
Upgradingmultipleenvironments
Thissectionappliestodeploymentarchitecturesinvolvingmultipleenvironmentswithvariouspurposes,such
asdevelopment,testing,andproduction.
OnceaversionupgradeorpatchreleaseisappliedtotheGSA,itcannotberevertedtoapreviousversion.
Additionally,changes/additionstoGSAfunctionalitymightoccasionallyimpacttheexistingfunctionalityofa
searchsolution,forexampleonewheretheGSAhasbeentightlyintegratedwithinotherapplications.For
thesereasons,versionupgradesshouldbeappliedthroughdevelopmentandtestingenvironments,andfirst
betestedrigorouslybeforeupdatingaproductionsearchappliance.
Inadeploymentwhereaproductionenvironmentcontainsoneormorebackupsearchappliancesfor
disasterrecoveryorfailover,thefollowingstepsarerecommended:
1. Switchservingtoabackupsearchappliance
2. Updatetheproductionsearchappliancefirst,beforeupgradingabackupsearchappliance
Thisprocessallowsuserstocontinueusingsearchontheexisting,familiarversionofthesearchappliance
whileverificationandcutoverofthenewversioninproductionistakingplace.Ifmirroringisinuse,referto
UpgradinganinterconnectedGSAnetwork.
UpgradinganinterconnectedGSAnetwork
Specialconsiderationsmustbeobservedwhenupgradingdeploymentarchitecturesinvolvingtwoormore
GSAsconnectedtoeachotherbytheuseofMirroring,DistributedCrawlingandServing,orUnification.
Ingeneral,theprimaryGSA(s)inaninterconnectedGSAnetworkshouldbeupgradedbefore
secondary/backupGSAsareupgraded.
However,eachnewreleasehasUpdateInstructionsthatprovidedetailedstepsforupgradinginterconnected
GSAs.Itisimportantthatthesestepsarecloselyfollowed,asperforminganupgradeincorrectlymayresult
intheintegrityoftheGSAnetworkandsearchindexbeingcompromised,potentiallyrequiringacomplete
reindexingofcontent.Ifindoubt,contactGoogleEnterpriseSupportoraGSAQualifiedDeployment
Specialistforclarification.
Upgradingwithconnectorsorfeeds
ThissectionappliestodeploymentarchitecturesinvolvingtheuseofGSAconnectorsorfeeds.
IfyourenvironmentusesGSAconnectorsorfeeds,thedowntimeassociatedwithupgradingasearch
appliancemustbetakenintoaccountandplannedfor.Therearetwoconsiderationsfordowntimewhen
usingconnectorsorfeeds:
● Indexingofcontent
● Servingofcontent,whereconnectorsareusedforauthenticationandauthorization
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