Esempio n. 1
0
// Run runs the specified APIServer.  This should never exit.
func Run(s *options.APIServer) error {
	genericvalidation.VerifyEtcdServersList(s.ServerRunOptions)
	genericapiserver.DefaultAndValidateRunOptions(s.ServerRunOptions)

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		PrivilegedSources: capabilities.PrivilegedSources{
			HostNetworkSources: []string{},
			HostPIDSources:     []string{},
			HostIPCSources:     []string{},
		},
		PerConnectionBandwidthLimitBytesPerSec: s.MaxConnectionBytesPerSec,
	})

	// Setup tunneler if needed
	var tunneler genericapiserver.Tunneler
	var proxyDialerFn apiserver.ProxyDialerFunc
	if len(s.SSHUser) > 0 {
		// Get ssh key distribution func, if supported
		var installSSH genericapiserver.InstallSSHKey
		cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
		if err != nil {
			glog.Fatalf("Cloud provider could not be initialized: %v", err)
		}
		if cloud != nil {
			if instances, supported := cloud.Instances(); supported {
				installSSH = instances.AddSSHKeyToAllInstances
			}
		}
		if s.KubeletConfig.Port == 0 {
			glog.Fatalf("Must enable kubelet port if proxy ssh-tunneling is specified.")
		}
		// Set up the tunneler
		// TODO(cjcullen): If we want this to handle per-kubelet ports or other
		// kubelet listen-addresses, we need to plumb through options.
		healthCheckPath := &url.URL{
			Scheme: "https",
			Host:   net.JoinHostPort("127.0.0.1", strconv.FormatUint(uint64(s.KubeletConfig.Port), 10)),
			Path:   "healthz",
		}
		tunneler = genericapiserver.NewSSHTunneler(s.SSHUser, s.SSHKeyfile, healthCheckPath, installSSH)

		// Use the tunneler's dialer to connect to the kubelet
		s.KubeletConfig.Dial = tunneler.Dial
		// Use the tunneler's dialer when proxying to pods, services, and nodes
		proxyDialerFn = tunneler.Dial
	}

	// Proxying to pods and services is IP-based... don't expect to be able to verify the hostname
	proxyTLSClientConfig := &tls.Config{InsecureSkipVerify: true}

	kubeletClient, err := kubeletclient.NewStaticKubeletClient(&s.KubeletConfig)
	if err != nil {
		glog.Fatalf("Failed to start kubelet client: %v", err)
	}

	storageGroupsToEncodingVersion, err := s.StorageGroupsToEncodingVersion()
	if err != nil {
		glog.Fatalf("error generating storage version map: %s", err)
	}
	storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
		s.StorageConfig, s.DefaultStorageMediaType, api.Codecs,
		genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
		// FIXME: this GroupVersionResource override should be configurable
		[]unversioned.GroupVersionResource{batch.Resource("scheduledjobs").WithVersion("v2alpha1")},
		master.DefaultAPIResourceConfigSource(), s.RuntimeConfig)
	if err != nil {
		glog.Fatalf("error in initializing storage factory: %s", err)
	}
	storageFactory.AddCohabitatingResources(batch.Resource("jobs"), extensions.Resource("jobs"))
	storageFactory.AddCohabitatingResources(autoscaling.Resource("horizontalpodautoscalers"), extensions.Resource("horizontalpodautoscalers"))
	for _, override := range s.EtcdServersOverrides {
		tokens := strings.Split(override, "#")
		if len(tokens) != 2 {
			glog.Errorf("invalid value of etcd server overrides: %s", override)
			continue
		}

		apiresource := strings.Split(tokens[0], "/")
		if len(apiresource) != 2 {
			glog.Errorf("invalid resource definition: %s", tokens[0])
			continue
		}
		group := apiresource[0]
		resource := apiresource[1]
		groupResource := unversioned.GroupResource{Group: group, Resource: resource}

		servers := strings.Split(tokens[1], ";")
		storageFactory.SetEtcdLocation(groupResource, servers)
	}

	// Default to the private server key for service account token signing
	if s.ServiceAccountKeyFile == "" && s.TLSPrivateKeyFile != "" {
		if authenticator.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFile = s.TLSPrivateKeyFile
		} else {
			glog.Warning("No RSA key provided, service account token authentication disabled")
		}
	}

	var serviceAccountGetter serviceaccount.ServiceAccountTokenGetter
	if s.ServiceAccountLookup {
		// If we need to look up service accounts and tokens,
		// go directly to etcd to avoid recursive auth insanity
		storageConfig, err := storageFactory.NewConfig(api.Resource("serviceaccounts"))
		if err != nil {
			glog.Fatalf("Unable to get serviceaccounts storage: %v", err)
		}
		serviceAccountGetter = serviceaccountcontroller.NewGetterFromStorageInterface(storageConfig, storageFactory.ResourcePrefix(api.Resource("serviceaccounts")), storageFactory.ResourcePrefix(api.Resource("secrets")))
	}

	apiAuthenticator, err := authenticator.New(authenticator.AuthenticatorConfig{
		Anonymous:                   s.AnonymousAuth,
		AnyToken:                    s.EnableAnyToken,
		BasicAuthFile:               s.BasicAuthFile,
		ClientCAFile:                s.ClientCAFile,
		TokenAuthFile:               s.TokenAuthFile,
		OIDCIssuerURL:               s.OIDCIssuerURL,
		OIDCClientID:                s.OIDCClientID,
		OIDCCAFile:                  s.OIDCCAFile,
		OIDCUsernameClaim:           s.OIDCUsernameClaim,
		OIDCGroupsClaim:             s.OIDCGroupsClaim,
		ServiceAccountKeyFile:       s.ServiceAccountKeyFile,
		ServiceAccountLookup:        s.ServiceAccountLookup,
		ServiceAccountTokenGetter:   serviceAccountGetter,
		KeystoneURL:                 s.KeystoneURL,
		WebhookTokenAuthnConfigFile: s.WebhookTokenAuthnConfigFile,
		WebhookTokenAuthnCacheTTL:   s.WebhookTokenAuthnCacheTTL,
	})

	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	authorizationModeNames := strings.Split(s.AuthorizationMode, ",")

	modeEnabled := func(mode string) bool {
		for _, m := range authorizationModeNames {
			if m == mode {
				return true
			}
		}
		return false
	}

	authorizationConfig := authorizer.AuthorizationConfig{
		PolicyFile:                  s.AuthorizationPolicyFile,
		WebhookConfigFile:           s.AuthorizationWebhookConfigFile,
		WebhookCacheAuthorizedTTL:   s.AuthorizationWebhookCacheAuthorizedTTL,
		WebhookCacheUnauthorizedTTL: s.AuthorizationWebhookCacheUnauthorizedTTL,
		RBACSuperUser:               s.AuthorizationRBACSuperUser,
	}
	if modeEnabled(genericoptions.ModeRBAC) {
		mustGetRESTOptions := func(resource string) generic.RESTOptions {
			config, err := storageFactory.NewConfig(rbac.Resource(resource))
			if err != nil {
				glog.Fatalf("Unable to get %s storage: %v", resource, err)
			}
			return generic.RESTOptions{StorageConfig: config, Decorator: generic.UndecoratedStorage, ResourcePrefix: storageFactory.ResourcePrefix(rbac.Resource(resource))}
		}

		// For initial bootstrapping go directly to etcd to avoid privillege escalation check.
		authorizationConfig.RBACRoleRegistry = role.NewRegistry(roleetcd.NewREST(mustGetRESTOptions("roles")))
		authorizationConfig.RBACRoleBindingRegistry = rolebinding.NewRegistry(rolebindingetcd.NewREST(mustGetRESTOptions("rolebindings")))
		authorizationConfig.RBACClusterRoleRegistry = clusterrole.NewRegistry(clusterroleetcd.NewREST(mustGetRESTOptions("clusterroles")))
		authorizationConfig.RBACClusterRoleBindingRegistry = clusterrolebinding.NewRegistry(clusterrolebindingetcd.NewREST(mustGetRESTOptions("clusterrolebindings")))
	}

	apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, authorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	privilegedLoopbackToken := uuid.NewRandom().String()

	client, err := s.NewSelfClient(privilegedLoopbackToken)
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}

	// TODO(dims): We probably need to add an option "EnableLoopbackToken"
	if apiAuthenticator != nil {
		var uid = uuid.NewRandom().String()
		tokens := make(map[string]*user.DefaultInfo)
		tokens[privilegedLoopbackToken] = &user.DefaultInfo{
			Name:   "system:apiserver",
			UID:    uid,
			Groups: []string{"system:masters"},
		}

		tokenAuthenticator := authenticator.NewAuthenticatorFromTokens(tokens)
		apiAuthenticator = authenticatorunion.New(tokenAuthenticator, apiAuthenticator)

		tokenAuthorizer := authorizer.NewPrivilegedGroups("system:masters")
		apiAuthorizer = authorizerunion.New(tokenAuthorizer, apiAuthorizer)
	}

	sharedInformers := informers.NewSharedInformerFactory(client, 10*time.Minute)
	pluginInitializer := admission.NewPluginInitializer(sharedInformers)

	admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile, pluginInitializer)
	if err != nil {
		glog.Fatalf("Failed to initialize plugins: %v", err)
	}

	genericConfig := genericapiserver.NewConfig(s.ServerRunOptions)
	// TODO: Move the following to generic api server as well.
	genericConfig.Authenticator = apiAuthenticator
	genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
	genericConfig.Authorizer = apiAuthorizer
	genericConfig.AuthorizerRBACSuperUser = s.AuthorizationRBACSuperUser
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
	genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
	genericConfig.ProxyDialer = proxyDialerFn
	genericConfig.ProxyTLSClientConfig = proxyTLSClientConfig
	genericConfig.Serializer = api.Codecs
	genericConfig.OpenAPIInfo.Title = "Kubernetes"
	genericConfig.OpenAPIDefinitions = openapi.OpenAPIDefinitions
	genericConfig.EnableOpenAPISupport = true

	config := &master.Config{
		GenericConfig: genericConfig,

		StorageFactory:          storageFactory,
		EnableWatchCache:        s.EnableWatchCache,
		EnableCoreControllers:   true,
		DeleteCollectionWorkers: s.DeleteCollectionWorkers,
		EventTTL:                s.EventTTL,
		KubeletClient:           kubeletClient,
		EnableUISupport:         true,
		EnableLogsSupport:       true,

		Tunneler: tunneler,
	}

	if s.EnableWatchCache {
		glog.V(2).Infof("Initalizing cache sizes based on %dMB limit", s.TargetRAMMB)
		cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
		cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
	}

	m, err := config.Complete().New()
	if err != nil {
		return err
	}

	sharedInformers.Start(wait.NeverStop)
	m.Run(s.ServerRunOptions)
	return nil
}
Esempio n. 2
0
// Run runs the specified APIServer.  This should never exit.
func Run(s *options.APIServer) error {
	genericapiserver.DefaultAndValidateRunOptions(s.ServerRunOptions)

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		PrivilegedSources: capabilities.PrivilegedSources{
			HostNetworkSources: []string{},
			HostPIDSources:     []string{},
			HostIPCSources:     []string{},
		},
		PerConnectionBandwidthLimitBytesPerSec: s.MaxConnectionBytesPerSec,
	})

	// Setup tunneler if needed
	var tunneler genericapiserver.Tunneler
	var proxyDialerFn apiserver.ProxyDialerFunc
	if len(s.SSHUser) > 0 {
		// Get ssh key distribution func, if supported
		var installSSH genericapiserver.InstallSSHKey
		cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
		if err != nil {
			glog.Fatalf("Cloud provider could not be initialized: %v", err)
		}
		if cloud != nil {
			if instances, supported := cloud.Instances(); supported {
				installSSH = instances.AddSSHKeyToAllInstances
			}
		}
		if s.KubeletConfig.Port == 0 {
			glog.Fatalf("Must enable kubelet port if proxy ssh-tunneling is specified.")
		}
		// Set up the tunneler
		// TODO(cjcullen): If we want this to handle per-kubelet ports or other
		// kubelet listen-addresses, we need to plumb through options.
		healthCheckPath := &url.URL{
			Scheme: "https",
			Host:   net.JoinHostPort("127.0.0.1", strconv.FormatUint(uint64(s.KubeletConfig.Port), 10)),
			Path:   "healthz",
		}
		tunneler = genericapiserver.NewSSHTunneler(s.SSHUser, s.SSHKeyfile, healthCheckPath, installSSH)

		// Use the tunneler's dialer to connect to the kubelet
		s.KubeletConfig.Dial = tunneler.Dial
		// Use the tunneler's dialer when proxying to pods, services, and nodes
		proxyDialerFn = tunneler.Dial
	}

	// Proxying to pods and services is IP-based... don't expect to be able to verify the hostname
	proxyTLSClientConfig := &tls.Config{InsecureSkipVerify: true}

	kubeletClient, err := kubeletclient.NewStaticKubeletClient(&s.KubeletConfig)
	if err != nil {
		glog.Fatalf("Failure to start kubelet client: %v", err)
	}

	storageGroupsToEncodingVersion, err := s.StorageGroupsToEncodingVersion()
	if err != nil {
		glog.Fatalf("error generating storage version map: %s", err)
	}
	storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
		s.StorageConfig, s.DefaultStorageMediaType, api.Codecs,
		genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
		master.DefaultAPIResourceConfigSource(), s.RuntimeConfig)
	if err != nil {
		glog.Fatalf("error in initializing storage factory: %s", err)
	}
	storageFactory.AddCohabitatingResources(batch.Resource("jobs"), extensions.Resource("jobs"))
	storageFactory.AddCohabitatingResources(autoscaling.Resource("horizontalpodautoscalers"), extensions.Resource("horizontalpodautoscalers"))
	for _, override := range s.EtcdServersOverrides {
		tokens := strings.Split(override, "#")
		if len(tokens) != 2 {
			glog.Errorf("invalid value of etcd server overrides: %s", override)
			continue
		}

		apiresource := strings.Split(tokens[0], "/")
		if len(apiresource) != 2 {
			glog.Errorf("invalid resource definition: %s", tokens[0])
			continue
		}
		group := apiresource[0]
		resource := apiresource[1]
		groupResource := unversioned.GroupResource{Group: group, Resource: resource}

		servers := strings.Split(tokens[1], ";")
		storageFactory.SetEtcdLocation(groupResource, servers)
	}

	// Default to the private server key for service account token signing
	if s.ServiceAccountKeyFile == "" && s.TLSPrivateKeyFile != "" {
		if authenticator.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFile = s.TLSPrivateKeyFile
		} else {
			glog.Warning("No RSA key provided, service account token authentication disabled")
		}
	}

	var serviceAccountGetter serviceaccount.ServiceAccountTokenGetter
	if s.ServiceAccountLookup {
		// If we need to look up service accounts and tokens,
		// go directly to etcd to avoid recursive auth insanity
		storage, err := storageFactory.New(api.Resource("serviceaccounts"))
		if err != nil {
			glog.Fatalf("Unable to get serviceaccounts storage: %v", err)
		}
		serviceAccountGetter = serviceaccountcontroller.NewGetterFromStorageInterface(storage)
	}

	authenticator, err := authenticator.New(authenticator.AuthenticatorConfig{
		BasicAuthFile:               s.BasicAuthFile,
		ClientCAFile:                s.ClientCAFile,
		TokenAuthFile:               s.TokenAuthFile,
		OIDCIssuerURL:               s.OIDCIssuerURL,
		OIDCClientID:                s.OIDCClientID,
		OIDCCAFile:                  s.OIDCCAFile,
		OIDCUsernameClaim:           s.OIDCUsernameClaim,
		OIDCGroupsClaim:             s.OIDCGroupsClaim,
		ServiceAccountKeyFile:       s.ServiceAccountKeyFile,
		ServiceAccountLookup:        s.ServiceAccountLookup,
		ServiceAccountTokenGetter:   serviceAccountGetter,
		KeystoneURL:                 s.KeystoneURL,
		WebhookTokenAuthnConfigFile: s.WebhookTokenAuthnConfigFile,
		WebhookTokenAuthnCacheTTL:   s.WebhookTokenAuthnCacheTTL,
	})

	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	authorizationModeNames := strings.Split(s.AuthorizationMode, ",")
	authorizer, err := apiserver.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, s.AuthorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	client, err := s.NewSelfClient()
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}
	admissionController := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile)

	genericConfig := genericapiserver.NewConfig(s.ServerRunOptions)
	// TODO: Move the following to generic api server as well.
	genericConfig.StorageFactory = storageFactory
	genericConfig.Authenticator = authenticator
	genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
	genericConfig.Authorizer = authorizer
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
	genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
	genericConfig.ProxyDialer = proxyDialerFn
	genericConfig.ProxyTLSClientConfig = proxyTLSClientConfig
	genericConfig.Serializer = api.Codecs

	config := &master.Config{
		Config:                  genericConfig,
		EnableCoreControllers:   true,
		DeleteCollectionWorkers: s.DeleteCollectionWorkers,
		EventTTL:                s.EventTTL,
		KubeletClient:           kubeletClient,

		Tunneler: tunneler,
	}

	if s.EnableWatchCache {
		cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
	}

	m, err := master.New(config)
	if err != nil {
		return err
	}

	m.Run(s.ServerRunOptions)
	return nil
}
Esempio n. 3
0
// Run runs the specified APIServer.  This should never exit.
func Run(s *options.APIServer) error {
	genericapiserver.DefaultAndValidateRunOptions(s.ServerRunOptions)

	if len(s.StorageConfig.ServerList) == 0 {
		glog.Fatalf("--etcd-servers must be specified")
	}

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		PrivilegedSources: capabilities.PrivilegedSources{
			HostNetworkSources: []string{},
			HostPIDSources:     []string{},
			HostIPCSources:     []string{},
		},
		PerConnectionBandwidthLimitBytesPerSec: s.MaxConnectionBytesPerSec,
	})

	cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
	if err != nil {
		glog.Fatalf("Cloud provider could not be initialized: %v", err)
	}

	// Setup tunneler if needed
	var tunneler genericapiserver.Tunneler
	var proxyDialerFn apiserver.ProxyDialerFunc
	if len(s.SSHUser) > 0 {
		// Get ssh key distribution func, if supported
		var installSSH genericapiserver.InstallSSHKey
		if cloud != nil {
			if instances, supported := cloud.Instances(); supported {
				installSSH = instances.AddSSHKeyToAllInstances
			}
		}
		if s.KubeletConfig.Port == 0 {
			glog.Fatalf("Must enable kubelet port if proxy ssh-tunneling is specified.")
		}
		// Set up the tunneler
		// TODO(cjcullen): If we want this to handle per-kubelet ports or other
		// kubelet listen-addresses, we need to plumb through options.
		healthCheckPath := &url.URL{
			Scheme: "https",
			Host:   net.JoinHostPort("127.0.0.1", strconv.FormatUint(uint64(s.KubeletConfig.Port), 10)),
			Path:   "healthz",
		}
		tunneler = genericapiserver.NewSSHTunneler(s.SSHUser, s.SSHKeyfile, healthCheckPath, installSSH)

		// Use the tunneler's dialer to connect to the kubelet
		s.KubeletConfig.Dial = tunneler.Dial
		// Use the tunneler's dialer when proxying to pods, services, and nodes
		proxyDialerFn = tunneler.Dial
	}

	// Proxying to pods and services is IP-based... don't expect to be able to verify the hostname
	proxyTLSClientConfig := &tls.Config{InsecureSkipVerify: true}

	kubeletClient, err := kubeletclient.NewStaticKubeletClient(&s.KubeletConfig)
	if err != nil {
		glog.Fatalf("Failure to start kubelet client: %v", err)
	}

	apiResourceConfigSource, err := parseRuntimeConfig(s)
	if err != nil {
		glog.Fatalf("error in parsing runtime-config: %s", err)
	}

	clientConfig := &restclient.Config{
		Host: net.JoinHostPort(s.InsecureBindAddress.String(), strconv.Itoa(s.InsecurePort)),
		// Increase QPS limits. The client is currently passed to all admission plugins,
		// and those can be throttled in case of higher load on apiserver - see #22340 and #22422
		// for more details. Once #22422 is fixed, we may want to remove it.
		QPS:   50,
		Burst: 100,
	}
	if len(s.DeprecatedStorageVersion) != 0 {
		gv, err := unversioned.ParseGroupVersion(s.DeprecatedStorageVersion)
		if err != nil {
			glog.Fatalf("error in parsing group version: %s", err)
		}
		clientConfig.GroupVersion = &gv
	}

	client, err := clientset.NewForConfig(clientConfig)
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}

	resourceEncoding := genericapiserver.NewDefaultResourceEncodingConfig()
	groupToEncoding, err := s.StorageGroupsToEncodingVersion()
	if err != nil {
		glog.Fatalf("error getting group encoding: %s", err)
	}
	for group, storageEncodingVersion := range groupToEncoding {
		resourceEncoding.SetVersionEncoding(group, storageEncodingVersion, unversioned.GroupVersion{Group: group, Version: runtime.APIVersionInternal})
	}

	storageFactory := genericapiserver.NewDefaultStorageFactory(s.StorageConfig, api.Codecs, resourceEncoding, apiResourceConfigSource)
	storageFactory.AddCohabitatingResources(batch.Resource("jobs"), extensions.Resource("jobs"))
	storageFactory.AddCohabitatingResources(autoscaling.Resource("horizontalpodautoscalers"), extensions.Resource("horizontalpodautoscalers"))
	for _, override := range s.EtcdServersOverrides {
		tokens := strings.Split(override, "#")
		if len(tokens) != 2 {
			glog.Errorf("invalid value of etcd server overrides: %s", override)
			continue
		}

		apiresource := strings.Split(tokens[0], "/")
		if len(apiresource) != 2 {
			glog.Errorf("invalid resource definition: %s", tokens[0])
			continue
		}
		group := apiresource[0]
		resource := apiresource[1]
		groupResource := unversioned.GroupResource{Group: group, Resource: resource}

		servers := strings.Split(tokens[1], ";")
		storageFactory.SetEtcdLocation(groupResource, servers)
	}

	// Default to the private server key for service account token signing
	if s.ServiceAccountKeyFile == "" && s.TLSPrivateKeyFile != "" {
		if authenticator.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFile = s.TLSPrivateKeyFile
		} else {
			glog.Warning("No RSA key provided, service account token authentication disabled")
		}
	}

	var serviceAccountGetter serviceaccount.ServiceAccountTokenGetter
	if s.ServiceAccountLookup {
		// If we need to look up service accounts and tokens,
		// go directly to etcd to avoid recursive auth insanity
		storage, err := storageFactory.New(api.Resource("serviceaccounts"))
		if err != nil {
			glog.Fatalf("Unable to get serviceaccounts storage: %v", err)
		}
		serviceAccountGetter = serviceaccountcontroller.NewGetterFromStorageInterface(storage)
	}

	authenticator, err := authenticator.New(authenticator.AuthenticatorConfig{
		BasicAuthFile:             s.BasicAuthFile,
		ClientCAFile:              s.ClientCAFile,
		TokenAuthFile:             s.TokenAuthFile,
		OIDCIssuerURL:             s.OIDCIssuerURL,
		OIDCClientID:              s.OIDCClientID,
		OIDCCAFile:                s.OIDCCAFile,
		OIDCUsernameClaim:         s.OIDCUsernameClaim,
		OIDCGroupsClaim:           s.OIDCGroupsClaim,
		ServiceAccountKeyFile:     s.ServiceAccountKeyFile,
		ServiceAccountLookup:      s.ServiceAccountLookup,
		ServiceAccountTokenGetter: serviceAccountGetter,
		KeystoneURL:               s.KeystoneURL,
	})

	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	authorizationModeNames := strings.Split(s.AuthorizationMode, ",")
	authorizer, err := apiserver.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, s.AuthorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")
	admissionController := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile)

	if len(s.ExternalHost) == 0 {
		// TODO: extend for other providers
		if s.CloudProvider == "gce" {
			instances, supported := cloud.Instances()
			if !supported {
				glog.Fatalf("GCE cloud provider has no instances.  this shouldn't happen. exiting.")
			}
			name, err := os.Hostname()
			if err != nil {
				glog.Fatalf("Failed to get hostname: %v", err)
			}
			addrs, err := instances.NodeAddresses(name)
			if err != nil {
				glog.Warningf("Unable to obtain external host address from cloud provider: %v", err)
			} else {
				for _, addr := range addrs {
					if addr.Type == api.NodeExternalIP {
						s.ExternalHost = addr.Address
					}
				}
			}
		}
	}

	genericConfig := genericapiserver.NewConfig(s.ServerRunOptions)
	// TODO: Move the following to generic api server as well.
	genericConfig.StorageFactory = storageFactory
	genericConfig.Authenticator = authenticator
	genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
	genericConfig.Authorizer = authorizer
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = apiResourceConfigSource
	genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
	genericConfig.ProxyDialer = proxyDialerFn
	genericConfig.ProxyTLSClientConfig = proxyTLSClientConfig
	genericConfig.Serializer = api.Codecs

	config := &master.Config{
		Config:                  genericConfig,
		EnableCoreControllers:   true,
		DeleteCollectionWorkers: s.DeleteCollectionWorkers,
		EventTTL:                s.EventTTL,
		KubeletClient:           kubeletClient,

		Tunneler: tunneler,
	}

	if s.EnableWatchCache {
		cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
	}

	m, err := master.New(config)
	if err != nil {
		return err
	}

	m.Run(s.ServerRunOptions)
	return nil
}
Esempio n. 4
0
// Run runs the specified APIServer.  This should never exit.
func Run(s *options.APIServer) error {
	genericvalidation.VerifyEtcdServersList(s.ServerRunOptions)
	genericapiserver.DefaultAndValidateRunOptions(s.ServerRunOptions)
	genericConfig := genericapiserver.NewConfig(). // create the new config
							ApplyOptions(s.ServerRunOptions). // apply the options selected
							Complete()                        // set default values based on the known values

	if err := genericConfig.MaybeGenerateServingCerts(); err != nil {
		glog.Fatalf("Failed to generate service certificate: %v", err)
	}

	capabilities.Initialize(capabilities.Capabilities{
		AllowPrivileged: s.AllowPrivileged,
		// TODO(vmarmol): Implement support for HostNetworkSources.
		PrivilegedSources: capabilities.PrivilegedSources{
			HostNetworkSources: []string{},
			HostPIDSources:     []string{},
			HostIPCSources:     []string{},
		},
		PerConnectionBandwidthLimitBytesPerSec: s.MaxConnectionBytesPerSec,
	})

	// Setup tunneler if needed
	var tunneler genericapiserver.Tunneler
	var proxyDialerFn apiserver.ProxyDialerFunc
	if len(s.SSHUser) > 0 {
		// Get ssh key distribution func, if supported
		var installSSH genericapiserver.InstallSSHKey
		cloud, err := cloudprovider.InitCloudProvider(s.CloudProvider, s.CloudConfigFile)
		if err != nil {
			glog.Fatalf("Cloud provider could not be initialized: %v", err)
		}
		if cloud != nil {
			if instances, supported := cloud.Instances(); supported {
				installSSH = instances.AddSSHKeyToAllInstances
			}
		}
		if s.KubeletConfig.Port == 0 {
			glog.Fatalf("Must enable kubelet port if proxy ssh-tunneling is specified.")
		}
		// Set up the tunneler
		// TODO(cjcullen): If we want this to handle per-kubelet ports or other
		// kubelet listen-addresses, we need to plumb through options.
		healthCheckPath := &url.URL{
			Scheme: "https",
			Host:   net.JoinHostPort("127.0.0.1", strconv.FormatUint(uint64(s.KubeletConfig.Port), 10)),
			Path:   "healthz",
		}
		tunneler = genericapiserver.NewSSHTunneler(s.SSHUser, s.SSHKeyfile, healthCheckPath, installSSH)

		// Use the tunneler's dialer to connect to the kubelet
		s.KubeletConfig.Dial = tunneler.Dial
		// Use the tunneler's dialer when proxying to pods, services, and nodes
		proxyDialerFn = tunneler.Dial
	}

	// Proxying to pods and services is IP-based... don't expect to be able to verify the hostname
	proxyTLSClientConfig := &tls.Config{InsecureSkipVerify: true}

	if s.StorageConfig.DeserializationCacheSize == 0 {
		// When size of cache is not explicitly set, estimate its size based on
		// target memory usage.
		glog.V(2).Infof("Initalizing deserialization cache size based on %dMB limit", s.TargetRAMMB)

		// This is the heuristics that from memory capacity is trying to infer
		// the maximum number of nodes in the cluster and set cache sizes based
		// on that value.
		// From our documentation, we officially recomment 120GB machines for
		// 2000 nodes, and we scale from that point. Thus we assume ~60MB of
		// capacity per node.
		// TODO: We may consider deciding that some percentage of memory will
		// be used for the deserialization cache and divide it by the max object
		// size to compute its size. We may even go further and measure
		// collective sizes of the objects in the cache.
		clusterSize := s.TargetRAMMB / 60
		s.StorageConfig.DeserializationCacheSize = 25 * clusterSize
		if s.StorageConfig.DeserializationCacheSize < 1000 {
			s.StorageConfig.DeserializationCacheSize = 1000
		}
	}

	storageGroupsToEncodingVersion, err := s.StorageGroupsToEncodingVersion()
	if err != nil {
		glog.Fatalf("error generating storage version map: %s", err)
	}
	storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
		s.StorageConfig, s.DefaultStorageMediaType, api.Codecs,
		genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
		// FIXME: this GroupVersionResource override should be configurable
		[]unversioned.GroupVersionResource{batch.Resource("scheduledjobs").WithVersion("v2alpha1")},
		master.DefaultAPIResourceConfigSource(), s.RuntimeConfig)
	if err != nil {
		glog.Fatalf("error in initializing storage factory: %s", err)
	}
	storageFactory.AddCohabitatingResources(batch.Resource("jobs"), extensions.Resource("jobs"))
	storageFactory.AddCohabitatingResources(autoscaling.Resource("horizontalpodautoscalers"), extensions.Resource("horizontalpodautoscalers"))
	for _, override := range s.EtcdServersOverrides {
		tokens := strings.Split(override, "#")
		if len(tokens) != 2 {
			glog.Errorf("invalid value of etcd server overrides: %s", override)
			continue
		}

		apiresource := strings.Split(tokens[0], "/")
		if len(apiresource) != 2 {
			glog.Errorf("invalid resource definition: %s", tokens[0])
			continue
		}
		group := apiresource[0]
		resource := apiresource[1]
		groupResource := unversioned.GroupResource{Group: group, Resource: resource}

		servers := strings.Split(tokens[1], ";")
		storageFactory.SetEtcdLocation(groupResource, servers)
	}

	// Default to the private server key for service account token signing
	if len(s.ServiceAccountKeyFiles) == 0 && s.TLSPrivateKeyFile != "" {
		if authenticator.IsValidServiceAccountKeyFile(s.TLSPrivateKeyFile) {
			s.ServiceAccountKeyFiles = []string{s.TLSPrivateKeyFile}
		} else {
			glog.Warning("No TLS key provided, service account token authentication disabled")
		}
	}

	var serviceAccountGetter serviceaccount.ServiceAccountTokenGetter
	if s.ServiceAccountLookup {
		// If we need to look up service accounts and tokens,
		// go directly to etcd to avoid recursive auth insanity
		storageConfig, err := storageFactory.NewConfig(api.Resource("serviceaccounts"))
		if err != nil {
			glog.Fatalf("Unable to get serviceaccounts storage: %v", err)
		}
		serviceAccountGetter = serviceaccountcontroller.NewGetterFromStorageInterface(storageConfig, storageFactory.ResourcePrefix(api.Resource("serviceaccounts")), storageFactory.ResourcePrefix(api.Resource("secrets")))
	}

	apiAuthenticator, securityDefinitions, err := authenticator.New(authenticator.AuthenticatorConfig{
		Anonymous:                   s.AnonymousAuth,
		AnyToken:                    s.EnableAnyToken,
		BasicAuthFile:               s.BasicAuthFile,
		ClientCAFile:                s.ClientCAFile,
		TokenAuthFile:               s.TokenAuthFile,
		OIDCIssuerURL:               s.OIDCIssuerURL,
		OIDCClientID:                s.OIDCClientID,
		OIDCCAFile:                  s.OIDCCAFile,
		OIDCUsernameClaim:           s.OIDCUsernameClaim,
		OIDCGroupsClaim:             s.OIDCGroupsClaim,
		ServiceAccountKeyFiles:      s.ServiceAccountKeyFiles,
		ServiceAccountLookup:        s.ServiceAccountLookup,
		ServiceAccountTokenGetter:   serviceAccountGetter,
		KeystoneURL:                 s.KeystoneURL,
		WebhookTokenAuthnConfigFile: s.WebhookTokenAuthnConfigFile,
		WebhookTokenAuthnCacheTTL:   s.WebhookTokenAuthnCacheTTL,
	})

	if err != nil {
		glog.Fatalf("Invalid Authentication Config: %v", err)
	}

	privilegedLoopbackToken := uuid.NewRandom().String()
	selfClientConfig, err := s.NewSelfClientConfig(privilegedLoopbackToken)
	if err != nil {
		glog.Fatalf("Failed to create clientset: %v", err)
	}
	client, err := s.NewSelfClient(privilegedLoopbackToken)
	if err != nil {
		glog.Errorf("Failed to create clientset: %v", err)
	}
	sharedInformers := informers.NewSharedInformerFactory(client, 10*time.Minute)

	authorizationConfig := authorizer.AuthorizationConfig{
		PolicyFile:                  s.AuthorizationPolicyFile,
		WebhookConfigFile:           s.AuthorizationWebhookConfigFile,
		WebhookCacheAuthorizedTTL:   s.AuthorizationWebhookCacheAuthorizedTTL,
		WebhookCacheUnauthorizedTTL: s.AuthorizationWebhookCacheUnauthorizedTTL,
		RBACSuperUser:               s.AuthorizationRBACSuperUser,
		InformerFactory:             sharedInformers,
	}
	authorizationModeNames := strings.Split(s.AuthorizationMode, ",")
	apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, authorizationConfig)
	if err != nil {
		glog.Fatalf("Invalid Authorization Config: %v", err)
	}

	admissionControlPluginNames := strings.Split(s.AdmissionControl, ",")

	// TODO(dims): We probably need to add an option "EnableLoopbackToken"
	if apiAuthenticator != nil {
		var uid = uuid.NewRandom().String()
		tokens := make(map[string]*user.DefaultInfo)
		tokens[privilegedLoopbackToken] = &user.DefaultInfo{
			Name:   user.APIServerUser,
			UID:    uid,
			Groups: []string{user.SystemPrivilegedGroup},
		}

		tokenAuthenticator := authenticator.NewAuthenticatorFromTokens(tokens)
		apiAuthenticator = authenticatorunion.New(tokenAuthenticator, apiAuthenticator)

		tokenAuthorizer := authorizer.NewPrivilegedGroups(user.SystemPrivilegedGroup)
		apiAuthorizer = authorizerunion.New(tokenAuthorizer, apiAuthorizer)
	}

	pluginInitializer := admission.NewPluginInitializer(sharedInformers, apiAuthorizer)

	admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile, pluginInitializer)
	if err != nil {
		glog.Fatalf("Failed to initialize plugins: %v", err)
	}

	proxyTransport := utilnet.SetTransportDefaults(&http.Transport{
		Dial:            proxyDialerFn,
		TLSClientConfig: proxyTLSClientConfig,
	})
	kubeVersion := version.Get()

	genericConfig.Version = &kubeVersion
	genericConfig.LoopbackClientConfig = selfClientConfig
	genericConfig.Authenticator = apiAuthenticator
	genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
	genericConfig.Authorizer = apiAuthorizer
	genericConfig.AuthorizerRBACSuperUser = s.AuthorizationRBACSuperUser
	genericConfig.AdmissionControl = admissionController
	genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
	genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
	genericConfig.OpenAPIConfig.Info.Title = "Kubernetes"
	genericConfig.OpenAPIConfig.Definitions = generatedopenapi.OpenAPIDefinitions
	genericConfig.EnableOpenAPISupport = true
	genericConfig.OpenAPIConfig.SecurityDefinitions = securityDefinitions

	config := &master.Config{
		GenericConfig: genericConfig.Config,

		StorageFactory:          storageFactory,
		EnableWatchCache:        s.EnableWatchCache,
		EnableCoreControllers:   true,
		DeleteCollectionWorkers: s.DeleteCollectionWorkers,
		EventTTL:                s.EventTTL,
		KubeletClientConfig:     s.KubeletConfig,
		EnableUISupport:         true,
		EnableLogsSupport:       true,
		ProxyTransport:          proxyTransport,

		Tunneler: tunneler,
	}

	if s.EnableWatchCache {
		glog.V(2).Infof("Initalizing cache sizes based on %dMB limit", s.TargetRAMMB)
		cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
		cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
	}

	m, err := config.Complete().New()
	if err != nil {
		return err
	}

	sharedInformers.Start(wait.NeverStop)
	m.GenericAPIServer.PrepareRun().Run()
	return nil
}