controller.go

func (c *NamespaceController) createRoleBinding(obj interface{}) {
	namespaceObj := obj.(*v1.Namespace)
	namespaceName := namespaceObj.Name

	roleBinding := &v1beta1.RoleBinding{
		TypeMeta: metav1.TypeMeta{
			Kind:       "RoleBinding",
			APIVersion: "rbac.authorization.k8s.io/v1beta1",
		},
		ObjectMeta: metav1.ObjectMeta{
			Name:      fmt.Sprintf("ad-kubernetes-%s", namespaceName),
			Namespace: namespaceName,
		},
		Subjects: []v1beta1.Subject{
			v1beta1.Subject{
				Kind: "Group",
				Name: fmt.Sprintf("ad-kubernetes-%s", namespaceName),
			},
		},
		RoleRef: v1beta1.RoleRef{
			APIGroup: "rbac.authorization.k8s.io",
			Kind:     "ClusterRole",
			Name:     "edit",
		},
	}

	_, err := c.kclient.Rbac().RoleBindings(namespaceName).Create(roleBinding)

	if err != nil {
		log.Println(fmt.Sprintf("Failed to create Role Binding: %s", err.Error()))
	} else {
		log.Println(fmt.Sprintf("Created AD RoleBinding for Namespace: %s", roleBinding.Name))
	}
}