Merge pull request #44727 from x1957/master

Automatic merge from submit-queue

adds log when gpuManager.start() failed

If gpuManager.start() returns error, there is no log.

We confused with scheduler do not schedule any pod(with gpu) to one node.
kubectl describe node xxx shows there is no gpu on that node, because the gpu driver do not work on that node, gpuManager.start() failed, but we can not see anything in log.

pkg/kubelet/kubelet.go

@@ -1176,7 +1176,9 @@ func (kl *Kubelet) initializeModules() error {
 	}
 
 	// Step 7: Initialize GPUs
-	kl.gpuManager.Start()
+	if err := kl.gpuManager.Start(); err != nil {
+		glog.Errorf("Failed to start gpuManager %v", err)
+	}
 
 	// Step 8: Start resource analyzer
 	kl.resourceAnalyzer.Start()