Improve error handling in status configmap

cluster-autoscaler/clusterstate/utils/status.go

@@ -93,6 +93,9 @@ func WriteStatusConfigMap(kubeClient kube_client.Interface, msg string, logRecor
 	configMap, getStatusError = maps.Get(StatusConfigMapName, metav1.GetOptions{})
 	if getStatusError == nil {
 		configMap.Data["status"] = statusMsg
+		if configMap.ObjectMeta.Annotations == nil {
+			configMap.ObjectMeta.Annotations = make(map[string]string)
+		}
 		configMap.ObjectMeta.Annotations[ConfigMapLastUpdatedKey] = fmt.Sprintf("%v", statusUpdateTime)
 		configMap, writeStatusError = maps.Update(configMap)
 	} else if kube_errors.IsNotFound(getStatusError) {
@@ -110,10 +113,10 @@ func WriteStatusConfigMap(kubeClient kube_client.Interface, msg string, logRecor
 		}
 		configMap, writeStatusError = maps.Create(configMap)
 	} else {
-		errMsg = "Failed to retrieve status configmap for update"
+		errMsg = fmt.Sprintf("Failed to retrieve status configmap for update: %v", getStatusError)
 	}
 	if writeStatusError != nil {
-		errMsg = "Failed to write status configmap"
+		errMsg = fmt.Sprintf("Failed to write status configmap: %v", writeStatusError)
 	}
 	if errMsg != "" {
 		glog.Error(errMsg)

cluster-autoscaler/clusterstate/utils/status_test.go

@@ -45,9 +45,8 @@ func setUpTest(t *testing.T) *testInfo {
 		client: &fake.Clientset{},
 		configMap: &apiv1.ConfigMap{
 			ObjectMeta: metav1.ObjectMeta{
-				Namespace:   StatusConfigMapNamespace,
-				Name:        StatusConfigMapName,
-				Annotations: map[string]string{},
+				Namespace: StatusConfigMapNamespace,
+				Name:      StatusConfigMapName,
 			},
 			Data: map[string]string{},
 		},
@@ -112,6 +111,7 @@ func TestWriteStatusConfigMapError(t *testing.T) {
 	ti.getError = errors.New("stuff bad")
 	result, err := WriteStatusConfigMap(ti.client, "TEST_MSG", nil)
 	assert.NotNil(t, err)
+	assert.Contains(t, err.Error(), "stuff bad")
 	assert.Nil(t, result)
 	assert.True(t, ti.getCalled)
 	assert.False(t, ti.updateCalled)