Merge pull request #32420 from ixdy/e2e-teardown-on-up

Automatic merge from submit-queue

e2e: only tear down existing cluster if it exists

Jenkins won't actually test this change, since `e2e.go` is now sourced from `kubekins-e2e`. :(

Probably fixes https://github.com/kubernetes/test-infra/issues/539, once a new `kubekins-e2e` is pushed.

cc @maisem @davidopp

hack/e2e.go

@@ -94,7 +94,9 @@ func main() {
 		}
 	}
 
-	if *up {
+	// TODO: remove the IsUp() check after we stop testing 1.2 and earlier
+	// (or if we figure out a better way to handle TearDown failing on nonexisting clusters on old releases).
+	if *up && IsUp() {
 		if err := TearDown(); err != nil {
 			log.Fatalf("error tearing down previous cluster: %v", err)
 		}