User`s guide

ADM User’s Guide
36 VMware, Inc.
Troubleshooting Knowledgebase
NavigatetoDetailDiscovery>TroubleshootingKnowledgebasepagefortroubleshootingscenarios.The
followingisanexampleinwhichyouwouldusethistab:
1Youencounterdetaildiscoveryproblemsorerrors.
2YourCustomerSupportRepresentativecannotresolvetheproblem.Engineeringrequiresmore
informationandcreatesaspecializedknowledgebasefileinorderto
debugtheproblem.
3YouuploadthefilefromtheDetailDiscovery>TroubleshootingKnowledgebasepage.
Deploying Detail Discovery
ThissectiondescribeshowtodeployDetailDiscovery.
Detail Discovery Configuration
ADMhasanextensivedetaildiscoveryfeaturethatenhancesandcomplementstheresultsobtainedthrough
PassiveDiscovery.DetailDiscoveryisperformedbycommunicationbetweenhostsinamanagednetwork,
usingfourcommonnetworkprotocols:SNMP,SSH,Telnet,andWMI.Detaildiscoveryisalsoperformedusing
thediscoveryprotocolVI‐SDK,which
isaVMwareproprietaryAPIusedtoquerymodelofVMware,control
thebehaviorofvirtualinfrastructure,andreceivenotificationsonchangesinthevirtualenvironment.
Usingtheseprotocols,supplementaryinformationaboutnetworkhostsisobtainedandaddedtothe
ConfigurationManagementDatabase(CMDB).Tomaximizesecurityandminimizetherisk
ofimpactonthe
managednetwork,theadministrativeuseroftheADMConsolecantightlycontrolthesetupandscheduling
oftheDetailDiscoveryqueriestothevariousnetworkhosts.
How Do Active Probe Configurations Affect Detail Discovery Policies?
ForDetailDiscoverytobesuccessfulinaDistributedsetup,thehoststobediscovered,needstobeincluded
inbothaDetailDiscoverypolicyandanActiveProbeconfiguration.TheDetailDiscoverypolicyincludesa
listofitemstoincludeintheDetailDiscovery,whiletheActiveProbeconfigurationassigns
thespecifichosts
onwhicheachCollectorcanperformDetailDiscovery.
DetailDiscoveryisnotbeperformedonahostthatisincludedinaDetailDiscoverypolicyifitisnotincluded
inanActiveProbeconfiguration.However,thehostisstillrecognizedthroughPassiveDiscoveryandwill
appearas
OrphanedintheDetailDiscoverydashboardbecausetheActiveProbeconfigurationhasno
correlationwithPassiveDiscovery.
Detail Discovery Policies
DetailDiscoveryiscontrolledandconfiguredthroughuser‐definedDetailDiscoverypolicies.Therecanbe
manypolicies,eachdescribingaquerythatisrunningperiodicallyandcollectingnetworkinformation.For
eachpolicy,thefollowingparametersaredefined:
 Thediscoveryscope,thatis,thesetofnetworkhoststhatisqueriedforinformation.
 Schedulinginformation:Howoftentoaccessthenetworkhostscoveredbythepolicy.Thescheduling
schemeletsADMuserscontrolandbalancetwoconflictingfactors.Thetwoconflictingfactorsare,the
needtohavethemostupdatedpictureandtheneedtoavoidoverloadingthenetworkwithtoomany
DetailDiscovery
queries.
 Discoveryplan:Adiscoveryplanallowsyoutodefineexactlywhatwillbediscovered,andtherefore
improveperformance.YoucancreatepassiveorDetailDiscoveryplansthatcanincludeorexcludethe
discoveryofspecifichosts,services,andconnections.
N
OTETroubleshootingknowledgebaseappliesonlytocreateadetaildiscoverysupportpackageuntilthefile
isremoved.Itdoesnotcustomizethedetaildiscoveryknowledgebasepermanently.