// mustSetupScheduler starts the following components:
// - k8s api server (a.k.a. master)
// - scheduler
// It returns scheduler config factory and destroyFunc which should be used to
// remove resources after finished.
// Notes on rate limiter:
// - client rate limit is set to 5000.
func mustSetupScheduler() (schedulerConfigFactory *factory.ConfigFactory, destroyFunc func()) {
h := &framework.MasterHolder{Initialized: make(chan struct{})}
s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
<-h.Initialized
h.M.GenericAPIServer.Handler.ServeHTTP(w, req)
}))
framework.RunAMasterUsingServer(framework.NewIntegrationTestMasterConfig(), s, h)
clientSet := clientset.NewForConfigOrDie(&restclient.Config{
Host: s.URL,
ContentConfig: restclient.ContentConfig{GroupVersion: ®istered.GroupOrDie(api.GroupName).GroupVersion},
QPS: 5000.0,
Burst: 5000,
})
schedulerConfigFactory = factory.NewConfigFactory(clientSet, api.DefaultSchedulerName, api.DefaultHardPodAffinitySymmetricWeight, api.DefaultFailureDomains)
schedulerConfig, err := schedulerConfigFactory.Create()
if err != nil {
panic("Couldn't create scheduler config")
}
eventBroadcaster := record.NewBroadcaster()
schedulerConfig.Recorder = eventBroadcaster.NewRecorder(api.EventSource{Component: "scheduler"})
eventBroadcaster.StartRecordingToSink(&unversionedcore.EventSinkImpl{Interface: clientSet.Core().Events("")})
scheduler.New(schedulerConfig).Run()
destroyFunc = func() {
glog.Infof("destroying")
close(schedulerConfig.StopEverything)
s.Close()
glog.Infof("destroyed")
}
return
}
// 1.2 code gets:
// quota_test.go:95: Took 4.218619579s to scale up without quota
// quota_test.go:199: unexpected error: timed out waiting for the condition, ended with 342 pods (1 minute)
// 1.3+ code gets:
// quota_test.go:100: Took 4.196205966s to scale up without quota
// quota_test.go:115: Took 12.021640372s to scale up with quota
func TestQuota(t *testing.T) {
// Set up a master
h := &framework.MasterHolder{Initialized: make(chan struct{})}
s := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
<-h.Initialized
h.M.GenericAPIServer.Handler.ServeHTTP(w, req)
}))
defer s.Close()
admissionCh := make(chan struct{})
clientset := clientset.NewForConfigOrDie(&restclient.Config{QPS: -1, Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: ®istered.GroupOrDie(v1.GroupName).GroupVersion}})
internalClientset := internalclientset.NewForConfigOrDie(&restclient.Config{QPS: -1, Host: s.URL, ContentConfig: restclient.ContentConfig{GroupVersion: ®istered.GroupOrDie(v1.GroupName).GroupVersion}})
admission, err := resourcequota.NewResourceQuota(internalClientset, quotainstall.NewRegistry(nil, nil), 5, admissionCh)
if err != nil {
t.Fatalf("unexpected error: %v", err)
}
defer close(admissionCh)
masterConfig := framework.NewIntegrationTestMasterConfig()
masterConfig.GenericConfig.AdmissionControl = admission
framework.RunAMasterUsingServer(masterConfig, s, h)
ns := framework.CreateTestingNamespace("quotaed", s, t)
defer framework.DeleteTestingNamespace(ns, s, t)
ns2 := framework.CreateTestingNamespace("non-quotaed", s, t)
defer framework.DeleteTestingNamespace(ns2, s, t)
controllerCh := make(chan struct{})
defer close(controllerCh)
go replicationcontroller.NewReplicationManagerFromClientForIntegration(clientset, controller.NoResyncPeriodFunc, replicationcontroller.BurstReplicas, 4096).
Run(3, controllerCh)
resourceQuotaRegistry := quotainstall.NewRegistry(clientset, nil)
groupKindsToReplenish := []schema.GroupKind{
api.Kind("Pod"),
}
resourceQuotaControllerOptions := &resourcequotacontroller.ResourceQuotaControllerOptions{
KubeClient: clientset,
ResyncPeriod: controller.NoResyncPeriodFunc,
Registry: resourceQuotaRegistry,
GroupKindsToReplenish: groupKindsToReplenish,
ReplenishmentResyncPeriod: controller.NoResyncPeriodFunc,
ControllerFactory: resourcequotacontroller.NewReplenishmentControllerFactoryFromClient(clientset),
}
go resourcequotacontroller.NewResourceQuotaController(resourceQuotaControllerOptions).Run(2, controllerCh)
startTime := time.Now()
scale(t, ns2.Name, clientset)
endTime := time.Now()
t.Logf("Took %v to scale up without quota", endTime.Sub(startTime))
quota := &v1.ResourceQuota{
ObjectMeta: v1.ObjectMeta{
Name: "quota",
Namespace: ns.Name,
},
Spec: v1.ResourceQuotaSpec{
Hard: v1.ResourceList{
v1.ResourcePods: resource.MustParse("1000"),
},
},
}
waitForQuota(t, quota, clientset)
startTime = time.Now()
scale(t, "quotaed", clientset)
endTime = time.Now()
t.Logf("Took %v to scale up with quota", endTime.Sub(startTime))
}
// startServiceAccountTestServer returns a started server
// It is the responsibility of the caller to ensure the returned stopFunc is called
func startServiceAccountTestServer(t *testing.T) (*clientset.Clientset, restclient.Config, func()) {
// Listener
h := &framework.MasterHolder{Initialized: make(chan struct{})}
apiServer := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, req *http.Request) {
<-h.Initialized
h.M.GenericAPIServer.Handler.ServeHTTP(w, req)
}))
// Anonymous client config
clientConfig := restclient.Config{Host: apiServer.URL, ContentConfig: restclient.ContentConfig{GroupVersion: ®istered.GroupOrDie(v1.GroupName).GroupVersion}}
// Root client
// TODO: remove rootClient after we refactor pkg/admission to use the clientset.
rootClientset := clientset.NewForConfigOrDie(&restclient.Config{Host: apiServer.URL, ContentConfig: restclient.ContentConfig{GroupVersion: ®istered.GroupOrDie(v1.GroupName).GroupVersion}, BearerToken: rootToken})
internalRootClientset := internalclientset.NewForConfigOrDie(&restclient.Config{Host: apiServer.URL, ContentConfig: restclient.ContentConfig{GroupVersion: ®istered.GroupOrDie(v1.GroupName).GroupVersion}, BearerToken: rootToken})
// Set up two authenticators:
// 1. A token authenticator that maps the rootToken to the "root" user
// 2. A ServiceAccountToken authenticator that validates ServiceAccount tokens
rootTokenAuth := authenticator.TokenFunc(func(token string) (user.Info, bool, error) {
if token == rootToken {
return &user.DefaultInfo{Name: rootUserName}, true, nil
}
return nil, false, nil
})
serviceAccountKey, _ := rsa.GenerateKey(rand.Reader, 2048)
serviceAccountTokenGetter := serviceaccountcontroller.NewGetterFromClient(rootClientset)
serviceAccountTokenAuth := serviceaccount.JWTTokenAuthenticator([]interface{}{&serviceAccountKey.PublicKey}, true, serviceAccountTokenGetter)
authenticator := union.New(
bearertoken.New(rootTokenAuth),
bearertoken.New(serviceAccountTokenAuth),
)
// Set up a stub authorizer:
// 1. The "root" user is allowed to do anything
// 2. ServiceAccounts named "ro" are allowed read-only operations in their namespace
// 3. ServiceAccounts named "rw" are allowed any operation in their namespace
authorizer := authorizer.AuthorizerFunc(func(attrs authorizer.Attributes) (bool, string, error) {
username := ""
if user := attrs.GetUser(); user != nil {
username = user.GetName()
}
ns := attrs.GetNamespace()
// If the user is "root"...
if username == rootUserName {
// allow them to do anything
return true, "", nil
}
// If the user is a service account...
if serviceAccountNamespace, serviceAccountName, err := serviceaccount.SplitUsername(username); err == nil {
// Limit them to their own namespace
if serviceAccountNamespace == ns {
switch serviceAccountName {
case readOnlyServiceAccountName:
if attrs.IsReadOnly() {
return true, "", nil
}
case readWriteServiceAccountName:
return true, "", nil
}
}
}
return false, fmt.Sprintf("User %s is denied (ns=%s, readonly=%v, resource=%s)", username, ns, attrs.IsReadOnly(), attrs.GetResource()), nil
})
// Set up admission plugin to auto-assign serviceaccounts to pods
serviceAccountAdmission := serviceaccountadmission.NewServiceAccount(internalRootClientset)
masterConfig := framework.NewMasterConfig()
masterConfig.GenericConfig.EnableIndex = true
masterConfig.GenericConfig.Authenticator = authenticator
masterConfig.GenericConfig.Authorizer = authorizer
masterConfig.GenericConfig.AdmissionControl = serviceAccountAdmission
framework.RunAMasterUsingServer(masterConfig, apiServer, h)
// Start the service account and service account token controllers
stopCh := make(chan struct{})
tokenController := serviceaccountcontroller.NewTokensController(rootClientset, serviceaccountcontroller.TokensControllerOptions{TokenGenerator: serviceaccount.JWTTokenGenerator(serviceAccountKey)})
go tokenController.Run(1, stopCh)
informers := informers.NewSharedInformerFactory(rootClientset, nil, controller.NoResyncPeriodFunc())
serviceAccountController := serviceaccountcontroller.NewServiceAccountsController(informers.ServiceAccounts(), informers.Namespaces(), rootClientset, serviceaccountcontroller.DefaultServiceAccountsControllerOptions())
informers.Start(stopCh)
go serviceAccountController.Run(5, stopCh)
// Start the admission plugin reflectors
serviceAccountAdmission.Run()
stop := func() {
close(stopCh)
serviceAccountAdmission.Stop()
apiServer.Close()
}
return rootClientset, clientConfig, stop
}