Chapter26:UsingOrionScalabilityEngines
ScalabilityEngineDeployment Options
Thefollowingsectionsdiscusscommonscalabilityenginedeploymentoptions:
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Centralized
Deployment
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Distributed
Deployment
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Centralized
Deployment
with
Remote
Polling
Engines
CentralizedDeployment
Thisisthesimplestdeploymentoption,asthereisonlyoneSolarWinds Orion
server,andsoftwareisonlyinstalledinthePrimaryregion.Thisoptioniswell
suitedtoenvironmentswheremostofthemonitorednodesarelocatedinasingle,
primaryregionandwhereotherregionalofficesaremuchsmaller.This
deploymentisoptimalwhenthefollowingconditionsapply:
1. TheremoteofficeisnotlargeenoughtorequirealocalSolarWinds Orion
serverinstanceorpollingengine.
2. TherearenotenoughmonitorednodestorequirealocalSolarWinds Orion
serverinstanceorpollingengine.
3. YouprefertohaveacentralpointofadministrationfortheSolarWinds Orion
server.
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Inatypicalcentralizeddeployment,theprimarySolarWinds Orionserverpollsall
datathatisthenstoredcentrallyinthedatabaseserver.Boththeprimary
SolarWinds OrionserverandthedatabaseserverareinthePrimaryRegion.To
viewdataRegionalOperatorsineachregionmustlogintotheOrionWeb
Consoleintheprimaryregion,whereyourOrionplatformproductsareinstalled.
AdditionalWebServersareavailableandmaybeinstalledinsecondaryregions.
IfanAdditionalWebServerisdeployed,aRegionalOperatorcanlogintoalocal
webconsoletoviewallnetworkdata.
Areliablestaticconnectionisrequiredbetweentheprimaryregionandall
monitoringregions.Thisconnectioncontinuallytransmitsmonitoringdata.The
quantityofbandwidthconsumedwilldependonmanyfactors,includingthetype
andnumberofSolarWindsOrionplatformproductsthatareinstalledandthe
typesandquantityofmonitoredelements.Itisdifficulttopreciselyestimate
bandwidthrequirements,aseachSolarWindsmonitoringenvironmentisunique.
Notes:
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CentralizedDeployment
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Chapter26:UsingOrionScalabilityEngines
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AllnodesarepolledfromasingleSolarWinds Orionserverinstanceinthe
PrimaryRegion,andalldataisstoredcentrallyonthedatabaseserverin
theprimaryregion.
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Eachinstalledmodulewillneedtohaveenoughavailablelicensestocover
allregions.
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AllKPI’s,suchasNodeResponseTimes,willbecalculatedfromthe
perspectiveofthePrimaryOrionServer.Forexample,theresponsetimefor
amonitorednodeinRegion2willbeequaltotheroundtriptimefromthe
PrimaryOrionServertothatnode.
DistributedDeployment
ThisisthetraditionalSolarWindsOriondistributeddeploymentoption,comprising
separateinstancesofSolarWindsOrionplatformproductsinstalledlocallyin
eachregionwiththeEnterpriseOperationsConsole(EOC)availableasatop
leveldashboardtoaccessdataacrossallrelatedinstances.
Thisoptioniswellsuitedtoorganizationswithmultipleregionsorsiteswherethe
quantityofnodestobemonitoredineachregionwouldwarrantbothlocalized
datacollectionandstorage.Itworkswellwhenthereareregionalteams
responsiblefortheirownenvironments,andwhenregionalteamsneedautonomy
overtheirmonitoringplatform.Thisoptiongivesregionaloperatorsthisautonomy
andtheabilitytohavedifferentmodulesandlicensesizesinstalledineach
regiontomatchindividualrequirements.Whilethesystemsaresegregated
betweenregions,alldatacanstillbeaccessedfromthecentrallylocated
EnterpriseOperationsConsole(EOC).
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Eachregionislicensedindependently,anddataarepolledandstoredlocallyin
eachregion.Modulesandlicensesizesmaybemixedandmatchedaccordingly.
Intheexampleprovided,
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Region1hasdeployedNPMSLX,SAMAL1500,UDT50,000,andthree
additionalpollingengines
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Region2hasdeployedNPMSL500,NTAforNPMSL500,UDT2500,and
threeadditionalpollingengines
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Region3hasdeployedNPMSL100onlyandthreeadditionalpolling
engines
Asinthisexample,ifEOCisusedasacentralizeddashboardtoaccessdata
storedregionally,thefollowingconsiderationsapply:
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AreliablestaticconnectionisrequiredbetweenEOCandallmonitoring
regions.
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DistributedDeployment
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Chapter26:UsingOrionScalabilityEngines
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EachSolarWinds Orionserverisincrementallypolledforcurrentstatusand
statisticsonly.EOCdoesnotstorehistoricaldata.Becauseitonlyperforms
incrementalpollingforcurrentstatusandstatistics,thebandwidthusedby
EOCisnotconsideredtobesignificant.
Notes:
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Eachregionismanaged,administered,andupgradedindependently.For
example,node,user,alert,andreportcreation,deletionandmodification
areperformedseparatelyineachregion.Certainobjects,suchasalert
definitions,UniversalDevicePollers,andServerandApplicationMonitor
templatescanbeexportedandimportedbetweeninstances.
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Eachregioncanscaleindependentlybyaddingadditionalpollingengines
asrequired.
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CentralizedDeploymentwithRemotePollingEngines
ThisoptioncombinesthebenefitsofacentralizedOrioninstancewiththe
flexibilityoflocalizeddatacollection.Managementandadministrationisdone
centrallyontheprimaryserver.Thisiswellsuitedtoorganizationsthatrequire
centralizedITmanagementandlocalizedcollectionofmonitoringdata.
Inacentralizeddeploymentwithremotepollingengines,additionalpolling
enginespolldatalocallyineachregion,andthepolleddataisthenstored
centrallyonthedatabaseserverintheprimaryregion.RegionalOperatorsin
eachregionlogintotheOrionWebConsoleinthePrimaryRegionwherethe
primarySolarWinds Orionserverisinstalledtoviewdata.
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CentralizedDeploymentwithRemotePollingEngines
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Chapter26:UsingOrionScalabilityEngines
AdditionalWebServersareavailableandmaybeinstalledinsecondaryregions.
UsinganAdditionalWebServer,aRegionalOperatorcanthenlogintoalocal
webconsoletoviewallnetworkdata.
Notes:
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ThecombinationofthePrimaryOrionServer,databaseserverandall
remotelydeployedpollingenginesisconsideredtobeasingleSolarWinds
Orioninstance.
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Thissingleinstanceisbeingmanagedandadministeredcentrally.For
example,node,user,alert,andreportcreation,deletionandmodificationis
performedcentrallyonthePrimaryOrionServeronly.
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Whennodesareadded,theuserselectsthepollingenginetowhichthe
nodeisassigned.Alldatacollectionforthatnodeisthenperformedbythat
pollingengine,andnodescanbere-assignedbetweenpollingengines,as
required.
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Areliablestaticconnectionmustbeavailablebetweeneachregion.
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ThisconnectionwillbecontinuallytransmittingMSSQLDatatothe
OrionDatabaseServer;itwillalsocommunicatewiththePrimary
OrionServer.
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Thelatency(RTT)betweeneachadditionalpollingengineandthe
databaseservershouldbebelow300ms.Degradationmaybegin
around200ms,dependingonyourutilization.Ingeneral,theremote
pollingengineisdesignedtohandleconnectionoutages,ratherthan
highlatency.Theabilitytotolerateconnectionlatencyisalsoa
functionofload.Additionalpollingenginespollingalargenumberof
elementsmaybepotentiallylesstolerantoflatencyconditions.
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Tocalculatethebandwidthrequirementforaremotepollingengine,
considerthefollowingexample.Iftheadditionalpollingenginepolls
800SNMPnodes,eachnodecontaining12interfacesandtwo
volumes,thenthedataflowbetweenthepollingengineandthe
databaseserverisapproximately300KB/s.Thiscalculationonly
considersthepollingactivitywithdisabledtopology,anddoesnot
takeintoaccountthebandwidthrequirementassociatedwithsyslogs,
trapsandalerts.
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EachpollingengineusesMicrosoftMessageQueuing(MSMQ).
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Thisallowsdatatobecachedlocallyontheadditionalpollingengine
serversintheeventofaconnectionoutagetotheOrionDatabase
Server.
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Theamountofdatathatcanbecacheddependsontheamountofdisk
spaceavailableonthepollingengineserver.Thedefaultstorage
spaceis1GB.Ageneralguidelineisthatuptoonehourofdatacan
becached.Whentheconnectiontothedatabaseisrestored,theOrion
DatabaseServerisupdatedwiththelocallycacheddata.The
synchronizationoccursinaFIFOorder,meaningthattheoldestdata
isprocessedfirst.Thismeansthataftertheconnectionisrestored,a
periodoftimeelapsesbeforethemostup-to-datepollingdataappears
instantlyinthedatabase.
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Ifthedatabaseconnectionisbrokenforalongertimeandthecollector
queuebecomesfull,thenewestdataisdiscardeduntilaconnectionto
thedatabaseisre-established.
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Dataqueuingissupportedformodulesthatusethecollector.
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RegionalOperatorsineachregionwilllogintotheOrionWebConsolein
thePrimaryRegionwhereyouSolarWindsOrionplatformproductsare
installedtoviewdata.
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AnoptionalAdditionalWebServerisavailable,anditcanbeinstalledin
secondaryregions.Regionaloperatorscanthenlogintotheirlocalweb
consoles.
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AllKPIs,suchasNodeResponseTimes,willbecalculatedfromthe
perspectiveofeachregionalAdditionalPollingEngine.Forexample,the
responsetimeforamonitorednodeinRegion2willbeequaltotheround
triptimefromtheAdditionalPollingEngineinRegion2tothatnode.
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CentralizedDeploymentwithRemotePollingEngines
Chapter26:UsingOrionScalabilityEngines
Installing Additional Polling Engines
TheinstallationandinitialconfigurationofanewAdditionalPollingEngine
followsthesamestepsastheinstallationandconfigurationofaprimary
SolarWindspollingengine,withthefollowingadditionalconsiderations:
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ThemostrecentinstallerisavailableinyourSolarWindsCustomerPortal
withintheOrion_Additional_Polling_Engine_version.ziparchive.
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Ifyouwanttomonitorormanagedevicespolledbyanadditionalpolling
engineinanyOrionmodule,youmustinstalltheadditionalpollingengine
fortheappropriatemodule.Formoreinformation,seetheSolarWinds
documentationforyourOrionmodule.
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Individuallicensesmustbeactivatedforeachpollingengineinastackable
pollerinstallation.
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IfyouhaveconfiguredanalertwithaSendEmailactiontotriggeronanode
monitoredbyanadditionalpollingengine,confirmthattheadditionalpolling
enginehasaccesstoyourSMTPserver.
ToinstallanOrionAdditionalPollingEngine:
1. Launchtheappropriateexecutable,whichyouhavedownloadedfromthe
SolarWindswebsite.
Notes:
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TheexecutableextractstoafoldercontaininganHTMLreadme,an
InstallerGuide,andAdditionalPollingEngineinstallersforallOrion
productsthatsupportAdditionalPollingEngines.
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LaunchtheinstallerthatcorrespondstotheSolarWindsproduct
installedonyourprimarySolarWindsNPMserver.
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IfyouhavemultipleOrionproductsinstalledonyourprimary
SolarWindsNPMserver,installtheadditionalpollingengineforeach
producttoensurefullfunctionality.
2. OntheWelcomewindowoftheCompatibilityCheck,providethefollowing
information:
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TheHostnameorIPAddressofyourprimarySolarWindsNPM
server.
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TheUsernameandPasswordofauserwithadministrative
privilegestotheOrionWebConsoleonyourprimarySolarWinds
NPMserver.
3. ClickNext,andthencompletetheinstallationasyouwouldonaprimary
SolarWindsNPMserver.
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InstallingAdditionalPollingEngines
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