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1、點擊添加文本點擊添加文本點擊添加文本點擊添加文本容器技術概述Docker起源于dotCloud的內(nèi)部項目,基于Cloudlets,2013年3月發(fā)布,成員有SolomonHykes,AndreaLuzzardi,F(xiàn)rancois-XavierBourlet。2014年3月13日的版本放棄原先的LXC運行環(huán)境,而改成用Go語言寫的libcontainer。Docker在這么短的時間內(nèi)如此快速廣泛被IT行業(yè)接受采納在歷史上前所未有。4個月內(nèi),150多個開源項目,1000多個常見應用Docker化,幾乎所有的PaaS紛紛掉頭接納D
2、ockerDocker技術的破壞性橫跨幾乎IT的每個領域(Containerizationisrapidlytakingoverasthede-factomechanismforpackaginganddeployingdistributedapplications,creatingwidespreaddisruptiontovirtuallyeverypartofIT)容器技術的核心價值TheexcitementandpopularityofDockerhastodowithhowthetechnologyprovides
3、aconsistentmechanismtobuild,deploy,andscaleapplicationcomponentswithisolatedsystemresources.除性能優(yōu)之外,一致性和資源隔離是其核心價值StaticwebsiteWebfrontendUserDBQueueAnalyticsDBBackgroundworkersAPIendpointnginx1.5+modsecurity+openssl+bootstrap2postgresql+pgv8+v8hadoop+hive+thrift+Op
4、enJDKRuby+Rails+sass+UnicornRedis+redis-sentinelPython3.0+celery+pyredis+libcurl+ffmpeg+libopencv+nodejs+phantomjsPython2.7+Flask+pyredis+celery+psycopg+postgresql-clientDevelopmentVMQAserverPublicCloudDisasterrecoveryContributor’slaptopProductionServersIT運維的挑戰(zhàn)各種不同
5、技術框架硬件的多樣性ProductionClusterCustomerDataCenter應用和依賴的服務之間的交互如何解決遷徙部署的便捷?StaticwebsiteWebfrontendBackgroundworkersUserDBAnalyticsDBQueueDevelopmentVMQAServerSingleProdServerOnsiteClusterPublicCloudContributor’slaptopCustomerServersDocker解決NXN問題和集裝箱的比較90%的物資通過集裝箱來運輸極大減
6、少裝卸成本極大減少運輸成本(from>25%to<3%)全球標準化每年運輸2億集裝箱物資Docker運作的基本原理SourceCodeRepositoryDockerfileForADockerEngineDockerContainerImageRegistryBuildDockerHost2OS2(Linux)ContainerAContainerBContainerCContainerAPushSearchPullRunHost1OS(Linux)DevOps的主流工具Docker的核心價值小結PhysicalConta
7、inersDockerContentAgnosticThesamecontainercanholdalmostanytypeofcargoCanencapsulateanypayloadanditsdependenciesHardwareAgnosticStandardshapeandinterfaceallowsamecontainertomovefromshiptotraintosemi-trucktowarehousetocranewithoutbeingmodifiedoropenedUsingoperatingsy
8、stemprimitives(e.g.LXC)canrunconsistentlyonvirtuallyanyhardware—VMs,baremetal,openstack,publicIAAS,etc.—withoutmodificationContentIsolationandInt