Add two more kubeadm preflight ignores to make e2e tests pass.

pkg/minikube/constants/constants.go

@@ -160,7 +160,8 @@ var Preflights = []string{
 	// We use --ignore-preflight-errors=DirAvailable since we have our own custom addons
 	// that we also stick in /etc/kubernetes/manifests
 	"DirAvailable--etc-kubernetes-manifests",
-	"DirAvailable--data",
+	"DirAvailable--data-minikube",
+	"Port-10250",
 	"FileAvailable--etc-kubernetes-manifests-kube-scheduler.yaml",
 	"FileAvailable--etc-kubernetes-manifests-kube-apiserver.yaml",
 	"FileAvailable--etc-kubernetes-manifests-kube-controller-manager.yaml",

test/integration/addons_test.go

@@ -48,15 +48,21 @@ func testDashboard(t *testing.T) {
 	t.Parallel()
 	minikubeRunner := NewMinikubeRunner(t)
 
-	if err := util.WaitForDashboardRunning(t); err != nil {
-		t.Fatalf("waiting for dashboard to be up: %s", err)
+	var u url.URL
+
+	checkDashboard := func(t *testing.T) error {
+		dashboardURL = minikubeRunner.RunCommand("dashboard --url", false)
+		u, err := url.Parse(strings.TrimSpace(dashboardURL))
+		if err != nil {
+			return err
+		}
+		return nil
 	}
 
-	dashboardURL := minikubeRunner.RunCommand("dashboard --url", true)
-	u, err := url.Parse(strings.TrimSpace(dashboardURL))
-	if err != nil {
-		t.Fatalf("failed to parse dashboard URL %s: %v", dashboardURL, err)
+	if err := util.Retry(t, checkDashboard, 2*time.Second, 10); err != nil {
+		t.Fatalf("error checking dashboard URL: %s", err)
 	}
+
 	if u.Scheme != "http" {
 		t.Fatalf("wrong scheme in dashboard URL, expected http, actual %s", u.Scheme)
 	}