Orchestration for Sysadmins

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1、OrchestrationforSysadminsAndreaLuzzardi/VictorVieuxSoftwareEngineers@dockerAgenda•IntroductiontoDockerSwarm•SwarmFaultTolerance:Replication•IntegratingSwarmwithMesos•ProvisioningSwarmwithDockerMachine“Runningcontainersonmultiplehosts.”Swarminanutshell•ExposesseveralDockerEnginesasasinglevirtualEng

2、ine•ServesthestandardDockerAPI•Extremelyeasytogetstarted•BatteriesincludesbutswappableTimelineOctProofofConceptGlobalHackDayOpenProposalNovDockerConEUDecOpenRepositoryJanFirstReleaseCandidateFebSwarmBetaRelease0.2.0ReleaseAprJun0.3.0ReleaseSettingupSwarm•Createacluster:-$swarmcreate•Addnodestoaclu

3、ster:-$swarmjoin--advertise=token://•StartSwarm:-$swarmmanage-Htoken://Oryoucanuseyourownetcd,zookeeperorconsulSwarmScheduler•ResourceManagement-Memory,CPU,Network•Fitcontainers-Applyfilterstoexcludenodes-Useastrategytorankandpickthebestnode•SchedulingKnobs-Constra

4、ints-Affinities“BatteriesIncludedbutSwappable”DockerSwarm+Mesos•Experimental•DockerSwarmactasaMesosFramework•Incollaborationwith$>swarmmanage--clustermesos-experimentalMesosCluster++++++++++++++MesosSlavesMesosMastersMarathonMesosCLIMesosCluster+DockerSwarm++++++++++++++MesosSlav

5、esMesosMastersDockerCLIMarathonMesosCLIMesosCluster+DockerSwarm++++++++++++++MesosSlaveskitematiccomposeMesosMastersshipyardDockerCLIMarathonMesosCLIBYSwarmManagerReplicationReplication•SwarmManagerisaSinglePointofFailureSwarmClusterManageAPIRequestDockerCLIReplication•Uponfailureitbecomesimpossib

6、letomanagethecluster•Clustercontinuestorunun-managedSwarmClusterManageAPIRequestDockerCLIReplication•Oneprimary,manyreplicas•LeaderElectionbuiltontopofConsul,etcd,ZooKeeper•ReplicasforwardAPIcallstoprimarySwarmCluster•CLIcantalktoanyinstanceManagePrimaryReplicaReplicaForwardAPIRequestDockerCLIRepl

7、ication•Replicasmonitorhealthofprimaryinstance•Leadergetsre-electeduponprimaryfailureSwarmClusterManagePrimaryReplicaReplicaForwardAPIRequestDockerCLIReplication•Onereplicapromotedtoprimary•Otherreplicasnotifiedo