JPH0253171A - Fault countermeasure system for decentralized system - Google Patents

Abstract

PURPOSE:To extremely reduce the work quantity of a maintenance engineer and at the same time to improve the reliability of a decentralized system by performing the transmission/reception between a central system and the decentralized system for faults to quickly cope with a fault at occurrence of this fault. CONSTITUTION:A decentralized system 1 is one of decentralized systems set dispersedly at each place and can be connected to a central system via a public communication circuit 3. An external storage 11 serving as a 1st memory of the system 1 includes a memory area having the capacity large enough to store the fault situation and stores the fault situation in said memory area when a fault occurs in the system 1. When a fault occurs, an operator inputs the information on the occurrence of the fault to the system 2 via a keyboard 12 serving as an input device of the system 1. Thus a CPU 13 serving as a 1st data processor of the system 1 is connected to the system 2 via the circuit 3 at occurrence of the fault and transmits the information on the fault occurrence supplied via the keyboard 12 to the system 2.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a failure response system for distributed systems, and in particular to several distributed systems installed in various locations and connection to these systems via public communication lines. This invention relates to a failure response method for a distributed system equipped with a central system capable of handling problems.

[Conventional technology]

Figure 3 shows two steps in the failure response method of conventional distributed systems.
3 is a flowchart showing an example of a failure handling procedure.

As shown in Figure 3, in the conventional fault response method for distributed systems, when a fault occurs in a distributed system, first, in step 31, the operator of the distributed system detects that the fault has occurred in some way. The system is discovered and in step 32 a maintenance engineer who is familiar with the distributed system is contacted by telephone or the like, so that in step 33 the maintenance engineer can hear from the operator about the failure situation, mainly the appearance.

However, since the operator generally has limited knowledge of distributed systems and does not know the detailed situation of the failure, in step 34,
Maintenance personnel go to the location where the failure occurred and investigate the failure status of the distributed system.

Then, in step 35, the maintenance staff checks the failure status of the distributed system and takes appropriate measures to deal with device failures and system failures.

[Problem to be solved by the invention]

The conventional fault response method for distributed systems described above is that the operator of the distributed system where the fault has occurred cannot accurately communicate the fault situation, so maintenance personnel from a distant location go to the site and check the fault situation. This has the disadvantage that it takes a long time to troubleshoot the problem.

In addition, because the operator has limited knowledge of distributed systems, the maintenance staff often have to go to the site even when there is no actual failure, resulting in a large amount of wasted work by the maintenance staff. be.

The purpose of the present invention is to significantly reduce the amount of work for maintenance personnel by sending and receiving messages from a central system to and from the distributed system in which the failure occurs when a failure occurs, and thereby to significantly reduce the workload of maintenance personnel. The object of the present invention is to provide a fault response method for a distributed system that can improve condylarity.

[Means to solve the problem]

A failure handling method for a distributed system according to the present invention is a failure handling method for a distributed system comprising a plurality of distributed systems installed in various locations and a central system that can be connected to the distributed systems via a public communication line. (A) a first storage device having a storage area for storing a failure status when a failure occurs; CB) a first input device for inputting a failure occurrence notification to the central system when a failure occurs; (C) a failure occurrence. connects to the central system via a public communication line, transmits the failure occurrence notification input with the first input device, and stores the failure status search information in the first storage device based on the failure status search information received from the central system. searching for the fault status and sending the search results to the central system;
(D) a first data processing device that receives the fault handling method sent from the central system; and (D) a first output device that outputs the fault handling method received by the first data processing device. (E) a second output device that outputs a failure occurrence notification sent from the distributed system and a search result of the failure status sent from the distributed system; (F) a second output device that outputs a failure status search result sent from the distributed system; a second input device for inputting failure situation search information by looking at the failure occurrence notification outputted to the output device; and inputting a failure handling method by looking at the failure situation search results outputted to the second output device; , (G) receiving a failure occurrence notification from the distributed system and passing it to the second output device, transmitting the failure situation search information obtained from the second input device to the distributed system, and transmitting the failure notification from the distributed system to the second output device; a second data processing device that receives a search result of a failure status of the computer and passes it to the second output device, and transmits a failure handling method obtained from the second input device to the distributed system; It is constituted by having.

〔Example〕

Next, embodiments of the present invention will be described with reference to the drawings.

FIG. 1 is a block diagram showing an embodiment of a failure handling method for a distributed system according to the present invention.

As shown in FIG. 1, a distributed system 1 is one of a plurality of distributed systems installed in various locations, and can be connected to a central system 2 via a public communication line 3.

The external storage device 11, which is the first storage device included in the distributed system 1, has a storage area with sufficient capacity to store the failure status when a failure occurs, and the external storage device 11 has a storage area with sufficient capacity to store the failure status when a failure occurs in the distributed system 1. The failure status is saved in .

On the other hand, when a failure occurs, the operator inputs a failure occurrence notification to the central system 2 from the keyboard 12, which is the first input device included in the distributed system 1, in order to notify maintenance personnel.

For this reason, when a failure occurs, the CPU 13, which is the first data processing device included in the distributed system 1, connects to the central system 2 via the public communication line 3 and sends the failure occurrence notification entered on the keyboard 12 to the central system 2. FIG. 2 is an explanatory diagram of information transmitted and received, showing the order of information transmitted and received between the distributed system 1 and the central system 2. As shown in FIG.

As shown in FIG. 2, first, a message M1 notifying the occurrence of a failure is sent from the distributed system 1 to the central system 2.

Therefore, the CPU 21, which is the second data processing device included in the central system 2, receives the failure notification from the distributed system 1 and passes it to the CRT 22, which is one of the second output devices included in the central system 2. There is.

The CRT 22 displays the failure occurrence notification sent from the distributed system 1 to notify maintenance personnel.

Therefore, the maintenance worker inputs failure situation search information from the keyboard 23, which is the second input device included in the central system 2, while viewing the failure occurrence notification displayed on the CRT 22.

Therefore, the CPU 21 transmits the failure status search information obtained from the keyboard 23 to the distributed system 1 via the public communication line 3 as a message M2.

CPU that received failure status search information from central system 2
13 searches the failure status stored in the external storage device 11, and sends the search result of the failure status to the message M3-1.
. . . As M3-n, it is transmitted to the central system 2 as much as necessary.

Therefore, the CPU 21 receives the search results of the failure status from the distributed system 1 and passes them to the CRT 22 and the printer 24, which is another second output device included in the central system 2.

Therefore, the CRT 22 displays the search result of the failure status sent from the distributed system 1, and the printer 24 outputs it to inform the maintenance personnel.

After seeing the search results for these failure situations, the maintenance worker inputs the failure handling method from the keyboard 23.

Therefore, the CPU 21 sends the fault response method input from the keyboard 23 to the distributed system 1 as a message M4.
It will be sent to.

Therefore, the CPU 113 receives the fault handling method sent from the central system 2, displays it on the CRT 14, which is the first output device included in the distributed system 1, to notify the operator, and also receives the fault handling method. The confirmation is sent to the central system 2 as a message M5, and the public communication line 3 is disconnected.

As described above, the fault response method of the distributed system of this embodiment greatly reduces the workload of maintenance personnel by sending and receiving messages from the central system to and from the faulty distributed system when a fault occurs, and quickly responding to the fault. At the same time, it is possible to improve the reliability of the distributed system by quickly responding to failures.

〔Effect of the invention〕

As explained above, the fault response method of the distributed system of the present invention greatly reduces the workload of maintenance personnel by sending and receiving messages from the central system to and from the faulty distributed system when a fault occurs, and promptly responding to the fault. At the same time, it has the effect of improving the reliability of the distributed system by quickly responding to failures.

It is a flowchart which shows an example of order.

1... Distributed system, 2... Old central system, 3... Public communication line, 11... External storage device, 12... Keyboard, 13・Old...
cPU, 14...-CRT, 21...CP
U, 22...CRT, 23...Keyboard, 24...Printer.

Claims (1)

[Scope of Claims] In a failure response method for a distributed system comprising a plurality of distributed systems installed in various locations and a central system that can be connected to the distributed systems via public communication lines, (A) a first storage device having a storage area for storing failure status when a failure occurs; (B) a first input device for inputting a failure notification to the central system when a failure occurs; (C) a public communication line when a failure occurs. connects to the central system, transmits the failure occurrence notification inputted with the first input device, and retrieves the failure status stored in the first storage device using the failure status search information received from the central system. search and send the search results to said central system;
a first data processing device that receives the fault handling method sent from the central system; (D) a first output device that outputs the fault handling method received by the first data processing device; (E) a second output device that outputs a failure occurrence notification sent from the distributed system and a search result of the failure status sent from the distributed system; (F) a second output device that outputs a failure status search result sent from the distributed system; a second input device for inputting failure situation search information by looking at the failure occurrence notification outputted to the output device; and inputting a failure handling method by looking at the failure situation search results outputted to the second output device; , (G) receiving a failure occurrence notification from the distributed system and passing it to the second output device, transmitting the failure situation search information obtained from the second input device to the distributed system, and transmitting the failure notification from the distributed system to the second output device; a second data processing device that receives a search result of a failure status of the computer and passes it to the second output device, and transmits a failure handling method obtained from the second input device to the distributed system; A fault response method for a distributed system characterized by the following.