| /* |
| Copyright 2018 The Kubernetes Authors. |
| |
| Licensed under the Apache License, Version 2.0 (the "License"); |
| you may not use this file except in compliance with the License. |
| You may obtain a copy of the License at |
| |
| http://www.apache.org/licenses/LICENSE-2.0 |
| |
| Unless required by applicable law or agreed to in writing, software |
| distributed under the License is distributed on an "AS IS" BASIS, |
| WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| See the License for the specific language governing permissions and |
| limitations under the License. |
| */ |
| |
| package auth |
| |
| import ( |
| "fmt" |
| |
| "k8s.io/api/core/v1" |
| metav1 "k8s.io/apimachinery/pkg/apis/meta/v1" |
| "k8s.io/kubernetes/pkg/master/ports" |
| "k8s.io/kubernetes/test/e2e/framework" |
| imageutils "k8s.io/kubernetes/test/utils/image" |
| |
| . "github.com/onsi/ginkgo" |
| . "github.com/onsi/gomega" |
| ) |
| |
| var _ = SIGDescribe("[Feature:NodeAuthenticator]", func() { |
| |
| f := framework.NewDefaultFramework("node-authn") |
| var ns string |
| var nodeIPs []string |
| BeforeEach(func() { |
| ns = f.Namespace.Name |
| |
| nodeList, err := f.ClientSet.CoreV1().Nodes().List(metav1.ListOptions{}) |
| Expect(err).NotTo(HaveOccurred(), "failed to list nodes in namespace: %s", ns) |
| Expect(len(nodeList.Items)).NotTo(BeZero()) |
| |
| pickedNode := nodeList.Items[0] |
| nodeIPs = framework.GetNodeAddresses(&pickedNode, v1.NodeExternalIP) |
| // The pods running in the cluster can see the internal addresses. |
| nodeIPs = append(nodeIPs, framework.GetNodeAddresses(&pickedNode, v1.NodeInternalIP)...) |
| |
| // make sure ServiceAccount admission controller is enabled, so secret generation on SA creation works |
| saName := "default" |
| sa, err := f.ClientSet.CoreV1().ServiceAccounts(ns).Get(saName, metav1.GetOptions{}) |
| Expect(err).NotTo(HaveOccurred(), "failed to retrieve service account (%s:%s)", ns, saName) |
| Expect(len(sa.Secrets)).NotTo(BeZero()) |
| }) |
| |
| It("The kubelet's main port 10250 should reject requests with no credentials", func() { |
| pod := createNodeAuthTestPod(f) |
| for _, nodeIP := range nodeIPs { |
| // Anonymous authentication is disabled by default |
| result := framework.RunHostCmdOrDie(ns, pod.Name, fmt.Sprintf("curl -sIk -o /dev/null -w '%s' https://%s:%v/metrics", "%{http_code}", nodeIP, ports.KubeletPort)) |
| Expect(result).To(Or(Equal("401"), Equal("403")), "the kubelet's main port 10250 should reject requests with no credentials") |
| } |
| }) |
| |
| It("The kubelet can delegate ServiceAccount tokens to the API server", func() { |
| By("create a new ServiceAccount for authentication") |
| trueValue := true |
| newSA := &v1.ServiceAccount{ |
| ObjectMeta: metav1.ObjectMeta{ |
| Namespace: ns, |
| Name: "node-auth-newSA", |
| }, |
| AutomountServiceAccountToken: &trueValue, |
| } |
| _, err := f.ClientSet.CoreV1().ServiceAccounts(ns).Create(newSA) |
| Expect(err).NotTo(HaveOccurred(), "failed to create service account (%s:%s)", ns, newSA.Name) |
| |
| pod := createNodeAuthTestPod(f) |
| |
| for _, nodeIP := range nodeIPs { |
| result := framework.RunHostCmdOrDie(ns, |
| pod.Name, |
| fmt.Sprintf("curl -sIk -o /dev/null -w '%s' --header \"Authorization: Bearer `%s`\" https://%s:%v/metrics", |
| "%{http_code}", |
| "cat /var/run/secrets/kubernetes.io/serviceaccount/token", |
| nodeIP, ports.KubeletPort)) |
| Expect(result).To(Or(Equal("401"), Equal("403")), "the kubelet can delegate ServiceAccount tokens to the API server") |
| } |
| }) |
| }) |
| |
| func createNodeAuthTestPod(f *framework.Framework) *v1.Pod { |
| pod := &v1.Pod{ |
| ObjectMeta: metav1.ObjectMeta{ |
| GenerateName: "test-node-authn-", |
| }, |
| Spec: v1.PodSpec{ |
| Containers: []v1.Container{{ |
| Name: "test-node-authn", |
| Image: imageutils.GetE2EImage(imageutils.Hostexec), |
| Command: []string{"sleep 3600"}, |
| }}, |
| RestartPolicy: v1.RestartPolicyNever, |
| }, |
| } |
| |
| return f.PodClient().CreateSync(pod) |
| } |