網(wǎng)絡(luò)管理與工具OpenView文件與處理過程概述網(wǎng)絡(luò)管理與工具OpenView文件與處理過程概述網(wǎng)絡(luò)管理與工具OpenView文件與處理過程概述Atstartupovstart,ovspmdovstartStartthevariousprocesses(daemon)Atfirst,checkifovspmdisrunning,ifovspmdisnotrunning,startsovspmd

Whenyourebootthesystem,bootscriptautomaticallyexecuteovstartEx)Solaris2.X/etc/init.d/netmgtovspmdMaintainsacommunicationchannelforrequestfromovstartSendstatusresponsestoovstartStartsbackgroundprocesses,pmd,ovwdb,ovactiond,snmpCollect,ovtopmd,ovrepld,ovlmd,ovtrapdandnetmonaccordingtothestart-upconfigurationfileovsufEachprocessisachildofovspmdandmustrununderthecontrolofovspmdTheovspmdprocessmaintainsacommunicationchannelwitheachprocessTheovspmdusesthischanneltosendcommandstotheprocessesandtoreceivestatusresponsesfromthem$OV_CONF/ovsufContainstheconfigurationinformationforovspmdEachentryinovsufiscreatedbyovaddobjfrominformatonintheLRF(LocalRegistrationFile).ThereisatleastoneLRFforeachofthebackgroundprocessesovsufexample1:ovwdb:ovwdb:OVs_YES_START::-O:OVs_WELL_BEHAVED:15:PAUSE::0:pmd:pmd:OVs_YES_START:::OVs_WELL_BEHAVED:15:PAUSE::LRFexample#@(#)netmon.lrfnetmon:netmon:OVs_YES_START:ovtopmd,pmd,ovwdb:-P-ksegRedux=true:OVs_WELL_BEHAVED:15:PAUSE::Duringoperation(Part1)Duringoperation(Part2)BackgroundProcesses(1)netmonPollsSNMPagentstoinitiallydiscovernetworktopologyDetectstopology,configurationandstatuschangesinthenetworkUsesa“seedfile”containingalistofnodestodefinetheinitialmanagementregionUsestheoid_to_typeandHPoid2typefiletodeterminecorrectIPtopologybehaviorandcorrectvendorandSNMPagentvalueoid_to_typeexample1.3.6.1.4.1.4.1.1:MicroTechnology:MTLANCE/NMSagentHPoid2type1.3.6.1.4.1.11.2.3.4.1:Hewlett-Packard:HP3000/XL:6BackgroundProcesses(2)ovtopmdMaintainsthenetworktopologydatabaseThetopologydatabaseisasetoffilesinthe$OV_DB/openview/topoInitiallyreadsit,ifnonexist,createandpopulateitControlsandupdatesthetopologydatabaseoninformationfromnetmonindicatingthatchangeshaveoccurredDatabasefiles:binaryfileformatIninfo.dir,ininfo.pag,netinfo.dir,netinfo.pag,nodeinfo.dir,nodeinfo.pagSeginfo.dir,seginfo.pag,stationinfo.dir,stationinfo.pag,topoinfo.dir,topoinfo.pagBackgroundProcesses(3)ovwdbControlstheobjectdatabaseTheobjectdatabasestoresinformationabouttheobjectthatNNMusesfordescribeoperationsovwdb

mustberunningforNMtoworkpmdReceivesandforwardseventsLogseventstothefiles$OV_LOG/trapd.logand$OV_LOG/trapd.log.oldForwardseventsfromthenetworkontootherapplicationsthathaveconnectedtopmdusingtheSNMPAPIovtrapdReceivesSNMPtrapsandforwardsthemtopmd

RespondstoSNMPv2informrequestsBackgroundProcesses(4)ovactiondReceiveseventsfrompmdExecutescommandsbytrapd.conftrapd.confEx)CATEGORY0"IGNORE""IGNORE“ACTION60"PrintAlarms"printEventsSDESCOID_ALIASsnmpTraps.1.3.6.1.6.3.1.1.5…..snmpCollectCollectsMIBdataandstorethedatainthe$OV_DB/snmpCollectdirectoryPerformthresholdmonitoringandsendsthresholdeventstopmd

OvlmdCoordinatescommunicationbetweenthelicenseserverandtheNNMOvrepldResponsibleforobjectreplicationForegroundProcesses(1)ovwProvidesmapdrawing,mapeditingandmenumanagementipmapRunsunderovwtoautomaticallydrawIPtopologymapsrepresentingnetworkxnmeventsDisplayeventsthatarebeingreceivedbypmdxnmtrapTheprocessisinvokedbytheOption:EventConfigurationmenuDefineenterprise-specificevents(traps)YoucancustomizethemessagedisplayedwhenaparticulareventarrivesYoucanspecifyacommandorascriptthatshouldbeexecutedwhenaparticulareventarriveForegroundProcesses(2)xnmsnmpconfTheprocessisinvokedbytheOption:SNMPConfigurationmenuYoucanadd,deleteandmodifySNMPconfigurationparameter(communityname,numberofretries,etc.)Youcanchangethenetmonstatuspollingintervalxnmloadminb

TheprocessisinvokedbytheOption:Load/UnloadMINs:SNMPmenuLoadnewInternet-standardorenterprise-specificMIBsintotheloadedMIBdatabasexnmbrowserTheprocessisinvokedbytheMisc:SNMPMIBBrowsermenuGetandsetMIBvaluesforMIBobjectsxnmcollect

TheprocessisinvokedbytheOptions:DataCollection&Thresholds:SNMPmenuConfigurethemanagertocollectMIBdatafromnetworkobjectatregularintervalsForegroundProcesses(3)xnmbuilderTheprocessisinvokedbytheOptions:MIBApplicationBuilder:SNMPmenuBuildcustomscreenstomanagemulti-vendorMIBobjectsxnmgraphGraphtheresultsofmonitoringoperationsformanagedSNMPobjectsxnmappmonDisplaystextualresultsofmonitoringoperationsformanagedSNMPobjectsxnmpollingTheprocessisinvokedbytheOptions:NetworkPollingConfiguration:IPmenuUpdatesthepollingconfigurationmibform,mibtable,rnetstat,findroute,rdbf,rpingMonitoranddiagnoseproblemsinTCP/IPnetworkDatabasesTheMapDatabasePresentationinformationpermapExactsymbolplacement,symbolassociationwitheachobjectandsymbollabelsTheObjectDatabaseGlobalobjectinformationsysObjectId,vendorandSNMPAgentTheTopologyDatabaseTopologyinformationandlayoutMuchofinformationofobjectdatabaseisduplicatedin