02install.docx
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02install.docx
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02install
LifeKeeperforWindows2000
Module2
Installation
TableofContents
TableofContents2
LifeKeeperInstallation3
Purpose3
Objectives3
PlanningtheLifeKeeperEnvironment4
GeneralConsiderations4
BasicConfigurationRequirements5
SharedSCSIDiskArrays5
SettingUptheLifeKeeperEnvironment7
HardwareInstallationOverview7
Installation-StepbyStep8
1.Verifyserverspecifications.8
2.Createconfigurationmap8
3.SetupandTestCommunicationsPaths9
4.DeterminePackageandKitRequirements11
5.DetermineSharedResourceRequirements13
6.DetermineSCSIHostAdapterRequirements13
7.ConnectServersandPeripherals14
SoftwareInstall,Reinstall,andUninstall15
BeforeInstalling15
InstallSoftware15
ReinstallSoftware17
UninstallSoftware18
StartingandStoppingLifeKeeper19
LifeKeeperServices19
TheLifeKeeperGUI19
ConnectingtoaServer20
LoggingIn21
ReviewExercises22
LabExercises23
SystemConfigurationDiagramWorksheet27
LifeKeeperInstallation
Purpose
ThismodulewillfamiliarizethestudentwiththepreparationandproceduresinvolvedwiththeinstallationofLifeKeeper.Itprovidesadescriptionoftheinstallationofthehardware,aswellastheprocedurestoinstall,reinstall,anduninstalltheLifeKeepersoftware.
Objectives
Atthecompletionofthismodulethestudentwillbeableto:
∙ListitemstoconsiderbeforeinstallingaLifeKeepersystem
∙ListtherequirementsforasuccessfulLifeKeeperinstallation
∙InstallboththeLifeKeeperhardwareandsoftware
∙SetuptheLifeKeepercommunicationpaths(serialandsocket)
∙Verifytheoperationofthecommunicationpaths
∙Install,reinstall,anduninstalltheLifeKeepersoftware
PlanningtheLifeKeeperEnvironment
General
Considerations
BecauseLifeKeeperprovidesapplicationavailabilityapproachingthatobtainedfromafault-tolerantsystem,somethoughtshouldbegiventothephysicalandelectricalplacementofsystemsandsystemcomponents.Inparticular,considertheconsequencesofapartiallossofelectricalpower.
∙MakeuseofanUninterruptiblePowerSupply(UPS).
∙IfaUPSwillnotbeused,considerinstallingeachsystemonaseparateelectricalfeed,includingsharedstorage.
Sincethestrength(orthefault-resilience)ofasystemisonlyasstrongastheweakestlink,itisimportanttominimizeriskateachsystemcomponentlevel.
∙Makeuseofdiskmirroringand/orRAID(RedundantArrayofInexpensiveDisks)technology.
EnsurethatthehardwareconfigurationsupportsLifeKeeperprocessingbeforeinstallingtheLifeKeepersoftware,beginningtodefinecommunicationspaths,andconfiguringresourcesandhierarchies.
NOTE
FormoreinformationonLifeKeeperconfigurationrequirements,consulttheLifeKeeperPlanningandInstallationGuide.
BasicConfigurationRequirements
TheinstallationofLifeKeeperdoesnot,byitself,provideapplicationfault-resilience.Theapplicationmustbeinstalled,configuredintoLifeKeeper,andreadytorunonboththeprimaryandthesecondarysystem.Iftheprimarysystemfails,LifeKeeperwillautomaticallyperformaswitchoverforonlythoseresourcesandapplicationsproperlyconfiguredonthesystemandunderLifeKeeperprotection.ThefollowingshouldbecompletedbeforeLifeKeeperisputintooperation:
∙Servers.Two(ormore)pairedserversrunningWindows2000withthelatestServicePackareneededforaLifeKeeperconfiguration.Althoughtheserversmustbefromthesupportedlist,thepairedsystemsdonothavetobethesametype.LifeKeepersupportsmixedsystems.
∙Communicationspaths.ATransportLayerInterface(TLI)compliantnetworkshouldbeinstalledandoperational.
∙Sharedresources.AlthoughthemostcommonLifeKeeperconfigurationinvolvessharedperipheralsviaasharedSCSIdiskarray,LifeKeepercanalsoprotectresourcessharedoveranetwork.SharedperipheralsarenotrequiredinaLifeKeeperconfiguration.
SharedresourcesincludesharedSCSIdiskarraysandExtendedMirroring.
SharedSCSIDiskArrays
EachsharedSCSIdisk(LUN)mustbeaddedONLYtoitsprimarysystem.EachSCSIdisk(LUN)mustbeproperlyconfigured(partitioned)foritsprimarysystem,priortoconfiguringitintoLifeKeeper.OnceasharedSCSIdisk(LUN)isconfiguredintoLifeKeeperonitsprimarysystem,thediskswillautomaticallybeconfiguredintothebackupsystem.NotethatpriortoinstallationofLifeKeeper,theoperatingsystemdoesnotpreventmultiplesystemaccesstothesharedSCSIdisks.
ExtendedMirroring
ExtendedMirroringprovidessoftware-basedmirroringbetweentwoserversoveraLocalAreaNetwork(LAN).ExtendedMirroringsoftwareisacosteffectivesolutionforincreasedclient/serveravailabilitywhileatthesametimeassuringdataintegrity.Oneoftheserversisdesignatedtheprimaryserver—theotherthesecondary.Clientscanreadorwriteonlytothemirroredvolumeontheprimaryserver.Thecorrespondingvolumeonthesecondaryislockedpreventingaccesstodataunlessafailedstateisdetectedontheprimaryserver—acriticalconsiderationwhenimplementingaHighAvailabilitysolution,sincedataintegrityisamajorfactor.
AlthoughExtendedMirroringisastand-alonefeature,itsfunctionalityissignificantlyenhancedwhenusedinconjunctionwithLifeKeeperforWindows.(ThisfeaturewillbecoveredindetailinalatertrainingmoduleuponreleaseforWindows2000.)
SettingUptheLifeKeeperEnvironment
HardwareInstallationOverview
ThissectionfirstlistsLifeKeeperconfigurationtasks,thenexplainstherequirementsthatmustbeconsideredwhileperformingeachtask.Startoutmappingeverythingwiththefirsttwonodes.Ifcascadingfailoveristobeemployed,identifytheseresourcesfortheadditionalnodesaswell.
1.Verifyserverspecifications.
2.Createconfigurationmap.
3.Setupandtestcommunicationpaths.
4.Determinepackage/kitrequirements.
5.DetermineSharedResourcerequirements.
6.DetermineSCSIHostAdapterrequirements.
7.Connectserversandperipherals.
Whenthesehardwaretasksarecompleted,proceedwiththesoftwareinstallationanddefinitionstasksdescribedlaterinthislesson.
Installation-StepbyStep
1.Verifyserverspecifications.
Whendeterminingtheprocessortypesfortheconfiguration,considersuchfactorsastheprocessing,memory,andotherI/Orequirements.Forexample,whenusingLifeKeepertospecifyaserverasbackupforresources,ensurethattheserverhasthecapacitytoperformtheprocessingshouldaswitchoveroccur.
ServersmustbeinstalledwithWindows2000andlatestServicePack.
Thesystem(network)namesshouldbesetupbeforeinstallingLifeKeeper.TheLifeKeeperstatusdisplayiseasiertoreadifsystemnamesarelimitedtonomorethan10characters.
EnsureyouhavecorrectTCP/IP,storage,memory,diskspace,adapters,applications,etc.SeetheLifeKeeperReleaseNotesfordetails.
2.Createconfigurationmap
Aconfigurationdiagramcanhelpdeterminethecablingandcommunicationsconnectionsrequirements.Bymappingfirstthepairedserverassignmentsbeforeconfiguringthehardware,andthenbymappingtheextraservers,thefollowingcriticalfactorsmustbeassessed:
Communicationconnectionrequirements:
Itisstronglyrecommendedthatatleasttwocommunicationconnectionsbeconfiguredusingdifferentmediabetweeneachserver.
Accesstosharedresources:
BecauseLifeKeeperlocksresourcestoonesystemoranother,ensurethatonlyonesystemrequiresaccesstoaparticularlockedresourceatanygiventime.
Forexample,themapthatfollowsisforapairofserverswithadiskarraysubsystemwhereServer1istheprimaryLifeKeeperserver.Server2isgivensecondpriority.Inthiscase,thereisnocontentionfordiskresourcesbecauseonesystematatimereservesanentirelogicalvolume.
3.SetupandTestCommunicationsPaths
AppropriatelyconfiguredandfullyoperationalcommunicationspathsarecriticaltothesuccessfuloperationofLifeKeeperconfigurations.
AsintroducedinModule1,LifeKeepersupportsthreetypesofCommunicationProtocolsforinter-nodeandheartbeatcommunications:
TCP/IP(Socket)
Forthenetworkcommpath,anynetworkhardwareinterfacessupportingTCP/IPcanbeused.TheseincludeEthernet10Base2,Ethernet10BaseT,TokenRing,andFDDI.
LifeKeepersupportsIPLocalRecovery,sothatifaNetworkInterfaceCared(NIC)dies,asecondadapterinthesamesystemcanbeconfiguredtotakepartinLocalRecovery.Therefore,ifNIC#1died,LocalRecoverywouldallowNIC#2totakeNIC#1’splace.TheentiresystemwouldnothavetofailoverwithLocalRecoveryenabled.WARNING:
Althoughitisnotrecommended,iftwoadaptersareconfiguredonasinglenetwork,turnoffNETBIOSbindingsonthesecondadapter.
ItisstronglysuggestedthatonenetworkadapterforeachnodebeattachedtoaprivatenetworkusedonlyforLifeKeepercommunicationpaths.Thisisolatesatleastoneheartbeatfromgeneralnetworktraffic,thusavoidingfalsefailoversandfacilitatingLifeKeepermessagepassingbetweennodes.ThisprivatenetworkconnectionshouldbeconfiguredfirstasthehighestpriorityTCP/IPcommpath.
TTY(SerialPort)
OnlyoneTTYcommpathshouldbeconfiguredinaLifeKeeperconfigurationtoeachserver.TheTTYcommpathrequirestheuseofaRS-232cNullmodemcabletoconnecttotheLifeKeepersystems.Theselectedcommunicationsportsdonotneedtobethesameoneachsystem.However,thecablemustphysicallyconnecttheportsused.TheTTYpathmustuseatleastthedefaultbaudrateof9600.
TIP:
Addtheoption/nomousetothebootlineinthec:
\boot.inifile.Otherwise,theoperatingsystemmaydetectactionontheCOMportwhenbootingup
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