04volipWord格式文档下载.docx
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04volipWord格式文档下载.docx
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AlternativeMethodstoCreateResourceHierarchy8
ExtendingaVolumeResourceHierarchy8
AftertheVolumeResourceisCreated9
SwitchoverVolumeResource(InService)9
EditMenu9
RightClickonVolumeResource10
Toolbar10
BringingResourceOutofService10
VolumeConsiderationsDuringManualSwitchover10
VolumeRemoveStop/RestartProgramsandServices11
VolumeRestoreStop/RestartProgramsandServices14
IPResources15
Overview15
IPRecoveryKitSetup16
NetworkConfiguration16
IPResourceforProtection16
Example16
CreatinganIPResourceHierarchy17
ExtendingtheIPResourceHierarchy19
IPSwitchover21
IPFailover21
IPLocalRecovery22
ConfigurationExample22
ReviewExercises24
Module4LabExercises25
Purpose
Thismoduleprovidesproceduresforcreating,extendingandmonitoringbothVolumeandIPresources.Configurationissueswillbediscussedinadditiontoswitchingresourcesbetweenservers.
Objectives
Wehavecompletedthefollowing:
∙PlannedtheLifeKeeperclusterconfiguration
∙Configuredthehardware,includingsharedstorage
∙InstalledandstartedLifeKeeper
∙DefinedTCP/IP,TTYandSharedDiskcommpaths
∙ConfiguredtheGUItorunonaremotesystem
Inthismodule,wewilladdthefollowing:
∙CreateaVolumeResource
∙CreateanIPresource
∙Switchoverresourcestoabackupserver
∙ConfigureIPlocalrecovery
Overview
TheCoreRecoveryKitsprovideallfaultdetectionandrecoverymechanismsandthedefinitionsnecessarytoprovideLifeKeeperprotectionforvolumes(driveletters),filesharesandcommunicationsresources.
∙Volumeresourcetype.Allowsyoutocreatearesourcetoprotectanentireshareddrive(forinstance,theK:
drive).
∙IPRecoveryKit.Providesamechanismtorecovera"
switchable"
IPaddressfromafailedprimaryservertooneormorebackupserversinaLifeKeeperenvironment.AswitchableIPaddressisavirtualIPaddressthatcanswitchbetweenserversandisseparatefromtheIPaddressassociatedwiththenetworkinterfacecardofeachserver.
ApplicationsunderLifeKeeperprotectionareassociatedwiththeswitchableIPaddress,soifthereisafailureontheprimaryserver,theswitchableIPaddressbecomesassociatedwiththebackupserver.
ThiskitalsoprovideslocalrecoveryoftheIPresource.
∙LANManagerRecoveryKit.EnablesautomaticrecoveryofthecomputeraliasnameandWindowsfilesharelists.TheLANManagerresourceletsyoucreatea"
computernameforapplicationsthatcommunicatewiththeserverviaNetBEUI,orsystemname.(TheLANManagerandfileshareresourceswillbecoveredinModule5.)
VolumeResources
PrerequisiteTasks
WhenprotectingresourcesonsharedSCSIdisks,youmustfirstpartitiontheshareddiskintologicalvolumes(designatedbyadriveletter)usingtheWindowsDiskManagementtool.Thelogicalmappingofthedrives(driveletters)mustbethesameonallsystemsintheclusterorgrouping.
ThenuseLifeKeepertoprotectthesharedvolumebydefiningavolumeresourceinstance.
VolumeLocking
LifeKeeperbringsthevolumeresourceinstanceintoserviceontheprimaryserverandprovidessoftwarelockssothattheotherserverscannotaccessthevolumewhileitisactiveontheprimaryserver.Incaseofafailureoftheprimaryserver,LifeKeeperautomaticallybringsthevolumeresourceintoserviceonabackupserver.Thesebackupserversareprioritizedintheordertheirresourceinstancewascreatedorextended.
LifeKeeperalsoautomaticallychangestheprimaryandbackupdesignationssothatthefailedserverisnowpreventedaccesstothevolumeresource.Inthisway,theresourceisprotectedfrominappropriateaccesswhilethefailedserverisbeingrepaired
ThisdynamicredefinitionofprimaryandbackupisLifeKeeper’sintelligentswitchbackfeaturethatallowsyoutoselecttheappropriatetimetobringtheresourcebackintoserviceontherepairedserver.
Note
IfLifeKeeperisstoppedmanually,thesoftwarelocksarenolongerineffect.Thisisadangerouscondition,asthefilesystemcanbedamagedbyaccessfrombothnodessimultaneously
CreatingaVolume
Hierarchy
1.OntheEditmenu,selectResource,thenCreateResourceHierarchy.AdialogboxentitledCreateResourceWizardwillappearwithalistofallrecognizedrecoverykitsinstalledwithinthecluster.
2.SelectVolumeandpressNEXT.
3.TheCreateResourceWizardwillpromptyoutoenterthefollowinginformation.WhentheBackbuttonisactiveinanyofthedialogboxes,youcangobacktothepreviousdialogbox.Thisisespeciallyhelpfulshouldyouencounteranerrorthatmightrequireyoutocorrectpreviouslyenteredinformation.IfyouclickCancelatanytimeduringthesequenceofcreatingyourhierarchy,LifeKeeperwillcanceltheentirecreationprocess.
Field
Tips
SwitchbackType
DictateswhatLifeKeeperwilldowiththisvolumeinstanceafterafailovertothebackupserver.
•Intelligent(default)–resourcestaysonbackupserveruntilmanually(intelligently)switchedback
•Automatic–assoonasoriginalserverisavailableagain,theresourceisautomaticallyswitchedbackfromthebackupserver
SwitchbacktypecanbechangedlaterfromResourcePropertiesdialog.
Server
SelecttheServeronwhichyouwanttocreatethehierarchy,andclickNext.
Volume
Selectthedriveletteridentifyingthevolumetobeprotected.
VolumeType
SelectSCSIifusingsharedstorage,orEMifusingExtendedMirroring.
Quickcheck
Entertheinterval(inminutes)betweenbasicchecksoftheresource'
savailability.Differentvaluescanbespecifiedforeachsystem.
Defaultvalueis3minutes.Valuecanbebetween0to10080.Settingintervalvalueto0willdisabletheQuickcheck.
Deepcheck
Entertheinterval(inminutes)betweenextensivechecksoftheresource'
Thedefaultvalueis5minutes.Valuecanbebetween0to10080.Settingintervalvalueto0willdisablethequickcheck.
4.ClickCreate.YouwillthenseeamessagethatLifeKeeperiscreatingthevolumeresource.
5.Afterreceivingthemessagethatthevolumehasbeencreatedsuccessfully,clickNext.
6.Atthispoint,youcanclickContinuetoextendthevolumeresourcehierarchy,oryoucanclickCanceltoreturntotheGUI.IfyouclickCancel,youwillreceiveawarningmessagethatyourhierarchyexistsononlyoneserver,anditisnotprotectedatthispoint.
AlternativeMethodstoCreateResourceHierarchy
InadditiontousingtheEditmenu,youcandothefollowing:
∙Right-clickontheresource,andchooseCreateResourceHierarchyfromthepopupmenu.
∙ClicktheCreateResourceHierarchyicon
onthetoolbar.
ExtendingaVolume
ResourceHierarchy
TheextendoperationiscalleddirectlyfromthecreateoperationifyouclickContinue.(ItcanalsobestartedfromtheEditmenu.)
7.First,thePre-ExtendWizardappears.TheAcceptDefaultsbuttonthatisavailableforthisoperationisintendedfortheuserwhoisfamiliarwiththeLifeKeeperExtendResourceHierarchydefaults,andwantstoquicklyextendaLifeKeeperresourcehierarchywithoutbeingpromptedforinputorconfirmation.UserswhoprefertoextendaLifeKeeperresourcehierarchyusingtheinteractive,step-by-stepinterfaceoftheGUIdialogsshouldusetheNextbutton.
Targetserver
Enterorselecttheserveryouareextendingto.
SeetheCreatingaVolumeHierarchyfordefinitionofSwitchbackType.
TargetPriority
Enteranumberbetween1and999tospecifythetargetserver'
spriorityinthecascadingfailoversequenceforthisresource.Alowernumbermeansahigherpriority.LifeKeeperassignsthenumber1totheserverthehierarchywascreatedon.Notwoserverscanhavethesamepriorityforagivenresource.
8.Afterreceivingthemessagethatthepre-extendchecksweresuccessful,clickNext.
9.LifeKeeperwilldisplayaninformationboxshowing
theTemplateServer,TagtoExtend,TargetServerandVolumeTag,whichisnoteditable.ClickNext.
10.Afterreceivingthemessage"
Hierarchyextendoperationscompleted"
clickNextServertoextendthehierarchytoanotherserver,orclickFinishiftherearenootherextendoperationstoperform.
AftertheVolumeResource
isCreated
AfteraLifeKeepervolumeiscreatedordeleted,thefollowingcommand
isexecutedforthenewlistofLifeKeeperprotectedvolume:
chkntfs/x<
vol_1>
<
vol_2>
...<
vol_n>
ThisWindows2000commandexcludesthevolumeslistedfrombeingcheckedbychkdskatsystemstartup.ThisisrequiredforLifeKeeperprotectedvolumessothattheywillnotbeaccessed-particularlyonbackupsystems-beforeLifeKeeperhasachancetostart.IfnoLifeKeepervolumesremain,chkntfs/disexecutedtorestoretheWindowsdefaultsettings.
Caution:
Thechkntfs/xcommanddoesnotrememberpreviousvolumesitwasappliedto,soifauserexecutesthiscommand,itcoulddisabletheLifeKeepersettings,(andlikewise,LifeKeepercouldsubsequentlyoverridetheuser’ssettings).
Ifyouwishtoexcludeanon-LifeKeepervolumefromcheckingatstartup,youshouldalsoincludealltheLifeKeepervolumesinthechkntfs/xcommand.
SwitchoverVolume
Resource(InService)
TheVolumeresourcehasnowbeencreatedontheprimaryserverandextendedtothebackupserver.ItisInServiceandprotected(ISP).
YoucanmanuallyswitchoverthevolumeresourcebybringingitInServiceon
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