CD In The Enterprise - ThoughtWorks - TimBrown

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1、AUTOMATINGOUTOFFAILUREAtaleofrescuingafailingenterpriseapplicationdeploymentprojectin6weeksusingAnsibleandGo.cdABITOFCONTEXT▫︎Globalfinancialservicescompany▫︎6monthsinvestedontoolselection▫︎Another3monthsinvestedtryingtomakeitwork2THEACCIDENTALMEETINGGiveme4ThoughtWorkersand4ofyourpeopleandwe’llautom

2、atethis#%@*thingin6weeks!3ANSIBLE▫︎Agent-lessITautomationsystem▫︎Canperformorchestration,configuration,anddeployment▫︎Minimaldependencies:Python,SSH▫︎Terselanguage,YAMLformat4ABITMORECONTEXT▫︎Anewproductlaunchisimminent▫︎Inanewdatacenter▫︎Thatdoesn’texistyet▫︎Hardwarearrivesin12weeks!▫︎Theproductlaun

3、chwillbeatriskifeverythingisn’tworkinginafewdays▫︎Thoughtwehad4services,butdiscoveredthereare405D’OH!6RE-CONFIRMSCOPE▫︎Replacingtwoexistingtools▫︎Orchestrator▫︎InstallationTool▫︎Retainingfourexistingtools▫︎CustomCMDB▫︎Artifactrepository▫︎Buildtool▫︎CI▫︎~40deployableartifacts;39Roles7APPLICATIONSTACK

4、-LAYERINGUser-landServiceComponentConfigNosystem/OSpackagingService-specificuserServiceComponentBinariesService-specificdirectorystructureAllcomponentsJAR/ZippackagedandstoredinartifactrepositoryHTTPdConfigalwaysisolated.ContainerConfigHTTPdBinariesContainerBinariesshareableduringinstall.isolatedatruntim

5、e.JVMInstallToollegacy.willberemoved.8APPLICATIONSTACK-MAPPINGTOANSIBLEEachcomponentisanAnsibleroleServiceComponentConfigServicerolepullstogetheralldependentrolesApproximately40componentscomprisethewholeServiceComponentBinariesapplication!HTTPdConfigAsinglenodemayhavemultipleservices‘stacked’onitDevel

6、opmentinEurope.(source,artifacts,CMDB)ContainerConfigProductiondatacenterinNorthAmerica.Connectedbybandwidth-constrainedWANHTTPdBinariesContainerBinariesThiscanbemultipleGBinsizeJVMInstallTool9STRATEGY▫︎DepthvsBreadth?!▫︎Divide&Conquer▫︎CMDB/Ansiblecompatibility▫︎ReplacementofInstallationTool▫︎Define&

7、stabilizedevelopmentworkflow10OBSTACLESFindingthe‘appropriate’artifactwasdifficultUnfriendlynetworkingWindows…withoutadminrightsInstallToolwasaconfusing40KlinesofBash11SEPARATIONOFCONCERNSArtifactRepoart