add namespaced role bindings

pkg/apis/rbac/helpers.go

@@ -282,6 +282,22 @@ func NewRoleBinding(roleName, namespace string) *RoleBindingBuilder {
 	}
 }
 
+func NewRoleBindingForClusterRole(roleName, namespace string) *RoleBindingBuilder {
+	return &RoleBindingBuilder{
+		RoleBinding: RoleBinding{
+			ObjectMeta: metav1.ObjectMeta{
+				Name:      roleName,
+				Namespace: namespace,
+			},
+			RoleRef: RoleRef{
+				APIGroup: GroupName,
+				Kind:     "ClusterRole",
+				Name:     roleName,
+			},
+		},
+	}
+}
+
 // Groups adds the specified groups as the subjects of the RoleBinding.
 func (r *RoleBindingBuilder) Groups(groups ...string) *RoleBindingBuilder {
 	for _, group := range groups {

pkg/registry/rbac/rest/storage_rbac.go

@@ -233,6 +233,38 @@ func PostStartHook(hookContext genericapiserver.PostStartHookContext) error {
 			}
 		}
 
+		// ensure bootstrap namespaced rolebindings are created or reconciled
+		for namespace, roleBindings := range bootstrappolicy.NamespaceRoleBindings() {
+			for _, roleBinding := range roleBindings {
+				opts := reconciliation.ReconcileRoleBindingOptions{
+					RoleBinding: reconciliation.RoleBindingAdapter{RoleBinding: &roleBinding},
+					Client:      reconciliation.RoleBindingClientAdapter{Client: clientset},
+					Confirm:     true,
+				}
+				err := retry.RetryOnConflict(retry.DefaultBackoff, func() error {
+					result, err := opts.Run()
+					if err != nil {
+						return err
+					}
+					switch {
+					case result.Protected && result.Operation != reconciliation.ReconcileNone:
+						glog.Warningf("skipped reconcile-protected rolebinding.%s/%s in %v with missing subjects: %v", rbac.GroupName, roleBinding.Name, namespace, result.MissingSubjects)
+					case result.Operation == reconciliation.ReconcileUpdate:
+						glog.Infof("updated rolebinding.%s/%s in %v with additional subjects: %v", rbac.GroupName, roleBinding.Name, namespace, result.MissingSubjects)
+					case result.Operation == reconciliation.ReconcileCreate:
+						glog.Infof("created rolebinding.%s/%s in %v", rbac.GroupName, roleBinding.Name, namespace)
+					case result.Operation == reconciliation.ReconcileRecreate:
+						glog.Infof("recreated rolebinding.%s/%s in %v", rbac.GroupName, roleBinding.Name, namespace)
+					}
+					return nil
+				})
+				if err != nil {
+					// don't fail on failures, try to create as many as you can
+					utilruntime.HandleError(fmt.Errorf("unable to reconcile rolebinding.%s/%s in %v: %v", rbac.GroupName, roleBinding.Name, namespace, err))
+				}
+			}
+		}
+
 		return true, nil
 	})
 	// if we're never able to make it through intialization, kill the API server

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/namespace_policy.go

@@ -28,6 +28,9 @@ import (
 var (
 	// namespaceRoles is a map of namespace to slice of roles to create
 	namespaceRoles = map[string][]rbac.Role{}
+
+	// namespaceRoleBindings is a map of namespace to slice of roleBindings to create
+	namespaceRoleBindings = map[string][]rbac.RoleBinding{}
 )
 
 func addNamespaceRole(namespace string, role rbac.Role) {
@@ -48,6 +51,24 @@ func addNamespaceRole(namespace string, role rbac.Role) {
 	namespaceRoles[namespace] = existingRoles
 }
 
+func addNamespaceRoleBinding(namespace string, roleBinding rbac.RoleBinding) {
+	if !strings.HasPrefix(namespace, "kube-") {
+		glog.Fatalf(`roles can only be bootstrapped into reserved namespaces starting with "kube-", not %q`, namespace)
+	}
+
+	existingRoleBindings := namespaceRoleBindings[namespace]
+	for _, existingRoleBinding := range existingRoleBindings {
+		if roleBinding.Name == existingRoleBinding.Name {
+			glog.Fatalf("rolebinding %q was already registered in %q", roleBinding.Name, namespace)
+		}
+	}
+
+	roleBinding.Namespace = namespace
+	addDefaultMetadata(&roleBinding)
+	existingRoleBindings = append(existingRoleBindings, roleBinding)
+	namespaceRoleBindings[namespace] = existingRoleBindings
+}
+
 func init() {
 	addNamespaceRole(metav1.NamespaceSystem, rbac.Role{
 		// role for finding authentication config info for starting a server
@@ -63,3 +84,8 @@ func init() {
 func NamespaceRoles() map[string][]rbac.Role {
 	return namespaceRoles
 }
+
+// NamespaceRoleBindings returns a map of namespace to slice of roles to create
+func NamespaceRoleBindings() map[string][]rbac.RoleBinding {
+	return namespaceRoleBindings
+}

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/policy_test.go

@@ -173,6 +173,28 @@ func TestBootstrapNamespaceRoles(t *testing.T) {
 	testObjects(t, list, "namespace-roles.yaml")
 }
 
+func TestBootstrapNamespaceRoleBindings(t *testing.T) {
+	list := &api.List{}
+	names := sets.NewString()
+	roleBindings := map[string]runtime.Object{}
+
+	namespaceRoleBindings := bootstrappolicy.NamespaceRoleBindings()
+	for _, namespace := range sets.StringKeySet(namespaceRoleBindings).List() {
+		bootstrapRoleBindings := namespaceRoleBindings[namespace]
+		for i := range bootstrapRoleBindings {
+			roleBinding := bootstrapRoleBindings[i]
+			names.Insert(roleBinding.Name)
+			roleBindings[roleBinding.Name] = &roleBinding
+		}
+
+		for _, name := range names.List() {
+			list.Items = append(list.Items, roleBindings[name])
+		}
+	}
+
+	testObjects(t, list, "namespace-role-bindings.yaml")
+}
+
 func TestBootstrapClusterRoles(t *testing.T) {
 	list := &api.List{}
 	names := sets.NewString()

plugin/pkg/auth/authorizer/rbac/bootstrappolicy/testdata/namespace-role-bindings.yaml

+apiVersion: v1
+items: null
+kind: List
+metadata: {}