desiredArchitecture_of_Kubernetes

Manageapplications,notmachines

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Container:Asealed appl ication package(Docker)

Pod:Asmal lgroupof tightlycoupled Containersexample:content syncer&web server

Control ler:Aloopthatdrivesthe currentstatetowardsthe desired stateexample: repl ication control ler

Service:Aset of running podsthatworktogetherexample: load-balanced backends

Labels: Identifying metadata attached to other objectsexample:phase=canary vs.phase=prod

Selector:Aqueryagainst labels,producinga set resultexample:al l podswherelabel phase==prod

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Declarative>imperative:State your desired results

Control loops:Observe, rectify, repeat

Modularity:Components, interfaces,&plugins

Legacycompatible:Requiringappsto change is a non-starter

Network-centric: IP addresses are cheap

Nogrouping: Labelsaretheonlygroups

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Google confidential │ Do not distribute