diff --git a/cmd/integration/integration.go b/cmd/integration/integration.go
index 8e4908b7e83..dcd3610157b 100644
--- a/cmd/integration/integration.go
+++ b/cmd/integration/integration.go
@@ -73,7 +73,7 @@ func (fakeKubeletClient) GetPodStatus(host, podNamespace, podID string) (api.Pod
 			Client: http.DefaultClient,
 			Port:   10250,
 		}
-	case "machine":
+	case "127.0.0.1":
 		c = &client.HTTPKubeletClient{
 			Client: http.DefaultClient,
 			Port:   10251,
@@ -81,7 +81,18 @@ func (fakeKubeletClient) GetPodStatus(host, podNamespace, podID string) (api.Pod
 	default:
 		glog.Fatalf("Can't get info for: '%v', '%v - %v'", host, podNamespace, podID)
 	}
-	return c.GetPodStatus("localhost", podNamespace, podID)
+	r, err := c.GetPodStatus("localhost", podNamespace, podID)
+	if err != nil {
+		return r, err
+	}
+	r.Status.PodIP = "1.2.3.4"
+	m := make(api.PodInfo)
+	for k, v := range r.Status.Info {
+		v.PodIP = "1.2.3.4"
+		m[k] = v
+	}
+	r.Status.Info = m
+	return r, nil
 }
 
 func (fakeKubeletClient) HealthCheck(host string) (probe.Status, error) {
@@ -104,7 +115,7 @@ func startComponents(manifestURL string) (apiServerURL string) {
 	// Setup
 	servers := []string{"http://localhost:4001"}
 	glog.Infof("Creating etcd client pointing to %v", servers)
-	machineList := []string{"localhost", "machine"}
+	machineList := []string{"localhost", "127.0.0.1"}
 
 	handler := delegateHandler{}
 	apiServer := httptest.NewServer(&handler)
@@ -163,6 +174,7 @@ func startComponents(manifestURL string) (apiServerURL string) {
 		ReadWritePort:     portNumber,
 		ReadOnlyPort:      portNumber,
 		PublicAddress:     net.ParseIP(host),
+		CacheTimeout:      2 * time.Second,
 	})
 	handler.delegate = m.Handler
 
@@ -185,7 +197,7 @@ func startComponents(manifestURL string) (apiServerURL string) {
 
 	nodeResources := &api.NodeResources{}
 	nodeController := nodeControllerPkg.NewNodeController(nil, "", machineList, nodeResources, cl, fakeKubeletClient{})
-	nodeController.Run(10*time.Second, 10)
+	nodeController.Run(5*time.Second, 10)
 
 	// Kubelet (localhost)
 	testRootDir := makeTempDirOrDie("kubelet_integ_1.")
diff --git a/pkg/master/master.go b/pkg/master/master.go
index 872c29ac45c..62b67830b57 100644
--- a/pkg/master/master.go
+++ b/pkg/master/master.go
@@ -100,6 +100,10 @@ type Config struct {
 
 	// If nil, the first result from net.InterfaceAddrs will be used.
 	PublicAddress net.IP
+
+	// Control the interval that pod, node IP, and node heath status caches
+	// expire.
+	CacheTimeout time.Duration
 }
 
 // Master contains state for a Kubernetes cluster master/api server.
@@ -117,6 +121,7 @@ type Master struct {
 	storage               map[string]apiserver.RESTStorage
 	client                *client.Client
 	portalNet             *net.IPNet
+	cacheTimeout          time.Duration
 
 	mux                   apiserver.Mux
 	muxHelper             *apiserver.MuxHelper
@@ -179,6 +184,9 @@ func setDefaults(c *Config) {
 	if c.ReadOnlyPort == 0 {
 		c.ReadOnlyPort = 7080
 	}
+	if c.CacheTimeout == 0 {
+		c.CacheTimeout = 5 * time.Second
+	}
 	if c.ReadWritePort == 0 {
 		c.ReadWritePort = 443
 	}
@@ -283,7 +291,9 @@ func New(c *Config) *Master {
 		authorizer:            c.Authorizer,
 		admissionControl:      c.AdmissionControl,
 		v1beta3:               c.EnableV1Beta3,
-		nodeIPCache:           NewIPCache(c.Cloud, util.RealClock{}, 30*time.Second),
+		nodeIPCache:           NewIPCache(c.Cloud, util.RealClock{}, c.CacheTimeout),
+
+		cacheTimeout: c.CacheTimeout,
 
 		masterCount:         c.MasterCount,
 		publicIP:            c.PublicAddress,
@@ -365,7 +375,7 @@ func (m *Master) init(c *Config) {
 		RESTStorageToNodes(nodeRESTStorage).Nodes(),
 		m.podRegistry,
 	)
-	go util.Forever(func() { podCache.UpdateAllContainers() }, time.Second*5)
+	go util.Forever(func() { podCache.UpdateAllContainers() }, m.cacheTimeout)
 	go util.Forever(func() { podCache.GarbageCollectPodStatus() }, time.Minute*30)
 
 	// TODO: Factor out the core API registration