// 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
}
// Run runs the specified APIServer. This should never exit.
func Run(s *options.ServerRunOptions) error {
// set defaults
if err := s.GenericServerRunOptions.DefaultAdvertiseAddress(s.SecureServing, s.InsecureServing); err != nil {
return err
}
if err := s.SecureServing.MaybeDefaultWithSelfSignedCerts(s.GenericServerRunOptions.AdvertiseAddress.String()); err != nil {
return fmt.Errorf("error creating self-signed certificates: %v", err)
}
if err := s.GenericServerRunOptions.DefaultExternalHost(); err != nil {
return fmt.Errorf("error setting the external host value: %v", err)
}
// validate options
if errs := s.Validate(); len(errs) != 0 {
return utilerrors.NewAggregate(errs)
}
// create config from options
genericConfig := genericapiserver.NewConfig(). // create the new config
ApplyOptions(s.GenericServerRunOptions). // apply the options selected
ApplyInsecureServingOptions(s.InsecureServing)
if _, err := genericConfig.ApplySecureServingOptions(s.SecureServing); err != nil {
return fmt.Errorf("failed to configure https: %s", err)
}
if _, err := genericConfig.ApplyAuthenticationOptions(s.Authentication); err != nil {
return fmt.Errorf("failed to configure authentication: %s", err)
}
// TODO: register cluster federation resources here.
resourceConfig := genericapiserver.NewResourceConfig()
if s.Etcd.StorageConfig.DeserializationCacheSize == 0 {
// When size of cache is not explicitly set, set it to 50000
s.Etcd.StorageConfig.DeserializationCacheSize = 50000
}
storageGroupsToEncodingVersion, err := s.GenericServerRunOptions.StorageGroupsToEncodingVersion()
if err != nil {
return fmt.Errorf("error generating storage version map: %s", err)
}
storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
s.Etcd.StorageConfig, s.GenericServerRunOptions.DefaultStorageMediaType, api.Codecs,
genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
[]schema.GroupVersionResource{}, resourceConfig, s.GenericServerRunOptions.RuntimeConfig)
if err != nil {
return fmt.Errorf("error in initializing storage factory: %s", err)
}
for _, override := range s.Etcd.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 := schema.GroupResource{Group: group, Resource: resource}
servers := strings.Split(tokens[1], ";")
storageFactory.SetEtcdLocation(groupResource, servers)
}
apiAuthenticator, securityDefinitions, err := authenticator.New(s.Authentication.ToAuthenticationConfig())
if err != nil {
return fmt.Errorf("invalid Authentication Config: %v", err)
}
privilegedLoopbackToken := uuid.NewRandom().String()
selfClientConfig, err := genericapiserver.NewSelfClientConfig(genericConfig.SecureServingInfo, genericConfig.InsecureServingInfo, privilegedLoopbackToken)
if err != nil {
return fmt.Errorf("failed to create clientset: %v", err)
}
client, err := internalclientset.NewForConfig(selfClientConfig)
if err != nil {
return fmt.Errorf("failed to create clientset: %v", err)
}
sharedInformers := informers.NewSharedInformerFactory(nil, client, 10*time.Minute)
authorizerconfig := s.Authorization.ToAuthorizationConfig(sharedInformers)
apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizerconfig)
if err != nil {
return fmt.Errorf("invalid Authorization Config: %v", err)
}
admissionControlPluginNames := strings.Split(s.GenericServerRunOptions.AdmissionControl, ",")
pluginInitializer := admission.NewPluginInitializer(sharedInformers, apiAuthorizer)
admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.GenericServerRunOptions.AdmissionControlConfigFile, pluginInitializer)
if err != nil {
return fmt.Errorf("failed to initialize plugins: %v", err)
}
kubeVersion := version.Get()
genericConfig.Version = &kubeVersion
genericConfig.LoopbackClientConfig = selfClientConfig
genericConfig.Authenticator = apiAuthenticator
genericConfig.Authorizer = apiAuthorizer
genericConfig.AdmissionControl = admissionController
genericConfig.OpenAPIConfig = genericapiserver.DefaultOpenAPIConfig(openapi.OpenAPIDefinitions)
genericConfig.OpenAPIConfig.SecurityDefinitions = securityDefinitions
genericConfig.SwaggerConfig = genericapiserver.DefaultSwaggerConfig()
genericConfig.LongRunningFunc = filters.BasicLongRunningRequestCheck(
sets.NewString("watch", "proxy"),
sets.NewString("attach", "exec", "proxy", "log", "portforward"),
)
// TODO: Move this to generic api server (Need to move the command line flag).
if s.GenericServerRunOptions.EnableWatchCache {
cachesize.InitializeWatchCacheSizes(s.GenericServerRunOptions.TargetRAMMB)
cachesize.SetWatchCacheSizes(s.GenericServerRunOptions.WatchCacheSizes)
}
m, err := genericConfig.Complete().New()
if err != nil {
return err
}
routes.UIRedirect{}.Install(m.HandlerContainer)
routes.Logs{}.Install(m.HandlerContainer)
// TODO: Refactor this code to share it with kube-apiserver rather than duplicating it here.
restOptionsFactory := &restOptionsFactory{
storageFactory: storageFactory,
enableGarbageCollection: s.GenericServerRunOptions.EnableGarbageCollection,
deleteCollectionWorkers: s.GenericServerRunOptions.DeleteCollectionWorkers,
}
if s.GenericServerRunOptions.EnableWatchCache {
restOptionsFactory.storageDecorator = genericregistry.StorageWithCacher
} else {
restOptionsFactory.storageDecorator = generic.UndecoratedStorage
}
installFederationAPIs(m, restOptionsFactory)
installCoreAPIs(s, m, restOptionsFactory)
installExtensionsAPIs(m, restOptionsFactory)
sharedInformers.Start(wait.NeverStop)
m.PrepareRun().Run(wait.NeverStop)
return nil
}
// Run runs the specified APIServer. This should never exit.
func Run(s *options.ServerRunOptions) error {
genericvalidation.VerifyEtcdServersList(s.ServerRunOptions)
genericapiserver.DefaultAndValidateRunOptions(s.ServerRunOptions)
// TODO: register cluster federation resources here.
resourceConfig := genericapiserver.NewResourceConfig()
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,
[]unversioned.GroupVersionResource{}, resourceConfig, s.RuntimeConfig)
if err != nil {
glog.Fatalf("error in initializing storage factory: %s", err)
}
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)
}
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,
KeystoneURL: s.KeystoneURL,
})
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()
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)
}
// 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)
}
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.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.Serializer = api.Codecs
genericConfig.OpenAPIDefinitions = openapi.OpenAPIDefinitions
genericConfig.EnableOpenAPISupport = true
// TODO: Move this to generic api server (Need to move the command line flag).
if s.EnableWatchCache {
cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
}
m, err := genericConfig.Complete().New()
if err != nil {
return err
}
routes.UIRedirect{}.Install(m.HandlerContainer)
routes.Logs{}.Install(m.HandlerContainer)
restOptionsFactory := restOptionsFactory{
storageFactory: storageFactory,
deleteCollectionWorkers: s.DeleteCollectionWorkers,
}
if s.EnableWatchCache {
restOptionsFactory.storageDecorator = registry.StorageWithCacher
} else {
restOptionsFactory.storageDecorator = generic.UndecoratedStorage
}
installFederationAPIs(m, restOptionsFactory)
installCoreAPIs(s, m, restOptionsFactory)
installExtensionsAPIs(m, restOptionsFactory)
sharedInformers.Start(wait.NeverStop)
m.Run()
return nil
}
// Run runs the specified APIServer. This should never exit.
func Run(s *options.ServerRunOptions) error {
genericvalidation.VerifyEtcdServersList(s.GenericServerRunOptions)
genericapiserver.DefaultAndValidateRunOptions(s.GenericServerRunOptions)
genericConfig := genericapiserver.NewConfig(). // create the new config
ApplyOptions(s.GenericServerRunOptions). // apply the options selected
Complete() // set default values based on the known values
serviceIPRange, apiServerServiceIP, err := genericapiserver.DefaultServiceIPRange(s.GenericServerRunOptions.ServiceClusterIPRange)
if err != nil {
glog.Fatalf("Error determining service IP ranges: %v", err)
}
if err := genericConfig.MaybeGenerateServingCerts(apiServerServiceIP); 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.GenericServerRunOptions.CloudProvider, s.GenericServerRunOptions.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.GenericServerRunOptions.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.GenericServerRunOptions.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.GenericServerRunOptions.TargetRAMMB / 60
s.GenericServerRunOptions.StorageConfig.DeserializationCacheSize = 25 * clusterSize
if s.GenericServerRunOptions.StorageConfig.DeserializationCacheSize < 1000 {
s.GenericServerRunOptions.StorageConfig.DeserializationCacheSize = 1000
}
}
storageGroupsToEncodingVersion, err := s.GenericServerRunOptions.StorageGroupsToEncodingVersion()
if err != nil {
glog.Fatalf("error generating storage version map: %s", err)
}
storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
s.GenericServerRunOptions.StorageConfig, s.GenericServerRunOptions.DefaultStorageMediaType, api.Codecs,
genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
// FIXME: this GroupVersionResource override should be configurable
[]schema.GroupVersionResource{batch.Resource("cronjobs").WithVersion("v2alpha1")},
master.DefaultAPIResourceConfigSource(), s.GenericServerRunOptions.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.GenericServerRunOptions.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 := schema.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.GenericServerRunOptions.TLSPrivateKeyFile != "" {
if authenticator.IsValidServiceAccountKeyFile(s.GenericServerRunOptions.TLSPrivateKeyFile) {
s.ServiceAccountKeyFiles = []string{s.GenericServerRunOptions.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.GenericServerRunOptions.AnonymousAuth,
AnyToken: s.GenericServerRunOptions.EnableAnyToken,
BasicAuthFile: s.GenericServerRunOptions.BasicAuthFile,
ClientCAFile: s.GenericServerRunOptions.ClientCAFile,
TokenAuthFile: s.GenericServerRunOptions.TokenAuthFile,
OIDCIssuerURL: s.GenericServerRunOptions.OIDCIssuerURL,
OIDCClientID: s.GenericServerRunOptions.OIDCClientID,
OIDCCAFile: s.GenericServerRunOptions.OIDCCAFile,
OIDCUsernameClaim: s.GenericServerRunOptions.OIDCUsernameClaim,
OIDCGroupsClaim: s.GenericServerRunOptions.OIDCGroupsClaim,
ServiceAccountKeyFiles: s.ServiceAccountKeyFiles,
ServiceAccountLookup: s.ServiceAccountLookup,
ServiceAccountTokenGetter: serviceAccountGetter,
KeystoneURL: s.GenericServerRunOptions.KeystoneURL,
KeystoneCAFile: s.GenericServerRunOptions.KeystoneCAFile,
WebhookTokenAuthnConfigFile: s.WebhookTokenAuthnConfigFile,
WebhookTokenAuthnCacheTTL: s.WebhookTokenAuthnCacheTTL,
RequestHeaderConfig: s.GenericServerRunOptions.AuthenticationRequestHeaderConfig(),
})
if err != nil {
glog.Fatalf("Invalid Authentication Config: %v", err)
}
privilegedLoopbackToken := uuid.NewRandom().String()
selfClientConfig, err := s.GenericServerRunOptions.NewSelfClientConfig(privilegedLoopbackToken)
if err != nil {
glog.Fatalf("Failed to create clientset: %v", err)
}
client, err := s.GenericServerRunOptions.NewSelfClient(privilegedLoopbackToken)
if err != nil {
glog.Errorf("Failed to create clientset: %v", err)
}
sharedInformers := informers.NewSharedInformerFactory(nil, client, 10*time.Minute)
authorizationConfig := authorizer.AuthorizationConfig{
PolicyFile: s.GenericServerRunOptions.AuthorizationPolicyFile,
WebhookConfigFile: s.GenericServerRunOptions.AuthorizationWebhookConfigFile,
WebhookCacheAuthorizedTTL: s.GenericServerRunOptions.AuthorizationWebhookCacheAuthorizedTTL,
WebhookCacheUnauthorizedTTL: s.GenericServerRunOptions.AuthorizationWebhookCacheUnauthorizedTTL,
RBACSuperUser: s.GenericServerRunOptions.AuthorizationRBACSuperUser,
InformerFactory: sharedInformers,
}
authorizationModeNames := strings.Split(s.GenericServerRunOptions.AuthorizationMode, ",")
apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, authorizationConfig)
if err != nil {
glog.Fatalf("Invalid Authorization Config: %v", err)
}
admissionControlPluginNames := strings.Split(s.GenericServerRunOptions.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.GenericServerRunOptions.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.Authorizer = apiAuthorizer
genericConfig.AdmissionControl = admissionController
genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
genericConfig.OpenAPIConfig.Info.Title = "Kubernetes"
genericConfig.OpenAPIConfig.Definitions = generatedopenapi.OpenAPIDefinitions
genericConfig.EnableOpenAPISupport = true
genericConfig.EnableMetrics = true
genericConfig.OpenAPIConfig.SecurityDefinitions = securityDefinitions
config := &master.Config{
GenericConfig: genericConfig.Config,
StorageFactory: storageFactory,
EnableWatchCache: s.GenericServerRunOptions.EnableWatchCache,
EnableCoreControllers: true,
DeleteCollectionWorkers: s.GenericServerRunOptions.DeleteCollectionWorkers,
EventTTL: s.EventTTL,
KubeletClientConfig: s.KubeletConfig,
EnableUISupport: true,
EnableLogsSupport: true,
ProxyTransport: proxyTransport,
Tunneler: tunneler,
ServiceIPRange: serviceIPRange,
APIServerServiceIP: apiServerServiceIP,
APIServerServicePort: 443,
ServiceNodePortRange: s.GenericServerRunOptions.ServiceNodePortRange,
KubernetesServiceNodePort: s.GenericServerRunOptions.KubernetesServiceNodePort,
MasterCount: s.GenericServerRunOptions.MasterCount,
}
if s.GenericServerRunOptions.EnableWatchCache {
glog.V(2).Infof("Initalizing cache sizes based on %dMB limit", s.GenericServerRunOptions.TargetRAMMB)
cachesize.InitializeWatchCacheSizes(s.GenericServerRunOptions.TargetRAMMB)
cachesize.SetWatchCacheSizes(s.GenericServerRunOptions.WatchCacheSizes)
}
m, err := config.Complete().New()
if err != nil {
return err
}
sharedInformers.Start(wait.NeverStop)
m.GenericAPIServer.PrepareRun().Run(wait.NeverStop)
return nil
}
// Run runs the specified APIServer. This should never exit.
func Run(s *options.ServerRunOptions) 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)
}
// TODO: register cluster federation resources here.
resourceConfig := genericapiserver.NewResourceConfig()
if s.StorageConfig.DeserializationCacheSize == 0 {
// When size of cache is not explicitly set, set it to 50000
s.StorageConfig.DeserializationCacheSize = 50000
}
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,
[]unversioned.GroupVersionResource{}, resourceConfig, s.RuntimeConfig)
if err != nil {
glog.Fatalf("error in initializing storage factory: %s", err)
}
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)
}
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,
KeystoneURL: s.KeystoneURL,
})
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)
}
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.Definitions = openapi.OpenAPIDefinitions
genericConfig.EnableOpenAPISupport = true
genericConfig.OpenAPIConfig.SecurityDefinitions = securityDefinitions
// TODO: Move this to generic api server (Need to move the command line flag).
if s.EnableWatchCache {
cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
}
m, err := genericConfig.New()
if err != nil {
return err
}
routes.UIRedirect{}.Install(m.HandlerContainer)
routes.Logs{}.Install(m.HandlerContainer)
restOptionsFactory := restOptionsFactory{
storageFactory: storageFactory,
deleteCollectionWorkers: s.DeleteCollectionWorkers,
}
if s.EnableWatchCache {
restOptionsFactory.storageDecorator = registry.StorageWithCacher
} else {
restOptionsFactory.storageDecorator = generic.UndecoratedStorage
}
installFederationAPIs(m, restOptionsFactory)
installCoreAPIs(s, m, restOptionsFactory)
installExtensionsAPIs(m, restOptionsFactory)
sharedInformers.Start(wait.NeverStop)
m.PrepareRun().Run()
return nil
}
// Run runs the specified APIServer. This should never exit.
func Run(s *options.ServerRunOptions) error {
if errs := s.Etcd.Validate(); len(errs) > 0 {
return utilerrors.NewAggregate(errs)
}
if err := s.GenericServerRunOptions.DefaultExternalAddress(s.SecureServing, s.InsecureServing); err != nil {
return err
}
serviceIPRange, apiServerServiceIP, err := master.DefaultServiceIPRange(s.GenericServerRunOptions.ServiceClusterIPRange)
if err != nil {
return fmt.Errorf("error determining service IP ranges: %v", err)
}
if err := s.SecureServing.MaybeDefaultWithSelfSignedCerts(s.GenericServerRunOptions.AdvertiseAddress.String(), apiServerServiceIP); err != nil {
return fmt.Errorf("error creating self-signed certificates: %v", err)
}
genericapiserver.DefaultAndValidateRunOptions(s.GenericServerRunOptions)
genericConfig := genericapiserver.NewConfig(). // create the new config
ApplyOptions(s.GenericServerRunOptions). // apply the options selected
ApplyInsecureServingOptions(s.InsecureServing)
if _, err := genericConfig.ApplySecureServingOptions(s.SecureServing); err != nil {
return fmt.Errorf("failed to configure https: %s", err)
}
if _, err = genericConfig.ApplyAuthenticationOptions(s.Authentication); err != nil {
return fmt.Errorf("failed to configure authentication: %s", 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.GenericServerRunOptions.CloudProvider, s.GenericServerRunOptions.CloudConfigFile)
if err != nil {
return fmt.Errorf("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 {
return fmt.Errorf("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.Etcd.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.GenericServerRunOptions.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.GenericServerRunOptions.TargetRAMMB / 60
s.Etcd.StorageConfig.DeserializationCacheSize = 25 * clusterSize
if s.Etcd.StorageConfig.DeserializationCacheSize < 1000 {
s.Etcd.StorageConfig.DeserializationCacheSize = 1000
}
}
storageGroupsToEncodingVersion, err := s.GenericServerRunOptions.StorageGroupsToEncodingVersion()
if err != nil {
return fmt.Errorf("error generating storage version map: %s", err)
}
storageFactory, err := genericapiserver.BuildDefaultStorageFactory(
s.Etcd.StorageConfig, s.GenericServerRunOptions.DefaultStorageMediaType, api.Codecs,
genericapiserver.NewDefaultResourceEncodingConfig(), storageGroupsToEncodingVersion,
// FIXME: this GroupVersionResource override should be configurable
[]schema.GroupVersionResource{batch.Resource("cronjobs").WithVersion("v2alpha1")},
master.DefaultAPIResourceConfigSource(), s.GenericServerRunOptions.RuntimeConfig)
if err != nil {
return fmt.Errorf("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.Etcd.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 := schema.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.Authentication.ServiceAccounts.KeyFiles) == 0 && s.SecureServing.ServerCert.CertKey.KeyFile != "" {
if authenticator.IsValidServiceAccountKeyFile(s.SecureServing.ServerCert.CertKey.KeyFile) {
s.Authentication.ServiceAccounts.KeyFiles = []string{s.SecureServing.ServerCert.CertKey.KeyFile}
} else {
glog.Warning("No TLS key provided, service account token authentication disabled")
}
}
authenticatorConfig := s.Authentication.ToAuthenticationConfig()
if s.Authentication.ServiceAccounts.Lookup {
// 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 {
return fmt.Errorf("unable to get serviceaccounts storage: %v", err)
}
authenticatorConfig.ServiceAccountTokenGetter = serviceaccountcontroller.NewGetterFromStorageInterface(storageConfig, storageFactory.ResourcePrefix(api.Resource("serviceaccounts")), storageFactory.ResourcePrefix(api.Resource("secrets")))
}
apiAuthenticator, securityDefinitions, err := authenticator.New(authenticatorConfig)
if err != nil {
return fmt.Errorf("invalid Authentication Config: %v", err)
}
privilegedLoopbackToken := uuid.NewRandom().String()
selfClientConfig, err := genericapiserver.NewSelfClientConfig(genericConfig.SecureServingInfo, genericConfig.InsecureServingInfo, privilegedLoopbackToken)
if err != nil {
return fmt.Errorf("failed to create clientset: %v", err)
}
client, err := internalclientset.NewForConfig(selfClientConfig)
if err != nil {
kubeAPIVersions := os.Getenv("KUBE_API_VERSIONS")
if len(kubeAPIVersions) == 0 {
return fmt.Errorf("failed to create clientset: %v", err)
}
// KUBE_API_VERSIONS is used in test-update-storage-objects.sh, disabling a number of API
// groups. This leads to a nil client above and undefined behaviour further down.
// TODO: get rid of KUBE_API_VERSIONS or define sane behaviour if set
glog.Errorf("Failed to create clientset with KUBE_API_VERSIONS=%q. KUBE_API_VERSIONS is only for testing. Things will break.", kubeAPIVersions)
}
sharedInformers := informers.NewSharedInformerFactory(nil, client, 10*time.Minute)
authorizationConfig := s.Authorization.ToAuthorizationConfig(sharedInformers)
apiAuthorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationConfig)
if err != nil {
return fmt.Errorf("invalid Authorization Config: %v", err)
}
admissionControlPluginNames := strings.Split(s.GenericServerRunOptions.AdmissionControl, ",")
pluginInitializer := admission.NewPluginInitializer(sharedInformers, apiAuthorizer)
admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.GenericServerRunOptions.AdmissionControlConfigFile, pluginInitializer)
if err != nil {
return fmt.Errorf("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.Authorizer = apiAuthorizer
genericConfig.AdmissionControl = admissionController
genericConfig.OpenAPIConfig = genericapiserver.DefaultOpenAPIConfig(generatedopenapi.OpenAPIDefinitions)
genericConfig.OpenAPIConfig.SecurityDefinitions = securityDefinitions
genericConfig.OpenAPIConfig.Info.Title = "Kubernetes"
genericConfig.SwaggerConfig = genericapiserver.DefaultSwaggerConfig()
genericConfig.EnableMetrics = true
genericConfig.LongRunningFunc = filters.BasicLongRunningRequestCheck(
sets.NewString("watch", "proxy"),
sets.NewString("attach", "exec", "proxy", "log", "portforward"),
)
config := &master.Config{
GenericConfig: genericConfig,
APIResourceConfigSource: storageFactory.APIResourceConfigSource,
StorageFactory: storageFactory,
EnableWatchCache: s.GenericServerRunOptions.EnableWatchCache,
EnableCoreControllers: true,
DeleteCollectionWorkers: s.GenericServerRunOptions.DeleteCollectionWorkers,
EventTTL: s.EventTTL,
KubeletClientConfig: s.KubeletConfig,
EnableUISupport: true,
EnableLogsSupport: true,
ProxyTransport: proxyTransport,
Tunneler: tunneler,
ServiceIPRange: serviceIPRange,
APIServerServiceIP: apiServerServiceIP,
APIServerServicePort: 443,
ServiceNodePortRange: s.GenericServerRunOptions.ServiceNodePortRange,
KubernetesServiceNodePort: s.GenericServerRunOptions.KubernetesServiceNodePort,
MasterCount: s.GenericServerRunOptions.MasterCount,
}
if s.GenericServerRunOptions.EnableWatchCache {
glog.V(2).Infof("Initalizing cache sizes based on %dMB limit", s.GenericServerRunOptions.TargetRAMMB)
cachesize.InitializeWatchCacheSizes(s.GenericServerRunOptions.TargetRAMMB)
cachesize.SetWatchCacheSizes(s.GenericServerRunOptions.WatchCacheSizes)
}
m, err := config.Complete().New()
if err != nil {
return err
}
sharedInformers.Start(wait.NeverStop)
m.GenericAPIServer.PrepareRun().Run(wait.NeverStop)
return nil
}
func newAPIServer(s *genericoptions.ServerRunOptions) (*genericapiserver.GenericAPIServer, error) {
genericapiserver.DefaultAndValidateRunOptions(s)
resourceConfig := genericapiserver.NewResourceConfig()
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,
[]unversioned.GroupVersionResource{}, resourceConfig, s.RuntimeConfig)
if err != nil {
glog.Fatalf("error in initializing storage factory: %s", err)
}
authn, 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,
KeystoneURL: s.KeystoneURL,
})
if err != nil {
glog.Fatalf("Invalid Authentication Config: %v", err)
}
authorizationModeNames := strings.Split(s.AuthorizationMode, ",")
authorizationConfig := genericauthorizer.AuthorizationConfig{
PolicyFile: s.AuthorizationPolicyFile,
WebhookConfigFile: s.AuthorizationWebhookConfigFile,
WebhookCacheAuthorizedTTL: s.AuthorizationWebhookCacheAuthorizedTTL,
WebhookCacheUnauthorizedTTL: s.AuthorizationWebhookCacheUnauthorizedTTL,
RBACSuperUser: s.AuthorizationRBACSuperUser,
}
authorizer, err := genericauthorizer.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)
}
sharedInformers := informers.NewSharedInformerFactory(client, 10*time.Minute)
pluginInitializer := admission.NewPluginInitializer(sharedInformers)
admissionController, err := admission.NewFromPlugins(client, admissionControlPluginNames, s.AdmissionControlConfigFile, pluginInitializer)
genericConfig := genericapiserver.NewConfig(s)
// TODO: Move the following to generic api server as well.
genericConfig.Authenticator = authn
genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
genericConfig.Authorizer = authorizer
genericConfig.AdmissionControl = admissionController
genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
genericConfig.Serializer = api.Codecs
// TODO: Move this to generic api server (Need to move the command line flag).
if s.EnableWatchCache {
cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
}
return genericConfig.New()
}
// Run runs the specified APIServer. This should never exit.
func Run(s *options.ServerRunOptions) error {
genericvalidation.VerifyEtcdServersList(s.ServerRunOptions)
genericapiserver.DefaultAndValidateRunOptions(s.ServerRunOptions)
// TODO: register cluster federation resources here.
resourceConfig := genericapiserver.NewResourceConfig()
if s.StorageConfig.DeserializationCacheSize == 0 {
// When size of cache is not explicitly set, set it to 50000
s.StorageConfig.DeserializationCacheSize = 50000
}
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,
[]unversioned.GroupVersionResource{}, resourceConfig, s.RuntimeConfig)
if err != nil {
glog.Fatalf("error in initializing storage factory: %s", err)
}
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)
}
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,
KeystoneURL: s.KeystoneURL,
})
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")))
}
authorizer, err := authorizer.NewAuthorizerFromAuthorizationConfig(authorizationModeNames, 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)
}
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.StorageFactory = storageFactory
genericConfig.Authenticator = authenticator
genericConfig.SupportsBasicAuth = len(s.BasicAuthFile) > 0
genericConfig.Authorizer = authorizer
genericConfig.AuthorizerRBACSuperUser = s.AuthorizationRBACSuperUser
genericConfig.AdmissionControl = admissionController
genericConfig.APIResourceConfigSource = storageFactory.APIResourceConfigSource
genericConfig.MasterServiceNamespace = s.MasterServiceNamespace
genericConfig.Serializer = api.Codecs
// TODO: Move this to generic api server (Need to move the command line flag).
if s.EnableWatchCache {
cachesize.InitializeWatchCacheSizes(s.TargetRAMMB)
cachesize.SetWatchCacheSizes(s.WatchCacheSizes)
}
m, err := genericapiserver.New(genericConfig)
if err != nil {
return err
}
installFederationAPIs(s, m, storageFactory)
installCoreAPIs(s, m, storageFactory)
installExtensionsAPIs(s, m, storageFactory)
sharedInformers.Start(wait.NeverStop)
m.Run(s.ServerRunOptions)
return nil
}