feat: normalize dynamo namespace computation (#5231)

Signed-off-by: Hannah Zhang <hannahz@nvidia.com>

benchmarks/profiler/utils/config.py

@@ -93,7 +93,6 @@ class DgdPlannerServiceConfig(BaseModel):
     automatically created and mounted by the profiler; no PVC dependencies
     """
 
-    dynamoNamespace: str = "dynamo"  # placeholder
     componentType: str = "planner"
     replicas: int = 1
     extraPodSpec: PodSpec = PodSpec(

benchmarks/profiler/utils/dgd_generation.py

@@ -261,7 +261,6 @@ def generate_dgd_config_with_planner(
     # add the planner service
     planner_config = DgdPlannerServiceConfig()
     frontend_service = config.spec.services["Frontend"]
-    planner_config.dynamoNamespace = getattr(frontend_service, "dynamoNamespace", "dynamo")  # type: ignore[attr-defined]
     frontend_image: Optional[str] = None
     if frontend_service.extraPodSpec and frontend_service.extraPodSpec.mainContainer:
         frontend_image = frontend_service.extraPodSpec.mainContainer.image
@@ -275,8 +274,6 @@ def generate_dgd_config_with_planner(
 
     # Override profiling-specific arguments with results from profiling
     # Remove and re-add to ensure correct values from profiling context
-    # Note: --namespace is NOT added here; planner gets it from DYN_NAMESPACE env var
-    # which is automatically injected by the operator based on dynamoNamespace
     planner_args = [
         arg
         for arg in planner_args
@@ -511,17 +508,6 @@ def _generate_mocker_config_with_planner(
     # Add planner service (reuse the same planner config but with mocker backend)
     mocker_planner_dict = copy.deepcopy(planner_dict)
 
-    # Get the mocker's dynamoNamespace from Frontend service
-    mocker_namespace = (
-        mocker_config.get("spec", {})
-        .get("services", {})
-        .get("Frontend", {})
-        .get("dynamoNamespace", "mocker-disagg")
-    )
-
-    # Update planner's dynamoNamespace to match mocker's namespace
-    mocker_planner_dict["dynamoNamespace"] = mocker_namespace
-
     # Planner args use --key=value format, so we need to find and replace
     planner_main_container = mocker_planner_dict.get("extraPodSpec", {}).get(
         "mainContainer", {}

deploy/discovery/dgd.yaml

@@ -14,14 +14,12 @@ spec:
     value: "debug"
   services:
     Frontend:
-      dynamoNamespace: dynamo
       componentType: frontend
       replicas: 1
       extraPodSpec:
         mainContainer:
           image: ${IMAGE}
     VllmDecodeWorker:
-      dynamoNamespace: vllm-disagg
       componentType: decode
       replicas: 1
       resources:
@@ -40,7 +38,6 @@ spec:
             - --model
             - Qwen/Qwen3-0.6B
     VllmPrefillWorker:
-      dynamoNamespace: vllm-disagg
       componentType: prefill
       replicas: 1
       resources:

deploy/operator/api/v1alpha1/dynamocomponentdeployment_types.go

@@ -20,6 +20,8 @@
 package v1alpha1
 
 import (
+	"fmt"
+
 	commonconsts "github.com/ai-dynamo/dynamo/deploy/operator/internal/consts"
 	corev1 "k8s.io/api/core/v1"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
@@ -309,6 +311,21 @@ func (s *DynamoComponentDeployment) GetParentGraphDeploymentNamespace() string {
 	return s.GetNamespace()
 }
 
+// GetDynamoNamespace returns the Dynamo namespace for this component.
+func (s *DynamoComponentDeployment) GetDynamoNamespace() string {
+	return ComputeDynamoNamespace(s.Spec.GlobalDynamoNamespace, s.GetNamespace(), s.GetParentGraphDeploymentName())
+}
+
+// ComputeDynamoNamespace is the single source of truth for computing the Dynamo namespace.
+// If globalDynamoNamespace is true, returns "dynamo" (global constant).
+// Otherwise, returns {k8sNamespace}-{dgdName}.
+func ComputeDynamoNamespace(globalDynamoNamespace bool, k8sNamespace, dgdName string) string {
+	if globalDynamoNamespace {
+		return commonconsts.GlobalDynamoNamespace
+	}
+	return fmt.Sprintf("%s-%s", k8sNamespace, dgdName)
+}
+
 // ModelReference identifies a model served by this component
 type ModelReference struct {
 	// Name is the base model identifier (e.g., "llama-3-70b-instruct-v1")

deploy/operator/api/v1alpha1/dynamographdeployment_types.go

@@ -233,3 +233,8 @@ func (s *DynamoGraphDeployment) HasAnyMultinodeService() bool {
 	}
 	return false
 }
+
+// GetDynamoNamespaceForService returns the Dynamo namespace for a given service.
+func (s *DynamoGraphDeployment) GetDynamoNamespaceForService(service *DynamoComponentDeploymentSharedSpec) string {
+	return ComputeDynamoNamespace(service.GlobalDynamoNamespace, s.GetNamespace(), s.GetName())
+}

deploy/operator/internal/controller/dynamocomponentdeployment_controller_test.go

@@ -851,7 +851,7 @@ func TestDynamoComponentDeploymentReconciler_generateLeaderWorkerSet(t *testing.
 											{Name: commonconsts.DynamoComponentEnvVar, Value: commonconsts.ComponentTypeWorker},
 											{Name: commonconsts.DynamoDiscoveryBackendEnvVar, Value: "kubernetes"},
 											{Name: "DYN_HEALTH_CHECK_ENABLED", Value: "false"},
-											{Name: commonconsts.DynamoNamespaceEnvVar, Value: "default"},
+											{Name: commonconsts.DynamoNamespaceEnvVar, Value: "default-test-lws-deploy"},
 											{Name: "DYN_PARENT_DGD_K8S_NAME", Value: "test-lws-deploy"},
 											{Name: "DYN_PARENT_DGD_K8S_NAMESPACE", Value: "default"},
 											{Name: "DYN_SYSTEM_ENABLED", Value: "true"},
@@ -986,7 +986,7 @@ func TestDynamoComponentDeploymentReconciler_generateLeaderWorkerSet(t *testing.
 											{Name: commonconsts.DynamoComponentEnvVar, Value: commonconsts.ComponentTypeWorker},
 											{Name: commonconsts.DynamoDiscoveryBackendEnvVar, Value: "kubernetes"},
 											{Name: "DYN_HEALTH_CHECK_ENABLED", Value: "false"},
-											{Name: commonconsts.DynamoNamespaceEnvVar, Value: "default"},
+											{Name: commonconsts.DynamoNamespaceEnvVar, Value: "default-test-lws-deploy"},
 											{Name: "DYN_PARENT_DGD_K8S_NAME", Value: "test-lws-deploy"},
 											{Name: "DYN_PARENT_DGD_K8S_NAMESPACE", Value: "default"},
 											{Name: "DYN_SYSTEM_ENABLED", Value: "true"},

deploy/operator/internal/controller/dynamographdeployment_controller.go

@@ -154,6 +154,17 @@ func (r *DynamoGraphDeploymentReconciler) Reconcile(ctx context.Context, req ctr
 		logger.Info("Reconciliation done")
 	}()
 
+	// Handle finalizer
+	deleted, err := commoncontroller.HandleFinalizer(ctx, dynamoDeployment, r.Client, r)
+	if err != nil {
+		logger.Error(err, "failed to handle the finalizer")
+		reason = "failed_to_handle_the_finalizer"
+		return ctrl.Result{}, err
+	}
+	if deleted {
+		return ctrl.Result{}, nil
+	}
+
 	// Validate the DynamoGraphDeployment spec (defense in depth - only when webhooks are disabled)
 	if !r.Config.WebhooksEnabled {
 		validator := webhookvalidation.NewDynamoGraphDeploymentValidator(dynamoDeployment)
@@ -176,15 +187,6 @@ func (r *DynamoGraphDeploymentReconciler) Reconcile(ctx context.Context, req ctr
 		}
 	}
 
-	deleted, err := commoncontroller.HandleFinalizer(ctx, dynamoDeployment, r.Client, r)
-	if err != nil {
-		logger.Error(err, "failed to handle the finalizer")
-		reason = "failed_to_handle_the_finalizer"
-		return ctrl.Result{}, err
-	}
-	if deleted {
-		return ctrl.Result{}, nil
-	}
 	reconcileResult, err := r.reconcileResources(ctx, dynamoDeployment)
 
 	state = reconcileResult.State

deploy/operator/internal/dynamo/graph.go

@@ -337,10 +337,7 @@ func GenerateDynamoComponentsDeployments(ctx context.Context, parentDynamoGraphD
 }
 
 func getDynamoNamespace(object metav1.Object, service *v1alpha1.DynamoComponentDeploymentSharedSpec) string {
-	if service.GlobalDynamoNamespace {
-		return commonconsts.GlobalDynamoNamespace
-	}
-	return fmt.Sprintf("%s-%s", object.GetNamespace(), object.GetName())
+	return v1alpha1.ComputeDynamoNamespace(service.GlobalDynamoNamespace, object.GetNamespace(), object.GetName())
 }
 
 // updateDynDeploymentConfig updates the runtime config object for the given dynamoDeploymentComponent
@@ -1071,15 +1068,15 @@ func setMetricsLabels(labels map[string]string, dynamoGraphDeployment *v1alpha1.
 }
 
 func generateComponentContext(component *v1alpha1.DynamoComponentDeploymentSharedSpec, parentGraphDeploymentName string, namespace string, numberOfNodes int32, discoveryBackend string) ComponentContext {
+	dynamoNamespace := v1alpha1.ComputeDynamoNamespace(component.GlobalDynamoNamespace, namespace, parentGraphDeploymentName)
+
 	componentContext := ComponentContext{
 		numberOfNodes:                  numberOfNodes,
 		ComponentType:                  component.ComponentType,
 		ParentGraphDeploymentName:      parentGraphDeploymentName,
 		ParentGraphDeploymentNamespace: namespace,
 		DiscoveryBackend:               discoveryBackend,
-	}
-	if component.DynamoNamespace != nil {
-		componentContext.DynamoNamespace = *component.DynamoNamespace
+		DynamoNamespace:                dynamoNamespace,
 	}
 	return componentContext
 }

deploy/operator/internal/dynamo/graph_test.go

@@ -780,6 +780,123 @@ func Test_GetDynamoComponentDeploymentsGlobalNamespace(t *testing.T) {
 	}
 }
 
+// TestGenerateComponentContext tests the generateComponentContext function
+// to ensure it correctly computes the DynamoNamespace from authoritative sources
+// (k8s namespace + DGD name), ignoring any deprecated dynamoNamespace field.
+func TestGenerateComponentContext(t *testing.T) {
+	tests := []struct {
+		name                       string
+		component                  *v1alpha1.DynamoComponentDeploymentSharedSpec
+		parentGraphDeploymentName  string
+		namespace                  string
+		numberOfNodes              int32
+		discoveryBackend           string
+		expectedDynamoNamespace    string
+		expectedComponentType      string
+		expectedParentDGDName      string
+		expectedParentDGDNamespace string
+	}{
+		{
+			name: "namespace-scoped operator: computes correct dynamo namespace",
+			component: &v1alpha1.DynamoComponentDeploymentSharedSpec{
+				ComponentType: commonconsts.ComponentTypePlanner,
+				// Deprecated field set to incorrect value - should be ignored
+				DynamoNamespace: ptr.To("old-incorrect-value"),
+			},
+			parentGraphDeploymentName:  "my-deployment",
+			namespace:                  "my-namespace",
+			numberOfNodes:              1,
+			discoveryBackend:           "kubernetes",
+			expectedDynamoNamespace:    "my-namespace-my-deployment",
+			expectedComponentType:      commonconsts.ComponentTypePlanner,
+			expectedParentDGDName:      "my-deployment",
+			expectedParentDGDNamespace: "my-namespace",
+		},
+		{
+			name: "deprecated dynamoNamespace field is ignored",
+			component: &v1alpha1.DynamoComponentDeploymentSharedSpec{
+				ComponentType: commonconsts.ComponentTypeFrontend,
+				// This is the bug case: profiler sets dynamoNamespace to just DGD name
+				DynamoNamespace: ptr.To("vllm-disagg"),
+			},
+			parentGraphDeploymentName:  "vllm-disagg",
+			namespace:                  "djangoz",
+			numberOfNodes:              1,
+			discoveryBackend:           "kubernetes",
+			expectedDynamoNamespace:    "djangoz-vllm-disagg", // Should be k8s-namespace + DGD name
+			expectedComponentType:      commonconsts.ComponentTypeFrontend,
+			expectedParentDGDName:      "vllm-disagg",
+			expectedParentDGDNamespace: "djangoz",
+		},
+		{
+			name: "GlobalDynamoNamespace takes precedence",
+			component: &v1alpha1.DynamoComponentDeploymentSharedSpec{
+				ComponentType:         commonconsts.ComponentTypeWorker,
+				GlobalDynamoNamespace: true,
+				// Even with deprecated field set, GlobalDynamoNamespace should win
+				DynamoNamespace: ptr.To("should-be-ignored"),
+			},
+			parentGraphDeploymentName:  "shared-frontend",
+			namespace:                  "production",
+			numberOfNodes:              2,
+			discoveryBackend:           "etcd",
+			expectedDynamoNamespace:    commonconsts.GlobalDynamoNamespace, // "dynamo"
+			expectedComponentType:      commonconsts.ComponentTypeWorker,
+			expectedParentDGDName:      "shared-frontend",
+			expectedParentDGDNamespace: "production",
+		},
+		{
+			name: "nil dynamoNamespace field still computes correctly",
+			component: &v1alpha1.DynamoComponentDeploymentSharedSpec{
+				ComponentType:   commonconsts.ComponentTypePlanner,
+				DynamoNamespace: nil, // Not set at all
+			},
+			parentGraphDeploymentName:  "test-dgd",
+			namespace:                  "default",
+			numberOfNodes:              1,
+			discoveryBackend:           "kubernetes",
+			expectedDynamoNamespace:    "default-test-dgd",
+			expectedComponentType:      commonconsts.ComponentTypePlanner,
+			expectedParentDGDName:      "test-dgd",
+			expectedParentDGDNamespace: "default",
+		},
+		{
+			name: "different namespace and DGD name combinations",
+			component: &v1alpha1.DynamoComponentDeploymentSharedSpec{
+				ComponentType: commonconsts.ComponentTypeFrontend,
+			},
+			parentGraphDeploymentName:  "llama-70b-prod",
+			namespace:                  "ml-inference",
+			numberOfNodes:              4,
+			discoveryBackend:           "nats",
+			expectedDynamoNamespace:    "ml-inference-llama-70b-prod",
+			expectedComponentType:      commonconsts.ComponentTypeFrontend,
+			expectedParentDGDName:      "llama-70b-prod",
+			expectedParentDGDNamespace: "ml-inference",
+		},
+	}
+
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			ctx := generateComponentContext(
+				tt.component,
+				tt.parentGraphDeploymentName,
+				tt.namespace,
+				tt.numberOfNodes,
+				tt.discoveryBackend,
+			)
+
+			assert.Equal(t, tt.expectedDynamoNamespace, ctx.DynamoNamespace,
+				"DynamoNamespace should be computed from k8s namespace + DGD name")
+			assert.Equal(t, tt.expectedComponentType, ctx.ComponentType)
+			assert.Equal(t, tt.expectedParentDGDName, ctx.ParentGraphDeploymentName)
+			assert.Equal(t, tt.expectedParentDGDNamespace, ctx.ParentGraphDeploymentNamespace)
+			assert.Equal(t, tt.numberOfNodes, ctx.numberOfNodes)
+			assert.Equal(t, tt.discoveryBackend, ctx.DiscoveryBackend)
+		})
+	}
+}
+
 func Test_updateDynDeploymentConfig(t *testing.T) {
 	type args struct {
 		dynamoDeploymentComponent *v1alpha1.DynamoComponentDeployment
@@ -5139,7 +5256,7 @@ func TestGenerateBasePodSpec_Worker(t *testing.T) {
 							{Name: commonconsts.DynamoComponentEnvVar, Value: "worker"},
 							{Name: commonconsts.DynamoDiscoveryBackendEnvVar, Value: "kubernetes"},
 							{Name: "DYN_HEALTH_CHECK_ENABLED", Value: "false"},
-							{Name: commonconsts.DynamoNamespaceEnvVar, Value: ""},
+							{Name: commonconsts.DynamoNamespaceEnvVar, Value: "default-test-deployment"},
 							{Name: "DYN_PARENT_DGD_K8S_NAME", Value: "test-deployment"},
 							{Name: "DYN_PARENT_DGD_K8S_NAMESPACE", Value: "default"},
 							{Name: "DYN_SYSTEM_ENABLED", Value: "true"},

deploy/operator/internal/webhook/validation/dynamocomponentdeployment.go

@@ -41,7 +41,8 @@ func NewDynamoComponentDeploymentValidator(deployment *nvidiacomv1alpha1.DynamoC
 // Returns warnings and error.
 func (v *DynamoComponentDeploymentValidator) Validate() (admission.Warnings, error) {
 	// Validate shared spec fields using SharedSpecValidator
-	sharedValidator := NewSharedSpecValidator(&v.deployment.Spec.DynamoComponentDeploymentSharedSpec, "spec")
+	calculatedNamespace := v.deployment.GetDynamoNamespace()
+	sharedValidator := NewSharedSpecValidator(&v.deployment.Spec.DynamoComponentDeploymentSharedSpec, "spec", calculatedNamespace)
 
 	// DCD-specific validation would go here (currently none)
 

deploy/operator/internal/webhook/validation/dynamographdeployment.go

@@ -226,7 +226,8 @@ func (v *DynamoGraphDeploymentValidator) validateReplicasChanges(old *nvidiacomv
 func (v *DynamoGraphDeploymentValidator) validateService(serviceName string, service *nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec) (admission.Warnings, error) {
 	// Use SharedSpecValidator to validate service spec (which is a DynamoComponentDeploymentSharedSpec)
 	fieldPath := fmt.Sprintf("spec.services[%s]", serviceName)
-	sharedValidator := NewSharedSpecValidator(service, fieldPath)
+	calculatedNamespace := v.deployment.GetDynamoNamespaceForService(service)
+	sharedValidator := NewSharedSpecValidator(service, fieldPath, calculatedNamespace)
 	return sharedValidator.Validate()
 }
 

deploy/operator/internal/webhook/validation/shared.go

@@ -30,20 +30,36 @@ import (
 type SharedSpecValidator struct {
 	spec                *nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec
 	fieldPath           string // e.g., "spec" for DCD, "spec.services[foo]" for DGD
+	calculatedNamespace string // The namespace that will be used: {k8s_namespace}-{dgd_name}
 }
 
 // NewSharedSpecValidator creates a new validator for DynamoComponentDeploymentSharedSpec.
 // fieldPath is used to provide context in error messages (e.g., "spec" or "spec.services[main]").
-func NewSharedSpecValidator(spec *nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec, fieldPath string) *SharedSpecValidator {
+// calculatedNamespace is the namespace the operator will use:
+//   - If GlobalDynamoNamespace is true: "dynamo" (global constant)
+//   - Otherwise: {k8s_namespace}-{dgd_name}
+func NewSharedSpecValidator(spec *nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec, fieldPath string, calculatedNamespace string) *SharedSpecValidator {
 	return &SharedSpecValidator{
 		spec:                spec,
 		fieldPath:           fieldPath,
+		calculatedNamespace: calculatedNamespace,
 	}
 }
 
 // Validate performs validation on the shared spec fields.
 // Returns warnings (e.g., deprecation notices) and error if validation fails.
 func (v *SharedSpecValidator) Validate() (admission.Warnings, error) {
+	// Collect warnings (e.g., deprecation notices)
+	var warnings admission.Warnings
+
+	// Warn about deprecated dynamoNamespace field
+	if v.spec.DynamoNamespace != nil && *v.spec.DynamoNamespace != "" {
+		warnings = append(warnings, fmt.Sprintf(
+			"%s.dynamoNamespace is deprecated and ignored. Value '%s' will be replaced with '%s'. "+
+				"Remove this field from your configuration",
+			v.fieldPath, *v.spec.DynamoNamespace, v.calculatedNamespace))
+	}
+
 	// Validate replicas if specified
 	if v.spec.Replicas != nil && *v.spec.Replicas < 0 {
 		return nil, fmt.Errorf("%s.replicas must be non-negative", v.fieldPath)
@@ -68,9 +84,6 @@ func (v *SharedSpecValidator) Validate() (admission.Warnings, error) {
 		}
 	}
 
-	// Collect warnings (e.g., deprecation notices)
-	var warnings admission.Warnings
-
 	// Check for deprecated autoscaling field
 	//nolint:staticcheck // SA1019: Intentionally checking deprecated field to warn users
 	if v.spec.Autoscaling != nil {

deploy/operator/internal/webhook/validation/shared_test.go

@@ -24,6 +24,11 @@ import (
 	"k8s.io/apimachinery/pkg/api/resource"
 )
 
+// ptr is a helper function to create a pointer to a string
+func ptr(s string) *string {
+	return &s
+}
+
 func TestSharedSpecValidator_Validate(t *testing.T) {
 	var (
 		negativeReplicas = int32(-1)
@@ -34,6 +39,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 		name                string
 		spec                *nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec
 		fieldPath           string
+		calculatedNamespace string
 		wantErr             bool
 		errMsg              string
 	}{
@@ -61,6 +67,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             false,
 		},
 		{
@@ -69,9 +76,28 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				Replicas: &negativeReplicas,
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             true,
 			errMsg:              "spec.replicas must be non-negative",
 		},
+		{
+			name: "nil dynamoNamespace is allowed",
+			spec: &nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec{
+				DynamoNamespace: nil,
+			},
+			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
+			wantErr:             false,
+		},
+		{
+			name: "empty string dynamoNamespace is allowed",
+			spec: &nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec{
+				DynamoNamespace: ptr(""),
+			},
+			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
+			wantErr:             false,
+		},
 		{
 			name: "ingress enabled without host",
 			spec: &nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec{
@@ -81,6 +107,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             true,
 			errMsg:              "spec.ingress.host is required when ingress is enabled",
 		},
@@ -93,6 +120,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             false,
 		},
 		{
@@ -107,6 +135,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             true,
 			errMsg:              "spec.volumeMounts[0].mountPoint is required when useAsCompilationCache is false",
 		},
@@ -121,6 +150,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             false,
 		},
 		{
@@ -134,6 +164,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             false,
 		},
 		{
@@ -145,6 +176,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             true,
 			errMsg:              "spec.sharedMemory.size is required when disabled is false",
 		},
@@ -157,6 +189,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             false,
 		},
 		{
@@ -168,6 +201,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             false,
 		},
 		{
@@ -176,6 +210,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 				Replicas: &negativeReplicas,
 			},
 			fieldPath:           "spec.services[main]",
+			calculatedNamespace: "default-my-dgd",
 			wantErr:             true,
 			errMsg:              "spec.services[main].replicas must be non-negative",
 		},
@@ -183,7 +218,7 @@ func TestSharedSpecValidator_Validate(t *testing.T) {
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			validator := NewSharedSpecValidator(tt.spec, tt.fieldPath)
+			validator := NewSharedSpecValidator(tt.spec, tt.fieldPath, tt.calculatedNamespace)
 			_, err := validator.Validate()
 
 			if (err != nil) != tt.wantErr {
@@ -205,7 +240,9 @@ func TestSharedSpecValidator_Validate_Warnings(t *testing.T) {
 		name                string
 		spec                *nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec
 		fieldPath           string
+		calculatedNamespace string
 		wantWarnings        int
+		wantWarningContains string // optional substring to check in warning
 	}{
 		{
 			name: "no warnings for spec without autoscaling",
@@ -213,6 +250,7 @@ func TestSharedSpecValidator_Validate_Warnings(t *testing.T) {
 				Replicas: &validReplicas,
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantWarnings:        0,
 		},
 		{
@@ -227,13 +265,25 @@ func TestSharedSpecValidator_Validate_Warnings(t *testing.T) {
 				},
 			},
 			fieldPath:           "spec",
+			calculatedNamespace: "default-my-dgd",
 			wantWarnings:        1,
 		},
+		{
+			name: "warning for deprecated dynamoNamespace field shows calculated namespace",
+			spec: &nvidiacomv1alpha1.DynamoComponentDeploymentSharedSpec{
+				Replicas:        &validReplicas,
+				DynamoNamespace: ptr("my-custom-namespace"),
+			},
+			fieldPath:           "spec.services[Frontend]",
+			calculatedNamespace: "hannahz-trtllm-disagg",
+			wantWarnings:        1,
+			wantWarningContains: "Value 'my-custom-namespace' will be replaced with 'hannahz-trtllm-disagg'",
+		},
 	}
 
 	for _, tt := range tests {
 		t.Run(tt.name, func(t *testing.T) {
-			validator := NewSharedSpecValidator(tt.spec, tt.fieldPath)
+			validator := NewSharedSpecValidator(tt.spec, tt.fieldPath, tt.calculatedNamespace)
 			warnings, err := validator.Validate()
 
 			if err != nil {
@@ -244,6 +294,34 @@ func TestSharedSpecValidator_Validate_Warnings(t *testing.T) {
 			if len(warnings) != tt.wantWarnings {
 				t.Errorf("SharedSpecValidator.Validate() warnings count = %d, want %d", len(warnings), tt.wantWarnings)
 			}
+
+			if tt.wantWarningContains != "" && len(warnings) > 0 {
+				found := false
+				for _, w := range warnings {
+					if contains(w, tt.wantWarningContains) {
+						found = true
+						break
+					}
+				}
+				if !found {
+					t.Errorf("SharedSpecValidator.Validate() warnings = %v, want warning containing %q", warnings, tt.wantWarningContains)
+				}
+			}
 		})
 	}
 }
+
+// contains checks if s contains substr
+func contains(s, substr string) bool {
+	return len(s) >= len(substr) && (s == substr || len(substr) == 0 ||
+		(len(s) > 0 && len(substr) > 0 && findSubstring(s, substr)))
+}
+
+func findSubstring(s, substr string) bool {
+	for i := 0; i <= len(s)-len(substr); i++ {
+		if s[i:i+len(substr)] == substr {
+			return true
+		}
+	}
+	return false
+}

examples/backends/mocker/deploy/agg.yaml

@@ -8,7 +8,6 @@ metadata:
 spec:
   services:
     Frontend:
-      dynamoNamespace: mocker-agg
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -16,7 +15,6 @@ spec:
           image: my-registry/mocker-runtime:my-tag
     decode:
       envFromSecret: hf-token-secret
-      dynamoNamespace: mocker-agg
       componentType: worker
       subComponentType: decode
       replicas: 1

examples/backends/mocker/deploy/disagg.yaml

@@ -8,7 +8,6 @@ metadata:
 spec:
   services:
     Frontend:
-      dynamoNamespace: mocker-disagg
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -16,7 +15,6 @@ spec:
           image: my-registry/mocker-runtime:my-tag
     prefill:
       envFromSecret: hf-token-secret
-      dynamoNamespace: mocker-disagg
       componentType: worker
       subComponentType: prefill
       replicas: 1
@@ -40,7 +38,6 @@ spec:
             - --is-prefill-worker
     decode:
       envFromSecret: hf-token-secret
-      dynamoNamespace: mocker-disagg
       componentType: worker
       subComponentType: decode
       replicas: 1

examples/backends/sglang/deploy/agg.yaml

@@ -8,7 +8,6 @@ metadata:
 spec:
   services:
     Frontend:
-      dynamoNamespace: sglang-agg
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -16,7 +15,6 @@ spec:
           image: my-registry/sglang-runtime:my-tag
     decode:
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-agg
       componentType: worker
       replicas: 1
       resources:

examples/backends/sglang/deploy/agg_logging.yaml

@@ -11,7 +11,6 @@ spec:
     value: "1"
   services:
     Frontend:
-      dynamoNamespace: sglang-agg
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -19,7 +18,6 @@ spec:
           image: my-registry/sglang-runtime:my-tag
     decode:
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-agg
       componentType: worker
       replicas: 1
       resources:

examples/backends/sglang/deploy/agg_router.yaml

@@ -8,7 +8,6 @@ metadata:
 spec:
   services:
     Frontend:
-      dynamoNamespace: sglang-agg-router
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -19,7 +18,6 @@ spec:
           value: kv
     decode:
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-agg-router
       componentType: worker
       replicas: 1
       resources:

examples/backends/sglang/deploy/disagg-multinode.yaml

@@ -17,7 +17,6 @@ spec:
   backendFramework: sglang
   services:
     Frontend:
-      dynamoNamespace: sglang-disagg-multinode
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -27,7 +26,6 @@ spec:
       multinode:
         nodeCount: 2
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-disagg-multinode
       componentType: worker
       replicas: 1
       resources:
@@ -64,7 +62,6 @@ spec:
       multinode:
         nodeCount: 2
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-disagg-multinode
       componentType: worker
       replicas: 1
       resources:

examples/backends/sglang/deploy/disagg.yaml

@@ -8,7 +8,6 @@ metadata:
 spec:
   services:
     Frontend:
-      dynamoNamespace: sglang-disagg
       componentType: frontend
       replicas: 1
       extraPodSpec:
@@ -16,7 +15,6 @@ spec:
           image: my-registry/sglang-runtime:my-tag
     decode:
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-disagg
       componentType: worker
       subComponentType: decode
       replicas: 1
@@ -52,7 +50,6 @@ spec:
             - "0.0.0.0"
     prefill:
       envFromSecret: hf-token-secret
-      dynamoNamespace: sglang-disagg
       componentType: worker
       subComponentType: prefill
       replicas: 1