Remove check for SubResourcePodProxyVersion and SubResourceServiceAndNodeProxyVersion

test/e2e/framework/kubelet_stats.go

@@ -280,33 +280,17 @@ func HighLatencyKubeletOperations(c clientset.Interface, threshold time.Duration
 
 // getStatsSummary contacts kubelet for the container information.
 func getStatsSummary(c clientset.Interface, nodeName string) (*stats.Summary, error) {
-	subResourceProxyAvailable, err := ServerVersionGTE(SubResourceServiceAndNodeProxyVersion, c.Discovery())
-	if err != nil {
-		return nil, err
-	}
-
 	ctx, cancel := context.WithTimeout(context.Background(), SingleCallTimeout)
 	defer cancel()
 
-	var data []byte
-	if subResourceProxyAvailable {
-		data, err = c.CoreV1().RESTClient().Get().
-			Context(ctx).
-			Resource("nodes").
-			SubResource("proxy").
-			Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
-			Suffix("stats/summary").
-			Do().Raw()
-
-	} else {
-		data, err = c.CoreV1().RESTClient().Get().
-			Context(ctx).
-			Prefix("proxy").
-			Resource("nodes").
-			Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
-			Suffix("stats/summary").
-			Do().Raw()
-	}
+	data, err := c.CoreV1().RESTClient().Get().
+		Context(ctx).
+		Resource("nodes").
+		SubResource("proxy").
+		Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
+		Suffix("stats/summary").
+		Do().Raw()
+
 	if err != nil {
 		return nil, err
 	}
@@ -406,30 +390,14 @@ func getOneTimeResourceUsageOnNode(
 }
 
 func getNodeStatsSummary(c clientset.Interface, nodeName string) (*stats.Summary, error) {
-	subResourceProxyAvailable, err := ServerVersionGTE(SubResourceServiceAndNodeProxyVersion, c.Discovery())
-	if err != nil {
-		return nil, err
-	}
+	data, err := c.CoreV1().RESTClient().Get().
+		Resource("nodes").
+		SubResource("proxy").
+		Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
+		Suffix("stats/summary").
+		SetHeader("Content-Type", "application/json").
+		Do().Raw()
 
-	var data []byte
-	if subResourceProxyAvailable {
-		data, err = c.CoreV1().RESTClient().Get().
-			Resource("nodes").
-			SubResource("proxy").
-			Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
-			Suffix("stats/summary").
-			SetHeader("Content-Type", "application/json").
-			Do().Raw()
-
-	} else {
-		data, err = c.CoreV1().RESTClient().Get().
-			Prefix("proxy").
-			Resource("nodes").
-			Name(fmt.Sprintf("%v:%v", nodeName, ports.KubeletPort)).
-			Suffix("stats/summary").
-			SetHeader("Content-Type", "application/json").
-			Do().Raw()
-	}
 	if err != nil {
 		return nil, err
 	}

test/e2e/framework/metrics_util.go

@@ -443,11 +443,6 @@ func getSchedulingLatency(c clientset.Interface) (*SchedulingLatency, error) {
 	nodes, err := c.CoreV1().Nodes().List(metav1.ListOptions{})
 	ExpectNoError(err)
 
-	subResourceProxyAvailable, err := ServerVersionGTE(SubResourcePodProxyVersion, c.Discovery())
-	if err != nil {
-		return nil, err
-	}
-
 	var data string
 	var masterRegistered = false
 	for _, node := range nodes.Items {
@@ -460,25 +455,14 @@ func getSchedulingLatency(c clientset.Interface) (*SchedulingLatency, error) {
 		defer cancel()
 
 		var rawData []byte
-		if subResourceProxyAvailable {
-			rawData, err = c.CoreV1().RESTClient().Get().
-				Context(ctx).
-				Namespace(metav1.NamespaceSystem).
-				Resource("pods").
-				Name(fmt.Sprintf("kube-scheduler-%v:%v", TestContext.CloudConfig.MasterName, ports.SchedulerPort)).
-				SubResource("proxy").
-				Suffix("metrics").
-				Do().Raw()
-		} else {
-			rawData, err = c.CoreV1().RESTClient().Get().
-				Context(ctx).
-				Prefix("proxy").
-				Namespace(metav1.NamespaceSystem).
-				SubResource("pods").
-				Name(fmt.Sprintf("kube-scheduler-%v:%v", TestContext.CloudConfig.MasterName, ports.SchedulerPort)).
-				Suffix("metrics").
-				Do().Raw()
-		}
+		rawData, err = c.CoreV1().RESTClient().Get().
+			Context(ctx).
+			Namespace(metav1.NamespaceSystem).
+			Resource("pods").
+			Name(fmt.Sprintf("kube-scheduler-%v:%v", TestContext.CloudConfig.MasterName, ports.SchedulerPort)).
+			SubResource("proxy").
+			Suffix("metrics").
+			Do().Raw()
 
 		ExpectNoError(err)
 		data = string(rawData)

test/e2e/framework/util.go

@@ -244,24 +244,8 @@ func GetPauseImageNameForHostArch() string {
 	return currentPodInfraContainerImageName + "-" + goruntime.GOARCH + ":" + currentPodInfraContainerImageVersion
 }
 
-// SubResource proxy should have been functional in v1.0.0, but SubResource
-// proxy via tunneling is known to be broken in v1.0.  See
-// https://github.com/kubernetes/kubernetes/pull/15224#issuecomment-146769463
-//
-// TODO(ihmccreery): remove once we don't care about v1.0 anymore, (tentatively
-// in v1.3).
-var SubResourcePodProxyVersion = utilversion.MustParseSemantic("v1.1.0")
-var SubResourceServiceAndNodeProxyVersion = utilversion.MustParseSemantic("v1.2.0")
-
 func GetServicesProxyRequest(c clientset.Interface, request *restclient.Request) (*restclient.Request, error) {
-	subResourceProxyAvailable, err := ServerVersionGTE(SubResourceServiceAndNodeProxyVersion, c.Discovery())
-	if err != nil {
-		return nil, err
-	}
-	if subResourceProxyAvailable {
-		return request.Resource("services").SubResource("proxy"), nil
-	}
-	return request.Prefix("proxy").Resource("services"), nil
+	return request.Resource("services").SubResource("proxy"), nil
 }
 
 // unique identifier of the e2e run
@@ -1672,34 +1656,19 @@ func (r podProxyResponseChecker) CheckAllResponses() (done bool, err error) {
 		if !isElementOf(pod.UID, currentPods) {
 			return false, fmt.Errorf("pod with UID %s is no longer a member of the replica set.  Must have been restarted for some reason.  Current replica set: %v", pod.UID, currentPods)
 		}
-		subResourceProxyAvailable, err := ServerVersionGTE(SubResourcePodProxyVersion, r.c.Discovery())
-		if err != nil {
-			return false, err
-		}
 
 		ctx, cancel := context.WithTimeout(context.Background(), SingleCallTimeout)
 		defer cancel()
 
-		var body []byte
-		if subResourceProxyAvailable {
-			body, err = r.c.CoreV1().RESTClient().Get().
-				Context(ctx).
-				Namespace(r.ns).
-				Resource("pods").
-				SubResource("proxy").
-				Name(string(pod.Name)).
-				Do().
-				Raw()
-		} else {
-			body, err = r.c.CoreV1().RESTClient().Get().
-				Context(ctx).
-				Prefix("proxy").
-				Namespace(r.ns).
-				Resource("pods").
-				Name(string(pod.Name)).
-				Do().
-				Raw()
-		}
+		body, err := r.c.CoreV1().RESTClient().Get().
+			Context(ctx).
+			Namespace(r.ns).
+			Resource("pods").
+			SubResource("proxy").
+			Name(string(pod.Name)).
+			Do().
+			Raw()
+
 		if err != nil {
 			if ctx.Err() != nil {
 				// We may encounter errors here because of a race between the pod readiness and apiserver
@@ -4404,29 +4373,16 @@ const proxyTimeout = 2 * time.Minute
 func NodeProxyRequest(c clientset.Interface, node, endpoint string) (restclient.Result, error) {
 	// proxy tends to hang in some cases when Node is not ready. Add an artificial timeout for this call.
 	// This will leak a goroutine if proxy hangs. #22165
-	subResourceProxyAvailable, err := ServerVersionGTE(SubResourceServiceAndNodeProxyVersion, c.Discovery())
-	if err != nil {
-		return restclient.Result{}, err
-	}
 	var result restclient.Result
 	finished := make(chan struct{})
 	go func() {
-		if subResourceProxyAvailable {
-			result = c.CoreV1().RESTClient().Get().
-				Resource("nodes").
-				SubResource("proxy").
-				Name(fmt.Sprintf("%v:%v", node, ports.KubeletPort)).
-				Suffix(endpoint).
-				Do()
+		result = c.CoreV1().RESTClient().Get().
+			Resource("nodes").
+			SubResource("proxy").
+			Name(fmt.Sprintf("%v:%v", node, ports.KubeletPort)).
+			Suffix(endpoint).
+			Do()
 
-		} else {
-			result = c.CoreV1().RESTClient().Get().
-				Prefix("proxy").
-				Resource("nodes").
-				Name(fmt.Sprintf("%v:%v", node, ports.KubeletPort)).
-				Suffix(endpoint).
-				Do()
-		}
 		finished <- struct{}{}
 	}()
 	select {

test/e2e/instrumentation/monitoring/influxdb.go

@@ -66,42 +66,21 @@ var (
 
 // Query sends a command to the server and returns the Response
 func Query(c clientset.Interface, query string) (*influxdb.Response, error) {
-	subResourceProxyAvailable, err := framework.ServerVersionGTE(framework.SubResourceServiceAndNodeProxyVersion, c.Discovery())
-	if err != nil {
-		return nil, err
-	}
-
 	ctx, cancel := context.WithTimeout(context.Background(), framework.SingleCallTimeout)
 	defer cancel()
 
-	var result []byte
-	if subResourceProxyAvailable {
-		result, err = c.CoreV1().RESTClient().Get().
-			Context(ctx).
-			Namespace("kube-system").
-			Resource("services").
-			Name(influxdbService+":api").
-			SubResource("proxy").
-			Suffix("query").
-			Param("q", query).
-			Param("db", influxdbDatabaseName).
-			Param("epoch", "s").
-			Do().
-			Raw()
-	} else {
-		result, err = c.CoreV1().RESTClient().Get().
-			Context(ctx).
-			Prefix("proxy").
-			Namespace("kube-system").
-			Resource("services").
-			Name(influxdbService+":api").
-			Suffix("query").
-			Param("q", query).
-			Param("db", influxdbDatabaseName).
-			Param("epoch", "s").
-			Do().
-			Raw()
-	}
+	result, err := c.CoreV1().RESTClient().Get().
+		Context(ctx).
+		Namespace("kube-system").
+		Resource("services").
+		Name(influxdbService+":api").
+		SubResource("proxy").
+		Suffix("query").
+		Param("q", query).
+		Param("db", influxdbDatabaseName).
+		Param("epoch", "s").
+		Do().
+		Raw()
 
 	if err != nil {
 		if ctx.Err() != nil {

test/e2e/kubectl/kubectl.go

@@ -1990,34 +1990,19 @@ func getUDData(jpgExpected string, ns string) func(clientset.Interface, string)
 	// getUDData validates data.json in the update-demo (returns nil if data is ok).
 	return func(c clientset.Interface, podID string) error {
 		framework.Logf("validating pod %s", podID)
-		subResourceProxyAvailable, err := framework.ServerVersionGTE(framework.SubResourcePodProxyVersion, c.Discovery())
-		if err != nil {
-			return err
-		}
 
 		ctx, cancel := context.WithTimeout(context.Background(), framework.SingleCallTimeout)
 		defer cancel()
 
-		var body []byte
-		if subResourceProxyAvailable {
-			body, err = c.CoreV1().RESTClient().Get().
-				Namespace(ns).
-				Resource("pods").
-				SubResource("proxy").
-				Name(podID).
-				Suffix("data.json").
-				Do().
-				Raw()
-		} else {
-			body, err = c.CoreV1().RESTClient().Get().
-				Prefix("proxy").
-				Namespace(ns).
-				Resource("pods").
-				Name(podID).
-				Suffix("data.json").
-				Do().
-				Raw()
-		}
+		body, err := c.CoreV1().RESTClient().Get().
+			Namespace(ns).
+			Resource("pods").
+			SubResource("proxy").
+			Name(podID).
+			Suffix("data.json").
+			Do().
+			Raw()
+
 		if err != nil {
 			if ctx.Err() != nil {
 				framework.Failf("Failed to retrieve data from container: %v", err)

test/e2e/network/dns.go

@@ -169,35 +169,20 @@ func assertFilesContain(fileNames []string, fileDir string, pod *v1.Pod, client
 
 	framework.ExpectNoError(wait.Poll(time.Second*10, time.Second*600, func() (bool, error) {
 		failed = []string{}
-		subResourceProxyAvailable, err := framework.ServerVersionGTE(framework.SubResourcePodProxyVersion, client.Discovery())
-		if err != nil {
-			return false, err
-		}
 
 		ctx, cancel := context.WithTimeout(context.Background(), framework.SingleCallTimeout)
 		defer cancel()
 
-		var contents []byte
 		for _, fileName := range fileNames {
-			if subResourceProxyAvailable {
-				contents, err = client.CoreV1().RESTClient().Get().
-					Context(ctx).
-					Namespace(pod.Namespace).
-					Resource("pods").
-					SubResource("proxy").
-					Name(pod.Name).
-					Suffix(fileDir, fileName).
-					Do().Raw()
-			} else {
-				contents, err = client.CoreV1().RESTClient().Get().
-					Context(ctx).
-					Prefix("proxy").
-					Resource("pods").
-					Namespace(pod.Namespace).
-					Name(pod.Name).
-					Suffix(fileDir, fileName).
-					Do().Raw()
-			}
+			contents, err := client.CoreV1().RESTClient().Get().
+				Context(ctx).
+				Namespace(pod.Namespace).
+				Resource("pods").
+				SubResource("proxy").
+				Name(pod.Name).
+				Suffix(fileDir, fileName).
+				Do().Raw()
+
 			if err != nil {
 				if ctx.Err() != nil {
 					framework.Failf("Unable to read %s from pod %s: %v", fileName, pod.Name, err)

test/e2e/pre_stop.go

@@ -121,34 +121,20 @@ func testPreStop(c clientset.Interface, ns string) {
 
 	// Validate that the server received the web poke.
 	err = wait.Poll(time.Second*5, time.Second*60, func() (bool, error) {
-		subResourceProxyAvailable, err := framework.ServerVersionGTE(framework.SubResourcePodProxyVersion, c.Discovery())
-		if err != nil {
-			return false, err
-		}
 
 		ctx, cancel := context.WithTimeout(context.Background(), framework.SingleCallTimeout)
 		defer cancel()
 
 		var body []byte
-		if subResourceProxyAvailable {
-			body, err = c.CoreV1().RESTClient().Get().
-				Context(ctx).
-				Namespace(ns).
-				Resource("pods").
-				SubResource("proxy").
-				Name(podDescr.Name).
-				Suffix("read").
-				DoRaw()
-		} else {
-			body, err = c.CoreV1().RESTClient().Get().
-				Context(ctx).
-				Prefix("proxy").
-				Namespace(ns).
-				Resource("pods").
-				Name(podDescr.Name).
-				Suffix("read").
-				DoRaw()
-		}
+		body, err = c.CoreV1().RESTClient().Get().
+			Context(ctx).
+			Namespace(ns).
+			Resource("pods").
+			SubResource("proxy").
+			Name(podDescr.Name).
+			Suffix("read").
+			DoRaw()
+
 		if err != nil {
 			if ctx.Err() != nil {
 				framework.Failf("Error validating prestop: %v", err)