mirror of https://github.com/k3s-io/k3s
109 lines
3.7 KiB
Go
109 lines
3.7 KiB
Go
/*
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Copyright 2018 The Kubernetes Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package auth
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import (
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"fmt"
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"k8s.io/api/core/v1"
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metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
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"k8s.io/kubernetes/pkg/master/ports"
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"k8s.io/kubernetes/test/e2e/framework"
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imageutils "k8s.io/kubernetes/test/utils/image"
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. "github.com/onsi/ginkgo"
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. "github.com/onsi/gomega"
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)
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var _ = SIGDescribe("[Feature:NodeAuthenticator]", func() {
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f := framework.NewDefaultFramework("node-authn")
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var ns string
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var nodeIPs []string
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BeforeEach(func() {
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ns = f.Namespace.Name
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nodeList, err := f.ClientSet.CoreV1().Nodes().List(metav1.ListOptions{})
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Expect(err).NotTo(HaveOccurred(), "failed to list nodes in namespace: %s", ns)
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Expect(len(nodeList.Items)).NotTo(BeZero())
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pickedNode := nodeList.Items[0]
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nodeIPs = framework.GetNodeAddresses(&pickedNode, v1.NodeExternalIP)
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// The pods running in the cluster can see the internal addresses.
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nodeIPs = append(nodeIPs, framework.GetNodeAddresses(&pickedNode, v1.NodeInternalIP)...)
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// make sure ServiceAccount admission controller is enabled, so secret generation on SA creation works
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saName := "default"
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sa, err := f.ClientSet.CoreV1().ServiceAccounts(ns).Get(saName, metav1.GetOptions{})
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Expect(err).NotTo(HaveOccurred(), "failed to retrieve service account (%s:%s)", ns, saName)
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Expect(len(sa.Secrets)).NotTo(BeZero())
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})
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It("The kubelet's main port 10250 should reject requests with no credentials", func() {
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pod := createNodeAuthTestPod(f)
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for _, nodeIP := range nodeIPs {
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// Anonymous authentication is disabled by default
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result := framework.RunHostCmdOrDie(ns, pod.Name, fmt.Sprintf("curl -sIk -o /dev/null -w '%s' https://%s:%v/metrics", "%{http_code}", nodeIP, ports.KubeletPort))
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Expect(result).To(Or(Equal("401"), Equal("403")), "the kubelet's main port 10250 should reject requests with no credentials")
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}
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})
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It("The kubelet can delegate ServiceAccount tokens to the API server", func() {
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By("create a new ServiceAccount for authentication")
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trueValue := true
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newSA := &v1.ServiceAccount{
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ObjectMeta: metav1.ObjectMeta{
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Namespace: ns,
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Name: "node-auth-newsa",
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},
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AutomountServiceAccountToken: &trueValue,
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}
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_, err := f.ClientSet.CoreV1().ServiceAccounts(ns).Create(newSA)
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Expect(err).NotTo(HaveOccurred(), "failed to create service account (%s:%s)", ns, newSA.Name)
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pod := createNodeAuthTestPod(f)
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for _, nodeIP := range nodeIPs {
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result := framework.RunHostCmdOrDie(ns,
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pod.Name,
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fmt.Sprintf("curl -sIk -o /dev/null -w '%s' --header \"Authorization: Bearer `%s`\" https://%s:%v/metrics",
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"%{http_code}",
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"cat /var/run/secrets/kubernetes.io/serviceaccount/token",
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nodeIP, ports.KubeletPort))
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Expect(result).To(Or(Equal("401"), Equal("403")), "the kubelet can delegate ServiceAccount tokens to the API server")
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}
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})
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})
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func createNodeAuthTestPod(f *framework.Framework) *v1.Pod {
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pod := &v1.Pod{
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ObjectMeta: metav1.ObjectMeta{
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GenerateName: "test-node-authn-",
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},
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Spec: v1.PodSpec{
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Containers: []v1.Container{{
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Name: "test-node-authn",
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Image: imageutils.GetE2EImage(imageutils.Hostexec),
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Command: []string{"sleep", "3600"},
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}},
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RestartPolicy: v1.RestartPolicyNever,
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},
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}
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return f.PodClient().CreateSync(pod)
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}
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