TableofContents
TableofContents
GreenplumCommandCenterUserGuide
Dashboard
QueryMonitor
HostMetrics
ClusterMetrics
MonitoringMultipleGreenplumDatabaseClusters
HistoricalQueries&Metrics
SegmentStatus
StorageStatus
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GreenplumCommandCenterUserGuide
TheGreenplumCommandCenterwebinterfaceisamanagementtoolthatprovidessystemstatusandquerymonitoringfacilitiesforGreenplum
Databaseadministratorsandusers.
CommandCenterviewsallowyoutoinstantlyviewtheoverallstatusoftheGreenplumDatabasesystem.Youcandrilldowntoseedetailsabouthosts,
databasesegments,queries,andCPU,memory,anddiskresourceutilization.
ThefollowingtopicsdescribetheinformationdisplayedoneachCommandCenterview.
Dashboard
TheDashboarddisplayswhenyoufirstlogintotheCommandCenter.ItshowsanoverviewofthestatusoftheGreenplumDatabaseclusterthe
CommandCentermanagesandprovideseasyaccesstodetailedinformationaboutanyaspectofsystemstatus.
QueryMonitor
Viewcurrentrunningandqueuedqueries.Selectaquerytoviewitsquerytextandexecutionplan.Withproperpermissions,choosequeriesandcancel
them.
*HostMetrics
Viewreal-timestatisticsbyserverinatableformat.
ClusterMetrics
Viewchartsofcurrentandrecentstatisticsforallhosts(excludingmasterandstandby).
History
Viewqueriesandhistoricalchartsofstatisticsforaselectedtimeperiod,optionallyfilteredbydatabaseanduser.
System->SegmentStatus
Viewastatussummaryforallprimaryandmirrorsegmentsanddetailsforeachsegment.
System->StorageStatus
Viewthecurrentpercentagediskspaceinuseformasterandsegmenthosts,ahistoricalchartofsegmenthostdiskusage,andcurrentdiskusageby
host.
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Dashboard
TheDashboarddisplayswhenyoufirstsignintoPivotalGreenplumCommandCenter.TheDashboardprovidesaquickviewofthecurrentsystem
status,SegmentHealth,Queries,CPU,Memory,andDiskusage.Clickingonapanelprovidesmoredetailedinformationaboutthemetric.
SystemInformation
Thefollowingsysteminformationisdisplayedatthetopofthepage.
Uptime
TheelapsedtimesincetheGreenplumDatabasesystemwaslaststarted.
GPDBVersion
TheversionoftheGreenplumDatabasesoftwarethemonitoredclusterisrunning.
Connections
ThenumberofactiveGreenplumDatabasesessions(clientconnections).
LastSync
Dateandtimethedatawaslastsynchronized.TheCommandCenteruserinterfaceupdatesviewswithlivedataevery15seconds.
SystemSummary
TheSegmentHealthsectionoftheDashboardprovidesaquickoverviewofthestatusoftheGreenplumDatabasemanagedbythisinstanceofthe
CommandCenter.
ClickingtheSegmentHealthpaneldisplaystheSegmentStatusCommandCenterpage.
DatabaseStateisthecurrentstateoftheGreenplumDatabasesystem.Thestatecanbeoneofthefollowing:
Normal:Thedatabaseisfunctioningwithnomajorerrorsorperformanceissues.
Segment(s)Down:Thedatabaseisinchange-trackingmodeorresyncmode.Overallperformanceandsystemreliabilityisgreatlyreduced.Seethe
PivotalGreenplumDatabaseSystemAdministratorGuideforinformationaboutresolvingthiscondition.
DatabaseUnreachable:TheGreenplumPerformanceMonitoragentcannotconnecttothedatabase.Thedatabaseislikelydown.SeethePivotal
GreenplumDatabaseSystemAdministratorGuide fortroubleshootinginformation.
Unbalanced:Somesegmentsarenotrunningintheirpreferredroles.Thatis,primariesarerunningasmirrorsandmirrorsarerunningasprimaries,
resultinginunbalancedprocessing.
Resyncing:Thedatabaseisperformingarecoveryorrebalanceoperation.
ThebargraphintheSegmentHealthsectionshowstheupordownstatusofalldatabasesegmentsinyourPivotalGreenplumDatabasesystem.Acolor
indicatorandassociatednumberindicatethenumberofdatabasesegmentsthatarecurrentlyinthatparticularstate.Segmentscanhavethefollowing
states:
Up(Green)
Down(Red)
DiskUsageSummary
ThischartdisplaystotaldiskusageanddiskavailablefortheGreenplummasterhostandsegmenthostsatthelastsynchronization.Hoveroverthechart
toseetheamountofdiskused,free,andtotal.
Queries
Thisgraphdisplaysasummaryviewofactiveandqueuedqueriesforthelast60minutes.ClickonthecoloreddotnexttotheRunningorQueuedlabelto
togglethelineonoroff.Atleastonelinemustbevisibleatalltimes.Hoveroverthegraphtodisplaythenumberofqueriesforeachvisiblelineatthat
pointintime.
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CPU
ThisgraphdisplaysaverageCPUusageacrosstheentirecluster,forthelast60minutes.Thegraphdisplaysseparatelinesforsystemprocessesanduser
processes.TheuserCPUusageincludestheGreenplumdatabasemaster,standby,andsegmentprocesses.ClickonthecoloreddotnexttotheSystemor
Userlabeltotogglethatlineonoroff.Atleastonelinemustbevisibleatalltimes.
HoveringthecursoroveralineinthegraphdisplaysasmallwindowwiththepercentageofCPUusedatthatpointintimeforthevisiblelinesandthe
totalifboththesystemanduserlinesarevisible.
Memory
Thisgraphdisplaystheaveragepercentofmemoryusedacrosstheentireclusteroverthelast60minutes.Hoveroverthelinetodisplaythepercentof
memoryusedatthatpointintime.
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QueryMonitor
QueryMetrics
UsingtheQueryMonitorTabControls
TheQueryMonitorviewallowsyoutoviewdetailedinformationforactivequeriesrunningontheGreenplumDatabasesystem.Superusersandusers
assignedtheoperatorrolecanseeandcancelallusers’queries.
Dataiscollectedoncurrentlyrunningqueriesandthequerymonitormetricsareupdatedevery15seconds.Thetimeofthelastupdateandagraphical
timershowingthetimeremainingbeforethenextupdatearedisplayedatthetopofthepage.
Withtheinformationavailableonthistab,GreenplumDatabaseadministratorscaneasily:
Understandhowthesystemisbeingused—bothinreal-timeandtrendingovertime.
Identifyanddiagnoseproblemquerieswhiletheyarerunning,detectskew,findrunawayqueries,andsoon.
Reviewandbalancethequeryloadonthesystembybetteroptimizingandschedulingthequeryload.
Cancelqueriesthatdisruptsystemperformance.
QueryMetrics
TheQueryMonitortabledisplaysthefollowingcolumnsforqueries.
QueryID
Anidentificationstringforthequery.IntheConsole,thislookslike“1295397846-56415-2”.CommandCentergeneratesthisIDbycombiningthe
queryrecord’s tmid , ssid ,and ccnt fields.(Seequeries_* intheCommandCenterDatabaseReference.)
Status
Thestatusofthequery.Thiscanbeoneofthefollowing:
Queued:thequeryhasnotyetstartedtoexecute
Running:executionhasstarted,isnotyetcomplete
Done:completedsuccessfully
Cancelling:cancelrequestsent,cancelpending
Cancelled:terminated,nolongerrunning
User
TheGreenplumDatabaseuserwhosubmittedthequery.
Database
Thenameofthedatabasethatwasqueried.
SubmitTime
Thetimethequerywassubmittedtothequeryplanner.
QueueTime
Theamountoftimethequeryhasbeen(orwas)inqueueawaitingexecution.
RunTime
Theamountoftimesinceexecutionbegan.
CPU%
(Activequeriesonly.)CurrentCPUpercentaverageforallprocessesexecutingthisquery.Thepercentagesforallprocessesrunningoneach
segmentareaveraged,andthentheaverageofallthosevaluesiscalculatedtorenderthismetric.CurrentCPUpercentaverageisalwayszeroin
historicalandtaildata.
CPUSkew
TheamountofCPUskew.CPUskewoccurswhenqueryexecutorprocessesforonesegmentuseadisproportionateamountofCPUcomparedto
processesforothersegmentsexecutingthequery.ThisvalueisthecoefficientofvariationfortheCPUusedbyprocessesrunningthisqueryoneach
segment,multipliedby100.Forexample,avalueof.95isshownas95.
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RowSkew
Ameasureofrowskewinthesystem.Rowskewoccurswhenonesegmentproducesadisproportionatenumberofrowsforaquery.Thisvalueis
thecoefficientofvariationfortheRowsOutmetricofalliteratorsacrossallsegmentsforthisquery,multipliedby100.Forexample,avalueof.95is
shownas95.
Queue
Thenameoftheresourcequeueforthequery.
Priority
Eachqueryinheritsthepriorityassignedtoitsresourcequeue.FormoreinformationaboutResourceQueuesandQueryPlans,refertothe
GreenplumDatabaseAdministratorGuide.
UsingtheQueryMonitorControls
Clickacolumnheadingtosorttherowsonthatcolumninascendingordescendingorder.
Clickthecheckboxattheleftofarowtochooseaquerytocancelorexport.Clickthecheckboxintheheadingrowtochooseallqueries.
ClickCancelQuerytocancelselectedqueries.
ClickExporttodownloadacomma-separatedvalues(CSV)textfilecontainingrowsfortheselectedqueries.Whennoqueriesareselected,allrows
areexported.Thedefaultfilenameis spreadsheet.csv .
ClickanyqueryIDtoseetheQueryDetails
,includingmetrics,thetextofthequery,andthequeryplan.
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HostMetrics
TheHostMetricspagedisplaysatableofthehostsintheclusterwithstatisticscollectedatthemostrecentquantuminterval.Atthetop,LastSync
displaysthetimethestatisticswerelastupdated.
Clickacolumnheadertosortthetablebythatcolumn.Clickagaintotogglebetweenascendinganddescendingsort.Masterandstandbyhostsarenot
includedinthesortandarealwaysdisplayedfollowingthesortedlistofsegmenthosts.
Foreachserver,thefollowingcolumnsaredisplayed:
Hostname
Thehostnamenameoftheserver.
CPUTotal/Sys/User(%)
ThetotalpercentageofCPUinuseisdisplayednexttoagraphillustratingtheCPUusedforsystemanduserprocesses.Hoveroverthetablecellto
showthepercentagesusedforsystemanduserprocessesandthepercentageCPUidle.
MemoryInUse(%)
Thepercentageofhostmemoryinuseisdisplayednexttoagraphillustratingthememoryinuseandavailable.Hoveroverthetablecelltosee
memoryusedandavailableingigabytes.
Memoryiscalculatedasfollows:
Total=MemTotal
Free=MemFree+Buffers+Cached
Used=Total-Free
DiskR(MB/s)|Skew
Diskreadrateinmegabytespersecondisdisplayednexttoagraphofcalculateddiskreadskew.Hoveroverthetablecelltoseea
Low/Medium/Highratingfordiskskew.
DiskW(MB/s)|Skew
Diskwriterateinmegabytespersecondisdisplayednexttoagraphofcalculateddiskwriteskew.Hoveroverthetablecelltoseea
Low/Medium/Highratingfordiskwriteskew.
NetR(MB/s)|Skew
Networkreadrateinmegabytespersecondisdisplayednexttoagraphofcalculatednetworkreadskew.Hoveroverthetablecelltoseea
Low/Medium/Highratingfornetworkreadskew.
NetW(MB/s)|Skew
Networkwriterateinmegabytespersecondisdisplayednexttoagraphofcalculatednetworkwriteskew.Hoveroverthetablecelltoseea
Low/Medium/Highratingfornetworkwriteskew.
AboutSkewCalculations
DiskandNetworkskewratingsarecalculatedaseachserver’sstandarddeviationfromthemeancalculatedfromallsegmenthosts.
Low
Valueiswithin1standarddeviationfromthemean.(Note:ifthevarianceofthesetislessthan3,skewisconsideredlowregardlessofdeviation
frommean.)
Moderate
Valueisbetween1and2standarddeviationsfromthemean.
VeryHigh
Valueisgreaterthan3standarddeviationsfromthemean.
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ClusterMetrics
TheClusterMetricspageshowsconsolidatedstatisticsforallsegmenthostsintheGreenplumcluster.Masterandstandbymasterhostsareexcluded
fromthemetrics.
Thechartsdisplaymetricsforthelasttimeperiodsetbythecontrolinthetoprightcornerofthescreen.Thecurrentvalueofthemetricisintheupper
rightcornerofthechart.
Hoveroveranyofthechartstoseevaluesforthemetricsatapointintimeinpop-upboxes.Thechartsaresynchronizedsothathoveringoveranychart
showsthesamepointintimeinallcharts.
Onchartswithmultiplemetrics,togglethedisplayforalineonoroffbyclickingtheline’slabelinthelegendatthetoprightofthechart.Atleastoneline
mustbedisplayed.Alllinesareredisplayedatthenextquantuminterval.
Thepagehaschartsforthefollowingmetrics:
Queries
Thenumberofqueriesrunningandthenumberofqueriesqueuedtorun.
CPU
ThepercentageCPUusedbysystemprocessesandthepercentageCPUusedbyuserprocesses.
Memory
Percentageofmemoryinuse.
Memoryiscalculatedasfollows:
Total=MemTotal
Free=MemFree+Buffers+Cached
Used=MemTotal-Free
DiskI/O
Diskreadandwriteratesinmegabytespersecond.
Network
NetworkI/Oreadandwriteratesinmegabytespersecond.NetworkmetricsincludetrafficoverallNICs(networkinterfacecards),including
internalinterconnectandadministrativetraffic.
Load
Systemloadaveragefor1-minute,5-minute,and15-minuteperiods.
Swap
Percentageofswapspaceused.
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MonitoringMultipleGreenplumDatabaseClusters
TheGreenplumCommandCenterMulti-clusterviewdisplayshealthstatusformultipleGreenplumDatabaseclusters.Thechartscanbedividedinto
categories.
EachGreenplumDatabaseclusterthatappearsintheMulti-clusterviewmusthaveitsownCommandCenterinstance.TheMulti-clusterviewishostedon
asingle,designatedmasterCommandCenterinstance.Themasterinstanceretrievesthehealthstatusdatafromeachoftheclusters’CommandCenter
instances.
Clickingthestatuspanelforaclusterloadsthatcluster’sCommandCenterintoanewbrowserwindow.Ifauto-loginisenabledinthemulti-cluster
configurationfile,theloginscreenisbypassedandtheDashboardisdisplayed.
Multi-clustersupportisenabledbydeployingaconfigurationfiletotheCommandCenterinstancedirectories.SeeEnablingMulti-ClusterSupport
instructionstosetuptheMulti-Clusterpage.
for
TheMulti-clusterviewdisplaysthefollowinginformationforeachcluster.
ClusterName
Thenameforthecluster,asspecifiedinthemulti-clusterconfigurationfile.
DatabaseState
ThecurrentstateoftheGreenplumDatabasecluster.Thestatecanbeoneofthefollowing:
Normal:Thedatabaseisfunctioningwithnomajorerrorsorperformanceissues.
Segment(s)Down:Thedatabaseisinchange-trackingmodeorresyncmode.Overallperformanceandsystemreliabilityisgreatlyreduced.See
thePivotalGreenplumDatabaseSystemAdministratorGuideforinformationaboutresolvingthiscondition.
DatabaseUnreachable:TheGreenplumPerformanceMonitoragentcannotconnecttothedatabase.Thedatabaseislikelydown.Seethe
PivotalGreenplumDatabaseSystemAdministratorGuidefortroubleshootinginformation.
Unbalanced:Somesegmentsarenotrunningintheirpreferredroles.Thatis,primariesarerunningasmirrorsandmirrorsarerunningas
primaries,resultinginunbalancedprocessing.
Resyncing:Thedatabaseisperformingarecovertyorrebalanceoperation.
Uptime
TheelapsedtimesincetheGreenplumDatabasesystemwaslaststarted.
GPDBVersion
TheversionoftheGreenplumDatabasesoftwareeachmonitoredclusterisrunning.
Connections
ThenumberofactiveGreenplumDatabasesessions(clientconnections).
ActiveQueries
Thenumberqueriesqueuedorcurrentlyexecutinginthedatabase.
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HistoricalQueries&Metrics
TheHistoricalQueries&Metricspageallowsyoutodisplaysystemmetricsandqueriesexecutedduringaspecifiedtimeperiod.Queriesmayalsobe
filteredbydatabaseand/oruser.
SetthetimeperiodtodisplaybyenteringdatesandtimesintheFromandTodateandtimefields.Youcanenterdatesbytypingthemintothedatefield
orbychoosingfromthepop-upcalendar.Enter24-hourtimesinHH:MMformat.
Torestrictqueriesthatdisplayinthequerytableatthebottomofthepage,enteraGreenplumdatabasenameintheDatabasefield,ausernameinthe
Userfield,orboth.Filteringbydatabaseanduseronlyaffectsthequeriesdisplayedinthetable.Themetricsdisplayedinchartsincludeallactivityduring
theselectedtimeperiod.
ClickSearchtodisplayresultsthatmatchyourcriteria.
Chartsofthefollowingmetricsareavailable.Showorhidethematanytimewiththechecklistattheupperrightoftheview.
Queries
Thenumberofqueriesrunningandthenumberofqueriesqueuedtorun.
CPU
ThepercentageCPUusedbysystemprocessesandthepercentageCPUusedbyuserprocesses.
Memory
Percentageofmemoryinuse.
DiskI/O
Diskreadandwriteratesinmegabytespersecond.
Network
NetworkI/Oreadandwriteratesinmegabytespersecond.NetworkmetricsincludetrafficoverallNICs(networkinterfacecards),including
internalinterconnectandadministrativetraffic.
Load
Systemloadaveragefor1-minute,5-minute,and15-minuteperiods.
Swap
Percentageofswapspaceused.
QueryMetrics
TheQuerytabledisplaysqueriesthatwereactiveduringthespecifiedtimeperiod,includingqueriesthatstartedbeforeorfinishedafterthespecified
time.However,queriesthatarestillactivearenotincludedinthetable;thesequeriescanbeviewedontheQueryMonitorpage.
Thequerytablehasthefollowingcolumns:
QueryID
Anidentificationstringforthequery.IntheConsole,thislookslike“1295397846-56415-2”.
Status
Thefinalstatusofthequery.Thiscanbeoneofthefollowing:
Done
Cancelled
User
TheGreenplumDatabaseuserwhosubmittedthequery.
Database
Thenameofthedatabasethatwasqueried.
SubmitTime
Thetimethequerywassubmittedtothequeryplanner.
QueuedTime
Theamountoftimeaqueryspentinthequeuebeforeitwasexecuted.
RunTime
Theamountoftimethequeryrequiredtoproducearesult.
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EndTime
Thetimethequerycompletedorwascancelled.
CPUSkew
TheamountofCPUskew.CPUskewoccurswhenqueryexecutorprocessesforonesegmentuseadisproportionateamountofCPUcomparedto
processesforothersegmentsexecutingthequery.ThisvalueisthecoefficientofvariationfortheCPUusedbyprocessesrunningthisqueryoneach
segment,multipliedby100.Forexample,avalueof.95isshownas95.
RowSkew
Ameasureofrowskewinthesystem.Rowskewoccurswhenonesegmentproducesadisproportionatenumberofrowsforaquery.Thisvalueis
thecoefficientofvariationfortheRowsOutmetricofalliteratorsacrossallsegmentsforthisquery,multipliedby100.Forexample,avalueof.95is
shownas95.
Queue
Thenameoftheresourcequeueforthequery.
Priority
Eachqueryinheritsthepriorityassignedtoitsresourcequeue.
FormoreinformationaboutResourceQueuesandQueryPlans,refertotheGreenplumDatabaseAdministratorGuide.
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SegmentStatus
TheSegmentStatuspageprovidesahealthoverviewfortheGreenplumDatabasesegmentsanddetailsforeachprimaryandmirrorsegment.
SegmentSummary
SegmentHealth
SegmentTable
SegmentSummary
GreenplumDatabaseismostefficientwhenallsegmentsareoperatingintheirpreferredroles.TheSegmentSummarypaneltellsyoutheoverall
segmentstatusandifanymirrorsareactingasprimaries.
TheSegmentSummarypanelprovidesthefollowinginformation:
DatabaseState
Thedatabasestatecanbeoneofthefollowing:
Normal:Thedatabaseisfunctioningwithnomajorerrorsorperformanceissues.
Segment(s)Down:Thedatabaseisinchange-trackingmodeorresyncmode.Overallperformanceandsystemreliabilityisgreatlyreduced.See
thePivotalGreenplumDatabaseSystemAdministratorGuideforinformationaboutresolvingthiscondition.
DatabaseUnreachable:TheGreenplumPerformanceMonitoragentcannotconnecttothedatabase.Thedatabaseislikelydown.Seethe
PivotalGreenplumDatabaseSystemAdministratorGuidefortroubleshootinginformation.
Unbalanced:Somesegmentsarenotrunningintheirpreferredroles.Thatis,primariesarerunningasmirrorsandmirrorsarerunningas
primaries,resultinginunbalancedprocessing.
Resyncing:Thedatabaseisperformingarecovertyorrebalanceoperation.
MirrorsActingasPrimary
Thenumberofmirrorsegmentsactingasprimarysegments.
RecommendedActions
Suggestsactionstoperformtorestoretheclustertobalance.Theseinclude:
RecoverandRebalance
Rebalance
Theseactionsareexecutedfromthecommandlineusingthe gprecoverseg Greenplummanagementutility.See
GreenplumDatabaseUtilityReferenceformoreinformation.
gprecoverseg
inthePivotal
TotalSegments
ThetotalnumberofprimaryandmirrorsegmentsintheGreenplumcluster.
SegmentHosts
ThetotalnumberofsegmenthostsintheGreenplumcluster.
SegmentHealth
TheSegmentHealthpanelcontainschartsforGreenplumDatabasesegments’status,replicationmode,andpreferredroles.
Status
Numbersofsegmentsthataredownandup.
ReplicationMode
Achartthatshowsthenumberofsegmentsineachofthepossiblereplicationmodes.
NotSyncing:Theprimarysegmentandmirrorsegmentareactiveandallchangestotheprimarysegmenthavebeencopiedtothemirrorusinga
fileblockreplicationprocess.
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ChangeTracking:Ifaprimarysegmentisunabletocopychangestoitsmirrorsegmentusingthefilereplicationprocess,itlogstheunsent
changeslocallysotheycanbereplicatedwhenthemirroragainbecomesavailable.Thiscanhappenifamirrorsegmentgoesdownorifa
primarysegmentgoesdownanditsmirrorsegmentautomaticallyassumestheprimaryrole.
Resyncing:Whenadownsegmentisbroughtbackup,administratorsinitiatearecoveryprocesstoreturnittooperation.Therecoveryprocess
synchronizesthesegmentwiththeactiveprimaryandcopiesthechangesmissedwhilethesegmentwasdown.
Synced:Onceallmirrorsandtheirprimariesaresynchronized,thesystemstatebecomessynchronized.
PreferredRoles
TheredportionofthePreferredRolechartshowsthenumbersofsegmentsthatnotoperatingintheirpreferredprimaryormirrorroles.Ifthechartisnot
solidgreen,theperformanceoftheGreenplumclusterisnotoptimal.
Primaryandmirrorsegmentsaredistributedevenlyamongthesegmenthoststoensurethateachhostperformsanequivalentshareoftheworkand
primarysegmentsandtheirmirrorsegmentsresideondifferentsegmenthosts.Whenaprimarysegmentgoesdown,itsmirroronanotherhostinthe
clusterautomaticallyassumestheprimaryrole,increasingthenumberofprimarysegmentsrunningonthathost.Thisunevendistributionofthe
workloadwillaffectqueryperformanceuntilthedownsegmentisrestoredandthesegmentsarereturnedtotheiroriginal,preferred,roles.
SegmentTable
ThetableatthebottomoftheSegmentStatuspagecontainsadetailedrowforeveryprimaryandmirrorsegmentintheGreenplumCluster.Thetable
hasthefollowingcolumnsforeachsegment:
Hostname
Thenameofthesegmenthostwherethesegmentisrunning.
Address
Thenetworkinterfaceonthesegmenthostforthesegment.
Port
Theportnumberassignedtothesegment.
DBID
Theuniqueidentifierforthesegmentinstance.
ContentID
Thecontentidentifierforthesegment,from0tothenumberofsegmentsminus1.AprimarysegmentanditsmirrorhavethesameContentID.The
masterandstandbymaster,whichhaveContentID−1,areexcludedfromthetable.
Status
“UP”ifthesegmentisrunning,“DOWN”ifthesegmenthasfailedorisunreachable.
Role
Thesegment’scurrentrole,either“primary”or“mirror”.
PreferredRole
Thesegment’sintendedrole,either“primary”or“mirror”.
ReplicationMode
Thereplicationstatusforthesegment.SeeSegmentHealthforpossiblevalues.
LastEvent|[Total]
Thedateandtimeoflastsegmenthealth-relatedactivity.Clicktodisplayalistofrecentevents.
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StorageStatus
TheStorageStatuspageshowscurrenthistoricaldiskusageforGreenplummasterandsegmenthosts.
DiskUsageSummary
Youcanseecurrentdiskspaceinuse,spacefree,andtotalspaceintheDiskUsageSummarypanel.Diskspacemetricsforthesegmenthosts(GP
Segments)andthemaster(GPMaster)areshowninseparatebarcharts.
TheGPSegmentsbarchartshowscombineddiskspaceforallsegments.
TheGPMastersbarchartshowscombineddiskspaceformasterandstandbymaster.
Hoverovereitherofthechartstoseethespaceused,free,andtotalingigabytesandasapercentageofthetotal.
GPSegmentsUsageHistory
TheGPSegmentsUsageHistorypanelpresentsachartofpercentageofdiskspaceinuseforthetimeperiodsetbythecontrolinthepanelheader.
Hoveroverthecharttoseethepercentagediskinuseonanygivenpoint.
StorageStatusTable
TheStorageStatustableprovidescurrentdiskspaceusagemetricsforeachhostandbydatadirectorywithinhosts.
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