VMware HADRS Configuration SOP.docx

VMware HADRS Configuration SOP.docx

《VMware HADRS Configuration SOP.docx》由会员分享，可在线阅读，更多相关《VMware HADRS Configuration SOP.docx（8页珍藏版）》请在冰豆网上搜索。

VMwareHADRSConfigurationSOP

VMwareVI3ESX3.5,VC2.5

VMwareHA&DRSConfigurationSOP

Author:

TedKao

Date:

2009.4.8

Version:

1.2

CreatingaCluster

Tostarttheclusterwizard

1Right‐clickthedatacenterorfolderandchooseNewCluster.

2Chooseclustersettingsaspromptedbythewizard.

ChoosingClusterFeatures

ThefirstpanelintheNewClusterwizardallowsyoutospecifythefollowinginformation:

􀂄Name—Specifiesthenameofthecluster.ThisnameappearsintheVIClientinventorypanel.Youmustspecifyanametocontinuewithclustercreation.

􀂄EnableVMwareHA—Ifthisboxisselected,VirtualCenterrestartsrunningvirtualmachinesonadifferenthostwhenthesourcehostfails.

􀂄EnableVMwareDRS—Ifthisboxisselected,DRSusesloaddistributioninformationforinitialplacementandloadbalancingrecommendationsortoplaceandmigratevirtualmachinesautomatically.

AddingManagedHoststoaCluster

TheVirtualCenterinventorypaneldisplaysallclustersandallhostsmanagedbythatVirtualCenterServer.

Toaddamanagedhosttoacluster

1Selectthehostfromeithertheinventoryorlistview.

2Dragthehosttothetargetclusterobject.

3Thewizardaskswhatyouwanttodowiththehost’svirtualmachines

andresourcepools.

􀂄IfyouchoosePutthishost’svirtualmachinesinthecluster’sroot

resourcepool,VirtualCenterremovesallexistingresourcepoolsof

thehostandthevirtualmachinesinthehost’shierarchyareall

attachedtotheroot.

􀂄IfyouchooseCreateanewresourcepoolforthishost’svirtual

machinesandresourcepools,VirtualCentercreatesatop‐level

resourcepoolthatbecomesadirectchildoftheclusterandaddsall

childrenofthehosttothatnewresourcepool.Youcansupplya

nameforthatnewtop‐levelresourcepool.

FailoverCapacity

WhenyouenableaclusterforHA,theNewClusterwizardpromptsyouforthenumberofhostsforwhichyouwantfailovercapacity.ThisnumberisshownastheConfiguredFailoverCapacityintheVIClient.HAusesthisnumbertodetermineifthereareenoughresourcestopoweronvirtualmachinesinthecluster.

VMwareHAOptions

OptionDescription

AdmissionInthisboxyoucanspecifythefailovercapacityandControlenableordisableadmissioncontrol,whichisbasedonthatnumber.

Numberofhostfailurestheclustercantolerate—Specifiesthefailovercapacity,thenumberofhostfailuresforwhichyouwanttoguaranteefailover.

YoucantheneitherenableordisableHAAdmissionControl.Thetwochoicesare:

􀂄Donotpoweronvirtualmachinesiftheyviolateavailabilityconstraints.Thisoptionpreventsvirtualmachinesfrombeingpoweredoniftheyexceedthefailovercapacity.

􀂄Allowvirtualmachinestobepoweredoneveniftheyviolateavailabilityconstraints.Virtualmachinesarepermittedtopoweron,eveniftheyexceedthefailovercapacity.

VMwareHAOptions（Continued）

OptionDescription

VMRestartDeterminestheorderinwhichvirtualmachinesarePriorityrestarteduponhostfailure.Valuesare:

Disabled,Low,Medium,High.ThedefaultisMedium.IfDisabledisselected,HAisdisabledforthevirtualmachines.Thisisadefaultsettingforthecluster.Youcancustomizethis

propertyforindividualvirtualmachines.

HostIsolationDetermineswhathappenswhenahostinanHAclusterResponselosesitsconsolenetworkconnectionbutcontinuesrunning.Valuesare:

LeaveVMpoweredon（thedefault）,PoweroffVM,andShutdownVM.Thisisadefaultsettingforthecluster.Youcancustomizethispropertyforindividualvirtualmachines.

VirtualMachineTheMonitoringsensitivitysettingdeterminestheMonitoringfailureintervalafterwhichavirtualmachineisrestartedifitsheartbeatisnotreceivedbythehost.

SelectingaVirtualMachineSwapfileLocation

Thiswizardpageallowsyoutoselectalocationfortheswapfilesofyourvirtualmachines.Youcaneitherstoreaswapfileinthesamedirectoryasthevirtualmachineitself,oradatastorespecifiedbythehost（host‐localswap）.

SelectingAutomationLevel

IfyouselectedtheEnableVMwareDRSoptioninthesecondpanelofthewizard,theVMwareDRSpanelallowsyoutoselectthedefaultlevelofautomation.

DRSAutomationLevels

InitialPlacementMigration

ManualDisplayofrecommendedMigrationrecommendationishost（s）.displayed.

PartiallyAutomaticplacement.MigrationrecommendationisAutomateddisplayed.

FullyAutomaticplacement.MigrationrecommendationsAutomatedareexecutedautomatically.

MigrationThreshold

Themigrationthresholdallowsyoutospecifywhichrecommendationsareappliedwhentheclusterisinfullyautomatedmode.Youcanmovetheslidertouseoneoffivelevels,rangingfrom“Conservative,”whichmakesthesmallestnumberofmigrations,to“Aggressive,”whichmakesthelargestnumberofmigrations.Thefivemigrationlevelsapplyrecommendationsbasedontheirassignedstarratings.

ViewingClusterInformation

TheclusterSummarypagedisplayssummaryinformationforthecluster.

ClusterSummaryTab

ClusterSummaryInformation

PanelDescription

GeneralIncludesinformationaboutthecluster:

VMwareDRS—EnabledorDisabled.

VMwareHA—EnabledorDisabled.

TotalCPUResources—TotalCPUresourcesavailableforthecluster.Thesumofallresourcesavailablefromthehosts.

TotalMemory—Totalmemoryforthecluster.Thesumofallresourcesavailablefromthehosts.

NumberofHosts—Numberofhostsinthecluster.Thisnumbercanchangeifyouaddorremovehosts.

TotalProcessors—Sumofallprocessorsofallhosts.

NumberofVirtualMachines—Totalofallvirtualmachinesintheclusteroranyofitschildresourcepools.Includesvirtualmachinesthatarenotcurrentlypoweredon.

TotalMigrations—TotalmigrationsperformedbyDRSorbytheusersincetheclusterwascreated.

CommandsAllowsyoutocallcommonlyusedcommandsforacluster.

NewVirtualMachine—DisplaysaNewVirtualMachinewizard.Thewizardpromptsyoutochooseoneofthehostsinthecluster.

AddHost—AddsahostnotcurrentlymanagedbythesameVirtualCenterServer.ToaddahostmanagedbythesameVirtualCenterServer,draganddropthehostintheinventorypanel.

NewResourcePool—Createsachildresourcepoolofthecluster.

EditSettings—Displaysthecluster’sEditSettingsdialogbox.

ClusterSummaryInformation（Continued）

PanelDescription

VMwareHADisplaystheadmissioncontrolsetting,currentfailovercapacity,andconfiguredfailovercapacityforclustersenabledforHA.

Thesystemupdatesthecurrentfailovercapacitywheneverahosthasbeenaddedtoorremovedfromtheclusterorwhenvirtualmachineshavebeenpoweredonorpoweredoff.

VMwareDRSDisplaysthedefaultautomationlevel,migrationthreshold,andoutstandingmigrationrecommendationsforthecluster.

MigrationrecommendationsappearifyouselecttheDRSRecommendationstab.

Defaultautomationlevelandmigrationthresholdaresetduringclustercreation.

DRSResourceDisplaystworeal‐timehistograms,UtilizationPercentDistributionandPercentofEntitledResourcesDelivered.Thechartsillustratehowbalancedaclusteris.