WO2017221288A1 - Management calculator and management method - Google Patents

Management calculator and management method Download PDF

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Publication number
WO2017221288A1
WO2017221288A1 PCT/JP2016/068200 JP2016068200W WO2017221288A1 WO 2017221288 A1 WO2017221288 A1 WO 2017221288A1 JP 2016068200 W JP2016068200 W JP 2016068200W WO 2017221288 A1 WO2017221288 A1 WO 2017221288A1
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WIPO (PCT)
Prior art keywords
configuration information
nodes
node
polling
pieces
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PCT/JP2016/068200
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French (fr)
Japanese (ja)
Inventor
皓仁 森川
田中　裕士
田村　清朗
将一 高木
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株式会社日立製作所
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Priority to PCT/JP2016/068200 priority Critical patent/WO2017221288A1/en
Priority to JP2018523164A priority patent/JP6535817B2/en
Publication of WO2017221288A1 publication Critical patent/WO2017221288A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/403—Bus networks with centralised control, e.g. polling

Definitions

  • the present invention relates to a management computer.
  • the configuration management apparatus that manages the configuration of the network device periodically acquires (hereinafter referred to as polling) configuration information of the network device (hereinafter referred to as a node) to be managed.
  • polling configuration information of the network device
  • a load is applied to the configuration management device, the node, and the network between the configuration management device and the node. Therefore, it is necessary to reduce this load as much as possible.
  • the configuration management apparatus polls a large number of nodes at the same time, the load due to polling is concentrated. Therefore, it is common to distribute polling and distribute the load due to polling.
  • Patent Document 1 suppresses health check traffic by checking health of only one node in the sub-network and not checking other nodes if the health check is normal. The next time the same subnetwork is checked, the order of the nodes checked this time is the last.
  • Each node stores configuration information indicating whether its own node is connected to other nodes.
  • the configuration management apparatus acquires the configuration information of each node, matches the configuration information, and analyzes the connection relationship between the nodes.
  • the configuration management device has not only a connection relationship from one node to the other node but also a connection relationship in the opposite direction at two (or more) nodes. It is determined that there is a connection relationship.
  • the configuration management apparatus first polls the node A and knows that “the node A has a connection relationship with the node B”. After that, when the connection relationship between the node A and the node B disappears, when the polling to the node B is performed at an interval, “the node A has the connection relationship with the node B” is reversed. Since the node B does not have a connection relationship with the node A, the connection relationship stored in the node A and the connection relationship stored in the node B are inconsistent. At this time, the configuration management apparatus re-polls two nodes (may include other nodes as well) and tries to acquire a correct connection relationship. However, there is a problem that a load is applied because re-polling is performed each time a connection inconsistency occurs.
  • a management computer includes a memory and a processor connected to the memory and connected to a plurality of nodes in the network.
  • the processor is configured to repeat the acquisition process.
  • the acquisition process determines a scheduled polling time for each node under a scheduled time condition, and performs polling according to the scheduled time, thereby acquiring a plurality of configuration information respectively stored in the plurality of nodes, By storing the plurality of pieces of configuration information in the memory and polling two or more nodes corresponding to the two or more pieces of configuration information when two or more pieces of the pieces of configuration information are inconsistent with each other, , Acquiring two or more new configuration information from the two or more nodes, respectively, and storing the two or more new configuration information in the memory.
  • the scheduled time condition is that a time difference between scheduled times of two nodes connected to each other is not more than a preset time difference threshold.
  • the configuration of the computer system is shown.
  • 2 shows a configuration of the configuration management apparatus 100.
  • 2 shows a configuration of a managed apparatus 300.
  • a configuration information table 131 is shown. Indicates the connection relationship between nodes.
  • a polling order table 132 is shown.
  • a managed node table 133 is shown.
  • a configuration management process is shown.
  • a 1st polling process is shown. Grouping processing is shown.
  • the polling order determination process is shown.
  • the search recursion process is shown.
  • a 2nd polling process is shown.
  • a configuration information acquisition process is shown. Connection information inconsistency determination processing is shown.
  • xxx table information may be described using the expression “xxx table”, but the information may be expressed in any data structure. That is, “xxx table” can be referred to as “xxx information” to indicate that the information does not depend on the data structure.
  • xxx information information may be described using the expression “xxx table”, but the information may be expressed in any data structure. That is, “xxx table” can be referred to as “xxx information” to indicate that the information does not depend on the data structure.
  • the configuration of each table is an example, and one table may be divided into two or more tables, or all or part of the two or more tables may be a single table. Good.
  • an ID is used as element identification information, but other types of identification information may be used instead of or in addition thereto.
  • a reference number or a common number in the reference number is used, and when a description is made by distinguishing the same type of element, the reference number of the element is used.
  • an ID assigned to the element may be used instead of the reference code.
  • an I / O (Input / Output) request is a write request or a read request, and may be referred to as an access request.
  • the process may be described using “program” as a subject.
  • the program is executed by a processor (for example, a CPU (Central Processing Unit)), so that a predetermined processing is appropriately performed. Since processing is performed using a storage resource (for example, a memory) and / or an interface device (for example, a communication port), the subject of processing may be a processor.
  • the process described with the program as the subject may be a process or system performed by a processor or an apparatus having the processor.
  • the processor may include a hardware circuit that performs a part or all of the processing.
  • the program may be installed in a computer-like device from a program source.
  • the program source may be, for example, a storage medium that can be read by a program distribution server or a computer.
  • the program distribution server may include a processor (for example, a CPU) and a storage resource, and the storage resource may further store a distribution program and a program to be distributed. Then, the processor of the program distribution server executes the distribution program, so that the processor of the program distribution server may distribute the distribution target program to other computers.
  • a processor for example, a CPU
  • the storage resource may further store a distribution program and a program to be distributed. Then, the processor of the program distribution server executes the distribution program, so that the processor of the program distribution server may distribute the distribution target program to other computers.
  • two or more programs may be realized as one program, or one program may be realized as two or more programs.
  • the management system may include one or more computers.
  • the management computer displays information (specifically, for example, the management computer displays information on its own display device, or the management computer displays display information in a remote display computer)
  • Management computer is the management system.
  • the plurality of computers may include a display computer when the display computer performs display
  • the management computer (eg, management system) may include an interface device connected to the I / O system including the display system, a storage resource (eg, memory), and a processor connected to the interface device and the storage resource.
  • the display system may be a display device included in the management computer or a display computer connected to the management computer.
  • the I / O system may be an I / O device (for example, a keyboard and a pointing device or a touch panel) included in the management computer, a display computer connected to the management computer, or another computer.
  • “Displaying display information” by the management computer means displaying the display information on the display system, which may be displaying the display information on a display device included in the management computer.
  • the management computer may transmit display information to the display computer (in the latter case, the display information is displayed by the display computer).
  • the management computer inputting / outputting information may be inputting / outputting information to / from an I / O device of the management computer, or a remote computer connected to the management computer (for example, a display) Information may be input / output to / from the computer.
  • the information output may be a display of information.
  • Fig. 1 shows the configuration of the computer system.
  • the computer system includes a configuration management device 100 and a managed device group 200.
  • the configuration management device 100 is connected to the managed device group 200 via a network.
  • the managed device group 200 includes a plurality of managed devices 300. Each managed device 300 is connected to at least one other managed device 300 via a network.
  • the configuration management device 100 is connected to all the managed devices 300 via the network and the managed device 300. Each managed device 300 may be referred to as a node.
  • the managed device 300 is a network device such as a router or a switch. Further, the managed device 300 may be a server device or a storage device.
  • FIG. 2 shows the configuration of the configuration management apparatus 100.
  • the configuration management device 100 includes a processor 110, a main storage device 120, an auxiliary storage device 130, and a network interface 140.
  • the main storage device 120 mainly stores programs.
  • the auxiliary storage device 130 mainly stores data.
  • the processor 110 executes processing using programs and data stored in the main storage device 120 and the auxiliary storage device 130.
  • the network interface 140 is connected to the network and communicates with the managed device 300.
  • the main storage device 120 stores a configuration management processing unit 121, a configuration information acquisition unit 122, a connection information inconsistency determination unit 123, a grouping unit 124, and a polling order table creation unit 125 as programs.
  • the auxiliary storage device 130 stores a configuration information table 131, a polling order table 132, and a managed node table 133 as data.
  • the configuration management apparatus 100 may include an input device and a display device, or may be connected to the input device and the display device.
  • FIG. 3 shows the configuration of the managed device 300.
  • the managed device 300 includes a processor 310, a main storage device 320, an auxiliary storage device 330, and a network interface 340.
  • the main storage device 320 mainly stores programs.
  • the auxiliary storage device 330 mainly stores data.
  • the processor 310 executes processing using programs and data stored in the main storage device 320 and the auxiliary storage device 330.
  • the network interface 340 is connected to the network and communicates with other managed devices 300 and the configuration management device 100.
  • the main storage device 320 stores the configuration information response unit 321 as a program.
  • the auxiliary storage device 330 stores a managed device configuration information table 331 as data.
  • FIG. 4 shows the configuration information table 131.
  • the configuration information table 131 stores configuration information acquired from each node by polling.
  • the configuration information table 131 has an entry for each configuration information.
  • One configuration information entry includes a configuration information ID 411, a node ID 412, an IP address 413, a subnet 414, an adjacent node IP address 415, and a connection protocol 416.
  • Configuration information ID 411 is an identifier of configuration information.
  • the node ID 412 is an identifier of the transmission source node of the configuration information.
  • the IP address 413 is the IP address of the transmission source node.
  • the subnet 414 is a network address of a subnet to which the transmission source node belongs.
  • the adjacent node IP address 415 is an IP address of an adjacent node that is another node directly connected to the transmission source node.
  • the connection protocol 460 indicates a connection protocol used for communication between the transmission source node and the adjacent node.
  • Fig. 5 shows the connection relationship between nodes.
  • This figure shows the connection relationship between nodes shown in the example of the configuration information table 131 described above.
  • the connection relationship between the nodes N001 and N002 is shown in the configuration information whose configuration information IDs are 1 and 3.
  • the connection relationship between the nodes N002 and N004 is shown in the configuration information whose configuration information IDs are 5 and 6.
  • the connection relationship between the nodes N002 and N005 is shown in the configuration information whose configuration information IDs are 7 and 8.
  • the connection relationship between the nodes N004 and N005 is shown in the configuration information whose configuration information IDs are 9 and 10.
  • the connection relationship between the nodes N001 and N003 is shown in the configuration information whose configuration information IDs are 2 and 4.
  • Nodes N001, N002, N004, and N005 belong to the subnet 192.168.1.0/24.
  • the nodes N001 and N002 are connected to each other using HSRP (Hot Standby Standby Router Protocol) as the connection protocol, and the nodes N001, N004, and N005 use STP (Spanning Tree Protocol) as the connection protocol.
  • HSRP Hot Standby Standby Router Protocol
  • STP Segning Tree Protocol
  • Nodes N001 and N003 belong to the subnet 192.168.2.0/24. Nodes N001 and N003 are connected to each other using LAG (Link Aggregation Group) as a connection protocol.
  • LAG Link Aggregation Group
  • FIG. 6 shows the polling order table 132.
  • the polling order table 132 shows a polling plan.
  • the polling order table 132 has an entry for each polling.
  • One polling entry includes an order ID 421, a time 422, and a node ID 423.
  • the order ID 421 indicates a polling order that is the order of the polling.
  • a time 422 indicates a polling time (scheduled time) that is a time for executing the polling.
  • the node ID 423 is an identifier of a node as an inquiry destination in the polling.
  • FIG. 7 shows the managed node table 133.
  • the managed node table 133 shows a list of nodes set by the administrator and managed by the configuration management apparatus 100.
  • the managed node table 133 has an entry for each node.
  • the entry of one node includes a management number (No.) 431 and a managed node IP address 432.
  • Management number 431 is a node number.
  • the managed node IP address 432 is the IP address of the node.
  • the configuration management processing unit 121 of the configuration management apparatus 100 performs configuration management processing.
  • FIG. 8 shows the configuration management process
  • the configuration management processing unit 121 receives an input from the user to the managed node table 133.
  • the configuration management processing unit 121 displays an input form on the display device, acquires an IP address based on an input to the input device, and stores the acquired IP address in the managed node table 133.
  • the configuration management processing unit 121 performs a first polling process (initial acquisition process) described later.
  • the configuration management processing unit 121 repeats the processing (acquisition processing) of S140 and S130 to S160 until the configuration management processing is stopped.
  • the configuration management processing unit 121 performs a grouping process described later.
  • the configuration management processing unit 121 performs a second polling process described later.
  • the configuration management processing unit 121 shifts the process to S130.
  • the configuration management apparatus 100 can determine the polling order of each node after the initial polling process and perform the polling process according to the polling order.
  • FIG. 9 shows the first polling process.
  • the configuration information acquisition unit 122 acquires the managed node table 133 from the auxiliary storage device 130.
  • the configuration information acquisition unit 122 repeats the processing of S220 to S260 by the number of nodes in the managed node table 133. For example, the configuration information acquisition unit 122 performs the processing of S220 to S260 at every preset polling time interval.
  • the configuration information acquisition unit 122 selects one unselected node as a target node from the managed node table 133.
  • the configuration information acquisition unit 122 acquires configuration information from the target node by polling the target node.
  • the configuration information acquisition unit 122 stores the acquired configuration information in the configuration information table 131.
  • the configuration information acquisition unit 122 shifts the process to S220.
  • the configuration management apparatus 100 can perform polling for all the nodes indicated in the managed node table 133.
  • FIG. 10 shows the grouping process
  • the grouping unit 124 deletes the contents of the polling order table 132.
  • the grouping unit 124 acquires all node IDs from the configuration information table 131, and repeats the processes of S320 to S340 while incrementing the process number from 1 to the number of node IDs.
  • the grouping unit 124 sets the process number to the order 421 of the process number entries in the polling order table 132.
  • the grouping unit 124 sets a preset start time to the time 422 of the entry.
  • the grouping unit 124 determines a new polling time by adding the polling time interval to the time 422 of the previous entry, and sets the polling time to the time 422 of the entry.
  • the grouping unit 124 shifts the process to S320.
  • the grouping unit 124 divides the node ID 412 in the configuration information table 131 into subnet groups for each value of the subnet 414.
  • the grouping unit 124 repeats the processing of S360 to S420 while incrementing the subnet group number from 1 to the number of subnet groups.
  • the grouping unit 124 divides the node IDs in the subnet group of the subnet group number into connection groups for each value of the connection protocol 416.
  • the grouping unit 124 repeats the processes of S380 to S410 while incrementing the connection group number from 1 to the number of connection groups.
  • the grouping unit 124 randomly selects one node as the root node from the connection group having the connection group number.
  • the grouping unit 124 performs a polling order determination process described later.
  • the grouping unit 124 shifts the process to S380.
  • the grouping unit 124 shifts the process to S260.
  • the configuration management apparatus 100 can divide the nodes into connection groups based on subnets and connection protocols, and determine the polling order for each connection group.
  • FIG. 11 shows a polling order determination process.
  • the polling order table creation unit 125 selects the next order in the polling order table 132 as the target polling order, and registers the root node in the entry of the target polling order.
  • the polling order table creation unit 125 records that the root node has been searched.
  • the polling order table creation unit 125 performs a search recursion process described later using the node ID of the root node as an argument.
  • the configuration management apparatus 100 can determine the polling order in order from the root node.
  • FIG. 12 shows search recursion processing
  • the node indicated in the argument of the search recursion process is called the parent node.
  • the polling order table creation unit 125 detects the node indicated by the adjacent node IP address 415 of the entry of the parent node from the configuration information table 131 as a child node, and performs S610 to S690 for all the child nodes. Repeat the process.
  • the polling order table creation unit 125 selects one child node as a target node from the detected child nodes.
  • the polling order table creation unit 125 determines whether the target node has been searched. When it is determined that the target node has been searched (S630: YES), the polling order table creation unit 125 shifts the process to S620. When it is determined that the target node has not been searched (S630: NO), the polling order table creation unit 125 shifts the process to S640.
  • the polling order table creation unit 125 records that the target node has been searched.
  • the polling order table creation unit 125 selects the next polling order in the polling order table 132 as the target polling order, and registers the target node in the entry of the target polling order.
  • the polling order table creation unit 125 determines whether or not the minimum value of the time difference between the polling time of the parent node and the polling time of the target node in the polling order table 132 is equal to or less than a preset time difference threshold value. .
  • the polling order table 132 when there are a plurality of polling times for the parent node, the time difference between the polling time of the parent node closest to the polling time of the target node and the polling time of the target node is the minimum value of the time difference.
  • the polling order table creation unit 125 registers the parent node in the entry of the target polling order in the polling order table 132, and targets the next polling order. Select as the polling order and register the target node in the target polling order entry.
  • the polling order table creation unit 125 When it is determined that the time difference is equal to or smaller than the time difference threshold (S660: YES), in S680, the polling order table creation unit 125 performs search recursion processing using the node ID of the target node as an argument.
  • the polling order table creation unit 125 shifts the process to S610.
  • the polling time of each node can be determined so that the time difference between the polling times of two adjacent nodes is equal to or less than the time difference threshold.
  • a polling order table creation unit 125 sets the polling order of N001 again immediately before N003, and the polling order becomes N001, N002, N004, N005, N001, and N003. Thereby, all the polling times can satisfy the scheduled time condition that the time difference between the polling times of two adjacent nodes is equal to or less than the time difference threshold.
  • the polling order table creation unit 125 may preferentially search for nodes having a strong connection relationship based on the connection protocol. Further, the search order may be determined based on the connection relationship between the nodes.
  • the polling time interval may be determined based on the total number of nodes and the polling processing time that is the processing time of the second polling processing. For example, the polling time interval may be determined such that polling of all nodes ends within the polling processing time. Thereby, it is possible to set a polling time interval that suppresses the load as much as possible.
  • the time difference threshold value may be represented by an order difference threshold value that is a threshold value of a difference in polling order. For example, in the polling order table 132, the polling order table creation unit 125 determines the polling order so that the difference in polling order between two adjacent nodes is equal to or less than a preset order difference threshold.
  • FIG. 13 shows the second polling process.
  • the configuration information acquisition unit 122 performs the processing of S710 to S750 for each entry in the polling order table 132.
  • the configuration information acquisition unit 122 selects one entry in order from the polling order table 132, and selects the node of the entry as a target node.
  • the configuration information acquisition unit 122 performs configuration information acquisition processing on the target node.
  • the configuration information acquisition unit 122 waits until the polling time of the next entry.
  • the configuration information acquisition unit 122 shifts the process to S710.
  • the configuration management apparatus 100 can poll all nodes in the order shown in the polling order table 132.
  • FIG. 14 shows the configuration information acquisition process.
  • the configuration information acquisition unit 122 acquires configuration information from the target node by polling the target node.
  • the configuration information acquisition unit 122 updates the configuration information table 131 by storing the acquired configuration information in the configuration information table 131.
  • the configuration information acquisition unit 122 deletes the corresponding entry from the configuration information table 131.
  • the configuration information acquisition unit 122 replaces the content of the corresponding entry in the configuration information table 131 with the acquired configuration information.
  • the configuration information acquisition unit 122 performs connection information inconsistency determination processing described later.
  • the configuration management apparatus 100 can acquire configuration information from each node indicated by the polling order, and determine configuration information inconsistencies.
  • FIG. 15 shows connection information inconsistency determination processing.
  • connection information inconsistency determination unit 123 selects the adjacent node IP address of the target node from the configuration information table 131 as the target adjacent node IP address.
  • connection information inconsistency determination unit 123 selects one node as the connection destination node IP address from the target adjacent node IP addresses, and repeats the processing of S920 to S970 for the connection destination node IP address.
  • connection information inconsistency determination unit 123 selects the adjacent node IP address of the connection destination node IP address from the configuration information table 131 as the connection destination adjacent node IP address.
  • connection information inconsistency determination unit 123 determines whether or not the connection destination adjacent node IP address includes the IP address of the target node.
  • connection information inconsistency determination unit 123 shifts the process to S970.
  • connection information inconsistency determination unit 123 polls the target node and the connection destination node, Configuration information is acquired from each of the connection destination nodes.
  • the connection information inconsistency determination unit 123 stores the acquired configuration information in the configuration information table 131, and shifts the processing to S970.
  • connection information inconsistency determination unit 123 shifts the process to S920.
  • connection information inconsistency determination process if there is a contradiction between the configuration information of the target node and the configuration information of the adjacent node, the configuration management apparatus 100 can perform re-polling on those nodes. However, the occurrence of inconsistencies in configuration information can be suppressed by the above-described polling order table creation processing.
  • the polling time interval is set so that the load is not concentrated. Furthermore, by setting the time difference between the polling time for the target node and the polling time for the adjacent node to be equal to or less than the time difference threshold value, it is possible to suppress the change of the configuration information of only one of those nodes. Thereby, it is possible to suppress the occurrence of inconsistencies in the configuration information of those nodes.
  • the polling time interval between multiple nodes with connection relationships can be shortened.
  • the management computer corresponds to the configuration management device 100 or the like.
  • the memory corresponds to the main storage device 120, the auxiliary storage device 130, and the like.
  • DESCRIPTION OF SYMBOLS 100 ... Configuration management device, 110 ... Processor, 120 ... Main storage device, 130 ... Auxiliary storage device, 140 ... Network interface, 200 ... Managed device group, 300 ... Managed device, 310 ... Processor, 320 ... Main storage device, 330: Auxiliary storage device, 340: Network interface

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Abstract

A management calculator comprises a memory and a processor connected to the memory and to a plurality of nodes in a network. The processor is configured to iterate an acquisition process. The acquisition process comprises: determining, under a scheduled time condition, a scheduled time to perform polling for each node; performing the polling according to the scheduled times, thereby acquiring a plurality of pieces of configuration information respectively stored in the plurality of nodes; storing the plurality of pieces of configuration information into the memory; in a case in which two or more of the plurality of pieces of configuration information are contradictory to each other, performing the polling for the two or more nodes respectively corresponding to the two or more pieces of configuration information, thereby acquiring two or more new pieces of configuration information respectively from the two or more nodes; and storing the two or more new pieces of configuration information into the memory. The scheduled time condition is that the time difference between the scheduled times of two nodes connected to each other is equal to or less than a predetermined time difference threshold value.

Description

管理計算機および管理方法Management computer and management method
　本発明は、管理計算機に関する。 The present invention relates to a management computer.
　ネットワーク機器の構成を管理する構成管理装置は、管理するネットワーク機器（以下、ノードと呼ぶ）の構成情報を定期的に取得（以下、ポーリングと呼ぶ）する。ポーリングを行うと、構成管理装置と、ノードと、構成管理装置およびノードの間のネットワークとに負荷がかかるため、この負荷を出来るだけ低減する必要がある。構成管理装置が大量のノードに対して同時刻にポーリングするとポーリングによる負荷が集中するため、ポーリングを分散してポーリングによる負荷を分散することが一般的である。 The configuration management apparatus that manages the configuration of the network device periodically acquires (hereinafter referred to as polling) configuration information of the network device (hereinafter referred to as a node) to be managed. When polling is performed, a load is applied to the configuration management device, the node, and the network between the configuration management device and the node. Therefore, it is necessary to reduce this load as much as possible. When the configuration management apparatus polls a large number of nodes at the same time, the load due to polling is concentrated. Therefore, it is common to distribute polling and distribute the load due to polling.
　特許文献１に記載の技術は、サブネットワーク内の１ノードのみをヘルス・チェックし、そのヘルス・チェックが正常であれば、他のノードはチェックしないことで、ヘルス・チェックのトラフィックを抑制する。次回に同じサブネットワークをチェックするとき、今回チェックしたノードの順番を最後尾にする。 The technology described in Patent Document 1 suppresses health check traffic by checking health of only one node in the sub-network and not checking other nodes if the health check is normal. The next time the same subnetwork is checked, the order of the nodes checked this time is the last.
特開２０００―１１５１６９号公報JP 2000-115169 A
　各ノードは、自ノードが他ノードと接続しているかどうかを示す構成情報を格納している。構成管理装置は、各ノードの構成情報を取得し、構成情報同士を突き合わせて、ノード間の接続関係を解析している。構成管理装置は、２つ（もしくはそれ以上）のノードにおいて、一方のノードからもう一方のノードへの接続関係のみではなく、逆の方向への接続関係も存在することで、それらのノード間に接続関係があると判定している。 Each node stores configuration information indicating whether its own node is connected to other nodes. The configuration management apparatus acquires the configuration information of each node, matches the configuration information, and analyzes the connection relationship between the nodes. The configuration management device has not only a connection relationship from one node to the other node but also a connection relationship in the opposite direction at two (or more) nodes. It is determined that there is a connection relationship.
　２つのノードＡ、Ｂがあり、そのノード間に接続関係があるとする。構成管理装置は、最初にノードＡへポーリングを行い、「ノードＡはノードＢとの接続関係を持つ」ことがわかる。その後ノードＡとノードＢ間の接続関係がなくなってから、間隔を置いて次にノードＢへのポーリングが行われた場合、「ノードＡはノードＢとの接続関係を持つ」が、逆に「ノードＢはノードＡとの接続関係を持たない」ため、ノードＡに格納されている接続関係と、ノードＢに格納されている接続関係とが矛盾する。このとき、構成管理装置は２つのノード（さらにその他のノードを含む場合もある）へ再ポーリングを行い、正しい接続関係を取得しようとする。しかし、接続関係の矛盾が起きるたびに再ポーリングが行われるため、その負荷がかかるという問題がある。 Suppose there are two nodes A and B, and there is a connection relationship between them. The configuration management apparatus first polls the node A and knows that “the node A has a connection relationship with the node B”. After that, when the connection relationship between the node A and the node B disappears, when the polling to the node B is performed at an interval, “the node A has the connection relationship with the node B” is reversed. Since the node B does not have a connection relationship with the node A, the connection relationship stored in the node A and the connection relationship stored in the node B are inconsistent. At this time, the configuration management apparatus re-polls two nodes (may include other nodes as well) and tries to acquire a correct connection relationship. However, there is a problem that a load is applied because re-polling is performed each time a connection inconsistency occurs.
　上記課題を解決するために、本発明の一態様である管理計算機は、メモリと、前記メモリに接続され、ネットワーク内の複数のノードに接続されるプロセッサと、を備える。前記プロセッサは、取得処理を繰り返すように構成されている。前記取得処理は、予定時刻条件の下、各ノードに対するポーリングの予定時刻を決定し、前記予定時刻に従ってポーリングを行うことで、前記複数のノードに夫々格納されている複数の構成情報を取得し、前記複数の構成情報を前記メモリへ格納し、前記複数の構成情報のうち２以上の構成情報が互いに矛盾する場合、前記２以上の構成情報に夫々対応する２以上のノードに対するポーリングを行うことで、前記２以上のノードから新たな２以上の構成情報を夫々取得し、前記新たな２以上の構成情報を前記メモリへ格納する、ことを含む。前記予定時刻条件は、互いに接続されている２つのノードの予定時刻の時間差が、予め設定された時間差閾値以下であることである。 In order to solve the above problem, a management computer according to one aspect of the present invention includes a memory and a processor connected to the memory and connected to a plurality of nodes in the network. The processor is configured to repeat the acquisition process. The acquisition process determines a scheduled polling time for each node under a scheduled time condition, and performs polling according to the scheduled time, thereby acquiring a plurality of configuration information respectively stored in the plurality of nodes, By storing the plurality of pieces of configuration information in the memory and polling two or more nodes corresponding to the two or more pieces of configuration information when two or more pieces of the pieces of configuration information are inconsistent with each other, , Acquiring two or more new configuration information from the two or more nodes, respectively, and storing the two or more new configuration information in the memory. The scheduled time condition is that a time difference between scheduled times of two nodes connected to each other is not more than a preset time difference threshold.
　ポーリングによる負荷を低減することができる。 It is possible to reduce the load caused by polling.
計算機システムの構成を示す。The configuration of the computer system is shown. 構成管理装置１００の構成を示す。2 shows a configuration of the configuration management apparatus 100. 被管理装置３００の構成を示す。2 shows a configuration of a managed apparatus 300. 構成情報テーブル１３１を示す。A configuration information table 131 is shown. ノード間の接続関係を示す。Indicates the connection relationship between nodes. ポーリング順番テーブル１３２を示す。A polling order table 132 is shown. 被管理ノードテーブル１３３を示す。A managed node table 133 is shown. 構成管理処理を示す。A configuration management process is shown. 第１ポーリング処理を示す。A 1st polling process is shown. グルーピング処理を示す。Grouping processing is shown. ポーリング順番決定処理を示す。The polling order determination process is shown. 探索再帰処理を示す。The search recursion process is shown. 第２ポーリング処理を示す。A 2nd polling process is shown. 構成情報取得処理を示す。A configuration information acquisition process is shown. 接続情報矛盾判定処理を示す。Connection information inconsistency determination processing is shown.
　以下、図面を参照して本発明の実施形態を説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
　以下の説明では、「×××テーブル」の表現にて情報を説明することがあるが、情報は、どのようなデータ構造で表現されていてもよい。すなわち、情報がデータ構造に依存しないことを示すために、「×××テーブル」を「×××情報」と呼ぶことができる。また、以下の説明において、各テーブルの構成は一例であり、１つのテーブルは、２以上のテーブルに分割されてもよいし、２以上のテーブルの全部又は一部が１つのテーブルであってもよい。 In the following description, information may be described using the expression “xxx table”, but the information may be expressed in any data structure. That is, “xxx table” can be referred to as “xxx information” to indicate that the information does not depend on the data structure. In the following description, the configuration of each table is an example, and one table may be divided into two or more tables, or all or part of the two or more tables may be a single table. Good.
　また、以下の説明では、要素の識別情報として、ＩＤが使用されるが、それに代えて又は加えて他種の識別情報が使用されてもよい。 In the following description, an ID is used as element identification information, but other types of identification information may be used instead of or in addition thereto.
　また、以下の説明では、同種の要素を区別しないで説明する場合には、参照符号又は参照符号における共通番号を使用し、同種の要素を区別して説明する場合は、その要素の参照符号を使用又は参照符号に代えてその要素に割り振られたＩＤを使用することがある。 In the following description, when a description is made without distinguishing the same type of element, a reference number or a common number in the reference number is used, and when a description is made by distinguishing the same type of element, the reference number of the element is used. Alternatively, an ID assigned to the element may be used instead of the reference code.
　また、以下の説明では、Ｉ／Ｏ（Input/Output）要求は、ライト要求又はリード要求であり、アクセス要求と呼ばれてもよい。 In the following description, an I / O (Input / Output) request is a write request or a read request, and may be referred to as an access request.
　また、以下の説明では、「プログラム」を主語として処理を説明する場合があるが、プログラムは、プロセッサ（例えばＣＰＵ（Central Processing Unit））によって実行されることで、定められた処理を、適宜に記憶資源（例えばメモリ）及び／又はインターフェースデバイス（例えば通信ポート）等を用いながら行うため、処理の主語がプロセッサとされてもよい。プログラムを主語として説明された処理は、プロセッサあるいはそのプロセッサを有する装置が行う処理又はシステムとしてもよい。また、プロセッサは、処理の一部または全部を行うハードウェア回路を含んでもよい。プログラムは、プログラムソースから計算機のような装置にインストールされてもよい。プログラムソースは、例えば、プログラム配布サーバまたは計算機が読み取り可能な記憶メディアであってもよい。プログラムソースがプログラム配布サーバの場合、プログラム配布サーバはプロセッサ（例えばＣＰＵ）と記憶資源を含み、記憶資源はさらに配布プログラムと配布対象であるプログラムとを記憶してよい。そして、プログラム配布サーバのプロセッサが配布プログラムを実行することで、プログラム配布サーバのプロセッサは配布対象のプログラムを他の計算機に配布してよい。また、以下の説明において、２以上のプログラムが１つのプログラムとして実現されてもよいし、１つのプログラムが２以上のプログラムとして実現されてもよい。 In the following description, the process may be described using “program” as a subject. However, the program is executed by a processor (for example, a CPU (Central Processing Unit)), so that a predetermined processing is appropriately performed. Since processing is performed using a storage resource (for example, a memory) and / or an interface device (for example, a communication port), the subject of processing may be a processor. The process described with the program as the subject may be a process or system performed by a processor or an apparatus having the processor. The processor may include a hardware circuit that performs a part or all of the processing. The program may be installed in a computer-like device from a program source. The program source may be, for example, a storage medium that can be read by a program distribution server or a computer. When the program source is a program distribution server, the program distribution server may include a processor (for example, a CPU) and a storage resource, and the storage resource may further store a distribution program and a program to be distributed. Then, the processor of the program distribution server executes the distribution program, so that the processor of the program distribution server may distribute the distribution target program to other computers. In the following description, two or more programs may be realized as one program, or one program may be realized as two or more programs.
　また、以下の説明では、管理システムは、一以上の計算機を含んでいてもよい。具体的には、例えば、管理計算機が情報を表示する場合（具体的には、例えば、管理計算機が自分の表示デバイスに情報を表示する、或いは、管理計算機が表示用情報を遠隔の表示用計算機に送信する場合）、管理計算機が管理システムである。また、例えば、複数の計算機で管理計算機と同等の機能が実現されている場合は、当該複数の計算機（表示を表示用計算機が行う場合は表示用計算機を含んでよい）が、管理システムである。管理計算機（例えば管理システム）は、表示システムを含むＩ／Ｏシステムに接続されたインタフェースデバイスと、記憶資源（例えばメモリ）と、インタフェースデバイス及び記憶資源に接続されたプロセッサとを有してよい。表示システムは、管理計算機が有する表示デバイスでもよいし、管理計算機に接続された表示用計算機でもよい。Ｉ／Ｏシステムは、管理計算機が有するＩ／Ｏデバイス（例えばキーボード及びポインティングデバイス、タッチパネル）でもよいし、管理計算機に接続された表示用計算機又は別の計算機でもよい。管理計算機が「表示用情報を表示する」ことは、表示システムに表示用情報を表示することであり、これは、管理計算機が有する表示デバイスに表示用情報を表示することであってもよいし、管理計算機が表示用計算機に表示用情報を送信することであってもよい（後者の場合は表示用計算機によって表示用情報が表示される）。また、管理計算機が情報を入出力するとは、管理計算機が有するＩ／Ｏデバイスとの間で情報の入出力を行うことであってもよいし、管理計算機に接続された遠隔の計算機（例えば表示用計算機）との間で情報の入出力を行うことであってもよい。情報の出力は、情報の表示であってもよい。 In the following description, the management system may include one or more computers. Specifically, for example, when the management computer displays information (specifically, for example, the management computer displays information on its own display device, or the management computer displays display information in a remote display computer) Management computer is the management system. For example, when a function equivalent to that of the management computer is realized by a plurality of computers, the plurality of computers (may include a display computer when the display computer performs display) is the management system. . The management computer (eg, management system) may include an interface device connected to the I / O system including the display system, a storage resource (eg, memory), and a processor connected to the interface device and the storage resource. The display system may be a display device included in the management computer or a display computer connected to the management computer. The I / O system may be an I / O device (for example, a keyboard and a pointing device or a touch panel) included in the management computer, a display computer connected to the management computer, or another computer. “Displaying display information” by the management computer means displaying the display information on the display system, which may be displaying the display information on a display device included in the management computer. The management computer may transmit display information to the display computer (in the latter case, the display information is displayed by the display computer). The management computer inputting / outputting information may be inputting / outputting information to / from an I / O device of the management computer, or a remote computer connected to the management computer (for example, a display) Information may be input / output to / from the computer. The information output may be a display of information.
　以下、計算機システムの構成について説明する。 The configuration of the computer system will be described below.
　図１は、計算機システムの構成を示す。 Fig. 1 shows the configuration of the computer system.
　計算機システムは、構成管理装置１００と、被管理装置群２００とを含む。構成管理装置１００は、ネットワークを介して被管理装置群２００に接続されている。被管理装置群２００は、複数の被管理装置３００を含む。各被管理装置３００は、ネットワークを介して少なくとも一つの他の被管理装置３００に接続されている。構成管理装置１００は、ネットワーク及び被管理装置３００を介して、全ての被管理装置３００に接続されている。各被管理装置３００をノードと呼ぶことがある。 The computer system includes a configuration management device 100 and a managed device group 200. The configuration management device 100 is connected to the managed device group 200 via a network. The managed device group 200 includes a plurality of managed devices 300. Each managed device 300 is connected to at least one other managed device 300 via a network. The configuration management device 100 is connected to all the managed devices 300 via the network and the managed device 300. Each managed device 300 may be referred to as a node.
　被管理装置３００は、ルータやスイッチ等のネットワーク機器である。また、被管理装置３００は、サーバ装置やストレージ装置であってもよい。 The managed device 300 is a network device such as a router or a switch. Further, the managed device 300 may be a server device or a storage device.
　図２は、構成管理装置１００の構成を示す。 FIG. 2 shows the configuration of the configuration management apparatus 100.
　構成管理装置１００は、プロセッサ１１０と、主記憶装置１２０と、補助記憶装置１３０と、ネットワークインタフェース１４０とを含む。 The configuration management device 100 includes a processor 110, a main storage device 120, an auxiliary storage device 130, and a network interface 140.
　主記憶装置１２０は、主にプログラムを格納する。補助記憶装置１３０は、主にデータを格納する。プロセッサ１１０は、主記憶装置１２０および補助記憶装置１３０に格納されているプログラムおよびデータを用いて、処理を実行する。ネットワークインタフェース１４０は、ネットワークに接続され、被管理装置３００と通信する。 The main storage device 120 mainly stores programs. The auxiliary storage device 130 mainly stores data. The processor 110 executes processing using programs and data stored in the main storage device 120 and the auxiliary storage device 130. The network interface 140 is connected to the network and communicates with the managed device 300.
　主記憶装置１２０は、プログラムとして、構成管理処理部１２１と、構成情報取得部１２２と、接続情報矛盾判定部１２３と、グルーピング部１２４と、ポーリング順番テーブル作成部１２５とを格納する。 The main storage device 120 stores a configuration management processing unit 121, a configuration information acquisition unit 122, a connection information inconsistency determination unit 123, a grouping unit 124, and a polling order table creation unit 125 as programs.
　補助記憶装置１３０は、データとして、構成情報テーブル１３１と、ポーリング順番テーブル１３２と、被管理ノードテーブル１３３とを格納する。 The auxiliary storage device 130 stores a configuration information table 131, a polling order table 132, and a managed node table 133 as data.
　構成管理装置１００は、入力デバイスおよび表示デバイスを含んでもよいし、入力デバイスおよび表示デバイスに接続されていてもよい。 The configuration management apparatus 100 may include an input device and a display device, or may be connected to the input device and the display device.
　図３は、被管理装置３００の構成を示す。 FIG. 3 shows the configuration of the managed device 300.
　被管理装置３００は、プロセッサ３１０と、主記憶装置３２０と、補助記憶装置３３０と、ネットワークインタフェース３４０とを含む。 The managed device 300 includes a processor 310, a main storage device 320, an auxiliary storage device 330, and a network interface 340.
　主記憶装置３２０は、主にプログラムを格納する。補助記憶装置３３０は、主にデータを格納する。プロセッサ３１０は、主記憶装置３２０および補助記憶装置３３０に格納されているプログラムおよびデータを用いて、処理を実行する。ネットワークインタフェース３４０は、ネットワークに接続され、他の被管理装置３００や構成管理装置１００と通信する。 The main storage device 320 mainly stores programs. The auxiliary storage device 330 mainly stores data. The processor 310 executes processing using programs and data stored in the main storage device 320 and the auxiliary storage device 330. The network interface 340 is connected to the network and communicates with other managed devices 300 and the configuration management device 100.
　主記憶装置３２０は、プログラムとして、構成情報応答部３２１を格納する。 The main storage device 320 stores the configuration information response unit 321 as a program.
　補助記憶装置３３０は、データとして、被管理装置構成情報テーブル３３１を格納する。 The auxiliary storage device 330 stores a managed device configuration information table 331 as data.
　図４は、構成情報テーブル１３１を示す。 FIG. 4 shows the configuration information table 131.
　構成情報テーブル１３１は、ポーリングにより各ノードから取得された構成情報を格納する。構成情報テーブル１３１は、構成情報毎のエントリを有する。一つの構成情報のエントリは、構成情報ＩＤ４１１と、ノードＩＤ４１２と、ＩＰアドレス４１３と、サブネット４１４と、隣接ノードＩＰアドレス４１５と、接続プロトコル４１６とを含む。 The configuration information table 131 stores configuration information acquired from each node by polling. The configuration information table 131 has an entry for each configuration information. One configuration information entry includes a configuration information ID 411, a node ID 412, an IP address 413, a subnet 414, an adjacent node IP address 415, and a connection protocol 416.
　構成情報ＩＤ４１１は、構成情報の識別子である。ノードＩＤ４１２は、当該構成情報の送信元ノードの識別子である。ＩＰアドレス４１３は、当該送信元ノードのＩＰアドレスである。サブネット４１４は、当該送信元ノードが属するサブネットのネットワークアドレスである。隣接ノードＩＰアドレス４１５は、当該送信元ノードに直接接続されている他のノードである隣接ノードの、ＩＰアドレスである。接続プロトコル４６０は、当該送信元ノードと当該隣接ノードの間の通信に用いられる接続プロトコルを示す。 Configuration information ID 411 is an identifier of configuration information. The node ID 412 is an identifier of the transmission source node of the configuration information. The IP address 413 is the IP address of the transmission source node. The subnet 414 is a network address of a subnet to which the transmission source node belongs. The adjacent node IP address 415 is an IP address of an adjacent node that is another node directly connected to the transmission source node. The connection protocol 460 indicates a connection protocol used for communication between the transmission source node and the adjacent node.
　図５は、ノード間の接続関係を示す。 Fig. 5 shows the connection relationship between nodes.
　この図は、前述の構成情報テーブル１３１の例に示されたノード間の接続関係を示す。ノードＮ００１、Ｎ００２の間の接続関係は、構成情報ＩＤが１、３である構成情報に示されている。ノードＮ００２、Ｎ００４の間の接続関係は、構成情報ＩＤが５、６である構成情報に示されている。ノードＮ００２、Ｎ００５の間の接続関係は、構成情報ＩＤが７、８である構成情報に示されている。ノードＮ００４、Ｎ００５の間の接続関係は、構成情報ＩＤが９、１０である構成情報に示されている。ノードＮ００１、Ｎ００３の間の接続関係は、構成情報ＩＤが２、４である構成情報に示されている。 This figure shows the connection relationship between nodes shown in the example of the configuration information table 131 described above. The connection relationship between the nodes N001 and N002 is shown in the configuration information whose configuration information IDs are 1 and 3. The connection relationship between the nodes N002 and N004 is shown in the configuration information whose configuration information IDs are 5 and 6. The connection relationship between the nodes N002 and N005 is shown in the configuration information whose configuration information IDs are 7 and 8. The connection relationship between the nodes N004 and N005 is shown in the configuration information whose configuration information IDs are 9 and 10. The connection relationship between the nodes N001 and N003 is shown in the configuration information whose configuration information IDs are 2 and 4.
　ノードＮ００１、Ｎ００２、Ｎ００４、Ｎ００５は、サブネット192.168.1.0/24に属している。そのサブネットのうち、ノードＮ００１、Ｎ００２は、接続プロトコルとしてＨＳＲＰ（Hot Standby Router Protocol）を用いて互いに接続されており、ノードＮ００１、Ｎ００４、Ｎ００５は、接続プロトコルとしてＳＴＰ（Spanning Tree Protocol）を用いて互いに接続されている。 Nodes N001, N002, N004, and N005 belong to the subnet 192.168.1.0/24. Among the subnets, the nodes N001 and N002 are connected to each other using HSRP (Hot Standby Standby Router Protocol) as the connection protocol, and the nodes N001, N004, and N005 use STP (Spanning Tree Protocol) as the connection protocol. Are connected to each other.
　ノードＮ００１、Ｎ００３は、サブネット192.168.2.0/24に属している。ノードＮ００１、Ｎ００３は、接続プロトコルとしてＬＡＧ（Link Aggregation Group）を用いて互いに接続されている。 Nodes N001 and N003 belong to the subnet 192.168.2.0/24. Nodes N001 and N003 are connected to each other using LAG (Link Aggregation Group) as a connection protocol.
　図６は、ポーリング順番テーブル１３２を示す。 FIG. 6 shows the polling order table 132.
　ポーリング順番テーブル１３２は、ポーリングの計画を示す。ポーリング順番テーブル１３２は、ポーリング毎のエントリを有する。一つのポーリングのエントリは、順番ＩＤ４２１と、時刻４２２と、ノードＩＤ４２３とを含む。 The polling order table 132 shows a polling plan. The polling order table 132 has an entry for each polling. One polling entry includes an order ID 421, a time 422, and a node ID 423.
　順番ＩＤ４２１は、当該ポーリングの順番であるポーリング順番を示す。時刻４２２は、当該ポーリングを実行する時刻であるポーリング時刻（予定時刻）を示す。ノードＩＤ４２３は、当該ポーリングにおける問い合わせ先のノードの識別子である。 The order ID 421 indicates a polling order that is the order of the polling. A time 422 indicates a polling time (scheduled time) that is a time for executing the polling. The node ID 423 is an identifier of a node as an inquiry destination in the polling.
　図７は、被管理ノードテーブル１３３を示す。 FIG. 7 shows the managed node table 133.
　被管理ノードテーブル１３３は、管理者により設定され、構成管理装置１００により管理されるノードの一覧を示す。被管理ノードテーブル１３３は、ノード毎のエントリを有する。一つのノードのエントリは、管理番号（Ｎｏ．）４３１と、被管理ノードＩＰアドレス４３２とを含む。 The managed node table 133 shows a list of nodes set by the administrator and managed by the configuration management apparatus 100. The managed node table 133 has an entry for each node. The entry of one node includes a management number (No.) 431 and a managed node IP address 432.
　管理番号４３１は、ノードの番号である。被管理ノードＩＰアドレス４３２は、当該ノードのＩＰアドレスである。 Management number 431 is a node number. The managed node IP address 432 is the IP address of the node.
　以下、計算機システムの動作について説明する。 The operation of the computer system is described below.
　構成管理装置１００の構成管理処理部１２１は、構成管理処理を行う。 The configuration management processing unit 121 of the configuration management apparatus 100 performs configuration management processing.
　図８は、構成管理処理を示す。 FIG. 8 shows the configuration management process.
　Ｓ１１０において構成管理処理部１２１は、ユーザから被管理ノードテーブル１３３への入力を受け付ける。ここで、構成管理処理部１２１は、表示デバイスに入力フォームを表示させ、入力デバイスへの入力に基づいてＩＰアドレスを取得し、取得されたＩＰアドレスを、被管理ノードテーブル１３３へ格納する。 In S110, the configuration management processing unit 121 receives an input from the user to the managed node table 133. Here, the configuration management processing unit 121 displays an input form on the display device, acquires an IP address based on an input to the input device, and stores the acquired IP address in the managed node table 133.
　Ｓ１２０において構成管理処理部１２１は、後述の第１ポーリング処理（初期取得処理）を行う。 In S120, the configuration management processing unit 121 performs a first polling process (initial acquisition process) described later.
　Ｓ１３０において構成管理処理部１２１は、構成管理処理を停止させるまで、Ｓ１４０、Ｓ１３０～Ｓ１６０の処理（取得処理）を繰り返す。 In S130, the configuration management processing unit 121 repeats the processing (acquisition processing) of S140 and S130 to S160 until the configuration management processing is stopped.
　Ｓ１４０において構成管理処理部１２１は、後述のグルーピング処理を行う。Ｓ１５０において構成管理処理部１２１は、後述の第２ポーリング処理を行う。Ｓ１６０において構成管理処理部１２１は、処理をＳ１３０へ移行させる。 In S140, the configuration management processing unit 121 performs a grouping process described later. In S150, the configuration management processing unit 121 performs a second polling process described later. In S160, the configuration management processing unit 121 shifts the process to S130.
　以上の構成管理処理によれば、構成管理装置１００は、初回のポーリング処理の後、各ノードのポーリング順番を決定し、ポーリング順番に従ってポーリング処理を行うことができる。 According to the configuration management process described above, the configuration management apparatus 100 can determine the polling order of each node after the initial polling process and perform the polling process according to the polling order.
　次に、前述のＳ１２０における第１ポーリング処理について説明する。 Next, the first polling process in S120 described above will be described.
　図９は、第１ポーリング処理を示す。 FIG. 9 shows the first polling process.
　Ｓ２１０において構成情報取得部１２２は、補助記憶装置１３０から被管理ノードテーブル１３３を取得する。 In S210, the configuration information acquisition unit 122 acquires the managed node table 133 from the auxiliary storage device 130.
　Ｓ２２０において構成情報取得部１２２は、Ｓ２２０～Ｓ２６０の処理を、被管理ノードテーブル１３３におけるノード数だけ繰り返す。例えば、構成情報取得部１２２は、予め設定されたポーリング時間間隔毎に、Ｓ２２０～Ｓ２６０の処理を行う。 In S220, the configuration information acquisition unit 122 repeats the processing of S220 to S260 by the number of nodes in the managed node table 133. For example, the configuration information acquisition unit 122 performs the processing of S220 to S260 at every preset polling time interval.
　Ｓ２３０において構成情報取得部１２２は、被管理ノードテーブル１３３の中から未選択の１つのノードを対象ノードとして選択する。 In S230, the configuration information acquisition unit 122 selects one unselected node as a target node from the managed node table 133.
　Ｓ２４０において構成情報取得部１２２は、対象ノードに対するポーリングを行うことで、対象ノードから構成情報を取得する。 In S240, the configuration information acquisition unit 122 acquires configuration information from the target node by polling the target node.
　Ｓ２５０において構成情報取得部１２２は、取得された構成情報を構成情報テーブル１３１へ格納する。 In S250, the configuration information acquisition unit 122 stores the acquired configuration information in the configuration information table 131.
　Ｓ２６０において構成情報取得部１２２は、処理をＳ２２０へ移行させる。 In S260, the configuration information acquisition unit 122 shifts the process to S220.
　以上の第１ポーリング処理によれば、構成管理装置１００は、被管理ノードテーブル１３３に示された全てのノードに対してポーリングを行うことができる。 According to the first polling process described above, the configuration management apparatus 100 can perform polling for all the nodes indicated in the managed node table 133.
　次に、前述のＳ１４０におけるグルーピング処理について説明する。 Next, the grouping process in S140 described above will be described.
　図１０は、グルーピング処理を示す。 FIG. 10 shows the grouping process.
　Ｓ３１０においてグルーピング部１２４は、ポーリング順番テーブル１３２の内容を削除する。 In S310, the grouping unit 124 deletes the contents of the polling order table 132.
　Ｓ３２０においてグルーピング部１２４は、構成情報テーブル１３１の中から全てのノードＩＤを取得し、処理番号を１からノードＩＤ数までインクリメントしながらＳ３２０～Ｓ３４０の処理を繰り返す。 In S320, the grouping unit 124 acquires all node IDs from the configuration information table 131, and repeats the processes of S320 to S340 while incrementing the process number from 1 to the number of node IDs.
　Ｓ３３０においてグルーピング部１２４は、ポーリング順番テーブル１３２の処理番号のエントリの順番４２１へ処理番号を設定する。処理番号が１である場合、グルーピング部１２４は、当該エントリの時刻４２２へ予め設定された開始時刻を設定する。処理番号が１でない場合、グルーピング部１２４は、直前のエントリの時刻４２２にポーリング時間間隔を加算することで新たなポーリング時刻を決定し、当該エントリの時刻４２２へポーリング時刻を設定する。Ｓ３４０においてグルーピング部１２４は、処理をＳ３２０へ移行させる。 In S330, the grouping unit 124 sets the process number to the order 421 of the process number entries in the polling order table 132. When the process number is 1, the grouping unit 124 sets a preset start time to the time 422 of the entry. When the processing number is not 1, the grouping unit 124 determines a new polling time by adding the polling time interval to the time 422 of the previous entry, and sets the polling time to the time 422 of the entry. In S340, the grouping unit 124 shifts the process to S320.
　Ｓ３５０においてグルーピング部１２４は、構成情報テーブル１３１内のノードＩＤ４１２を、サブネット４１４の値毎のサブネットグループに分ける。 In S350, the grouping unit 124 divides the node ID 412 in the configuration information table 131 into subnet groups for each value of the subnet 414.
　Ｓ３６０においてグルーピング部１２４は、サブネットグループ番号を１からサブネットグループ数までインクリメントしながらＳ３６０～Ｓ４２０の処理を繰り返す。 In S360, the grouping unit 124 repeats the processing of S360 to S420 while incrementing the subnet group number from 1 to the number of subnet groups.
　Ｓ３７０においてグルーピング部１２４は、サブネットグループ番号のサブネットグループ内のノードＩＤを、接続プロトコル４１６の値毎の接続グループに分ける。 In S370, the grouping unit 124 divides the node IDs in the subnet group of the subnet group number into connection groups for each value of the connection protocol 416.
　Ｓ３８０においてグルーピング部１２４は、接続グループ番号を１から接続グループ数までインクリメントしながらＳ３８０～Ｓ４１０の処理を繰り返す。 In S380, the grouping unit 124 repeats the processes of S380 to S410 while incrementing the connection group number from 1 to the number of connection groups.
　Ｓ３９０においてグルーピング部１２４は、接続グループ番号の接続グループから、ランダムに１つのノードをルートノードとして選択する。 In S390, the grouping unit 124 randomly selects one node as the root node from the connection group having the connection group number.
　Ｓ４００においてグルーピング部１２４は、後述のポーリング順番決定処理を行う。 In S400, the grouping unit 124 performs a polling order determination process described later.
　Ｓ４１０においてグルーピング部１２４は、処理をＳ３８０へ移行させる。 In S410, the grouping unit 124 shifts the process to S380.
　Ｓ４２０においてグルーピング部１２４は、処理をＳ２６０へ移行させる。 In S420, the grouping unit 124 shifts the process to S260.
　以上のグルーピング処理によれば、構成管理装置１００は、ノードをサブネットと接続プロトコルで接続グループに分け、接続グループ毎にポーリングの順番を決定することができる。 According to the grouping process described above, the configuration management apparatus 100 can divide the nodes into connection groups based on subnets and connection protocols, and determine the polling order for each connection group.
　図１１は、ポーリング順番決定処理を示す。 FIG. 11 shows a polling order determination process.
　Ｓ５１０においてポーリング順番テーブル作成部１２５は、ポーリング順番テーブル１３２における次の順番を対象ポーリング順番として選択し、対象ポーリング順番のエントリへルートノードを登録する。 In S510, the polling order table creation unit 125 selects the next order in the polling order table 132 as the target polling order, and registers the root node in the entry of the target polling order.
　Ｓ５２０においてポーリング順番テーブル作成部１２５は、ルートノードが探索済みであることを記録する。 In S520, the polling order table creation unit 125 records that the root node has been searched.
　Ｓ５３０においてポーリング順番テーブル作成部１２５は、ルートノードのノードＩＤを引数として、後述の探索再帰処理を行う。 In S530, the polling order table creation unit 125 performs a search recursion process described later using the node ID of the root node as an argument.
　以上のポーリング順番決定処理によれば、構成管理装置１００は、ルートノードから順にポーリングの順番を決定することができる。 According to the above polling order determination processing, the configuration management apparatus 100 can determine the polling order in order from the root node.
　図１２は、探索再帰処理を示す。 FIG. 12 shows search recursion processing.
　ここでは、探索再帰処理の引数に示されたノードを親ノードと呼ぶ。 Here, the node indicated in the argument of the search recursion process is called the parent node.
　Ｓ６１０においてポーリング順番テーブル作成部１２５は、構成情報テーブル１３１から、親ノードのエントリの隣接ノードＩＰアドレス４１５に示されたノードを、子ノードとして検出し、全ての子ノードに対してＳ６１０～Ｓ６９０の処理を繰り返す。 In S610, the polling order table creation unit 125 detects the node indicated by the adjacent node IP address 415 of the entry of the parent node from the configuration information table 131 as a child node, and performs S610 to S690 for all the child nodes. Repeat the process.
　Ｓ６２０においてポーリング順番テーブル作成部１２５は、検出された子ノードの中から一つの子ノードを対象ノードとして選択する。 In S620, the polling order table creation unit 125 selects one child node as a target node from the detected child nodes.
　Ｓ６３０においてポーリング順番テーブル作成部１２５は、対象ノードが探索済みであるか否かを判定する。対象ノードが探索済みであると判定された場合（Ｓ６３０：ＹＥＳ）、ポーリング順番テーブル作成部１２５は、処理をＳ６２０へ移行させる。対象ノードが探索済みでないと判定された場合（Ｓ６３０：ＮＯ）、ポーリング順番テーブル作成部１２５は、処理をＳ６４０へ移行させる。 In S630, the polling order table creation unit 125 determines whether the target node has been searched. When it is determined that the target node has been searched (S630: YES), the polling order table creation unit 125 shifts the process to S620. When it is determined that the target node has not been searched (S630: NO), the polling order table creation unit 125 shifts the process to S640.
　Ｓ６４０においてポーリング順番テーブル作成部１２５は、対象ノードが探索済みであると記録する。 In S640, the polling order table creation unit 125 records that the target node has been searched.
　Ｓ６５０においてポーリング順番テーブル作成部１２５は、ポーリング順番テーブル１３２における次のポーリング順番を対象ポーリング順番として選択し、対象ポーリング順番のエントリへ対象ノードを登録する。 In S650, the polling order table creation unit 125 selects the next polling order in the polling order table 132 as the target polling order, and registers the target node in the entry of the target polling order.
　Ｓ６６０においてポーリング順番テーブル作成部１２５は、ポーリング順番テーブル１３２における、親ノードのポーリング時刻と対象ノードのポーリング時刻との時間差の最小値が、予め設定された時間差閾値以下であるか否かを判定する。ポーリング順番テーブル１３２において、親ノードに対する複数のポーリング時刻がある場合、対象ノードのポーリング時刻に最も近い親ノードのポーリング時刻と、対象ノードのポーリング時刻との時間差が、時間差の最小値である。 In S660, the polling order table creation unit 125 determines whether or not the minimum value of the time difference between the polling time of the parent node and the polling time of the target node in the polling order table 132 is equal to or less than a preset time difference threshold value. . In the polling order table 132, when there are a plurality of polling times for the parent node, the time difference between the polling time of the parent node closest to the polling time of the target node and the polling time of the target node is the minimum value of the time difference.
　時間差が時間差閾値以下でないと判定された場合（Ｓ６６０：ＮＯ）、Ｓ６７０においてポーリング順番テーブル作成部１２５は、ポーリング順番テーブル１３２における対象ポーリング順番のエントリへ親ノードを登録し、次のポーリング順番を対象ポーリング順番として選択し、対象ポーリング順番のエントリへ対象ノードを登録する。 When it is determined that the time difference is not equal to or less than the time difference threshold (S660: NO), in S670, the polling order table creation unit 125 registers the parent node in the entry of the target polling order in the polling order table 132, and targets the next polling order. Select as the polling order and register the target node in the target polling order entry.
　時間差が時間差閾値以下であると判定された場合（Ｓ６６０：ＹＥＳ）、Ｓ６８０においてポーリング順番テーブル作成部１２５は、対象ノードのノードＩＤを引数として、探索再帰処理を行う。 When it is determined that the time difference is equal to or smaller than the time difference threshold (S660: YES), in S680, the polling order table creation unit 125 performs search recursion processing using the node ID of the target node as an argument.
　Ｓ６９０においてポーリング順番テーブル作成部１２５は、処理をＳ６１０へ移行させる。 In S690, the polling order table creation unit 125 shifts the process to S610.
　以上の探索再帰処理によれば、ルートノードから隣接するノードを順に探索することができ、対象ノードから隣接するノードを順に探索することができる。また、互いに隣接する２つのノードのポーリング時刻の時間差が時間差閾値以下になるように、各ノードのポーリング時刻を決定することができる。 According to the search recursion processing described above, it is possible to sequentially search adjacent nodes from the root node, and sequentially search adjacent nodes from the target node. In addition, the polling time of each node can be determined so that the time difference between the polling times of two adjacent nodes is equal to or less than the time difference threshold.
　例えば、図５の例において、接続グループに従って、Ｎ００１、Ｎ００２、Ｎ００４、Ｎ００５、Ｎ００３の順に探索され、互いに隣接するＮ００１とＮ００３のポーリング時刻の時間差が時間差閾値を超えた場合、ポーリング順番テーブル作成部１２５は、Ｎ００３の直前に再度Ｎ００１のポーリング順番を設定することで、ポーリング順番は、Ｎ００１、Ｎ００２、Ｎ００４、Ｎ００５、Ｎ００１、Ｎ００３になる。これにより、全てのポーリング時刻は、互いに隣接する２つのノードのポーリング時刻の時間差が時間差閾値以下になるという予定時刻条件を満たすことができる。 For example, in the example of FIG. 5, when a time difference between polling times of N001 and N003 adjacent to each other is searched in the order of N001, N002, N004, N005, and N003 according to the connection group, a polling order table creation unit 125 sets the polling order of N001 again immediately before N003, and the polling order becomes N001, N002, N004, N005, N001, and N003. Thereby, all the polling times can satisfy the scheduled time condition that the time difference between the polling times of two adjacent nodes is equal to or less than the time difference threshold.
　なお、ポーリング順番テーブル作成部１２５は、接続プロトコルに基づいて、接続関係の強いノードを優先して探索してもよい。また、ノード間の接続関係に基づいて、探索順番を決定してもよい。 Note that the polling order table creation unit 125 may preferentially search for nodes having a strong connection relationship based on the connection protocol. Further, the search order may be determined based on the connection relationship between the nodes.
　ポーリング時間間隔は、全ノード数と第２ポーリング処理の処理時間であるポーリング処理時間とに基づいて決定されてもよい。例えば、全ノードのポーリングがポーリング処理時間内に終わるようにポーリング時間間隔が決定されてもよい。これにより、負荷をできるだけ抑えたポーリング時間間隔を設定することができる。また、時間差閾値は、ポーリング順番の差の閾値である順番差閾値で表されてもよい。例えば、ポーリング順番テーブル作成部１２５は、ポーリング順番テーブル１３２において、互いに隣接する２つのノードのポーリング順番の差が、予め設定された順番差閾値以下になるように、ポーリング順番を決定する。 The polling time interval may be determined based on the total number of nodes and the polling processing time that is the processing time of the second polling processing. For example, the polling time interval may be determined such that polling of all nodes ends within the polling processing time. Thereby, it is possible to set a polling time interval that suppresses the load as much as possible. Further, the time difference threshold value may be represented by an order difference threshold value that is a threshold value of a difference in polling order. For example, in the polling order table 132, the polling order table creation unit 125 determines the polling order so that the difference in polling order between two adjacent nodes is equal to or less than a preset order difference threshold.
　次に、前述のＳ１４０におけるグルーピング処理について説明する。 Next, the grouping process in S140 described above will be described.
　図１３は、第２ポーリング処理を示す。 FIG. 13 shows the second polling process.
　Ｓ７１０において構成情報取得部１２２は、ポーリング順番テーブル１３２の各エントリに対してＳ７１０～Ｓ７５０の処理を行う。 In S710, the configuration information acquisition unit 122 performs the processing of S710 to S750 for each entry in the polling order table 132.
　Ｓ７２０において構成情報取得部１２２は、ポーリング順番テーブル１３２から順に１つのエントリを選択し、そのエントリのノードを対象ノードとして選択する。 In S720, the configuration information acquisition unit 122 selects one entry in order from the polling order table 132, and selects the node of the entry as a target node.
　Ｓ７３０において構成情報取得部１２２は、対象ノードに対して構成情報取得処理を行う。 In S730, the configuration information acquisition unit 122 performs configuration information acquisition processing on the target node.
　Ｓ７４０において構成情報取得部１２２は、次のエントリのポーリング時刻まで待機する。 In S740, the configuration information acquisition unit 122 waits until the polling time of the next entry.
　Ｓ７５０において構成情報取得部１２２は、処理をＳ７１０へ移行させる。 In S750, the configuration information acquisition unit 122 shifts the process to S710.
　以上の第２ポーリング処理によれば、構成管理装置１００は、ポーリング順番テーブル１３２に示された順番で全てのノードに対してポーリングを行うことができる。 According to the second polling process described above, the configuration management apparatus 100 can poll all nodes in the order shown in the polling order table 132.
　図１４は、構成情報取得処理を示す。 FIG. 14 shows the configuration information acquisition process.
　Ｓ８１０において構成情報取得部１２２は、対象ノードに対するポーリングを行うことで、対象ノードから構成情報を取得する。 In S810, the configuration information acquisition unit 122 acquires configuration information from the target node by polling the target node.
　Ｓ８２０において構成情報取得部１２２は、取得された構成情報を、構成情報テーブル１３１へ格納することで、構成情報テーブル１３１を更新する。ここで、構成情報が取得されなかった場合、構成情報取得部１２２は、構成情報テーブル１３１から、対応するエントリを削除する。構成情報が取得された場合、構成情報取得部１２２は、構成情報テーブル１３１において、対応するエントリの内容を、取得された構成情報に置き換える。 In S820, the configuration information acquisition unit 122 updates the configuration information table 131 by storing the acquired configuration information in the configuration information table 131. Here, when the configuration information is not acquired, the configuration information acquisition unit 122 deletes the corresponding entry from the configuration information table 131. When the configuration information is acquired, the configuration information acquisition unit 122 replaces the content of the corresponding entry in the configuration information table 131 with the acquired configuration information.
　Ｓ８３０において構成情報取得部１２２は、後述の接続情報矛盾判定処理を行う。 In S830, the configuration information acquisition unit 122 performs connection information inconsistency determination processing described later.
　以上の構成情報取得処理によれば、構成管理装置１００は、ポーリング順番により示された各ノードから構成情報を取得し、構成情報の矛盾を判定することができる。 According to the configuration information acquisition process described above, the configuration management apparatus 100 can acquire configuration information from each node indicated by the polling order, and determine configuration information inconsistencies.
　図１５は、接続情報矛盾判定処理を示す。 FIG. 15 shows connection information inconsistency determination processing.
　Ｓ９１０において接続情報矛盾判定部１２３は、構成情報テーブル１３１から対象ノードの隣接ノードＩＰアドレスを、対象隣接ノードＩＰアドレスとして選択する。 In S910, the connection information inconsistency determination unit 123 selects the adjacent node IP address of the target node from the configuration information table 131 as the target adjacent node IP address.
　Ｓ９２０において接続情報矛盾判定部１２３は、対象隣接ノードＩＰアドレスの中から一つのノードを接続先ノードＩＰアドレスとして選択し、接続先ノードＩＰアドレスに対し、Ｓ９２０～Ｓ９７０の処理を繰り返す。 In S920, the connection information inconsistency determination unit 123 selects one node as the connection destination node IP address from the target adjacent node IP addresses, and repeats the processing of S920 to S970 for the connection destination node IP address.
　Ｓ９３０において接続情報矛盾判定部１２３は、構成情報テーブル１３１から接続先ノードＩＰアドレスの隣接ノードＩＰアドレスを、接続先隣接ノードＩＰアドレスとして選択する。 In S930, the connection information inconsistency determination unit 123 selects the adjacent node IP address of the connection destination node IP address from the configuration information table 131 as the connection destination adjacent node IP address.
　Ｓ９４０において接続情報矛盾判定部１２３は、接続先隣接ノードＩＰアドレスが対象ノードのＩＰアドレスを含むか否かを判定する。 In S940, the connection information inconsistency determination unit 123 determines whether or not the connection destination adjacent node IP address includes the IP address of the target node.
　接続先隣接ノードＩＰアドレスが対象ノードのＩＰアドレスを含むと判定された場合（Ｓ９４０：ＹＥＳ）、接続情報矛盾判定部１２３は、処理をＳ９７０へ移行させる。 When it is determined that the connection destination adjacent node IP address includes the IP address of the target node (S940: YES), the connection information inconsistency determination unit 123 shifts the process to S970.
　接続先隣接ノードＩＰアドレスが対象ノードのＩＰアドレスを含まないと判定された場合（Ｓ９４０：ＮＯ）、Ｓ９５０において接続情報矛盾判定部１２３は、対象ノードと接続先ノードに対するポーリングを行い、対象ノードと接続先ノードの夫々から構成情報を取得する。Ｓ９６０において接続情報矛盾判定部１２３は、取得された構成情報を構成情報テーブル１３１へ格納し、処理をＳ９７０へ移行させる。 When it is determined that the connection destination adjacent node IP address does not include the IP address of the target node (S940: NO), in S950, the connection information inconsistency determination unit 123 polls the target node and the connection destination node, Configuration information is acquired from each of the connection destination nodes. In S960, the connection information inconsistency determination unit 123 stores the acquired configuration information in the configuration information table 131, and shifts the processing to S970.
　Ｓ９７０において接続情報矛盾判定部１２３は、処理をＳ９２０へ移行させる。 In S970, the connection information inconsistency determination unit 123 shifts the process to S920.
　以上の接続情報矛盾判定処理によれば、構成管理装置１００は、対象ノードの構成情報とその隣接ノードの構成情報に矛盾があれば、それらのノードに対して再ポーリングを行うことができる。但し、前述のポーリング順番テーブル作成処理により、構成情報の矛盾の発生を抑えることができる。 According to the above connection information inconsistency determination process, if there is a contradiction between the configuration information of the target node and the configuration information of the adjacent node, the configuration management apparatus 100 can perform re-polling on those nodes. However, the occurrence of inconsistencies in configuration information can be suppressed by the above-described polling order table creation processing.
　ポーリング時間間隔が短いと負荷が掛かり、ポーリング時間間隔が長いと２つの構成情報の間に矛盾が生じやすくなり、再ポーリングを行うため負荷が掛かる。本実施例によれば、負荷が集中しない程度にポーリング時間間隔を設定する。更に、対象ノードに対するポーリング時刻と、その隣接ノードに対するポーリング時刻との時間差を時間差閾値以下にすることで、それらのノードの一方だけの構成情報が変化することを抑えることができる。これにより、それらのノードの構成情報の矛盾の発生を抑えることができる。 ∙ If the polling time interval is short, a load is applied. If the polling time interval is long, inconsistency tends to occur between the two pieces of configuration information, and a load is applied because re-polling is performed. According to this embodiment, the polling time interval is set so that the load is not concentrated. Furthermore, by setting the time difference between the polling time for the target node and the polling time for the adjacent node to be equal to or less than the time difference threshold value, it is possible to suppress the change of the configuration information of only one of those nodes. Thereby, it is possible to suppress the occurrence of inconsistencies in the configuration information of those nodes.
　また、接続関係を持つ複数のノードをグルーピングして、グループ内のノードは連続してポーリングするように、ポーリング時刻の順序を決定することで、接続関係を持つ複数のノード間のポーリングの時間間隔を短くすることができる。 In addition, by grouping multiple nodes with connection relationships and determining the polling time order so that the nodes in the group poll continuously, the polling time interval between multiple nodes with connection relationships Can be shortened.
　管理計算機は、構成管理装置１００等に対応する。メモリは、主記憶装置１２０、補助記憶装置１３０等に対応する。 The management computer corresponds to the configuration management device 100 or the like. The memory corresponds to the main storage device 120, the auxiliary storage device 130, and the like.
　以上、本発明の実施形態を説明したが、これは本発明の説明のための例示であって、本発明の範囲を上記構成に限定する趣旨ではない。本発明は、他の種々の形態でも実施する事が可能である。 As mentioned above, although embodiment of this invention was described, this is an illustration for description of this invention, Comprising: It is not the meaning which limits the scope of the present invention to the said structure. The present invention can be implemented in various other forms.
　１００…構成管理装置、　１１０…プロセッサ、　１２０…主記憶装置、　１３０…補助記憶装置、　１４０…ネットワークインタフェース、　２００…被管理装置群、　３００…被管理装置、　３１０…プロセッサ、　３２０…主記憶装置、　３３０…補助記憶装置、　３４０…ネットワークインタフェース DESCRIPTION OF SYMBOLS 100 ... Configuration management device, 110 ... Processor, 120 ... Main storage device, 130 ... Auxiliary storage device, 140 ... Network interface, 200 ... Managed device group, 300 ... Managed device, 310 ... Processor, 320 ... Main storage device, 330: Auxiliary storage device, 340: Network interface

Claims (8)

  1. 　メモリと、
    　前記メモリに接続され、ネットワーク内の複数のノードに接続されるプロセッサと、
    を備え、
    　前記プロセッサは、取得処理を繰り返すように構成されており、
    　前記取得処理は、
    　　予定時刻条件の下、各ノードに対するポーリングの予定時刻を決定し、
    　　前記予定時刻に従ってポーリングを行うことで、前記複数のノードに夫々格納されている複数の構成情報を取得し、
    　　前記複数の構成情報を前記メモリへ格納し、
    　　前記複数の構成情報のうち２以上の構成情報が互いに矛盾する場合、前記２以上の構成情報に夫々対応する２以上のノードに対するポーリングを行うことで、前記２以上のノードから新たな２以上の構成情報を夫々取得し、
    　　前記新たな２以上の構成情報を前記メモリへ格納する、
    ことを含み、
    　前記予定時刻条件は、互いに接続されている２つのノードの予定時刻の時間差が、予め設定された時間差閾値以下であることである、
    管理計算機。     Memory,
    A processor connected to the memory and connected to a plurality of nodes in the network;
    With
    The processor is configured to repeat the acquisition process;
    The acquisition process includes
    Determine the scheduled polling time for each node under the scheduled time condition,
    By performing polling according to the scheduled time, a plurality of configuration information respectively stored in the plurality of nodes is obtained,
    Storing the plurality of pieces of configuration information in the memory;
    When two or more pieces of configuration information among the plurality of pieces of configuration information are inconsistent with each other, by polling two or more nodes corresponding to the two or more pieces of configuration information, two or more new pieces of information can be obtained from the two or more nodes. Get configuration information,
    Storing the new two or more pieces of configuration information in the memory;
    Including
    The scheduled time condition is that a time difference between scheduled times of two nodes connected to each other is equal to or less than a preset time difference threshold.
    Management computer.
  2. 　前記プロセッサは、前記繰り返しの前に、初期取得処理を行うように構成されており、
    　前記初期取得処理は、
    　　各ノードに対するポーリングを行うことで、前記複数の構成情報を取得し、
    　　前記複数の構成情報を前記メモリへ格納する、
    ことを含む、
    請求項１に記載の管理計算機。     The processor is configured to perform an initial acquisition process before the iteration,
    The initial acquisition process includes:
    By polling each node, the plurality of configuration information is acquired,
    Storing the plurality of pieces of configuration information in the memory;
    Including that,
    The management computer according to claim 1.
  3. 　各構成情報は、対応するノードのＩＰアドレスと、対応するノードに接続されているノードのＩＰアドレスとを含む、
    請求項２に記載の管理計算機。     Each configuration information includes an IP address of a corresponding node and an IP address of a node connected to the corresponding node.
    The management computer according to claim 2.
  4. 　各ノードから取得される構成情報は、対応するノードが属するサブネットを示すネットワークアドレスを含み、
    　前記取得処理は、
    　　前記複数のノードを、同一のサブネットに属するノードのグループであるサブネットグループに分類し、
    　　各サブネットグループ内のノードに対し、互いに連続する順序の予定時刻を決定する、
    請求項３に記載の管理計算機。     The configuration information acquired from each node includes a network address indicating the subnet to which the corresponding node belongs,
    The acquisition process includes
    Classifying the plurality of nodes into subnet groups that are groups of nodes belonging to the same subnet;
    Determine the scheduled times in a sequential order for the nodes in each subnet group,
    The management computer according to claim 3.
  5. 　各ノードから取得される構成情報は、対応するノードと、対応するノードに接続されているノードとの間の接続プロトコルを含み、
    　前記取得処理は、
    　　各サブネットグループ内のノードを、同一の接続プロトコルを用いるノードのグループである接続グループに分類し、
    　　各接続グループ内のノードに対し、互いに連続する順序の予定時刻を決定する、
    請求項４に記載の管理計算機。     The configuration information acquired from each node includes a connection protocol between the corresponding node and a node connected to the corresponding node,
    The acquisition process includes
    Classify the nodes in each subnet group into connection groups, which are groups of nodes that use the same connection protocol,
    Determine the scheduled times in a sequential order for the nodes in each connection group;
    The management computer according to claim 4.
  6. 　前記取得処理は、互いに接続されている２つのノードに対する予定時刻が前記予定時刻条件を満たさない場合、前記２つのノードのうち第１ノードの予定時刻を、前記２つのノードのうち第２ノードの予定時刻の順序に隣接する順序へ追加する、
    請求項５に記載の管理計算機。     When the scheduled time for two nodes connected to each other does not satisfy the scheduled time condition, the acquisition process determines the scheduled time of the first node of the two nodes and the second node of the two nodes. Add to the order adjacent to the scheduled time order,
    The management computer according to claim 5.
  7. 　互いに隣接する２つの予定時刻の間隔は、予め設定された時間間隔である、
    請求項６に記載の管理計算機。     The interval between two scheduled times adjacent to each other is a preset time interval.
    The management computer according to claim 6.
  8. 　ネットワーク内の複数のノードの管理方法であって、
    　取得処理を繰り返すことを備え、
    　前記取得処理は、
    　　予定時刻条件の下、各ノードに対するポーリングの予定時刻を決定し、
    　　前記予定時刻に従ってポーリングを行うことで、前記複数のノードに夫々格納されている複数の構成情報を取得し、
    　　前記複数の構成情報をメモリへ格納し、
    　　前記複数の構成情報のうち２以上の構成情報が互いに矛盾する場合、前記２以上の構成情報に夫々対応する２以上のノードに対するポーリングを行うことで、前記２以上のノードから新たな２以上の構成情報を夫々取得し、
    　　前記新たな２以上の構成情報を前記メモリへ格納する、
    ことを含み、
    　前記予定時刻条件は、互いに接続されている２つのノードの予定時刻の時間差が、予め設定された時間差閾値よりも小さくなることである、
    管理方法。     A method for managing a plurality of nodes in a network,
    Comprising repeating the acquisition process,
    The acquisition process includes
    Determine the scheduled polling time for each node under the scheduled time condition,
    By performing polling according to the scheduled time, a plurality of configuration information respectively stored in the plurality of nodes is obtained,
    Storing the plurality of pieces of configuration information in a memory;
    When two or more pieces of configuration information among the plurality of pieces of configuration information are inconsistent with each other, by polling two or more nodes corresponding to the two or more pieces of configuration information, two or more new pieces of information can be obtained from the two or more nodes. Get configuration information,
    Storing the new two or more pieces of configuration information in the memory;
    Including
    The scheduled time condition is that a time difference between scheduled times of two nodes connected to each other is smaller than a preset time difference threshold.
    Management method.
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