基于日志信息的故障诊断分析

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1、AbstractInthemoderncomputersystem,logisusuallytobethefirstsourceforobtainingthesystemsituationanddiagnosingthefailureofsystem.However,withthedevelopmentofcloudcomputingandclusterenvironment,thearchitectureofsystemandsoftwareismorecomplicated.Thecommunicatio

2、nbetweendifferentlayerofhardwareandsoftwareinthesystemisbecomingmorefrequency.Itenhancesthecouplingofsystemandmakesfaultdiagnosisusingsystemlogsdifficult.Thetraditionalsystemfaultdiagnosisbasedonlogreliesonartificialanalysis.Itisdifficulttoanalyzesysteminre

3、al-timeandcomprehensive,whendealingwithmassiveloggeneratedbydifferentcomponentsinmodemsystem.Therefore,itisasignificantmeaningforcurrentmanagementofcomputersystemthattodesignalogmanagementandanalysissystem・Theunifiedmanagementandanalysissystemforlog(UiLog)c

4、ollectfaultlogsgeneratedbyeachcomponentofcloudsystemandprovidemanagementandanalysisfunctions.Whenafailureoccurs,UiLogwilldeterminethefaultcatalogandsorttheentirefaultlogsincausalitytohelpadministratorforfaultdiagnosing.Firstly,UiLogmanageallthelogsinthesys

5、temtoensureUiLogcanobtaintheinformationoffault.Secondly,UiLogtakead・vantageofnewfaultclassificationmeasuretoreducethedependencyofhumanknowledgelibrary.ThroughtheFaultKeywordMatrix,UiLogcanclassifyfaultlogefficiency.Ontheotherhand,UiLogimprovesthetraditional

6、faultcorrelationanalysisbasedontime.Usingtheresultoffaultclassificationtodeterminethesizeoftimewindows,itcanimproveaccuracyoffaultclassificationandhelpadministratorforfindingtherootcauseoffault.TheresultofevaluationshowsthatUiLogcanmanagelogsofentiresystem

7、andclassifylogsbyfaulttype.Meanwhile,UiLogalsocanfindroot-causeoffault.Forlogclassification,thenewapproachimprovestheaccuracyoffaultclassificationto95%.Forlogcorrelation,thetruncationfaultrateandcollisionfaultratedeclinesto20%and30%respectively.Keywords:

8、Faultdiagnosis,Logclassification,FaultcorrelationanalysisABSTRACT目录1绪论1.2国内外研究现状1.3课题背景与研究内容1.4文章组织结构2日志综合管理分析系统的相关技术基础2.1日志文件的结构2.2基于日志的故障分类技术2.3本章小结3日志综合管理分析系统设计3.1日志综合管理分析系统设计目标3.2FI志综合管理分析系统体系结构III