priority of the server n24 with the surplus capacity of 36 MIPS as the first, the priority of the server n23 with the surplus capacity of 33 MIPS as the second, and the server n12 with the surplus capacity of 30 MIPS. The priority is set to No. 3. The priority as a result of ranking is recorded as priority information C in the priority information storage unit 12b.

  The operation state information transmission unit 11 shown in FIG. 3 receives the transmission request signal A from the server arranged in the hierarchy one level higher than its own server, and the operation state recorded in the operation state information storage unit 12a. The information B is read, and the operation status information B is transmitted as the first operation status information B1 to the server arranged in the hierarchy one level higher than the own server, and is distributed to the hierarchy two levels higher than the own server. It is transmitted as second operation state information B2 to the installed server.

  The monitoring request information transmission unit 14 shown in FIG. 3 includes an abnormality monitoring unit 13, a selection unit 18, a monitoring request information generation unit 19, a priority information reception unit 15a, a priority information generation unit 15b, and a priority information transmission unit 15c. It is comprised.

  The abnormality monitoring unit 13 monitors whether the operation state information transmitting unit 11 receives the transmission request signal A every predetermined period (for example, once every 59 to 61 seconds). When the transmission request signal A is not received within the first predetermined period, the abnormality monitoring unit 13 determines that an abnormality or the like has occurred in the transmission source server of the transmission request signal A and outputs an alert.

  Supplementing the first predetermined cycle, for example, when the load factor of the server n11 shown in FIG. 1 is increased and the processing speed is significantly reduced, the server n22 monitored by the server n11 has passed the predetermined cycle. Even so, the transmission request signal A is not transmitted. Therefore, it is necessary to consider the transmission delay time of the transmission request signal A in the first predetermined cycle. For example, when the predetermined cycle is 59 to 61 seconds and the maximum value of the transmission delay time of the transmission request signal A is 5 seconds, the time (64 to 66 seconds) obtained by adding the transmission delay time to the predetermined cycle is the first. It becomes a predetermined cycle. Therefore, if the next transmission request signal A is not received before about 66 seconds have passed since the transmission request signal A was last received, an alert is output from the abnormality monitoring unit 13.

  When the selection unit 18 shown in FIG. 3 receives the alert from the abnormality monitoring unit 13, the selection unit 18 reads the priority order information C recorded in the priority order information storage unit 12b, and the highest priority information C is read out. Select a server with a higher priority.

  When the server selected by the selection unit 18 is the second server, the monitoring request information generation unit 19 generates the first monitoring request information D1. For example, when the first server is the server n11 shown in FIG. 1, the server monitored by the server n11 is the server n22, and the second server is the server n12, the monitoring request information in the server n22 is transmitted. The unit 14 transmits the first monitoring request information D1 generated by the monitoring request information generation unit 19 to the server n12.

  Moreover, the monitoring request information generation part 19 produces | generates the 2nd monitoring request information D2, when the server elected by the selection part 18 is a 3rd server. For example, when the first server is the server n11 shown in FIG. 1, the server monitored by the server n11 is the server n22, and the third server is the server n23, the monitoring request information in the server n22 is transmitted. The unit 14 transmits the second monitoring request information D2 generated by the monitoring request information generation unit 19 to the server n23.

  The hierarchy of the third server that has received the second monitoring request information D2 is virtually changed to the same hierarchy as the first server. In the case of the above example, the hierarchy of the server n23 is changed from the n-2 hierarchy to the n-1 hierarchy. By changing the hierarchy of the third server to the same hierarchy as the first server, it is possible to continue monitoring the server n22 without affecting the hierarchical structure of the monitoring function of each server. In addition, it seems that the monitoring source of the servers monitored by the third server (for example, servers arranged in the n-3 hierarchy not shown) disappears due to the change of the hierarchy of the third server. However, for example, since the server n23 that has received the second monitoring request information D2 is regarded as the first server, the server arranged in the hierarchy one level below this server n23 (the n-3 hierarchy not shown) An alert is output internally. When an alert is output, the first monitoring request information D1 or the second monitoring request information D2 is output from the monitoring request information transmission unit 14 in the server. Since such an operation is sequentially performed by the servers arranged in each of the n-3 and lower layers, the hierarchical structure of the monitoring function of each server is maintained.

  Here, the reason why the first operation state information B1 and the second operation state information B2 are collected by the information collecting unit 10, and the first priority information C1 and the second priority order by the priority information receiving unit 15a. The reason why the information C2 is received will be supplemented.

  FIG. 4 shows a case where the priority information C is created based on the operation state information B from the servers n21 to n24 arranged in the n-2 hierarchy. It is a figure which shows typically operation | movement.

  (1) The operation state information B output from the server n21 and the server n22 shown on the left side of FIG. 4 is transmitted to the server n11, and the server n11 receives the server n21 based on the resource information included in the operation state information B. The server n22 is ranked. The priority order at this time is assumed to be No. 1 and No. 2 in the order of the server n21 and the server n22. (2) The created priority information C is transmitted to the server n21 and the server n22. (3) The operation state information B output from the server n23 and the server n24 shown on the right side of FIG. 4 is transmitted to the server n12. The server n12 ranks the server n23 and the server n24 based on the operation state information B. The priority order at this time is assumed to be No. 1 and No. 2 in the order of the server n23 and the server n24. (4) Then, the created priority order information C is transmitted to the server n23 and the server n24. Here, when viewed from the device monitoring system 100 as a whole, the surplus capacity of the server n23 may be larger than the surplus capacity of the server n21. However, in the operation example shown in FIG. 4, (5) the server n11 and the server n12. Since the operation state information B from the server n is not transmitted to the server n, the server n cannot rank the servers n21 to n24. Even if the operation state information B from the server n11 and the server n12 is transmitted to the server n, (6) when the priority information C as a result of ranking of the servers n11 to n24 is not transmitted to the server n22, the server n22 Then, the server n23 and the server n21 cannot be ranked. Therefore, although the surplus capacity of the server n23 is larger than the surplus capacity of the server n21, the monitoring request information transmitting unit 14 in the server n22 is the server with the highest priority among the priority order information C from the server n11. The server n21 is selected, and the second monitoring request information D2 is transmitted to the server n21.

  In the device monitoring system 100 according to the first embodiment, each of the servers n to n24 includes not only the first operation state information B1 transmitted from the server arranged in the hierarchy one level lower than the own server, but also the own server The second operation state information B2 transmitted from the server arranged at the next lower level is also configured to be receivable. Therefore, in the server n shown in FIG. 4, even when the surplus capacity of the server n23 is larger than the surplus capacity of the server n21, the servers n11 to n24 can be ranked in consideration of these surplus capacity. More specifically, for example, the server n receives the first operation state information B1 transmitted from the server n11 and the server n12, and the second operation state transmitted from the server n21, the server n22, the server n23, and the server n24. Based on the information B2, the servers n11 to n24 are ranked. This priority order is transmitted to the servers n11 and n12 as the priority order information C1, and is transmitted to the servers n21, n22, n23, and server n24 as the priority order information C2. Since such an operation is also performed by the server n11, the server n22 shown in FIG. 4 includes not only the first priority information C1 from the server n11 (priorities of the servers n21 and n22) but also the server n11. The second priority order information C2 (priorities of the server n23 and the server n24) is also transmitted. For example, when an abnormality or the like occurs in the server n11, the server n22 selects a server having the highest priority among the first priority information C1 and the second priority information C2. That is, the server n22 is on the same level as the server n11 (first device) that is the transmission source of the transmission request signal A based on the resource information included in the first operation state information B1 and the second operation state information B2. A server having a large surplus capacity value or a server having a small load factor is selected from the server group G1 and the server group G2 disposed at the next lower level than the first device. Furthermore, the server n22 transmits request information (first monitoring request information D1 or second monitoring request information D2) that causes the selected server to transmit the transmission request signal A.

  FIG. 5 is a flowchart showing the operation of the monitoring request information transmitter 14 shown in FIG. The selection unit 18 waits for an alert from the abnormality monitoring unit 13 (step S1), and determines whether an alert has been received (step S2). When the alert is received (step S2, Yes), the selection unit 18 reads the priority information C recorded in the priority information storage unit 12b, and has the highest priority among the read priority information C. A server is selected (step S3). If no alert is received (step S2, No), the selection unit 18 enters an alert reception standby state.

  Next, when the server selected by the selection unit 18 is the second server (step S4, Yes), the monitoring request information generation unit 19 generates the first monitoring request information D1. Then, the monitoring request information transmission unit 14 transmits the first monitoring request information D1 generated by the monitoring request information generation unit 19 to the second server (step S5). When the server selected by the selection unit 18 is not the second server (step S4, No), that is, when the selected server is the third server, the monitoring request information generation unit 19 uses the second monitoring request information. D2 is generated. Then, the monitoring request information transmission unit 14 transmits the second monitoring request information D2 generated by the monitoring request information generation unit 19 to the third server (Step S6).

  Next, the operation of each server when the first monitoring request information D1 or the second monitoring request information D2 is output will be specifically described with reference to FIGS.

  FIG. 6 is a diagram showing the operation of the server when the first monitoring request information D1 is output. In FIG. 6, the servers n11 and n12 monitored by the server n are arranged in the n-2 hierarchy. The installed server n22 is shown. (1) The server n22 has received the transmission request signal A from the server n11, but (2) the next time from when the transmission request signal A from the server n11 is last received until the first predetermined period elapses. If the transmission request signal A is not received, it is determined that an abnormality or the like has occurred in the server n11, and the first monitoring request information is sent to the server n12 having the highest priority among the priority information C recorded in the server n22. D1 is transmitted. (3) The server n12 that has received the first monitoring request information D1 transmits a transmission request signal A to the server n22 that is the transmission source of the first monitoring request information D1. (4) Since the transmission request signal A from the server n12 is transmitted to the server n22 at a predetermined cycle, the server n22 outputs the operation state information B every time the transmission request signal A is transmitted. The operation state information B is collected by the server n12. As described above, the device monitoring system 100 according to the first embodiment monitors each server even when an abnormality or the like occurs in the server n11 and the server with the highest priority is the server n12 in the same hierarchy as the server n11. It is possible to continue monitoring the server n22 without affecting the function hierarchy.

  FIG. 7 is a diagram illustrating the operation of each server when the second monitoring request information D2 is output. FIG. 7A shows a server n11 and a server n12 monitored by a server n in the nth hierarchy, and a server n22 and a server n23 arranged in the n-2th hierarchy. FIG. 7B shows a state where the server n23 shown in FIG. 7A is changed from the n-2 hierarchy to the n-1 hierarchy. 7A, (1) the server n22 receives the transmission request signal A from the server n11, but (2) the first time since the transmission request signal A from the server n11 is last received. When the next transmission request signal A is not received before the predetermined period elapses, it is determined that an abnormality or the like has occurred in the server n11, and the server n23 having the highest priority among the priority information C recorded in the server n22. The second monitoring request information D2 is transmitted, and the second monitoring request information D2 is also output to the server n. The reason why the second monitoring request information D2 is also transmitted to the server n is that the server n continues to monitor the server n23 (server n23a) after the hierarchy is changed. Next, in FIG. 7B, (3) the hierarchy of the server n23 that has received the second monitoring request information D2 is virtually changed to the hierarchy of the server n11. (4) Since the transmission request signal A from the server n is transmitted at a predetermined cycle to the server n23a whose hierarchy has been changed, (5) the server n23a is in an operating state each time this transmission request signal A is transmitted. The information B is output, and the operation state information B from the server n23a is collected by the information collecting unit 10 in the server n. (6) Further, the server n23a whose hierarchy has been changed transmits a transmission request signal A to the server n22 that is the transmission source of the second monitoring request information D2. (7) Since the transmission request signal A from the server n23a is transmitted to the server n22 at a predetermined cycle, the server n22 outputs the operation state information B every time the transmission request signal A is transmitted. The operation state information B is collected by the server n23a. As described above, in the device monitoring system 100 according to the first embodiment, an abnormality or the like occurs in the server n11, and the server with the highest priority is located in the server group G2 arranged in the hierarchy immediately below the server n11. Even in the case of the server n23, it is possible to continue monitoring the server n22 without affecting the hierarchical structure of the monitoring function of each server.

  In the above description, the ranking in the priority order information creating unit 15b is performed by comparing the values of surplus capacity, but is not limited to this. For example, the hardware capacity of each server is If they are equal, the ranking may be performed by comparing the load factor values of the hardware.

  In the above description, an example in which an alert from the abnormality monitoring unit 13 is input to the selection unit 18 has been described. However, the selection unit 18 directly connects the operation state information transmission unit 11 without using the abnormality monitoring unit 13. It may be configured that the server having the highest priority in the priority information C is selected when monitoring and detecting that the transmission request signal A is not received within the first predetermined period.

  As described above, the device monitoring system 100 according to the first exemplary embodiment of the present invention is configured such that each device (each server n to n24) is arranged in a hierarchy below its own device (server n11) ( A transmission request signal A for requesting transmission of operation state information B indicating the operation state of the device (server n22) is transmitted to the server n22) at a predetermined period, and the hierarchy (n The information collection unit 10 that collects the operation state information B from the devices arranged in the −1 hierarchy and the n−2 hierarchy, and the device (server) arranged in the hierarchy one level higher than the own device (server n22) n11), each time the transmission request signal A is received, the operating state information transmitting unit 11 that transmits the operating state information B to the information collecting unit 10 and the one level higher than the own device (server n22). Request signal A from the device (server n11) Based on the reception cycle and the resource information included in the operation state information B, the device group (server group G1) and the transmission request signal arranged in the same hierarchy as the device (server n11) that is the transmission source of the transmission request signal A A device with a large surplus capacity value or a device with a small load factor is selected from the device group (server group G2) arranged in the hierarchy immediately below the device (server n11) that is the transmission source of A, A request information transmitting unit (monitoring request information transmitting unit 14) for transmitting request information (first monitoring request information D1, second monitoring request information D2) for causing the selected device to transmit the transmission request signal A; Thus, zero current can be detected at high speed, and the recovery time can be increased. The prior art disclosed in Patent Document 1 is configured such that, for example, when an abnormality or the like occurs in the server n11 illustrated in FIG. 1, the server n designates the server n12. The processing load will increase. Further, in this prior art, since the server (for example, n12 shown in FIG. 1) designated when an abnormality or the like occurs in the server n11 is fixed, the server n12 has an abnormality or the like. There is a problem that monitoring of n21 and server n22 cannot be performed, leading to a reduction in system availability. Furthermore, some of the conventional technologies include a standby server for acting as a function of a server in which an abnormality or the like occurs. However, when configured in this manner, there is a problem in that the cost of the system is increased. . In the device monitoring system 100 according to the first embodiment, a server (for example, the server n22) disposed in a hierarchy one level lower than the first server (for example, the server n11 illustrated in FIG. 1) in which an abnormality or the like has occurred. In addition to detecting an abnormality in the server n11, the first monitoring request information D1 is transmitted to the second server (for example, the server n12), or the second monitoring request information D2 is transmitted to the third server (for example, the server n23). Is configured to send. Therefore, the processing load of the server (for example, server n) monitoring the first server does not increase. In addition, since it is not necessary to set the server specified when an abnormality or the like occurs, monitoring can be continued. Also, no standby server is required. Therefore, the device monitoring system 100 according to the first embodiment of the present invention monitors the server without affecting the hierarchical structure of the monitoring function of each server without causing a decrease in system availability or an increase in system cost. It is possible to continue.

  In addition, the monitoring request information transmission unit 14 according to the first embodiment includes the reception cycle of the transmission request signal A from the device (server n11) arranged in the hierarchy one level higher than the own device (server n22), Resource information included in the first operation state information B1 from the device arranged in the layer one level lower than the device, and the second operation state from the device arranged in the layer two levels lower than the own device Based on the resource information included in the information B2, a device group (server group G1) arranged in the same hierarchy as the transmission source device (server n11) of the transmission request signal A and a transmission source device of the transmission request signal A A device with a large surplus value or a device with a small load factor is selected from the device group (server group G2) arranged in the hierarchy immediately below (server n11) and transmitted to the selected device. Request information for transmitting the request signal A (first And a request information transmitting unit (monitoring request information transmitting unit 14) for transmitting the viewing request information D1 and the second monitoring request information D2). The servers n11 to n24 can be ranked in consideration of the surplus capacity of the server and the surplus capacity of the servers arranged in the hierarchy two levels below the own server.

Embodiment 2. FIG.
The device monitoring system 100 according to the first embodiment monitors whether each server receives the transmission request signal A every predetermined cycle (for example, once every 60 seconds), and sends the transmission request signal A at a predetermined cycle. Although not configured to output an alert when not received, the device monitoring system 100 according to the second embodiment is abnormal in a predetermined server at an arbitrary timing regardless of the reception cycle of the transmission request signal A. Or the like is detected. Hereinafter, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only different parts will be described here.

  FIG. 8 is a diagram showing functional blocks in each server according to the second embodiment of the present invention. The servers n to n24 shown in FIG. 8 are configured to include an information collection unit 10, an operation state information transmission unit 11, an information storage unit 12, and a monitoring request information transmission unit 14a. The difference from the servers n to n24 of the first embodiment is that the monitoring request information transmitting unit 14a includes a monitoring confirmation information transmitting unit 16. The monitoring confirmation information transmitting unit 16 monitors monitoring information E for confirming that the server that receives the transmission request signal A (for example, the server n22 is monitored by the server that has transmitted the transmission request signal A (for example, the server n11)). And a response signal F (a signal indicating that the server n11 is monitoring the server n22) does not arrive from the server n11 until the second predetermined period elapses after the monitoring confirmation information E is transmitted. In this case, an alert is output to the selection unit 18. Note that when supplementing the second predetermined cycle, for example, the load factor of the server n11 shown in FIG. In this case, the transmission request signal A is not transmitted to the server n22 monitored by the server n11 even after a predetermined period has elapsed. Period, the maximum value of the transmission delay time of the transmission request signal A (e.g., 5 seconds).

  The operation will be described below. The monitoring confirmation information transmitting unit 16 in the server n22 transmits the monitoring confirmation information E to the information collecting unit 10 in the server n11. The information collection unit 10 in the server n11 that has received the monitoring confirmation information E outputs a response signal F when monitoring the server n22 (when the transmission request signal A is ready to be output at predetermined intervals). To do. The response signal F output from the information collection unit 10 in the server n11 is taken into the monitoring confirmation information transmission unit 16 in the server n22.

  The monitoring confirmation information transmitting unit 16 in the server n22 transmits a response from the server n11 until the second predetermined period elapses after the monitoring confirmation information E is transmitted even though the monitoring confirmation information E is transmitted. If the signal F does not arrive, it is determined that an abnormality or the like has occurred in the server n11 and an alert is output. The alert output from the monitoring confirmation information transmission unit 16 in the server n22 is taken into the selection unit 18. The operations of the abnormality monitoring unit 13, the selection unit 18, the priority order information receiving unit 15a, the priority order information creating unit 15b, and the priority order information transmitting unit 15c are the same as those in the first embodiment, and thus the description thereof will be omitted. To do.

  The device monitoring system 100 according to the first embodiment does not receive the next transmission request signal A until the first predetermined time (for example, 64 to 66 seconds) has elapsed since the transmission request signal A was last received. If configured to output alerts. However, there is a possibility that an abnormality or the like has occurred in the server n11 when, for example, 20 seconds have elapsed since the transmission request signal A was last received. The device monitoring system 100 according to the second embodiment is configured to be able to detect whether an abnormality or the like has occurred in the server n11 at an arbitrary timing. For example, it is assumed that an abnormality or the like has occurred in the server n11 when 20 seconds have elapsed since the transmission request signal A was last received. Further, it is assumed that the monitoring confirmation information E is transmitted when 30 seconds have elapsed since the transmission request signal A was last received. In this case, if the response signal F from the server n11 does not reach the second predetermined time (for example, 5 seconds) after the monitoring confirmation information E is transmitted, an alert from the monitoring confirmation information transmission unit 16 is output. Is done. That is, about 35 seconds after the transmission request signal A is last received, an alert is output from the monitoring confirmation information transmission unit 16.

  As described above, in the device monitoring system 100 according to the second embodiment, the request information transmitting unit (monitoring request information transmitting unit 14a) is configured such that the device (server n22) that receives the transmission request signal A is the transmission request signal A. A monitoring confirmation information transmitting unit 16 that transmits monitoring confirmation information E for confirming that the device is monitored by the transmission source device (server n11), and the information collecting unit 10 is one level lower than the own device (server n11). When the monitoring confirmation information E transmitted from the device (server n22) arranged in the previous hierarchy is received, the device (server n22) arranged in the hierarchy one level lower than the own device (server n11) is monitored. One of the own devices (server n22) until the second predetermined time elapses after the monitoring request information transmission unit 14a transmits the monitoring confirmation information E. Up Since the transmission request signal A is transmitted when the response signal F from the installed device (server n11) does not arrive, the first monitoring request information is earlier than the device monitoring system 100 according to the first embodiment. It is also possible to output D1 or second monitoring request information D2. Therefore, for example, even when the server n11 is stopped due to a failure or the like, monitoring of the server (for example, the server n22) monitored by the server n11 can be resumed in a short time after the server n11 stops. As a result, it is possible to prevent an unexpected stop of the device monitoring system 100 and further increase the availability of the system.

Embodiment 3 FIG.
The device monitoring system 100 according to the first embodiment monitors whether each server receives the transmission request signal A every predetermined cycle (for example, once every 60 seconds), and sends the transmission request signal A at a predetermined cycle. When not received, the device monitoring system 100 according to the third embodiment is configured to output an alert. However, the device monitoring system 100 according to the third embodiment has a surplus capability of a server (hereinafter, “non-monitoring server”) arranged in a predetermined hierarchy. Is configured to stop the output of the transmission request signal A to the non-monitoring server when the non-monitoring server is monitored (hereinafter referred to as “monitoring server”). Hereinafter, the same parts as those of the first embodiment are denoted by the same reference numerals, and the description thereof is omitted. Only different parts will be described here.

  FIG. 9 is a diagram showing functional blocks in each server according to the third embodiment of the present invention. The servers n to n24 shown in FIG. 9 include an information collecting unit 10, an operation state information transmitting unit 11, an information storage unit 12, a monitoring request information transmitting unit 14, and a stop instruction unit 17. The difference from the servers n to n24 of the first embodiment is that a stop instruction unit 17 is provided. The stop instruction unit 17 reads the surplus capability of the non-monitoring server from the operation state information recorded in the operation state information storage unit 12a, and when the surplus capability becomes equal to or less than a predetermined value, the stop instruction unit 17 transmits the transmission request signal A. A stop instruction signal G for instructing stop is output to the non-monitoring server.

  The operation will be described below. For example, the stop instruction unit 17 in the server n reads the surplus capacity of the non-monitoring server (for example, the server n11) from the operation state information recorded in the operation state information storage unit 12a, and the surplus capacity is determined to be a predetermined value (for example, 30 MIPS), the stop instruction signal G is output to the server n11. When receiving the stop instruction signal G, the information collecting unit 10 in the server n11 stops the output of the transmission request signal A scheduled to be transmitted next. In addition, since operation | movement of the operation state information transmission part 11, the information storage part 12, and the monitoring request information transmission part 14 is the same as that of the equipment monitoring system 100 concerning Embodiment 1, description is abbreviate | omitted below.

  The device monitoring system 100 according to the first embodiment will be described in comparison with the following. In the device monitoring system 100 according to the first embodiment, the next transmission request signal A is not received before the first predetermined time has elapsed since the transmission request signal A was last received by the operation state information transmission unit 11. If configured to output alerts. However, in the device monitoring system 100 according to the first embodiment, for example, even when the surplus capacity of the server n11 is reduced to a value (for example, 20 MIPS) lower than the predetermined value described above, the monitoring of the server n22 is continued. (The output of the transmission request signal A is output every predetermined period). Therefore, the load factor of the server n11 remains a high value. When the surplus capacity of the server n11 monitoring the server n22 becomes 30 MIPS or less, the device monitoring system 100 according to the third embodiment causes the other server to monitor the server n22 that is the monitoring target of the server n11. It is configured. More specifically, since the server n11 that has received the stop instruction signal G from the server n stops the transmission of the transmission request signal A, the server n22 monitored by the server n11 receives the transmission request signal A every predetermined cycle. Is not transmitted, and the first monitoring request information D1 or the second monitoring request information D2 is output. Therefore, the server n22 is monitored by the server n12 that has received the first monitoring request information D1 as described in FIG. 6, or the second monitoring request information D2 as described in FIG. 7B. Monitored by the received server n23a. In other words, the server n22 is monitored by a server having a surplus capacity. As a result, the number of servers monitored by the server n11 decreases, and the processing load on the server n11 associated with the monitoring is reduced. Furthermore, a server with surplus capacity can be used effectively, and the load on each server in the device monitoring system 100 is leveled.

  Note that the stop instruction unit 17 according to the third embodiment can be incorporated in the device monitoring system 100 according to the second embodiment. When configured in this way, the first monitoring request information D1 or the second monitoring request information D2 can be output earlier than the device monitoring system 100 according to the first embodiment, and the load on each server is leveled. It is also possible to do.

  As described above, in the device monitoring system 100 according to the third embodiment, each device (each server n to n24) is a device (server) arranged in a hierarchy one level lower than its own device (server n). When the surplus capacity of n11) is equal to or less than a predetermined value, the device (server n11) is provided with a stop instruction unit 17 that outputs a stop instruction signal G instructing to stop transmission of the transmission request signal A, and collects information When the unit 10 receives a stop instruction signal G from a device (server n) arranged in a layer one level higher than the own device (server n11), the unit 10 stops the transmission request signal A scheduled to be transmitted next. Since it did in this way, before the server n11 stops completely, for example, it is possible to make the server n11 monitor the server n11. As a result, the load on each server can be leveled and the system availability can be further increased.

  The device monitoring system 100 according to the third embodiment may be configured as follows. For example, when the information collection unit 10 illustrated in FIG. 9 receives a stop instruction signal G from a device (server n) arranged in a hierarchy one level higher than the own device (server n11), the information collecting unit 10 ) Outputs a signal for forcibly transmitting request information (first monitoring request information D1, second monitoring request information D2) to a device (server n22) arranged in the hierarchy one level below. The request information transmission unit (monitoring request information transmission unit 14) has received a signal for forcibly transmitting the request information from a device (server n11) arranged in a hierarchy one level higher than the own device (server n22). The request information (the first monitoring request information D1 and the second monitoring request information D2) may be transmitted. The effect of such a configuration will be described. The server n11 that has received the stop instruction signal G from the server n stops the transmission request signal A that is scheduled to be transmitted next. The transmission request signal A is transmitted about 60 seconds after the previous transmission. Therefore, when the timing at which the server n11 receives the stop instruction signal G is immediately after the transmission request signal A is transmitted last time, the server n22 that has been monitored by the server n11 will transmit the next transmission request signal. There may be a time lag of about several tens of seconds before detecting that A has stopped. Therefore, when the server n11 receives the stop instruction signal G from the server n, a signal for forcibly transmitting request information (first monitoring request information D1 and second monitoring request information D2) to the server n22. If the server n22 that outputs and receives this signal is configured to transmit the request information, the time lag described above can be suppressed. As a result, it is possible to reduce the processing load on the server n11 associated with monitoring more quickly.

  Note that the device monitoring system 100 according to the first to third embodiments shows an example of the content of the present invention, and can be combined with another known technique, and departs from the gist of the present invention. Of course, it is possible to change and configure such as omitting a part within the range.

  As described above, the present invention can be applied to an air conditioner, and in particular, in the case where an air conditioner with a matching unit setting coincides with an air conditioner with a unit number setting that does not match, a notification of a difference in unit setting is made. This is useful as an invention that can release the user from annoyance.

n, n11, n12, n21, n22, n23, n23a, n24, n24a Server (device)
DESCRIPTION OF SYMBOLS 10 Information collection part 11 Operation state information transmission part 12 Information storage part 12a Operation state information storage part 12b Priority information storage part 13 Abnormality monitoring part 14, 14a Monitoring request information transmission part (request information transmission part)
15a priority information receiving unit 15b priority information creating unit 15c priority information transmitting unit 16 monitoring confirmation information transmitting unit 17 stop instructing unit 18 selecting unit 19 monitoring request information generating unit
30 network 100 device monitoring system A transmission request signal B operation state information B1 first operation state information B2 second operation state information C priority information C1 first priority information C2 second priority information D1 first Monitoring request information D2 Second monitoring request information E Monitoring confirmation information F Response signal G Stop instruction signal G0, G1, G2 Server group

Claims (5)

A device monitoring system in which a plurality of devices having a function of monitoring an operation state are arranged hierarchically on a network,
Each device is
A transmission request signal for requesting transmission of operation state information indicating the operation state of the device is transmitted to a device arranged in a lower layer of the own device at a predetermined cycle and distributed to the lower layer of the own device. An information collection unit for collecting the operation state information from the installed device;
An operation state information transmitting unit that transmits the operation state information to the information collecting unit each time the transmission request signal is received from a device arranged in a hierarchy one higher than the own device;
Based on the reception cycle of the transmission request signal transmitted from a device arranged in a hierarchy one level higher than the own device, and the resource information included in the operation state information, the transmission source device of the transmission request signal A device with a large surplus capacity value or a device with a small load factor, from among a device group arranged in the same hierarchy as the device group and a device group arranged in a hierarchy one level lower than the transmission source device of the transmission request signal A request information transmitting unit that transmits request information for causing the selected device to transmit the transmission request signal, and
A device monitoring system comprising: A device monitoring system in which a plurality of devices having a function of monitoring an operation state are arranged hierarchically on a network,
Each device is
A transmission request signal for requesting transmission of operation state information indicating the operation state of the device is transmitted to a device arranged in a lower layer of the own device at a predetermined cycle and distributed to the lower layer of the own device. An information collection unit for collecting the operation state information from the installed device;
An operation state information transmitting unit that transmits the operation state information to the information collecting unit each time the transmission request signal is received from a device arranged in a hierarchy one higher than the own device;
Included in the reception cycle of the transmission request signal transmitted from the device arranged in the hierarchy one level higher than the own device and the operation state information from the device arranged in the hierarchy one level lower than the own device Based on the resource information and the resource information included in the operation state information from the device arranged in the hierarchy two levels lower than the own device, it is arranged in the same layer as the transmission source device of the transmission request signal. A device having a large surplus capacity value or a device having a low load factor is selected from the device group arranged in the hierarchy one level lower than the device group and the transmission source signal transmission device. A request information transmitting unit for transmitting request information for causing the device to transmit the transmission request signal;
A device monitoring system comprising: The request information transmitter is
A device that receives the transmission request signal includes a monitoring confirmation information transmission unit that transmits monitoring confirmation information for confirming that the device that is the transmission source of the transmission request signal is monitored,
The information collecting unit
When the monitoring confirmation information transmitted from the device arranged in the layer one level lower than the own device is received, the response indicating that the device arranged in the layer one level lower than the own device is monitored Output the signal,
The monitoring request information transmitting unit
If the response signal from the device arranged in the hierarchy one level higher than the own device does not reach the second predetermined time after the monitoring confirmation information is transmitted, the request information is transmitted. The device monitoring system according to claim 1, wherein the device monitoring system is performed. Each device is
Stop instruction to output a stop instruction signal for instructing to stop transmission of the transmission request signal to the apparatus when the surplus capacity of the apparatus arranged in the hierarchy one level lower than the own apparatus becomes a predetermined value or less Part
The information collecting unit
4. The transmission request signal scheduled to be transmitted next is stopped when the stop instruction signal is received from a device arranged at a level above the own device. The apparatus monitoring system as described in any one. The information collecting unit
When the stop instruction signal is received from a device arranged in a hierarchy one level higher than the own device, the request information is forcibly transmitted to a device arranged in a hierarchy one level lower than the own device. Output a signal to
The request information transmitter is
5. The device monitoring system according to claim 4, wherein the request information is transmitted when a signal for forcibly transmitting the request information is received from a device arranged in a hierarchy one level higher than the own device. .

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