KR20060008891A - 분산 웹 서비스 컨텍스트에서 자발적인 장애 극복 - Google Patents
분산 웹 서비스 컨텍스트에서 자발적인 장애 극복 Download PDFInfo
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- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
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- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
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- H04L67/10—Protocols in which an application is distributed across nodes in the network
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- H04L67/1034—Reaction to server failures by a load balancer
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- G06F11/20—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements
- G06F11/202—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant
- G06F11/2035—Error detection or correction of the data by redundancy in hardware using active fault-masking, e.g. by switching out faulty elements or by switching in spare elements where processing functionality is redundant without idle spare hardware
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- G—PHYSICS
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- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
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- G06F11/34—Recording or statistical evaluation of computer activity, e.g. of down time, of input/output operation ; Recording or statistical evaluation of user activity, e.g. usability assessment
- G06F11/3466—Performance evaluation by tracing or monitoring
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Abstract
Description
Claims (10)
- 자발적인 장애 극복(autonomic failover)을 위한 방법에 있어서,노드에 있는 서비스 인스턴스들(service instances)에 대한 메트릭(metrics)을 수집하는 단계;상기 노드에서 장애를 검출하는 단계;상기 장애가 검출되는 경우, 대체 노드들 셋트의 위치를 찾고, 상기 대체 노드들 각각에 대해 플랫폼 메트릭(platform metrics)을 결정하는 단계; 및상기 수집된 메트릭 및 상기 플랫폼 메트릭에 기초하여 상기 대체 노드들 중 최적으로 선택된 대체 노드들 내에 새로운 대체 서비스 인스턴스들을 생성하는 단계를 포함하는 자발적인 장애 극복 방법.
- 제1항에 있어서, 상기 메트릭은 격자 호스트(grid host)에서 소모되는 자원들, 바람직한 운영체제 플랫폼(preferred operating system platform), 격자 호스트에서 요구되는 최소의 자원들, 격자 호스트에서 소모하는데 이용가능한 바람직한 자원들로 이루어진 그룹으로부터 선택된 적어도 하나의 메트릭을 포함하는 자발적인 장애 극복 방법.
- 제2항에 있어서, 상기 메트릭은 단위 성능당 비용(cost per unit of performane), 단위 자원 소모당 비용, 단위 성능당 수익 및 단위 자원 소모당 수익으로 이루어진 그룹으로부터 선택된 적어도 하나의 메트릭을 더 포함하는 자발적인 장애 극복 방법.
- 제1항에 있어서, 상기 생성 단계는,상기 새로운 대체 서비스 인스턴스들이 생성되는 최적 대체 노드를 식별하기 위하여 상기 수집된 메트릭 및 상기 플랫폼 메트릭 간에 최적합 분석(best-fit analysis)을 수행하는 단계; 및상기 식별된 최적의 대체 노드 내에 상기 새로운 대체 서비스 인스턴스들을 생성하는 단계를 포함하는 자발적인 장애 극복 방법.
- 제1항에 있어서, 상기 생성 단계는,상기 최적의 대체 노드에 있는 기존의 서비스 인스턴스들에 대한 메트릭을 추가적으로 수집하는 단계;상기 수집된 메트릭 및 추가적으로 수집된 메트릭 양자에 대해 상기 최적의 대체 노드에 대한 플랫폼 메트릭과의 최적합 분석을 수행하는 단계;상기 기존의 서비스 인스턴스들의 부분과 공존하도록 상기 최적의 대체 노드 내에 상기 새로운 대체 서비스 인스턴스들의 셋트를 생성하는 단계- 상기 최적의 대체 노드 내에서는 상기 새로운 대체 서비스 인스턴스들의 셋트와 상기 기존의 서비스 인스턴스들의 부분이 최적으로 결합되도록 계산됨 -; 및상기 기존의 서비스 인스턴스들 중 다른 것들을 다른 대체 노드들로 옮기고, 상기 다른 대체 노드들 내에 상기 새로운 대체 서비스 인스턴스들 중 나머지 셋트를 생성하는 단계를 포함하는 자발적인 장애 극복 방법.
- 제3항에 있어서, 상기 생성 단계는,상기 최적의 대체 노드에 있는 기존의 서비스 인스턴스들에 대한 메트릭을 추가적으로 수집하는 단계;단위 성능당 비용, 단위 자원 소모당 비용, 단위 성능당 수익 및 단위 자원 소모당 수익으로 이루어진 그룹으로부터 선택된 적어도 하나의 메트릭에 가중치를 부여하면서, 상기 수집된 메트릭 및 추가적으로 수집된 메트릭 양자에 대하여, 상기 최적의 대체 노드에 대한 플랫폼 메트릭과의 최적합 분석을 수행하는 단계;상기 기존의 서비스 인스턴스들의 부분과 공존하도록 상기 최적의 대체 노드 내에 상기 새로운 대체 서비스 인스턴스들의 셋트를 생성하는 단계- 상기 가중치 부여된 적어도 하나의 메트릭에 따라, 상기 최적의 대체 노드 내에서 상기 새로운 대체 서비스 인스턴스들의 셋트와 상기 기존의 서비스 인스턴스들의 부분이 최적으로 결합되도록 계산됨 -; 및상기 기존의 서비스 인스턴스들 중 다른 것들을 다른 대체 노드들로 옮기고, 상기 다른 대체 노드들 내에 상기 새로운 대체 서비스 인스턴스들 중 나머지 셋트를 생성하는 단계를 포함하는 자발적인 장애 극복 방법.
- 격자 조정기(grid coordinator)에 있어서,서비스 격자 내에 복수의 격자 호스트와 통신으로 링크되는(communicatively linked) 감시부(monitor);상기 감시부에 연결되고 상기 격자 호스트들에 있는 개개의 서비스 인스턴스들에 대한 서비스 메트릭을 저장하도록 구성된 메트릭 저장소;장애 격자 호스트에 있는 서비스 인스턴스들의 셋트에 대해 저장된 메트릭 및 제안된 대체 격자 호스트에 대해 결정된 플랫폼 메트릭 간에 최적합을 계산하도록 프로그램된 최적화 로직(optimization logic); 및상기 감시부와 최적화 로직에 연결되고, 상기 격자 호스트들에 통신으로 링크되는 장애 극복 프로세서(failover processor)로서, 상기 최적화 로직에서 계산된 상기 최적합에 따라 상기 장애 격자 호스트에 있는 상기 서비스 인스턴스들을 대체하기 위해서, 상기 제안된 대체 격자 호스트에 새로운 서비스 인스턴스들의 셋트를 생성하는 장애 극복 프로세서를 포함하는 격자 조정기.
- 제7항에 있어서, 상기 감시부는 상기 격자 호스트 내에 배치된 복수의 협동 감시 프로세스(plurality of cooperative monitoring processses)를 포함하고, 상기 협동 감시 프로세스 각각은 해당 격자 호스트의 상태를 상기 장애 극복 프로세서로 보고하기 위한 구성을 갖는 격자 조정기.
- 자발적인 장애 극복을 관리하기 위한 컴퓨터 프로그램을 저장한 머신 판독가능 저장소(machine readable storage)에 있어서, 상기 컴퓨터 프로그램은 머신으로 하여금,노드에 있는 서비스 인스턴스들에 대한 메트릭을 수집하는 단계;상기 노드에서 장애를 검출하는 단계;상기 장애가 검출되는 경우, 대체 노드들 셋트의 위치를 찾고, 상기 대체 노드들 각각에 대해 플랫폼 메트릭을 결정하는 단계; 및상기 수집된 메트릭 및 상기 플랫폼 메트릭에 기초하여 상기 대체 노드들 중 최적으로 선택된 노드 내에 새로운 대체 서비스 인스턴스들을 생성하는 단계를 포함하는 단계들을 수행하도록 유발하기 위한 명령어들의 루틴셋트(routine set of instructions)를 포함하는 머신 판독가능 저장소.
- 컴퓨터 상에서 실행되는 경우, 제1항 내지 제6항 중 어느 한 항의 방법을 수행하기 위하여 적응적으로 변경된 프로그램 코드 수단을 포함하는 컴퓨터 프로그램.
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US10/438,434 US7287179B2 (en) | 2003-05-15 | 2003-05-15 | Autonomic failover of grid-based services |
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KR101447024B1 (ko) * | 2013-03-20 | 2014-10-07 | 국방과학연구소 | 서비스 기반의 무기체계용 분산식 다계층 시스템의 고장 복구 방법 |
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CN100514306C (zh) | 2009-07-15 |
TW200501691A (en) | 2005-01-01 |
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