Google Search Appliance Upgrade and Migration Handbook Manuale Utente Scaricare il pdf (Pagina 9)

Upgradingmultipleenvironments

Thissectionappliestodeploymentarchitecturesinvolvingmultipleenvironmentswithvariouspurposes,such

asdevelopment,testing,andproduction.

OnceaversionupgradeorpatchreleaseisappliedtotheGSA,itcannotberevertedtoapreviousversion.

Additionally,changes/additionstoGSAfunctionalitymightoccasionallyimpacttheexistingfunctionalityofa

searchsolution,forexampleonewheretheGSAhasbeentightlyintegratedwithinotherapplications.For

thesereasons,versionupgradesshouldbeappliedthroughdevelopmentandtestingenvironments,andfirst

betestedrigorouslybeforeupdatingaproductionsearchappliance.

Inadeploymentwhereaproductionenvironmentcontainsoneormorebackupsearchappliancesfor

disasterrecoveryorfailover,thefollowingstepsarerecommended:

1. Switchservingtoabackupsearchappliance

2. Updatetheproductionsearchappliancefirst,beforeupgradingabackupsearchappliance

Thisprocessallowsuserstocontinueusingsearchontheexisting,familiarversionofthesearchappliance

whileverificationandcutoverofthenewversioninproductionistakingplace.Ifmirroringisinuse,referto

UpgradinganinterconnectedGSAnetwork.

UpgradinganinterconnectedGSAnetwork

Specialconsiderationsmustbeobservedwhenupgradingdeploymentarchitecturesinvolvingtwoormore

GSAsconnectedtoeachotherbytheuseofMirroring,DistributedCrawlingandServing,orUnification.

Ingeneral,theprimaryGSA(s)inaninterconnectedGSAnetworkshouldbeupgradedbefore

secondary/backupGSAsareupgraded.

However,eachnewreleasehasUpdateInstructionsthatprovidedetailedstepsforupgradinginterconnected

GSAs.Itisimportantthatthesestepsarecloselyfollowed,asperforminganupgradeincorrectlymayresult

intheintegrityoftheGSAnetworkandsearchindexbeingcompromised,potentiallyrequiringacomplete

reindexingofcontent.Ifindoubt,contactGoogleEnterpriseSupportoraGSAQualifiedDeployment

Specialistforclarification.

Upgradingwithconnectorsorfeeds

ThissectionappliestodeploymentarchitecturesinvolvingtheuseofGSAconnectorsorfeeds.

IfyourenvironmentusesGSAconnectorsorfeeds,thedowntimeassociatedwithupgradingasearch

appliancemustbetakenintoaccountandplannedfor.Therearetwoconsiderationsfordowntimewhen

usingconnectorsorfeeds:

● Indexingofcontent

● Servingofcontent,whereconnectorsareusedforauthenticationandauthorization

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Google Search Appliance Upgrade and Migration Handbook Manuale Utente Pagina 9