kubernetes · j3ffml · Feb 25, 2015 · Feb 24, 2015 · j3ffml · Feb 24, 2015
diff --git a/cluster/gce/util.sh b/cluster/gce/util.sh
@@ -803,6 +803,7 @@ function test-setup {
   detect-project
 
   # Open up port 80 & 8080 so common containers on minions can be reached
+  # TODO(roberthbailey): Remove this once we are no longer relying on hostPorts.
   gcloud compute firewall-rules create \
     --project "${PROJECT}" \
     --target-tags "${MINION_TAG}" \

diff --git a/examples/update-demo/README.md b/examples/update-demo/README.md
@@ -26,28 +26,20 @@ $ cd kubernetes
 $ hack/dev-build-and-up.sh
 ```
 
-If you are running your cluster on GCE (the default), you may need to open the firewall for port 8080 using the [console](https://console.developer.google.com) or the `gcloud` tool. The following command will allow traffic from any source to instances tagged `kubernetes-minion`:
-
-```bash
-$ gcloud compute firewall-rules create \
-  --allow tcp:8080 --target-tags=kubernetes-minion \
-  kubernetes-minion-8080
-```
-
 ### Step One: Turn up the UX for the demo
 
-You can use bash job control to run this in the background.  This can sometimes spew to the output so you could also run it in a different terminal.
+You can use bash job control to run this in the background (note that you must use the default port -- 8001 -- for the following demonstration to work properly).  This can sometimes spew to the output so you could also run it in a different terminal.
 
 ```
-$ ./cluster/kubectl.sh proxy --www=local/ &
-+ ./cluster/kubectl.sh proxy --www=local/
+$ ./cluster/kubectl.sh proxy --www=examples/update-demo/local/ &
++ ./cluster/kubectl.sh proxy --www=examples/update-demo/local/
 I0218 15:18:31.623279   67480 proxy.go:36] Starting to serve on localhost:8001
 ```
 
 Now visit the the [demo website](http://localhost:8001/static).  You won't see anything much quite yet.
 
 ### Step Two: Run the controller
-Now we will turn up two replicas of an image.  They all serve on port 8080, mapped to internal port 80
+Now we will turn up two replicas of an image.  They all serve on internal port 80.
 
 ```bash
 $ ./cluster/kubectl.sh create -f examples/update-demo/nautilus-rc.yaml

diff --git a/examples/update-demo/kitten-rc.yaml b/examples/update-demo/kitten-rc.yaml
@@ -12,8 +12,7 @@ desiredState:
         - name: update-demo
           image: kubernetes/update-demo:kitten
           ports:
-          - hostPort: 8080
-            containerPort: 80
+          - containerPort: 80
             protocol: TCP
     labels:
       name: update-demo

diff --git a/examples/update-demo/local/angular.min.js.map b/examples/update-demo/local/angular.min.js.map
diff --git a/examples/update-demo/local/index.html b/examples/update-demo/local/index.html
@@ -22,9 +22,9 @@
 </head>
 <body ng-controller="ButtonsCtrl">
   <div ng-repeat="server in servers" class="pod">
-    <img src="http://{{server.ip}}:8080/{{server.image}}" height="100px" width="100px" />
-    <b>ID:</b> {{server.id}}<br>
-    <b>Host:</b> <a href="http://{{server.ip}}:8080/data.json">{{server.host}}</a><br>
+    <img src="http://localhost:8001/api/v1beta1/proxy/pods/{{server.podId}}/{{server.image}}" height="100px" width="100px" />
+    <b>ID:</b> {{server.podId}}<br>
+    <b>Host:</b> <a href="http://localhost:8001/api/v1beta1/proxy/pods/{{server.podId}}/data.json">{{server.host}}</a><br>
     <b>Status:</b> {{server.status}}<br>
     <b>Image:</b> {{server.dockerImage}}<br>
     <b>Labels:</b>

diff --git a/examples/update-demo/local/script.js b/examples/update-demo/local/script.js
@@ -17,27 +17,25 @@ limitations under the License.
 var base = "http://localhost:8001/api/v1beta1/";
 
 var updateImage = function($http, server) {
-  $http.get("http://" + server.ip + ":8080/data.json")
+  $http.get(base + "proxy/pods/" + server.podId + "/data.json")
     .success(function(data) {
-      server.image = data.image;
       console.log(data);
+      server.image = data.image;
     })
     .error(function(data) {
-      server.image = "";
       console.log(data);
+      server.image = "";
     });
 };
 
 var updateServer = function($http, server) {
-  $http.get(base + "pods/" + server.id)
+  $http.get(base + "pods/" + server.podId)
     .success(function(data) {
       console.log(data);
-      server.ip = data.currentState.hostIP;
       server.labels = data.labels;
       server.host = data.currentState.host.split('.')[0];
       server.status = data.currentState.status;
-
-      server.dockerImage = data.currentState.info["update-demo"].Image;
+      server.dockerImage = data.currentState.info["update-demo"].image;
       updateImage($http, server);
     })
     .error(function(data) {
@@ -62,7 +60,7 @@ var ButtonsCtrl = function ($scope, $http, $interval) {
 var getServer = function($scope, id) {
   var servers = $scope.servers;
   for (var i = 0; i < servers.length; ++i) {
-    if (servers[i].id == id) {
+    if (servers[i].podId == id) {
       return servers[i];
     }
   }
@@ -89,7 +87,7 @@ var update = function($scope, $http) {
         }
         var server = getServer($scope, pod.id);
         if (server == null) {
-          server = { "id": pod.id };
+          server = { "podId": pod.id };
         }
         newServers.push(server);
       }

diff --git a/examples/update-demo/nautilus-rc.yaml b/examples/update-demo/nautilus-rc.yaml
@@ -13,8 +13,7 @@ desiredState:
         - name: update-demo
           image: kubernetes/update-demo:nautilus
           ports:
-          - hostPort: 8080
-            containerPort: 80
+          - containerPort: 80
             protocol: TCP
     labels:
         name: update-demo

diff --git a/hack/e2e-suite/update.sh b/hack/e2e-suite/update.sh
@@ -103,9 +103,7 @@ function validate() {
         continue
       fi
 
-
-      host_ip=$($KUBECTL get pods "$id" -o template --template='{{.currentState.hostIP}}')
-      curl -s --max-time 5 --fail http://${host_ip}:8080/data.json \
+      curl -s --max-time 5 --fail http://localhost:8011/api/v1beta1/proxy/pods/${id}/data.json \
           | grep -q ${container_image_version} || {
         echo "  ${id} is running the right image but curl to contents failed or returned wrong info"
         continue
@@ -124,10 +122,15 @@ function teardown() {
   echo "Cleaning up test artifacts"
   ${KUBECTL} stop rc update-demo-kitten || true
   ${KUBECTL} stop rc update-demo-nautilus || true
+  kill -TERM "${kubectl_proxy_pid:-}" &> /dev/null || true
 }
 
 trap "teardown" EXIT
 
+# Launch a local proxy to the apiserver
+${KUBECTL} proxy --port=8011 &
+kubectl_proxy_pid=$!
+
 # Launch a container
 ${KUBECTL} create -f "${KUBE_ROOT}/examples/update-demo/nautilus-rc.yaml"
 validate 2 nautilus

diff --git a/test/e2e/kubectl.go b/test/e2e/kubectl.go
@@ -35,13 +35,34 @@ const (
 	kittenImage         = "kubernetes/update-demo:kitten"
 	updateDemoSelector  = "name=update-demo"
 	updateDemoContainer = "update-demo"
+	kubectlProxyPort    = 8011
 )
 
 var _ = Describe("kubectl", func() {
 
-	updateDemoRoot := filepath.Join(root, "examples/update-demo")
-	nautilusPath := filepath.Join(updateDemoRoot, "nautilus-rc.yaml")
-	kittenPath := filepath.Join(updateDemoRoot, "kitten-rc.yaml")
+	// Constants.
+	var (
+		updateDemoRoot = filepath.Join(root, "examples/update-demo")
+		nautilusPath   = filepath.Join(updateDemoRoot, "nautilus-rc.yaml")
+		kittenPath     = filepath.Join(updateDemoRoot, "kitten-rc.yaml")
+	)
+
+	var cmd *exec.Cmd
+
+	BeforeEach(func() {
+		cmd = kubectlCmd("proxy", fmt.Sprintf("--port=%d", kubectlProxyPort))
+		if err := cmd.Start(); err != nil {
+			Failf("Unable to start kubectl proxy: %v", err)
+		}
+	})
+
+	AfterEach(func() {
+		// Kill the proxy
+		if cmd.Process != nil {
+			Logf("Stopping kubectl proxy (pid %d)", cmd.Process.Pid)
+			cmd.Process.Kill()
+		}
+	})
 
 	It("should create and stop a replication controller", func() {
 		defer cleanup(nautilusPath)
@@ -106,8 +127,6 @@ func validateController(image string, replicas int, timeout time.Duration) {
 
 	getImageTemplate := fmt.Sprintf(`--template={{(index .currentState.info "%s").image}}`, updateDemoContainer)
 
-	getHostIPTemplate := "--template={{.currentState.hostIP}}"
-
 	By(fmt.Sprintf("waiting for all containers in %s pods to come up.", updateDemoSelector))
 	for start := time.Now(); time.Since(start) < timeout; time.Sleep(5 * time.Second) {
 		getPodsOutput := runKubectl("get", "pods", "-o", "template", getPodsTemplate, "-l", updateDemoSelector)
@@ -117,32 +136,31 @@ func validateController(image string, replicas int, timeout time.Duration) {
 			continue
 		}
 		var runningPods []string
-		for _, podId := range pods {
-			running := runKubectl("get", "pods", podId, "-o", "template", getContainerStateTemplate)
+		for _, podID := range pods {
+			running := runKubectl("get", "pods", podID, "-o", "template", getContainerStateTemplate)
 			if running == "false" {
-				By(fmt.Sprintf("%s is created but not running", podId))
+				Logf("%s is created but not running", podID)
 				continue
 			}
 
-			currentImage := runKubectl("get", "pods", podId, "-o", "template", getImageTemplate)
+			currentImage := runKubectl("get", "pods", podID, "-o", "template", getImageTemplate)
 			if currentImage != image {
-				By(fmt.Sprintf("%s is created but running wrong image; expected: %s, actual: %s", podId, image, currentImage))
+				Logf("%s is created but running wrong image; expected: %s, actual: %s", podID, image, currentImage)
 				continue
 			}
 
-			hostIP := runKubectl("get", "pods", podId, "-o", "template", getHostIPTemplate)
-			data, err := getData(hostIP)
+			data, err := getData(podID)
 			if err != nil {
-				By(fmt.Sprintf("%s is running right image but fetching data failed: %v", podId, err))
+				Logf("%s is running right image but fetching data failed: %v", podID, err)
 				continue
 			}
 			if strings.Contains(data.image, image) {
-				By(fmt.Sprintf("%s is running right image but fetched data has the wrong info: %s", podId, data))
+				Logf("%s is running right image but fetched data has the wrong info: %s", podID, data)
 				continue
 			}
 
-			Logf("%s is verified up and running", podId)
-			runningPods = append(runningPods, podId)
+			Logf("%s is verified up and running", podID)
+			runningPods = append(runningPods, podID)
 		}
 		if len(runningPods) == replicas {
 			return
@@ -155,9 +173,8 @@ type updateDemoData struct {
 	image string `json:"image"`
 }
 
-func getData(hostIP string) (*updateDemoData, error) {
-	addr := fmt.Sprintf("http://%s:8080/data.json", hostIP)
-	resp, err := http.Get(fmt.Sprintf(addr))
+func getData(podID string) (*updateDemoData, error) {
+	resp, err := http.Get(fmt.Sprintf("http://localhost:%d/api/v1beta1/proxy/pods/%s/data.json", kubectlProxyPort, podID))
 	if err != nil || resp.StatusCode != 200 {
 		return nil, err
 	}
@@ -172,16 +189,17 @@ func getData(hostIP string) (*updateDemoData, error) {
 	return &data, err
 }
 
-func runKubectl(args ...string) string {
+func kubectlCmd(args ...string) *exec.Cmd {
 	// TODO: use kubectl binary directly instead of shell wrapper
 	path := filepath.Join(root, "cluster/kubectl.sh")
-	cmdStr := path + " " + strings.Join(args, " ")
-	Logf("Running '%v'", cmdStr)
+	Logf("Running '%v'", path+" "+strings.Join(args, " "))
+	return exec.Command(path, args...)
+}
 
-	cmd := exec.Command(path, args...)
+func runKubectl(args ...string) string {
 	var stdout, stderr bytes.Buffer
-	cmd.Stdout = &stdout
-	cmd.Stderr = &stderr
+	cmd := kubectlCmd(args...)
+	cmd.Stdout, cmd.Stderr = &stdout, &stderr
 
 	if err := cmd.Run(); err != nil {
 		Failf("Error running %v:\nCommand stdout:\n%v\nstderr:\n%v\n", cmd, cmd.Stdout, cmd.Stderr)