Enable UI service flag for disabling UI service

charts/spark-operator-chart/README.md

@@ -87,7 +87,8 @@ All charts linted successfully
 | image.repository | string | `"gcr.io/spark-operator/spark-operator"` | Image repository |
 | image.tag | string | `""` | Overrides the image tag whose default is the chart appVersion. |
 | imagePullSecrets | list | `[]` | Image pull secrets |
-| ingressUrlFormat | string | `""` | Ingress URL format |
+| uiService.enable | bool | `""` | Enable UI service creation for Spark application |
+| ingressUrlFormat | string | `""` | Ingress URL format. Requires the UI service to be enabled by setting `uiService.enable` to true. |
 | istio.enabled | bool | `false` | When using `istio`, spark jobs need to run without a sidecar to properly terminate |
 | labelSelectorFilter | string | `""` | A comma-separated list of key=value, or key labels to filter resources during watch and list based on the specified labels. |
 | leaderElection.lockName | string | `"spark-operator-lock"` | Leader election lock name. Ref: https://github.com/GoogleCloudPlatform/spark-on-k8s-operator/blob/master/docs/user-guide.md#enabling-leader-election-for-high-availability. |

charts/spark-operator-chart/templates/deployment.yaml

@@ -55,6 +55,7 @@ spec:
         - -v={{ .Values.logLevel }}
         - -logtostderr
         - -namespace={{ .Values.sparkJobNamespace }}
+        - -enable-ui-service={{ .Values.uiService.enable}}
         - -ingress-url-format={{ .Values.ingressUrlFormat }}
         - -controller-threads={{ .Values.controllerThreads }}
         - -resync-interval={{ .Values.resyncInterval }}

charts/spark-operator-chart/values.yaml

@@ -53,7 +53,12 @@ controllerThreads: 10
 # unrelated to this setting
 resyncInterval: 30
 
-# -- Ingress URL format
+uiService:
+  # -- Enable UI service creation for Spark application
+  enable: true
+
+# -- Ingress URL format.
+# Requires the UI service to be enabled by setting `uiService.enable` to true.
 ingressUrlFormat: ""
 
 # -- Set higher levels for more verbose logging

main.go

@@ -60,6 +60,7 @@ var (
 	enableWebhook                  = flag.Bool("enable-webhook", false, "Whether to enable the mutating admission webhook for admitting and patching Spark pods.")
 	enableResourceQuotaEnforcement = flag.Bool("enable-resource-quota-enforcement", false, "Whether to enable ResourceQuota enforcement for SparkApplication resources. Requires the webhook to be enabled.")
 	ingressURLFormat               = flag.String("ingress-url-format", "", "Ingress URL format.")
+	enableUIService                = flag.Bool("enable-ui-service", true, "Enable Spark service UI.")
 	enableLeaderElection           = flag.Bool("leader-election", false, "Enable Spark operator leader election.")
 	leaderElectionLockNamespace    = flag.String("leader-election-lock-namespace", "spark-operator", "Namespace in which to create the ConfigMap for leader election.")
 	leaderElectionLockName         = flag.String("leader-election-lock-name", "spark-operator-lock", "Name of the ConfigMap for leader election.")
@@ -178,7 +179,7 @@ func main() {
 	}
 
 	applicationController := sparkapplication.NewController(
-		crClient, kubeClient, crInformerFactory, podInformerFactory, metricConfig, *namespace, *ingressURLFormat, batchSchedulerMgr)
+		crClient, kubeClient, crInformerFactory, podInformerFactory, metricConfig, *namespace, *ingressURLFormat, batchSchedulerMgr, *enableUIService)
 	scheduledApplicationController := scheduledsparkapplication.NewController(
 		crClient, kubeClient, apiExtensionsClient, crInformerFactory, clock.RealClock{})
 

pkg/controller/sparkapplication/controller.go

@@ -77,6 +77,7 @@ type Controller struct {
 	podLister         v1.PodLister
 	ingressURLFormat  string
 	batchSchedulerMgr *batchscheduler.SchedulerManager
+	enableUIService   bool
 }
 
 // NewController creates a new Controller.
@@ -88,7 +89,8 @@ func NewController(
 	metricsConfig *util.MetricConfig,
 	namespace string,
 	ingressURLFormat string,
-	batchSchedulerMgr *batchscheduler.SchedulerManager) *Controller {
+	batchSchedulerMgr *batchscheduler.SchedulerManager,
+	enableUIService bool) *Controller {
 	crdscheme.AddToScheme(scheme.Scheme)
 
 	eventBroadcaster := record.NewBroadcaster()
@@ -98,7 +100,7 @@ func NewController(
 	})
 	recorder := eventBroadcaster.NewRecorder(scheme.Scheme, apiv1.EventSource{Component: "spark-operator"})
 
-	return newSparkApplicationController(crdClient, kubeClient, crdInformerFactory, podInformerFactory, recorder, metricsConfig, ingressURLFormat, batchSchedulerMgr)
+	return newSparkApplicationController(crdClient, kubeClient, crdInformerFactory, podInformerFactory, recorder, metricsConfig, ingressURLFormat, batchSchedulerMgr, enableUIService)
 }
 
 func newSparkApplicationController(
@@ -109,7 +111,8 @@ func newSparkApplicationController(
 	eventRecorder record.EventRecorder,
 	metricsConfig *util.MetricConfig,
 	ingressURLFormat string,
-	batchSchedulerMgr *batchscheduler.SchedulerManager) *Controller {
+	batchSchedulerMgr *batchscheduler.SchedulerManager,
+	enableUIService bool) *Controller {
 	queue := workqueue.NewNamedRateLimitingQueue(&workqueue.BucketRateLimiter{Limiter: rate.NewLimiter(rate.Limit(queueTokenRefillRate), queueTokenBucketSize)},
 		"spark-application-controller")
 
@@ -120,6 +123,7 @@ func newSparkApplicationController(
 		queue:             queue,
 		ingressURLFormat:  ingressURLFormat,
 		batchSchedulerMgr: batchSchedulerMgr,
+		enableUIService:   enableUIService,
 	}
 
 	if metricsConfig != nil {
@@ -699,21 +703,23 @@ func (c *Controller) submitSparkApplication(app *v1beta2.SparkApplication) *v1be
 	}
 	c.recordSparkApplicationEvent(app)
 
-	service, err := createSparkUIService(app, c.kubeClient)
-	if err != nil {
-		glog.Errorf("failed to create UI service for SparkApplication %s/%s: %v", app.Namespace, app.Name, err)
-	} else {
-		app.Status.DriverInfo.WebUIServiceName = service.serviceName
-		app.Status.DriverInfo.WebUIPort = service.servicePort
-		app.Status.DriverInfo.WebUIAddress = fmt.Sprintf("%s:%d", service.serviceIP, app.Status.DriverInfo.WebUIPort)
-		// Create UI Ingress if ingress-format is set.
-		if c.ingressURLFormat != "" {
-			ingress, err := createSparkUIIngress(app, *service, c.ingressURLFormat, c.kubeClient)
-			if err != nil {
-				glog.Errorf("failed to create UI Ingress for SparkApplication %s/%s: %v", app.Namespace, app.Name, err)
-			} else {
-				app.Status.DriverInfo.WebUIIngressAddress = ingress.ingressURL
-				app.Status.DriverInfo.WebUIIngressName = ingress.ingressName
+	if c.enableUIService {
+		service, err := createSparkUIService(app, c.kubeClient)
+		if err != nil {
+			glog.Errorf("failed to create UI service for SparkApplication %s/%s: %v", app.Namespace, app.Name, err)
+		} else {
+			app.Status.DriverInfo.WebUIServiceName = service.serviceName
+			app.Status.DriverInfo.WebUIPort = service.servicePort
+			app.Status.DriverInfo.WebUIAddress = fmt.Sprintf("%s:%d", service.serviceIP, app.Status.DriverInfo.WebUIPort)
+			// Create UI Ingress if ingress-format is set.
+			if c.ingressURLFormat != "" {
+				ingress, err := createSparkUIIngress(app, *service, c.ingressURLFormat, c.kubeClient)
+				if err != nil {
+					glog.Errorf("failed to create UI Ingress for SparkApplication %s/%s: %v", app.Namespace, app.Name, err)
+				} else {
+					app.Status.DriverInfo.WebUIIngressAddress = ingress.ingressURL
+					app.Status.DriverInfo.WebUIIngressName = ingress.ingressName
+				}
 			}
 		}
 	}

pkg/controller/sparkapplication/controller_test.go

@@ -67,7 +67,7 @@ func newFakeController(app *v1beta2.SparkApplication, pods ...*apiv1.Pod) (*Cont
 
 	podInformerFactory := informers.NewSharedInformerFactory(kubeClient, 0*time.Second)
 	controller := newSparkApplicationController(crdClient, kubeClient, informerFactory, podInformerFactory, recorder,
-		&util.MetricConfig{}, "", nil)
+		&util.MetricConfig{}, "", nil, true)
 
 	informer := informerFactory.Sparkoperator().V1beta2().SparkApplications().Informer()
 	if app != nil {