Skip ILB e2e test on GCP if cluster size exceeds limit

test/e2e/framework/service_util.go

@@ -89,6 +89,10 @@ const (
 
 	// ServiceTestTimeout is used for most polling/waiting activities
 	ServiceTestTimeout = 60 * time.Second
+
+	// GCPMaxInstancesInInstanceGroup is the maximum number of instances supported in
+	// one instance group on GCP.
+	GCPMaxInstancesInInstanceGroup = 2000
 )
 
 // This should match whatever the default/configured range is

test/e2e/network/service.go

@@ -1339,8 +1339,15 @@ var _ = SIGDescribe("Services", func() {
 
 	It("should be able to create an internal type load balancer [Slow]", func() {
 		framework.SkipUnlessProviderIs("azure", "gke", "gce")
+		if framework.ProviderIs("gke", "gce") {
+			framework.SkipUnlessNodeCountIsAtMost(framework.GCPMaxInstancesInInstanceGroup)
+		}
 
 		createTimeout := framework.LoadBalancerCreateTimeoutDefault
+		if nodes := framework.GetReadySchedulableNodesOrDie(cs); len(nodes.Items) > framework.LargeClusterMinNodesNumber {
+			createTimeout = framework.LoadBalancerCreateTimeoutLarge
+		}
+
 		pollInterval := framework.Poll * 10
 
 		namespace := f.Namespace.Name