using-openstack-in-a-traditional-hosting-environment

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1、UsingOpenStackInATraditonalHostngEnvironmentJunPark(Ph.D.),Sr.SystemsArchitectMikeWilson,Sr.SystemsArchitectEIG/BluehostOpenStackSummit2013•Scale@10xwhatwewereinaboutayear’stme•Neededasystemtomanageitall•Provisioningthesesystemshadtobeautomated•Systemhadtoscale

2、tomultpledatacenters•Btw,wehave2monthstocomeupwiththisEIG/Bluehost2Highlevelrequirements•Centralizedmanagement,horizontalscalability.•Abstractonsforphysicalandlogicaldeploymentsofdevicesandresources.•Open-sourceprojectwithlotsofsupportandmomentum•TypicalCloudfe

3、atures(migraton,imaging,provisioning,etc.)EIG/Bluehost3EasytransitonintofuturecloudoferingwithsupportforindustrystandardAPIs=OpenStack!BluehostEnvironment•Scale–Morethan10,000physicalservers–Addinghundredsofnodesperday•Network–PublicnetworkdirectlyattachedtoVMs

4、–PlanonaddingprivatenetworklaterEIG/Bluehost4•OpenStack/FolsomComponents–Nova(compute,api,scheduler)–Quantum(network)–AMQP:Qpid(messaging)–Mysql(db)Outline•Scalability/Stability•RethinkQuantumNetwork•OperatonalIssues•Wrap-up/ConclusionsEIG/Bluehost5WhyDifficult

5、ToScaleup?•Componentsthatdon’tscaleLookatthatline!–Messagingsystem–Mysqlserver–HeavyAPIs•HardtoDiagnose–Nosimulator/emulatorforhighscalabilitytestng–Noquanttatveguideastohowtoscaleup–NodetailederrormessageorevennotatallEIG/Bluehost6–Requiresdetailedknowledgeofc

6、odebaseNovaEnhancements•Monitoring/troubleshootng–Addedserviceping(similartogrizzly)–Additonaltask_states–Bettererrorstoinstance_faults•Functonality–AddedLVMresizeandinjecton–Addedstop_softandstop_hardsimilartoreboot•Stability/ScalabilityEIG/Bluehost7–Somebugfi

7、xestoOVSVIFdriver–AddedcustomschedulerMySQL/InnodbConcurrency•Novabehavior–DirectconnectontoDB(addressedingrizzlythough)–TooMANYqueries;muchmorereadthanwrite–Somequeriesoftenreturnhugenumberofresults–Periodicityofloadsduetoperiodictasks•Mysqlbehavior–innodb_thr

8、ead_concurrency=numofthreadsEIG/Bluehostthatcanexecutequeriesinthequeue8–innodb_concurrency_tckets=numberofrowsyoucanreturnbeforerequeue(default500!)–Withdefaultsettingsyour