kube_proxy_migration.go 7.5 KB

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  1. /*
  2. Copyright 2017 The Kubernetes Authors.
  3. Licensed under the Apache License, Version 2.0 (the "License");
  4. you may not use this file except in compliance with the License.
  5. You may obtain a copy of the License at
  6. http://www.apache.org/licenses/LICENSE-2.0
  7. Unless required by applicable law or agreed to in writing, software
  8. distributed under the License is distributed on an "AS IS" BASIS,
  9. WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  10. See the License for the specific language governing permissions and
  11. limitations under the License.
  12. */
  13. package upgrades
  14. import (
  15. "fmt"
  16. "time"
  17. apps "k8s.io/api/apps/v1"
  18. v1 "k8s.io/api/core/v1"
  19. metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
  20. "k8s.io/apimachinery/pkg/labels"
  21. "k8s.io/apimachinery/pkg/util/wait"
  22. clientset "k8s.io/client-go/kubernetes"
  23. "k8s.io/kubernetes/test/e2e/framework"
  24. e2elog "k8s.io/kubernetes/test/e2e/framework/log"
  25. "github.com/onsi/ginkgo"
  26. )
  27. const (
  28. defaultTestTimeout = time.Duration(5 * time.Minute)
  29. clusterAddonLabelKey = "k8s-app"
  30. clusterComponentKey = "component"
  31. kubeProxyLabelName = "kube-proxy"
  32. )
  33. // KubeProxyUpgradeTest tests kube-proxy static pods -> DaemonSet upgrade path.
  34. type KubeProxyUpgradeTest struct {
  35. }
  36. // Name returns the tracking name of the test.
  37. func (KubeProxyUpgradeTest) Name() string { return "[sig-network] kube-proxy-upgrade" }
  38. // Setup verifies kube-proxy static pods is running before upgrade.
  39. func (t *KubeProxyUpgradeTest) Setup(f *framework.Framework) {
  40. ginkgo.By("Waiting for kube-proxy static pods running and ready")
  41. err := waitForKubeProxyStaticPodsRunning(f.ClientSet)
  42. framework.ExpectNoError(err)
  43. }
  44. // Test validates if kube-proxy is migrated from static pods to DaemonSet.
  45. func (t *KubeProxyUpgradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade UpgradeType) {
  46. c := f.ClientSet
  47. // Block until upgrade is done.
  48. ginkgo.By("Waiting for upgrade to finish")
  49. <-done
  50. ginkgo.By("Waiting for kube-proxy static pods disappear")
  51. err := waitForKubeProxyStaticPodsDisappear(c)
  52. framework.ExpectNoError(err)
  53. ginkgo.By("Waiting for kube-proxy DaemonSet running and ready")
  54. err = waitForKubeProxyDaemonSetRunning(c)
  55. framework.ExpectNoError(err)
  56. }
  57. // Teardown does nothing.
  58. func (t *KubeProxyUpgradeTest) Teardown(f *framework.Framework) {
  59. }
  60. // KubeProxyDowngradeTest tests kube-proxy DaemonSet -> static pods downgrade path.
  61. type KubeProxyDowngradeTest struct {
  62. }
  63. // Name returns the tracking name of the test.
  64. func (KubeProxyDowngradeTest) Name() string { return "[sig-network] kube-proxy-downgrade" }
  65. // Setup verifies kube-proxy DaemonSet is running before upgrade.
  66. func (t *KubeProxyDowngradeTest) Setup(f *framework.Framework) {
  67. ginkgo.By("Waiting for kube-proxy DaemonSet running and ready")
  68. err := waitForKubeProxyDaemonSetRunning(f.ClientSet)
  69. framework.ExpectNoError(err)
  70. }
  71. // Test validates if kube-proxy is migrated from DaemonSet to static pods.
  72. func (t *KubeProxyDowngradeTest) Test(f *framework.Framework, done <-chan struct{}, upgrade UpgradeType) {
  73. c := f.ClientSet
  74. // Block until upgrade is done.
  75. ginkgo.By("Waiting for upgrade to finish")
  76. <-done
  77. ginkgo.By("Waiting for kube-proxy DaemonSet disappear")
  78. err := waitForKubeProxyDaemonSetDisappear(c)
  79. framework.ExpectNoError(err)
  80. ginkgo.By("Waiting for kube-proxy static pods running and ready")
  81. err = waitForKubeProxyStaticPodsRunning(c)
  82. framework.ExpectNoError(err)
  83. }
  84. // Teardown does nothing.
  85. func (t *KubeProxyDowngradeTest) Teardown(f *framework.Framework) {
  86. }
  87. func waitForKubeProxyStaticPodsRunning(c clientset.Interface) error {
  88. e2elog.Logf("Waiting up to %v for kube-proxy static pods running", defaultTestTimeout)
  89. condition := func() (bool, error) {
  90. pods, err := getKubeProxyStaticPods(c)
  91. if err != nil {
  92. e2elog.Logf("Failed to get kube-proxy static pods: %v", err)
  93. return false, nil
  94. }
  95. numberSchedulableNodes := len(framework.GetReadySchedulableNodesOrDie(c).Items)
  96. numberkubeProxyPods := 0
  97. for _, pod := range pods.Items {
  98. if pod.Status.Phase == v1.PodRunning {
  99. numberkubeProxyPods = numberkubeProxyPods + 1
  100. }
  101. }
  102. if numberkubeProxyPods != numberSchedulableNodes {
  103. e2elog.Logf("Expect %v kube-proxy static pods running, got %v running, %v in total", numberSchedulableNodes, numberkubeProxyPods, len(pods.Items))
  104. return false, nil
  105. }
  106. return true, nil
  107. }
  108. if err := wait.PollImmediate(5*time.Second, defaultTestTimeout, condition); err != nil {
  109. return fmt.Errorf("error waiting for kube-proxy static pods running: %v", err)
  110. }
  111. return nil
  112. }
  113. func waitForKubeProxyStaticPodsDisappear(c clientset.Interface) error {
  114. e2elog.Logf("Waiting up to %v for kube-proxy static pods disappear", defaultTestTimeout)
  115. condition := func() (bool, error) {
  116. pods, err := getKubeProxyStaticPods(c)
  117. if err != nil {
  118. e2elog.Logf("Failed to get kube-proxy static pods: %v", err)
  119. return false, nil
  120. }
  121. if len(pods.Items) != 0 {
  122. e2elog.Logf("Expect kube-proxy static pods to disappear, got %v pods", len(pods.Items))
  123. return false, nil
  124. }
  125. return true, nil
  126. }
  127. if err := wait.PollImmediate(5*time.Second, defaultTestTimeout, condition); err != nil {
  128. return fmt.Errorf("error waiting for kube-proxy static pods disappear: %v", err)
  129. }
  130. return nil
  131. }
  132. func waitForKubeProxyDaemonSetRunning(c clientset.Interface) error {
  133. e2elog.Logf("Waiting up to %v for kube-proxy DaemonSet running", defaultTestTimeout)
  134. condition := func() (bool, error) {
  135. daemonSets, err := getKubeProxyDaemonSet(c)
  136. if err != nil {
  137. e2elog.Logf("Failed to get kube-proxy DaemonSet: %v", err)
  138. return false, nil
  139. }
  140. if len(daemonSets.Items) != 1 {
  141. e2elog.Logf("Expect only one kube-proxy DaemonSet, got %v", len(daemonSets.Items))
  142. return false, nil
  143. }
  144. numberSchedulableNodes := len(framework.GetReadySchedulableNodesOrDie(c).Items)
  145. numberkubeProxyPods := int(daemonSets.Items[0].Status.NumberAvailable)
  146. if numberkubeProxyPods != numberSchedulableNodes {
  147. e2elog.Logf("Expect %v kube-proxy DaemonSet pods running, got %v", numberSchedulableNodes, numberkubeProxyPods)
  148. return false, nil
  149. }
  150. return true, nil
  151. }
  152. if err := wait.PollImmediate(5*time.Second, defaultTestTimeout, condition); err != nil {
  153. return fmt.Errorf("error waiting for kube-proxy DaemonSet running: %v", err)
  154. }
  155. return nil
  156. }
  157. func waitForKubeProxyDaemonSetDisappear(c clientset.Interface) error {
  158. e2elog.Logf("Waiting up to %v for kube-proxy DaemonSet disappear", defaultTestTimeout)
  159. condition := func() (bool, error) {
  160. daemonSets, err := getKubeProxyDaemonSet(c)
  161. if err != nil {
  162. e2elog.Logf("Failed to get kube-proxy DaemonSet: %v", err)
  163. return false, nil
  164. }
  165. if len(daemonSets.Items) != 0 {
  166. e2elog.Logf("Expect kube-proxy DaemonSet to disappear, got %v DaemonSet", len(daemonSets.Items))
  167. return false, nil
  168. }
  169. return true, nil
  170. }
  171. if err := wait.PollImmediate(5*time.Second, defaultTestTimeout, condition); err != nil {
  172. return fmt.Errorf("error waiting for kube-proxy DaemonSet disappear: %v", err)
  173. }
  174. return nil
  175. }
  176. func getKubeProxyStaticPods(c clientset.Interface) (*v1.PodList, error) {
  177. label := labels.SelectorFromSet(labels.Set(map[string]string{clusterComponentKey: kubeProxyLabelName}))
  178. listOpts := metav1.ListOptions{LabelSelector: label.String()}
  179. return c.CoreV1().Pods(metav1.NamespaceSystem).List(listOpts)
  180. }
  181. func getKubeProxyDaemonSet(c clientset.Interface) (*apps.DaemonSetList, error) {
  182. label := labels.SelectorFromSet(labels.Set(map[string]string{clusterAddonLabelKey: kubeProxyLabelName}))
  183. listOpts := metav1.ListOptions{LabelSelector: label.String()}
  184. return c.AppsV1().DaemonSets(metav1.NamespaceSystem).List(listOpts)
  185. }