![\"components-of-kubernetes.png\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d237837434c4406c2ae0b\/4-0.png\" "\\"\\"")
<\/div>\nkube-apiserver\u7b80\u4ecb<\/h1>\n![\"](\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/657d237837434c4406c2ae0b\/6-0.png\" "\\"\\"")
<\/div>\nKube-apiserver\u7684\u5b9e\u73b0<\/h1>\n
\u4eca\u56de\u306f kubernetes v1.28.2 \u3092\u53c2\u8003\u306b\u8ffd\u3063\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u5165\u53e3<\/h2>\n
kube-apiserver\u7684\u5165\u53e3\u70b9\u4f4d\u4e8ehttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/apiserver.go\u4e2d\uff0c\u4f7f\u7528app.NewAPIServerCommand()\u51fd\u6570\u521b\u5efa\u5e76\u6267\u884ckube-apiserver\u7684cobra.Command\u3002<\/p>\n
func main() {\r\n\tcommand := app.NewAPIServerCommand()\r\n\tcode := cli.Run(command)\r\n\tos.Exit(code)\r\n}\r\n<\/code><\/pre>\n\u5b9f\u884c\u6642\u306e\u6319\u52d5<\/h2>\n
cli.Run(command)\u304c\u547c\u3070\u308c\u308b\u3068 https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/server.go#L78 \u306b\u8a18\u8ff0\u3055\u308c\u305fcobra.Command\u306eRunE\u306e\u5b9f\u88c5\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002RunE \u5185\u3067\u306f\u30d5\u30e9\u30b0\u3084\u30ed\u30b0\u306a\u3069\u306e\u51e6\u7406\u3092\u884c\u3044\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3059\u308bRun\u95a2\u6570\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u3053\u306eRun\u95a2\u6570\u304c kube-apiserver \u306e\u30e1\u30a4\u30f3\u30ed\u30b8\u30c3\u30af\u3092\u542b\u3080\u5b9f\u88c5\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
func Run(opts options.CompletedOptions, stopCh <-chan struct{}) error {\r\n\t\/\/ To help debugging, immediately log version\r\n\tklog.Infof(\"Version: %+v\", version.Get())\r\n\r\n\tklog.InfoS(\"Golang settings\", \"GOGC\", os.Getenv(\"GOGC\"), \"GOMAXPROCS\", os.Getenv(\"GOMAXPROCS\"), \"GOTRACEBACK\", os.Getenv(\"GOTRACEBACK\"))\r\n\r\n\tconfig, err := NewConfig(opts)\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\tcompleted, err := config.Complete()\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\tserver, err := CreateServerChain(completed)\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\r\n\tprepared, err := server.PrepareRun()\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\r\n\treturn prepared.Run(stopCh)\r\n}\r\n<\/code><\/pre>\n\u3053\u306e\u95a2\u6570\u306eNewConfig()\u3067\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u60c5\u5831\u3092\u683c\u7d0d\u3059\u308b\u69cb\u9020\u4f53\u3092\u4f5c\u6210\u3057\u3001config.Complete()\u3067\u8db3\u308a\u306a\u3044\u8a2d\u5b9a\u60c5\u5831\u3092\u57cb\u3081\u307e\u3059\u3002CreateServerChain()\u3067\u306f\u524d\u8ff0\u3057\u305f\u8a8d\u8a3c\u8a8d\u53ef\u306a\u3069\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u524d\u51e6\u7406\u3092\u884c\u3046 ServerChain \u3092\u4f5c\u6210\u3057\u3001PrepareRun()\u3067 Server \u3092\u5b9f\u884c\u3059\u308b\u306e\u306b\u5fc5\u8981\u306a\u51e6\u7406\u3092\u3044\u304f\u3064\u304b\u5b9f\u884c\u3057\u3001Run()\u3067\u5b9f\u969b\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u6570\u306b\u3064\u3044\u3066\u6398\u308a\u4e0b\u3052\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
\u65b0\u914d\u7f6e<\/h3>\n
NewConfig \u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/config.go#L69 \u306b\u5b9f\u88c5\u304c\u3042\u308a API Server\uff08Control Plane\uff09\u3001API Extension Server\u3001Aggregator Server \u306e\u8a2d\u5b9a\u7528\u306e Config \u69cb\u9020\u4f53\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
func NewConfig(opts options.CompletedOptions) (*Config, error) {\r\n\tc := &Config{\r\n\t\tOptions: opts,\r\n\t}\r\n\r\n\tcontrolPlane, serviceResolver, pluginInitializer, err := CreateKubeAPIServerConfig(opts)\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tc.ControlPlane = controlPlane\r\n\r\n\tapiExtensions, err := apiserver.CreateAPIExtensionsConfig(*controlPlane.GenericConfig, controlPlane.ExtraConfig.VersionedInformers, pluginInitializer, opts.CompletedOptions, opts.MasterCount,\r\n\t\tserviceResolver, webhook.NewDefaultAuthenticationInfoResolverWrapper(controlPlane.ExtraConfig.ProxyTransport, controlPlane.GenericConfig.EgressSelector, controlPlane.GenericConfig.LoopbackClientConfig, controlPlane.GenericConfig.TracerProvider))\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tc.ApiExtensions = apiExtensions\r\n\r\n\taggregator, err := createAggregatorConfig(*controlPlane.GenericConfig, opts.CompletedOptions, controlPlane.ExtraConfig.VersionedInformers, serviceResolver, controlPlane.ExtraConfig.ProxyTransport, controlPlane.ExtraConfig.PeerProxy, pluginInitializer)\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tc.Aggregator = aggregator\r\n\r\n\treturn c, nil\r\n}\r\n<\/code><\/pre>\n\u914d\u7f6e\u5b8c\u6210<\/h3>\n
config.Complete\u51fd\u6570\u7684\u5b9e\u73b0\u4f4d\u4e8ehttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/config.go#L56\uff0c\u5b83\u5c06\u5404\u79cd\u670d\u52a1\u5668\u7684Config\u7ed3\u6784\u4f53\u8d4b\u503c\u7ed9CompletedConfig\uff0c\u5e76\u586b\u5145\u4e86\u542f\u52a8\u670d\u52a1\u5668\u6240\u9700\u7684\u6240\u6709\u914d\u7f6e\u503c\u3002<\/p>\n
func (c *Config) Complete() (CompletedConfig, error) {\r\n\treturn CompletedConfig{&completedConfig{\r\n\t\tOptions: c.Options,\r\n\r\n\t\tAggregator: c.Aggregator.Complete(),\r\n\t\tControlPlane: c.ControlPlane.Complete(),\r\n\t\tApiExtensions: c.ApiExtensions.Complete(),\r\n\r\n\t\tExtraConfig: c.ExtraConfig,\r\n\t}}, nil\r\n}\r\n<\/code><\/pre>\nCreateServerChain<\/h3>\n
CreateServerChain \u306e\u5b9f\u88c5\u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/server.go#L174 \u306b\u5b9f\u88c5\u304c\u3042\u308a\u3001API Extensions Server \u3068 API Server \u3092\u4f5c\u6210\u3057 Aggregator Server \u306b\u7d71\u5408\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a API Extension Server \u3084 API Server \u3067\u4f5c\u6210\u3057\u305f HTTP \u30cf\u30f3\u30c9\u30e9\u30fc\u306a\u3069\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
func CreateServerChain(config CompletedConfig) (*aggregatorapiserver.APIAggregator, error) {\r\n\tnotFoundHandler := notfoundhandler.New(config.ControlPlane.GenericConfig.Serializer, genericapifilters.NoMuxAndDiscoveryIncompleteKey)\r\n\tapiExtensionsServer, err := config.ApiExtensions.New(genericapiserver.NewEmptyDelegateWithCustomHandler(notFoundHandler))\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tcrdAPIEnabled := config.ApiExtensions.GenericConfig.MergedResourceConfig.ResourceEnabled(apiextensionsv1.SchemeGroupVersion.WithResource(\"customresourcedefinitions\"))\r\n\r\n\tkubeAPIServer, err := config.ControlPlane.New(apiExtensionsServer.GenericAPIServer)\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\r\n\t\/\/ aggregator comes last in the chain\r\n\taggregatorServer, err := createAggregatorServer(config.Aggregator, kubeAPIServer.GenericAPIServer, apiExtensionsServer.Informers, crdAPIEnabled)\r\n\tif err != nil {\r\n\t\t\/\/ we don't need special handling for innerStopCh because the aggregator server doesn't create any go routines\r\n\t\treturn nil, err\r\n\t}\r\n\r\n\treturn aggregatorServer, nil\r\n}\r\n<\/code><\/pre>\n\u51c6\u5907\u597d\u8dd1<\/h3>\n
PreparedRun \u5728 https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/staging\/src\/k8s.io\/kube-aggregator\/pkg\/apiserver\/apiserver.go#L400 \u8fdb\u884c\u4e86\u5b9e\u73b0\uff0c\u5b83\u5b9e\u73b0\u4e86\u542f\u52a8\u805a\u5408\u5668\u670d\u52a1\u5668\u6240\u9700\u7684\u7ec4\u4ef6\u3002\u5173\u4e8e\u5177\u4f53\u5185\u5bb9\uff0c\u672c\u6587\u4e0d\u4f1a\u8be6\u8ff0\uff0c\u4f46\u5982\u679c\u4f60\u60f3\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u805a\u5408\u53d1\u73b0\u6587\u6863(aggregated discovery document)\u548cKubernetes API\u5065\u5eb7\u7aef\u70b9(Kubernetes API health endpoints)\u3002<\/p>\n
\u8dd1\u6b65<\/h3>\n
Run \u306e\u5b9f\u88c5\u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/staging\/src\/k8s.io\/kube-aggregator\/pkg\/apiserver\/apiserver.go#L466 \u306b\u8a18\u8f09\u3057\u3066\u304a\u308a\u3001\u3053\u306e\u95a2\u6570\u304c\u547c\u3073\u51fa\u3057\u3066\u3044\u308b s.runnable.Run \u306e\u5b9f\u88c5\u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/staging\/src\/k8s.io\/apiserver\/pkg\/server\/genericapiserver.go#L496 \u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u30b5\u30fc\u30d0\u30fc\u306e\u8d77\u52d5\u306b\u95a2\u3057\u3066\u306e\u5b9f\u88c5\u304c\u66f8\u304b\u308c\u3066\u304a\u308a\u3053\u3053\u306f\u672c\u8a18\u4e8b\u306e\u30e1\u30a4\u30f3\u3068\u306a\u308b\u306e\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u542f\u52a8\u670d\u52a1\u5668\u5904\u7406<\/h2>\n
s.runnable.Run\u306e\u5b9f\u88c5 \u306f\u3068\u3066\u3082\u9577\u304f\u8aad\u3080\u306e\u304c\u5927\u5909\u3067\u3059\u304c\u30b5\u30fc\u30d0\u30fc\u8d77\u52d5\u51e6\u7406\u306f\u4ee5\u4e0b\u306e NonBlockingRun \u95a2\u6570\u306b\u307e\u3068\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
stoppedCh, listenerStoppedCh, err := s.NonBlockingRun(stopHttpServerCh, shutdownTimeout)\r\nif err != nil {\r\n return err\r\n}\r\n<\/code><\/pre>\nNonBlockingRun \u306f non-blocking-scoket \u3092\u7528\u3044\u305f\u975e\u540c\u671f\u901a\u4fe1\u3092\u884c\u3046\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3059\u308b\u95a2\u6570\u3067\u3001\u3053\u306e\u3046\u3061\u4ee5\u4e0b\u306e\u3088\u3046\u306a s.SecureServingInfo.Serve \u95a2\u6570\u306b\u30b5\u30fc\u30d0\u30fc\u8d77\u52d5\u51e6\u7406\u304c\u307e\u3068\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
stoppedCh, listenerStoppedCh, err = s.SecureServingInfo.Serve(s.Handler, shutdownTimeout, internalStopCh)\r\nif err != nil {\r\n close(internalStopCh)\r\n return nil, nil, err\r\n}\r\n<\/code><\/pre>\n\u305d\u3057\u3066\u3001s.SecureServingInfo.Serve \u306b\u30b5\u30fc\u30d0\u30fc\u306b\u95a2\u3059\u308b\u69cb\u9020\u4f53\u3084\u8a2d\u5b9a\u306a\u3069\u3092\u884c\u3046\u5b9f\u88c5\u304c\u3042\u308a\u6700\u7d42\u884c\u306b\u5f53\u305f\u308b RunServer \u3067\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b RunServer \u3067 server.Serve\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3053\u3068\u3067\u30b5\u30fc\u30d0\u30fc\u304c\u8d77\u52d5\u3057\u307e\u3059\u3002<\/p>\n
func RunServer(\r\n\tserver *http.Server,\r\n\tln net.Listener,\r\n\tshutDownTimeout time.Duration,\r\n\tstopCh <-chan struct{},\r\n) (<-chan struct{}, <-chan struct{}, error) {\r\n\tif ln == nil {\r\n\t\treturn nil, nil, fmt.Errorf(\"listener must not be nil\")\r\n\t}\r\n\r\n\t\/\/ Shutdown server gracefully.\r\n\tserverShutdownCh, listenerStoppedCh := make(chan struct{}), make(chan struct{})\r\n\tgo func() {\r\n\t\tdefer close(serverShutdownCh)\r\n\t\t<-stopCh\r\n\t\tctx, cancel := context.WithTimeout(context.Background(), shutDownTimeout)\r\n\t\tserver.Shutdown(ctx)\r\n\t\tcancel()\r\n\t}()\r\n\r\n\tgo func() {\r\n\t\tdefer utilruntime.HandleCrash()\r\n\t\tdefer close(listenerStoppedCh)\r\n\r\n\t\tvar listener net.Listener\r\n\t\tlistener = tcpKeepAliveListener{ln}\r\n\t\tif server.TLSConfig != nil {\r\n\t\t\tlistener = tls.NewListener(listener, server.TLSConfig)\r\n\t\t}\r\n\r\n\t\terr := server.Serve(listener)\r\n\r\n\t\tmsg := fmt.Sprintf(\"Stopped listening on %s\", ln.Addr().String())\r\n\t\tselect {\r\n\t\tcase <-stopCh:\r\n\t\t\tklog.Info(msg)\r\n\t\tdefault:\r\n\t\t\tpanic(fmt.Sprintf(\"%s due to error: %v\", msg, err))\r\n\t\t}\r\n\t}()\r\n\r\n\treturn serverShutdownCh, listenerStoppedCh, nil\r\n}\r\n<\/code><\/pre>\n\u307e\u3068\u3081<\/h1>\n
\u4eca\u56de\u306f kube-apiserver \u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u304b\u3089\u5b9f\u969b\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3055\u305b\u308b\u51e6\u7406\u307e\u3067\u5185\u90e8\u5b9f\u88c5\u3092\u8ffd\u3063\u3066\u3044\u304d\u307e\u3057\u305f\u3002\u30b5\u30fc\u30d0\u30fc\u8d77\u52d5\u51e6\u7406\u307e\u3067\u8ffd\u3046\u3053\u3068\u3067 kube-apiserver\u306e\u5b9f\u88c5\u306e\u5168\u4f53\u50cf\u3092\u63b4\u3081\u305f\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002\u4eca\u5f8c\u6a5f\u4f1a\u304c\u3042\u308c\u3070\u30cf\u30f3\u30c9\u30e9\u30fc\u306e\u51e6\u7406\u3084\u4eca\u56de\u7701\u7565\u3057\u305f\u5185\u5bb9\u3082\u542b\u3081\u3066\u307e\u3068\u3081\u3089\u308c\u305f\u3089\u3068\u601d\u3044\u307e\u3059\u3002\u6700\u5f8c\u307e\u3067\u304a\u4ed8\u304d\u5408\u3044\u9802\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n
\u5f15\u7528\u8d44\u6599<\/h1>\n\n- \n
Kubernetes<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Kube API Server<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Kube API Server<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
aggregated discovery document<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
Kubernetes API health endpoints<\/ul>\n","protected":false},"excerpt":{"rendered":"\u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662fCyberAgent 24\u5352\u5185\u5b9a\u8005 Advent Calendar\u7684\u7b2c12\u5929\u6587\u7ae0\u3002 \u30b3\u30f3\u30c6\u30ca\u30aa […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35513","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
\u76f4\u5230 kube-apiserver \u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u76f4\u5230-kube-apiserver-\u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u76f4\u5230 kube-apiserver \u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662fCyberAgent 24\u5352\u5185\u5b9a\u8005 Advent Calendar\u7684\u7b2c12\u5929\u6587\u7ae0\u3002 \u30b3\u30f3\u30c6\u30ca\u30aa […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u76f4\u5230-kube-apiserver-\u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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<\/div>\nKube-apiserver\u7684\u5b9e\u73b0<\/h1>\n
\u4eca\u56de\u306f kubernetes v1.28.2 \u3092\u53c2\u8003\u306b\u8ffd\u3063\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u5165\u53e3<\/h2>\n
kube-apiserver\u7684\u5165\u53e3\u70b9\u4f4d\u4e8ehttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/apiserver.go\u4e2d\uff0c\u4f7f\u7528app.NewAPIServerCommand()\u51fd\u6570\u521b\u5efa\u5e76\u6267\u884ckube-apiserver\u7684cobra.Command\u3002<\/p>\n
func main() {\r\n\tcommand := app.NewAPIServerCommand()\r\n\tcode := cli.Run(command)\r\n\tos.Exit(code)\r\n}\r\n<\/code><\/pre>\n\u5b9f\u884c\u6642\u306e\u6319\u52d5<\/h2>\n
cli.Run(command)\u304c\u547c\u3070\u308c\u308b\u3068 https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/server.go#L78 \u306b\u8a18\u8ff0\u3055\u308c\u305fcobra.Command\u306eRunE\u306e\u5b9f\u88c5\u304c\u547c\u3073\u51fa\u3055\u308c\u307e\u3059\u3002RunE \u5185\u3067\u306f\u30d5\u30e9\u30b0\u3084\u30ed\u30b0\u306a\u3069\u306e\u51e6\u7406\u3092\u884c\u3044\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3059\u308bRun\u95a2\u6570\u3092\u5b9f\u884c\u3057\u307e\u3059\u3002\u3053\u306eRun\u95a2\u6570\u304c kube-apiserver \u306e\u30e1\u30a4\u30f3\u30ed\u30b8\u30c3\u30af\u3092\u542b\u3080\u5b9f\u88c5\u3068\u306a\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
func Run(opts options.CompletedOptions, stopCh <-chan struct{}) error {\r\n\t\/\/ To help debugging, immediately log version\r\n\tklog.Infof(\"Version: %+v\", version.Get())\r\n\r\n\tklog.InfoS(\"Golang settings\", \"GOGC\", os.Getenv(\"GOGC\"), \"GOMAXPROCS\", os.Getenv(\"GOMAXPROCS\"), \"GOTRACEBACK\", os.Getenv(\"GOTRACEBACK\"))\r\n\r\n\tconfig, err := NewConfig(opts)\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\tcompleted, err := config.Complete()\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\tserver, err := CreateServerChain(completed)\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\r\n\tprepared, err := server.PrepareRun()\r\n\tif err != nil {\r\n\t\treturn err\r\n\t}\r\n\r\n\treturn prepared.Run(stopCh)\r\n}\r\n<\/code><\/pre>\n\u3053\u306e\u95a2\u6570\u306eNewConfig()\u3067\u30b5\u30fc\u30d0\u30fc\u306e\u8a2d\u5b9a\u60c5\u5831\u3092\u683c\u7d0d\u3059\u308b\u69cb\u9020\u4f53\u3092\u4f5c\u6210\u3057\u3001config.Complete()\u3067\u8db3\u308a\u306a\u3044\u8a2d\u5b9a\u60c5\u5831\u3092\u57cb\u3081\u307e\u3059\u3002CreateServerChain()\u3067\u306f\u524d\u8ff0\u3057\u305f\u8a8d\u8a3c\u8a8d\u53ef\u306a\u3069\u306e\u30ea\u30af\u30a8\u30b9\u30c8\u306e\u524d\u51e6\u7406\u3092\u884c\u3046 ServerChain \u3092\u4f5c\u6210\u3057\u3001PrepareRun()\u3067 Server \u3092\u5b9f\u884c\u3059\u308b\u306e\u306b\u5fc5\u8981\u306a\u51e6\u7406\u3092\u3044\u304f\u3064\u304b\u5b9f\u884c\u3057\u3001Run()\u3067\u5b9f\u969b\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u3053\u308c\u3089\u306e\u95a2\u6570\u306b\u3064\u3044\u3066\u6398\u308a\u4e0b\u3052\u3066\u3044\u304d\u307e\u3059\u3002<\/p>\n
\u65b0\u914d\u7f6e<\/h3>\n
NewConfig \u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/config.go#L69 \u306b\u5b9f\u88c5\u304c\u3042\u308a API Server\uff08Control Plane\uff09\u3001API Extension Server\u3001Aggregator Server \u306e\u8a2d\u5b9a\u7528\u306e Config \u69cb\u9020\u4f53\u3092\u4f5c\u6210\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
func NewConfig(opts options.CompletedOptions) (*Config, error) {\r\n\tc := &Config{\r\n\t\tOptions: opts,\r\n\t}\r\n\r\n\tcontrolPlane, serviceResolver, pluginInitializer, err := CreateKubeAPIServerConfig(opts)\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tc.ControlPlane = controlPlane\r\n\r\n\tapiExtensions, err := apiserver.CreateAPIExtensionsConfig(*controlPlane.GenericConfig, controlPlane.ExtraConfig.VersionedInformers, pluginInitializer, opts.CompletedOptions, opts.MasterCount,\r\n\t\tserviceResolver, webhook.NewDefaultAuthenticationInfoResolverWrapper(controlPlane.ExtraConfig.ProxyTransport, controlPlane.GenericConfig.EgressSelector, controlPlane.GenericConfig.LoopbackClientConfig, controlPlane.GenericConfig.TracerProvider))\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tc.ApiExtensions = apiExtensions\r\n\r\n\taggregator, err := createAggregatorConfig(*controlPlane.GenericConfig, opts.CompletedOptions, controlPlane.ExtraConfig.VersionedInformers, serviceResolver, controlPlane.ExtraConfig.ProxyTransport, controlPlane.ExtraConfig.PeerProxy, pluginInitializer)\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tc.Aggregator = aggregator\r\n\r\n\treturn c, nil\r\n}\r\n<\/code><\/pre>\n\u914d\u7f6e\u5b8c\u6210<\/h3>\n
config.Complete\u51fd\u6570\u7684\u5b9e\u73b0\u4f4d\u4e8ehttps:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/config.go#L56\uff0c\u5b83\u5c06\u5404\u79cd\u670d\u52a1\u5668\u7684Config\u7ed3\u6784\u4f53\u8d4b\u503c\u7ed9CompletedConfig\uff0c\u5e76\u586b\u5145\u4e86\u542f\u52a8\u670d\u52a1\u5668\u6240\u9700\u7684\u6240\u6709\u914d\u7f6e\u503c\u3002<\/p>\n
func (c *Config) Complete() (CompletedConfig, error) {\r\n\treturn CompletedConfig{&completedConfig{\r\n\t\tOptions: c.Options,\r\n\r\n\t\tAggregator: c.Aggregator.Complete(),\r\n\t\tControlPlane: c.ControlPlane.Complete(),\r\n\t\tApiExtensions: c.ApiExtensions.Complete(),\r\n\r\n\t\tExtraConfig: c.ExtraConfig,\r\n\t}}, nil\r\n}\r\n<\/code><\/pre>\nCreateServerChain<\/h3>\n
CreateServerChain \u306e\u5b9f\u88c5\u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/cmd\/kube-apiserver\/app\/server.go#L174 \u306b\u5b9f\u88c5\u304c\u3042\u308a\u3001API Extensions Server \u3068 API Server \u3092\u4f5c\u6210\u3057 Aggregator Server \u306b\u7d71\u5408\u3057\u307e\u3059\u3002\u3053\u308c\u306b\u3088\u308a API Extension Server \u3084 API Server \u3067\u4f5c\u6210\u3057\u305f HTTP \u30cf\u30f3\u30c9\u30e9\u30fc\u306a\u3069\u3092\u5236\u5fa1\u3059\u308b\u3053\u3068\u3092\u53ef\u80fd\u3068\u3057\u3066\u3044\u307e\u3059\u3002<\/p>\n
func CreateServerChain(config CompletedConfig) (*aggregatorapiserver.APIAggregator, error) {\r\n\tnotFoundHandler := notfoundhandler.New(config.ControlPlane.GenericConfig.Serializer, genericapifilters.NoMuxAndDiscoveryIncompleteKey)\r\n\tapiExtensionsServer, err := config.ApiExtensions.New(genericapiserver.NewEmptyDelegateWithCustomHandler(notFoundHandler))\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\tcrdAPIEnabled := config.ApiExtensions.GenericConfig.MergedResourceConfig.ResourceEnabled(apiextensionsv1.SchemeGroupVersion.WithResource(\"customresourcedefinitions\"))\r\n\r\n\tkubeAPIServer, err := config.ControlPlane.New(apiExtensionsServer.GenericAPIServer)\r\n\tif err != nil {\r\n\t\treturn nil, err\r\n\t}\r\n\r\n\t\/\/ aggregator comes last in the chain\r\n\taggregatorServer, err := createAggregatorServer(config.Aggregator, kubeAPIServer.GenericAPIServer, apiExtensionsServer.Informers, crdAPIEnabled)\r\n\tif err != nil {\r\n\t\t\/\/ we don't need special handling for innerStopCh because the aggregator server doesn't create any go routines\r\n\t\treturn nil, err\r\n\t}\r\n\r\n\treturn aggregatorServer, nil\r\n}\r\n<\/code><\/pre>\n\u51c6\u5907\u597d\u8dd1<\/h3>\n
PreparedRun \u5728 https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/staging\/src\/k8s.io\/kube-aggregator\/pkg\/apiserver\/apiserver.go#L400 \u8fdb\u884c\u4e86\u5b9e\u73b0\uff0c\u5b83\u5b9e\u73b0\u4e86\u542f\u52a8\u805a\u5408\u5668\u670d\u52a1\u5668\u6240\u9700\u7684\u7ec4\u4ef6\u3002\u5173\u4e8e\u5177\u4f53\u5185\u5bb9\uff0c\u672c\u6587\u4e0d\u4f1a\u8be6\u8ff0\uff0c\u4f46\u5982\u679c\u4f60\u60f3\u4e86\u89e3\u66f4\u591a\u4fe1\u606f\uff0c\u8bf7\u53c2\u8003\u805a\u5408\u53d1\u73b0\u6587\u6863(aggregated discovery document)\u548cKubernetes API\u5065\u5eb7\u7aef\u70b9(Kubernetes API health endpoints)\u3002<\/p>\n
\u8dd1\u6b65<\/h3>\n
Run \u306e\u5b9f\u88c5\u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/staging\/src\/k8s.io\/kube-aggregator\/pkg\/apiserver\/apiserver.go#L466 \u306b\u8a18\u8f09\u3057\u3066\u304a\u308a\u3001\u3053\u306e\u95a2\u6570\u304c\u547c\u3073\u51fa\u3057\u3066\u3044\u308b s.runnable.Run \u306e\u5b9f\u88c5\u306f https:\/\/github.com\/kubernetes\/kubernetes\/blob\/v1.28.2\/staging\/src\/k8s.io\/apiserver\/pkg\/server\/genericapiserver.go#L496 \u306b\u8a18\u8f09\u3055\u308c\u3066\u3044\u307e\u3059\u3002\u3053\u3053\u3067\u306f\u30b5\u30fc\u30d0\u30fc\u306e\u8d77\u52d5\u306b\u95a2\u3057\u3066\u306e\u5b9f\u88c5\u304c\u66f8\u304b\u308c\u3066\u304a\u308a\u3053\u3053\u306f\u672c\u8a18\u4e8b\u306e\u30e1\u30a4\u30f3\u3068\u306a\u308b\u306e\u3067\u8a73\u3057\u304f\u8aac\u660e\u3057\u3066\u3044\u304d\u305f\u3044\u3068\u601d\u3044\u307e\u3059\u3002<\/p>\n
\u542f\u52a8\u670d\u52a1\u5668\u5904\u7406<\/h2>\n
s.runnable.Run\u306e\u5b9f\u88c5 \u306f\u3068\u3066\u3082\u9577\u304f\u8aad\u3080\u306e\u304c\u5927\u5909\u3067\u3059\u304c\u30b5\u30fc\u30d0\u30fc\u8d77\u52d5\u51e6\u7406\u306f\u4ee5\u4e0b\u306e NonBlockingRun \u95a2\u6570\u306b\u307e\u3068\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
stoppedCh, listenerStoppedCh, err := s.NonBlockingRun(stopHttpServerCh, shutdownTimeout)\r\nif err != nil {\r\n return err\r\n}\r\n<\/code><\/pre>\nNonBlockingRun \u306f non-blocking-scoket \u3092\u7528\u3044\u305f\u975e\u540c\u671f\u901a\u4fe1\u3092\u884c\u3046\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3059\u308b\u95a2\u6570\u3067\u3001\u3053\u306e\u3046\u3061\u4ee5\u4e0b\u306e\u3088\u3046\u306a s.SecureServingInfo.Serve \u95a2\u6570\u306b\u30b5\u30fc\u30d0\u30fc\u8d77\u52d5\u51e6\u7406\u304c\u307e\u3068\u307e\u3063\u3066\u3044\u307e\u3059\u3002<\/p>\n
stoppedCh, listenerStoppedCh, err = s.SecureServingInfo.Serve(s.Handler, shutdownTimeout, internalStopCh)\r\nif err != nil {\r\n close(internalStopCh)\r\n return nil, nil, err\r\n}\r\n<\/code><\/pre>\n\u305d\u3057\u3066\u3001s.SecureServingInfo.Serve \u306b\u30b5\u30fc\u30d0\u30fc\u306b\u95a2\u3059\u308b\u69cb\u9020\u4f53\u3084\u8a2d\u5b9a\u306a\u3069\u3092\u884c\u3046\u5b9f\u88c5\u304c\u3042\u308a\u6700\u7d42\u884c\u306b\u5f53\u305f\u308b RunServer \u3067\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3057\u307e\u3059\u3002\u6700\u5f8c\u306b RunServer \u3067 server.Serve\u304c\u547c\u3073\u51fa\u3055\u308c\u308b\u3053\u3068\u3067\u30b5\u30fc\u30d0\u30fc\u304c\u8d77\u52d5\u3057\u307e\u3059\u3002<\/p>\n
func RunServer(\r\n\tserver *http.Server,\r\n\tln net.Listener,\r\n\tshutDownTimeout time.Duration,\r\n\tstopCh <-chan struct{},\r\n) (<-chan struct{}, <-chan struct{}, error) {\r\n\tif ln == nil {\r\n\t\treturn nil, nil, fmt.Errorf(\"listener must not be nil\")\r\n\t}\r\n\r\n\t\/\/ Shutdown server gracefully.\r\n\tserverShutdownCh, listenerStoppedCh := make(chan struct{}), make(chan struct{})\r\n\tgo func() {\r\n\t\tdefer close(serverShutdownCh)\r\n\t\t<-stopCh\r\n\t\tctx, cancel := context.WithTimeout(context.Background(), shutDownTimeout)\r\n\t\tserver.Shutdown(ctx)\r\n\t\tcancel()\r\n\t}()\r\n\r\n\tgo func() {\r\n\t\tdefer utilruntime.HandleCrash()\r\n\t\tdefer close(listenerStoppedCh)\r\n\r\n\t\tvar listener net.Listener\r\n\t\tlistener = tcpKeepAliveListener{ln}\r\n\t\tif server.TLSConfig != nil {\r\n\t\t\tlistener = tls.NewListener(listener, server.TLSConfig)\r\n\t\t}\r\n\r\n\t\terr := server.Serve(listener)\r\n\r\n\t\tmsg := fmt.Sprintf(\"Stopped listening on %s\", ln.Addr().String())\r\n\t\tselect {\r\n\t\tcase <-stopCh:\r\n\t\t\tklog.Info(msg)\r\n\t\tdefault:\r\n\t\t\tpanic(fmt.Sprintf(\"%s due to error: %v\", msg, err))\r\n\t\t}\r\n\t}()\r\n\r\n\treturn serverShutdownCh, listenerStoppedCh, nil\r\n}\r\n<\/code><\/pre>\n\u307e\u3068\u3081<\/h1>\n
\u4eca\u56de\u306f kube-apiserver \u306e\u30a8\u30f3\u30c8\u30ea\u30fc\u30dd\u30a4\u30f3\u30c8\u304b\u3089\u5b9f\u969b\u306b\u30b5\u30fc\u30d0\u30fc\u3092\u8d77\u52d5\u3055\u305b\u308b\u51e6\u7406\u307e\u3067\u5185\u90e8\u5b9f\u88c5\u3092\u8ffd\u3063\u3066\u3044\u304d\u307e\u3057\u305f\u3002\u30b5\u30fc\u30d0\u30fc\u8d77\u52d5\u51e6\u7406\u307e\u3067\u8ffd\u3046\u3053\u3068\u3067 kube-apiserver\u306e\u5b9f\u88c5\u306e\u5168\u4f53\u50cf\u3092\u63b4\u3081\u305f\u306e\u3067\u306f\u306a\u3044\u304b\u3068\u601d\u3044\u307e\u3059\u3002\u4eca\u5f8c\u6a5f\u4f1a\u304c\u3042\u308c\u3070\u30cf\u30f3\u30c9\u30e9\u30fc\u306e\u51e6\u7406\u3084\u4eca\u56de\u7701\u7565\u3057\u305f\u5185\u5bb9\u3082\u542b\u3081\u3066\u307e\u3068\u3081\u3089\u308c\u305f\u3089\u3068\u601d\u3044\u307e\u3059\u3002\u6700\u5f8c\u307e\u3067\u304a\u4ed8\u304d\u5408\u3044\u9802\u304d\u3042\u308a\u304c\u3068\u3046\u3054\u3056\u3044\u307e\u3057\u305f\u3002<\/p>\n
\u5f15\u7528\u8d44\u6599<\/h1>\n\n- \n
Kubernetes<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Kube API Server<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
Kube API Server<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
\n- \n
aggregated discovery document<\/ul>\n<\/li>\n<\/ul>\n <\/p>\n
Kubernetes API health endpoints<\/ul>\n","protected":false},"excerpt":{"rendered":"\u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662fCyberAgent 24\u5352\u5185\u5b9a\u8005 Advent Calendar\u7684\u7b2c12\u5929\u6587\u7ae0\u3002 \u30b3\u30f3\u30c6\u30ca\u30aa […]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-35513","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
\u76f4\u5230 kube-apiserver \u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62 - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/zh\/blog\/\u76f4\u5230-kube-apiserver-\u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62\u3002\/\" \/>\n<meta property=\"og:locale\" content=\"zh_CN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u76f4\u5230 kube-apiserver \u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62\" \/>\n<meta property=\"og:description\" content=\"\u9996\u5148 \u8fd9\u7bc7\u6587\u7ae0\u662fCyberAgent 24\u5352\u5185\u5b9a\u8005 Advent Calendar\u7684\u7b2c12\u5929\u6587\u7ae0\u3002 \u30b3\u30f3\u30c6\u30ca\u30aa […]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.silicloud.com\/zh\/blog\/\u76f4\u5230-kube-apiserver-\u542f\u52a8\u670d\u52a1\u5668\u4e3a\u6b62\u3002\/\" \/>\n<meta property=\"og:site_name\" content=\"Blog - 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