api_reference.md

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> **⚠️ Important**: This documentation is automatically generated from source code.
> Do not edit this file directly.

# API Reference

## Packages
- [nvidia.com/v1alpha1](#nvidiacomv1alpha1)


## nvidia.com/v1alpha1

Package v1alpha1 contains API Schema definitions for the nvidia.com v1alpha1 API group.

This package defines the DynamoGraphDeploymentRequest (DGDR) custom resource, which provides
a high-level, SLA-driven interface for deploying machine learning models on Dynamo.

Package v1alpha1 contains API Schema definitions for the nvidia.com v1alpha1 API group.

### Resource Types
- [DynamoComponentDeployment](#dynamocomponentdeployment)
- [DynamoGraphDeployment](#dynamographdeployment)
- [DynamoGraphDeploymentRequest](#dynamographdeploymentrequest)
- [DynamoGraphDeploymentScalingAdapter](#dynamographdeploymentscalingadapter)
- [DynamoModel](#dynamomodel)



#### Autoscaling



Deprecated: This field is deprecated and ignored. Use DynamoGraphDeploymentScalingAdapter
with HPA, KEDA, or Planner for autoscaling instead. See docs/kubernetes/autoscaling.md
for migration guidance. This field will be removed in a future API version.



_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `enabled` _boolean_ | Deprecated: This field is ignored. |  |  |
| `minReplicas` _integer_ | Deprecated: This field is ignored. |  |  |
| `maxReplicas` _integer_ | Deprecated: This field is ignored. |  |  |
| `behavior` _[HorizontalPodAutoscalerBehavior](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#horizontalpodautoscalerbehavior-v2-autoscaling)_ | Deprecated: This field is ignored. |  |  |
| `metrics` _[MetricSpec](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#metricspec-v2-autoscaling) array_ | Deprecated: This field is ignored. |  |  |




#### ComponentKind

_Underlying type:_ _string_

ComponentKind represents the type of underlying Kubernetes resource.

_Validation:_
- Enum: [PodClique PodCliqueScalingGroup Deployment LeaderWorkerSet]

_Appears in:_
- [ServiceReplicaStatus](#servicereplicastatus)

| Field | Description |
| --- | --- |
| `PodClique` | ComponentKindPodClique represents a PodClique resource.<br /> |
| `PodCliqueScalingGroup` | ComponentKindPodCliqueScalingGroup represents a PodCliqueScalingGroup resource.<br /> |
| `Deployment` | ComponentKindDeployment represents a Deployment resource.<br /> |
| `LeaderWorkerSet` | ComponentKindLeaderWorkerSet represents a LeaderWorkerSet resource.<br /> |


#### ConfigMapKeySelector



ConfigMapKeySelector selects a specific key from a ConfigMap.
Used to reference external configuration data stored in ConfigMaps.



_Appears in:_
- [ProfilingConfigSpec](#profilingconfigspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `name` _string_ | Name of the ConfigMap containing the desired data. |  | Required: \{\} <br /> |
| `key` _string_ | Key in the ConfigMap to select. If not specified, defaults to "disagg.yaml". | disagg.yaml |  |


#### DeploymentOverridesSpec



DeploymentOverridesSpec allows users to customize metadata for auto-created DynamoGraphDeployments.
When autoApply is enabled, these overrides are applied to the generated DGD resource.



_Appears in:_
- [DynamoGraphDeploymentRequestSpec](#dynamographdeploymentrequestspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `name` _string_ | Name is the desired name for the created DynamoGraphDeployment.<br />If not specified, defaults to the DGDR name. |  | Optional: \{\} <br /> |
| `namespace` _string_ | Namespace is the desired namespace for the created DynamoGraphDeployment.<br />If not specified, defaults to the DGDR namespace. |  | Optional: \{\} <br /> |
| `labels` _object (keys:string, values:string)_ | Labels are additional labels to add to the DynamoGraphDeployment metadata.<br />These are merged with auto-generated labels from the profiling process. |  | Optional: \{\} <br /> |
| `annotations` _object (keys:string, values:string)_ | Annotations are additional annotations to add to the DynamoGraphDeployment metadata. |  | Optional: \{\} <br /> |
| `workersImage` _string_ | WorkersImage specifies the container image to use for DynamoGraphDeployment worker components.<br />This image is used for both temporary DGDs created during online profiling and the final DGD.<br />If omitted, the image from the base config file (e.g., disagg.yaml) is used.<br />Example: "nvcr.io/nvidia/ai-dynamo/vllm-runtime:0.6.1" |  | Optional: \{\} <br /> |


#### DeploymentStatus



DeploymentStatus tracks the state of an auto-created DynamoGraphDeployment.
This status is populated when autoApply is enabled and a DGD is created.



_Appears in:_
- [DynamoGraphDeploymentRequestStatus](#dynamographdeploymentrequeststatus)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `name` _string_ | Name is the name of the created DynamoGraphDeployment. |  |  |
| `namespace` _string_ | Namespace is the namespace of the created DynamoGraphDeployment. |  |  |
| `state` _string_ | State is the current state of the DynamoGraphDeployment.<br />This value is mirrored from the DGD's status.state field. |  |  |
| `created` _boolean_ | Created indicates whether the DGD has been successfully created.<br />Used to prevent recreation if the DGD is manually deleted by users. |  |  |




#### DynamoComponentDeployment



DynamoComponentDeployment is the Schema for the dynamocomponentdeployments API





| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `apiVersion` _string_ | `nvidia.com/v1alpha1` | | |
| `kind` _string_ | `DynamoComponentDeployment` | | |
| `metadata` _[ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#objectmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. |  |  |
| `spec` _[DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)_ | Spec defines the desired state for this Dynamo component deployment. |  |  |


#### DynamoComponentDeploymentSharedSpec







_Appears in:_
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)
- [DynamoGraphDeploymentSpec](#dynamographdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `annotations` _object (keys:string, values:string)_ | Annotations to add to generated Kubernetes resources for this component<br />(such as Pod, Service, and Ingress when applicable). |  |  |
| `labels` _object (keys:string, values:string)_ | Labels to add to generated Kubernetes resources for this component. |  |  |
| `serviceName` _string_ | The name of the component |  |  |
| `componentType` _string_ | ComponentType indicates the role of this component (for example, "main"). |  |  |
| `subComponentType` _string_ | SubComponentType indicates the sub-role of this component (for example, "prefill"). |  |  |
| `dynamoNamespace` _string_ | DynamoNamespace is deprecated and will be removed in a future version.<br />The DGD Kubernetes namespace and DynamoGraphDeployment name are used to construct the Dynamo namespace for each component |  | Optional: \{\} <br /> |
| `globalDynamoNamespace` _boolean_ | GlobalDynamoNamespace indicates that the Component will be placed in the global Dynamo namespace |  |  |
| `resources` _[Resources](#resources)_ | Resources requested and limits for this component, including CPU, memory,<br />GPUs/devices, and any runtime-specific resources. |  |  |
| `autoscaling` _[Autoscaling](#autoscaling)_ | Deprecated: This field is deprecated and ignored. Use DynamoGraphDeploymentScalingAdapter<br />with HPA, KEDA, or Planner for autoscaling instead. See docs/kubernetes/autoscaling.md<br />for migration guidance. This field will be removed in a future API version. |  |  |
| `envs` _[EnvVar](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#envvar-v1-core) array_ | Envs defines additional environment variables to inject into the component containers. |  |  |
| `envFromSecret` _string_ | EnvFromSecret references a Secret whose key/value pairs will be exposed as<br />environment variables in the component containers. |  |  |
| `volumeMounts` _[VolumeMount](#volumemount) array_ | VolumeMounts references PVCs defined at the top level for volumes to be mounted by the component. |  |  |
| `ingress` _[IngressSpec](#ingressspec)_ | Ingress config to expose the component outside the cluster (or through a service mesh). |  |  |
| `modelRef` _[ModelReference](#modelreference)_ | ModelRef references a model that this component serves<br />When specified, a headless service will be created for endpoint discovery |  |  |
| `sharedMemory` _[SharedMemorySpec](#sharedmemoryspec)_ | SharedMemory controls the tmpfs mounted at /dev/shm (enable/disable and size). |  |  |
| `extraPodMetadata` _[ExtraPodMetadata](#extrapodmetadata)_ | ExtraPodMetadata adds labels/annotations to the created Pods. |  |  |
| `extraPodSpec` _[ExtraPodSpec](#extrapodspec)_ | ExtraPodSpec allows to override the main pod spec configuration.<br />It is a k8s standard PodSpec. It also contains a MainContainer (standard k8s Container) field<br />that allows overriding the main container configuration. |  |  |
| `livenessProbe` _[Probe](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#probe-v1-core)_ | LivenessProbe to detect and restart unhealthy containers. |  |  |
| `readinessProbe` _[Probe](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#probe-v1-core)_ | ReadinessProbe to signal when the container is ready to receive traffic. |  |  |
| `replicas` _integer_ | Replicas is the desired number of Pods for this component.<br />When scalingAdapter is enabled (default), this field is managed by the<br />DynamoGraphDeploymentScalingAdapter and should not be modified directly. |  | Minimum: 0 <br /> |
| `multinode` _[MultinodeSpec](#multinodespec)_ | Multinode is the configuration for multinode components. |  |  |
| `scalingAdapter` _[ScalingAdapter](#scalingadapter)_ | ScalingAdapter configures whether this service uses the DynamoGraphDeploymentScalingAdapter.<br />When enabled (default), replicas are managed via DGDSA and external autoscalers can scale<br />the service using the Scale subresource. When disabled, replicas can be modified directly. |  |  |


#### DynamoComponentDeploymentSpec



DynamoComponentDeploymentSpec defines the desired state of DynamoComponentDeployment



_Appears in:_
- [DynamoComponentDeployment](#dynamocomponentdeployment)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `backendFramework` _string_ | BackendFramework specifies the backend framework (e.g., "sglang", "vllm", "trtllm") |  | Enum: [sglang vllm trtllm] <br /> |
| `annotations` _object (keys:string, values:string)_ | Annotations to add to generated Kubernetes resources for this component<br />(such as Pod, Service, and Ingress when applicable). |  |  |
| `labels` _object (keys:string, values:string)_ | Labels to add to generated Kubernetes resources for this component. |  |  |
| `serviceName` _string_ | The name of the component |  |  |
| `componentType` _string_ | ComponentType indicates the role of this component (for example, "main"). |  |  |
| `subComponentType` _string_ | SubComponentType indicates the sub-role of this component (for example, "prefill"). |  |  |
| `dynamoNamespace` _string_ | DynamoNamespace is deprecated and will be removed in a future version.<br />The DGD Kubernetes namespace and DynamoGraphDeployment name are used to construct the Dynamo namespace for each component |  | Optional: \{\} <br /> |
| `globalDynamoNamespace` _boolean_ | GlobalDynamoNamespace indicates that the Component will be placed in the global Dynamo namespace |  |  |
| `resources` _[Resources](#resources)_ | Resources requested and limits for this component, including CPU, memory,<br />GPUs/devices, and any runtime-specific resources. |  |  |
| `autoscaling` _[Autoscaling](#autoscaling)_ | Deprecated: This field is deprecated and ignored. Use DynamoGraphDeploymentScalingAdapter<br />with HPA, KEDA, or Planner for autoscaling instead. See docs/kubernetes/autoscaling.md<br />for migration guidance. This field will be removed in a future API version. |  |  |
| `envs` _[EnvVar](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#envvar-v1-core) array_ | Envs defines additional environment variables to inject into the component containers. |  |  |
| `envFromSecret` _string_ | EnvFromSecret references a Secret whose key/value pairs will be exposed as<br />environment variables in the component containers. |  |  |
| `volumeMounts` _[VolumeMount](#volumemount) array_ | VolumeMounts references PVCs defined at the top level for volumes to be mounted by the component. |  |  |
| `ingress` _[IngressSpec](#ingressspec)_ | Ingress config to expose the component outside the cluster (or through a service mesh). |  |  |
| `modelRef` _[ModelReference](#modelreference)_ | ModelRef references a model that this component serves<br />When specified, a headless service will be created for endpoint discovery |  |  |
| `sharedMemory` _[SharedMemorySpec](#sharedmemoryspec)_ | SharedMemory controls the tmpfs mounted at /dev/shm (enable/disable and size). |  |  |
| `extraPodMetadata` _[ExtraPodMetadata](#extrapodmetadata)_ | ExtraPodMetadata adds labels/annotations to the created Pods. |  |  |
| `extraPodSpec` _[ExtraPodSpec](#extrapodspec)_ | ExtraPodSpec allows to override the main pod spec configuration.<br />It is a k8s standard PodSpec. It also contains a MainContainer (standard k8s Container) field<br />that allows overriding the main container configuration. |  |  |
| `livenessProbe` _[Probe](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#probe-v1-core)_ | LivenessProbe to detect and restart unhealthy containers. |  |  |
| `readinessProbe` _[Probe](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#probe-v1-core)_ | ReadinessProbe to signal when the container is ready to receive traffic. |  |  |
| `replicas` _integer_ | Replicas is the desired number of Pods for this component.<br />When scalingAdapter is enabled (default), this field is managed by the<br />DynamoGraphDeploymentScalingAdapter and should not be modified directly. |  | Minimum: 0 <br /> |
| `multinode` _[MultinodeSpec](#multinodespec)_ | Multinode is the configuration for multinode components. |  |  |
| `scalingAdapter` _[ScalingAdapter](#scalingadapter)_ | ScalingAdapter configures whether this service uses the DynamoGraphDeploymentScalingAdapter.<br />When enabled (default), replicas are managed via DGDSA and external autoscalers can scale<br />the service using the Scale subresource. When disabled, replicas can be modified directly. |  |  |


#### DynamoGraphDeployment



DynamoGraphDeployment is the Schema for the dynamographdeployments API.





| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `apiVersion` _string_ | `nvidia.com/v1alpha1` | | |
| `kind` _string_ | `DynamoGraphDeployment` | | |
| `metadata` _[ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#objectmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. |  |  |
| `spec` _[DynamoGraphDeploymentSpec](#dynamographdeploymentspec)_ | Spec defines the desired state for this graph deployment. |  |  |
| `status` _[DynamoGraphDeploymentStatus](#dynamographdeploymentstatus)_ | Status reflects the current observed state of this graph deployment. |  |  |


#### DynamoGraphDeploymentRequest



DynamoGraphDeploymentRequest is the Schema for the dynamographdeploymentrequests API.
It serves as the primary interface for users to request model deployments with
specific performance and resource constraints, enabling SLA-driven deployments.

Lifecycle:
 1. Initial → Pending: Validates spec and prepares for profiling
 2. Pending → Profiling: Creates and runs profiling job (online or AIC)
 3. Profiling → Ready/Deploying: Generates DGD spec after profiling completes
 4. Deploying → Ready: When autoApply=true, monitors DGD until Ready
 5. Ready: Terminal state when DGD is operational or spec is available
 6. DeploymentDeleted: Terminal state when auto-created DGD is manually deleted

The spec becomes immutable once profiling starts. Users must delete and recreate
the DGDR to modify configuration after this point.





| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `apiVersion` _string_ | `nvidia.com/v1alpha1` | | |
| `kind` _string_ | `DynamoGraphDeploymentRequest` | | |
| `metadata` _[ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#objectmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. |  |  |
| `spec` _[DynamoGraphDeploymentRequestSpec](#dynamographdeploymentrequestspec)_ | Spec defines the desired state for this deployment request. |  |  |
| `status` _[DynamoGraphDeploymentRequestStatus](#dynamographdeploymentrequeststatus)_ | Status reflects the current observed state of this deployment request. |  |  |


#### DynamoGraphDeploymentRequestSpec



DynamoGraphDeploymentRequestSpec defines the desired state of a DynamoGraphDeploymentRequest.
This CRD serves as the primary interface for users to request model deployments with
specific performance constraints and resource requirements, enabling SLA-driven deployments.



_Appears in:_
- [DynamoGraphDeploymentRequest](#dynamographdeploymentrequest)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `model` _string_ | Model specifies the model to deploy (e.g., "Qwen/Qwen3-0.6B", "meta-llama/Llama-3-70b").<br />This is a high-level identifier for easy reference in kubectl output and logs.<br />The controller automatically sets this value in profilingConfig.config.deployment.model. |  | Required: \{\} <br /> |
| `backend` _string_ | Backend specifies the inference backend for profiling.<br />The controller automatically sets this value in profilingConfig.config.engine.backend.<br />Profiling runs on real GPUs or via AIC simulation to collect performance data. |  | Enum: [vllm sglang trtllm] <br />Required: \{\} <br /> |
| `useMocker` _boolean_ | UseMocker indicates whether to deploy a mocker DynamoGraphDeployment instead of<br />a real backend deployment. When true, the deployment uses simulated engines that<br />don't require GPUs, using the profiling data to simulate realistic timing behavior.<br />Mocker is available in all backend images and useful for large-scale experiments.<br />Profiling still runs against the real backend (specified above) to collect performance data. | false |  |
| `enableGpuDiscovery` _boolean_ | EnableGpuDiscovery controls whether the profiler should automatically discover GPU<br />resources from the Kubernetes cluster nodes. When enabled, the profiler will override<br />any manually specified hardware configuration (min_num_gpus_per_engine, max_num_gpus_per_engine,<br />num_gpus_per_node) with values detected from the cluster.<br />Requires cluster-wide node access permissions - only available with cluster-scoped operators. | false | Optional: \{\} <br /> |
| `profilingConfig` _[ProfilingConfigSpec](#profilingconfigspec)_ | ProfilingConfig provides the complete configuration for the profiling job.<br />This configuration is passed directly to the profiler.<br />The structure matches the profile_sla config format exactly (see ProfilingConfigSpec for schema).<br />Note: deployment.model and engine.backend are automatically set from the high-level<br />modelName and backend fields and should not be specified in this config. |  | Required: \{\} <br /> |
| `autoApply` _boolean_ | AutoApply indicates whether to automatically create a DynamoGraphDeployment<br />after profiling completes. If false, only the spec is generated and stored in status.<br />Users can then manually create a DGD using the generated spec. | false |  |
| `deploymentOverrides` _[DeploymentOverridesSpec](#deploymentoverridesspec)_ | DeploymentOverrides allows customizing metadata for the auto-created DGD.<br />Only applicable when AutoApply is true. |  | Optional: \{\} <br /> |


#### DynamoGraphDeploymentRequestStatus



DynamoGraphDeploymentRequestStatus represents the observed state of a DynamoGraphDeploymentRequest.
The controller updates this status as the DGDR progresses through its lifecycle.



_Appears in:_
- [DynamoGraphDeploymentRequest](#dynamographdeploymentrequest)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `state` _string_ | State is a high-level textual status of the deployment request lifecycle.<br />Possible values: "", "Pending", "Profiling", "Deploying", "Ready", "DeploymentDeleted", "Failed"<br />Empty string ("") represents the initial state before initialization. |  |  |
| `backend` _string_ | Backend is extracted from profilingConfig.config.engine.backend for display purposes.<br />This field is populated by the controller and shown in kubectl output. |  | Optional: \{\} <br /> |
| `observedGeneration` _integer_ | ObservedGeneration reflects the generation of the most recently observed spec.<br />Used to detect spec changes and enforce immutability after profiling starts. |  |  |
| `conditions` _[Condition](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#condition-v1-meta) array_ | Conditions contains the latest observed conditions of the deployment request.<br />Standard condition types include: Validation, Profiling, SpecGenerated, DeploymentReady.<br />Conditions are merged by type on patch updates. |  |  |
| `profilingResults` _string_ | ProfilingResults contains a reference to the ConfigMap holding profiling data.<br />Format: "configmap/<name>" |  | Optional: \{\} <br /> |
| `generatedDeployment` _[RawExtension](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#rawextension-runtime-pkg)_ | GeneratedDeployment contains the full generated DynamoGraphDeployment specification<br />including metadata, based on profiling results. Users can extract this to create<br />a DGD manually, or it's used automatically when autoApply is true.<br />Stored as RawExtension to preserve all fields including metadata.<br />For mocker backends, this contains the mocker DGD spec. |  | EmbeddedResource: \{\} <br />Optional: \{\} <br /> |
| `deployment` _[DeploymentStatus](#deploymentstatus)_ | Deployment tracks the auto-created DGD when AutoApply is true.<br />Contains name, namespace, state, and creation status of the managed DGD. |  | Optional: \{\} <br /> |


#### DynamoGraphDeploymentScalingAdapter



DynamoGraphDeploymentScalingAdapter provides a scaling interface for individual services
within a DynamoGraphDeployment. It implements the Kubernetes scale
subresource, enabling integration with HPA, KEDA, and custom autoscalers.

The adapter acts as an intermediary between autoscalers and the DGD,
ensuring that only the adapter controller modifies the DGD's service replicas.
This prevents conflicts when multiple autoscaling mechanisms are in play.





| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `apiVersion` _string_ | `nvidia.com/v1alpha1` | | |
| `kind` _string_ | `DynamoGraphDeploymentScalingAdapter` | | |
| `metadata` _[ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#objectmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. |  |  |
| `spec` _[DynamoGraphDeploymentScalingAdapterSpec](#dynamographdeploymentscalingadapterspec)_ |  |  |  |
| `status` _[DynamoGraphDeploymentScalingAdapterStatus](#dynamographdeploymentscalingadapterstatus)_ |  |  |  |


#### DynamoGraphDeploymentScalingAdapterSpec



DynamoGraphDeploymentScalingAdapterSpec defines the desired state of DynamoGraphDeploymentScalingAdapter



_Appears in:_
- [DynamoGraphDeploymentScalingAdapter](#dynamographdeploymentscalingadapter)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `replicas` _integer_ | Replicas is the desired number of replicas for the target service.<br />This field is modified by external autoscalers (HPA/KEDA/Planner) or manually by users. |  | Minimum: 0 <br />Required: \{\} <br /> |
| `dgdRef` _[DynamoGraphDeploymentServiceRef](#dynamographdeploymentserviceref)_ | DGDRef references the DynamoGraphDeployment and the specific service to scale. |  | Required: \{\} <br /> |


#### DynamoGraphDeploymentScalingAdapterStatus



DynamoGraphDeploymentScalingAdapterStatus defines the observed state of DynamoGraphDeploymentScalingAdapter



_Appears in:_
- [DynamoGraphDeploymentScalingAdapter](#dynamographdeploymentscalingadapter)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `replicas` _integer_ | Replicas is the current number of replicas for the target service.<br />This is synced from the DGD's service replicas and is required for the scale subresource. |  |  |
| `selector` _string_ | Selector is a label selector string for the pods managed by this adapter.<br />Required for HPA compatibility via the scale subresource. |  |  |
| `lastScaleTime` _[Time](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#time-v1-meta)_ | LastScaleTime is the last time the adapter scaled the target service. |  |  |


#### DynamoGraphDeploymentServiceRef



DynamoGraphDeploymentServiceRef identifies a specific service within a DynamoGraphDeployment



_Appears in:_
- [DynamoGraphDeploymentScalingAdapterSpec](#dynamographdeploymentscalingadapterspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `name` _string_ | Name of the DynamoGraphDeployment |  | MinLength: 1 <br />Required: \{\} <br /> |
| `serviceName` _string_ | ServiceName is the key name of the service within the DGD's spec.services map to scale |  | MinLength: 1 <br />Required: \{\} <br /> |


#### DynamoGraphDeploymentSpec



DynamoGraphDeploymentSpec defines the desired state of DynamoGraphDeployment.



_Appears in:_
- [DynamoGraphDeployment](#dynamographdeployment)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `pvcs` _[PVC](#pvc) array_ | PVCs defines a list of persistent volume claims that can be referenced by components.<br />Each PVC must have a unique name that can be referenced in component specifications. |  | MaxItems: 100 <br />Optional: \{\} <br /> |
| `services` _object (keys:string, values:[DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec))_ | Services are the services to deploy as part of this deployment. |  | MaxProperties: 25 <br />Optional: \{\} <br /> |
| `envs` _[EnvVar](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#envvar-v1-core) array_ | Envs are environment variables applied to all services in the deployment unless<br />overridden by service-specific configuration. |  | Optional: \{\} <br /> |
| `backendFramework` _string_ | BackendFramework specifies the backend framework (e.g., "sglang", "vllm", "trtllm"). |  | Enum: [sglang vllm trtllm] <br /> |


#### DynamoGraphDeploymentStatus



DynamoGraphDeploymentStatus defines the observed state of DynamoGraphDeployment.



_Appears in:_
- [DynamoGraphDeployment](#dynamographdeployment)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `state` _string_ | State is a high-level textual status of the graph deployment lifecycle. |  |  |
| `conditions` _[Condition](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#condition-v1-meta) array_ | Conditions contains the latest observed conditions of the graph deployment.<br />The slice is merged by type on patch updates. |  |  |
| `services` _object (keys:string, values:[ServiceReplicaStatus](#servicereplicastatus))_ | Services contains per-service replica status information.<br />The map key is the service name from spec.services. |  |  |


#### DynamoModel



DynamoModel is the Schema for the dynamo models API





| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `apiVersion` _string_ | `nvidia.com/v1alpha1` | | |
| `kind` _string_ | `DynamoModel` | | |
| `metadata` _[ObjectMeta](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#objectmeta-v1-meta)_ | Refer to Kubernetes API documentation for fields of `metadata`. |  |  |
| `spec` _[DynamoModelSpec](#dynamomodelspec)_ |  |  |  |
| `status` _[DynamoModelStatus](#dynamomodelstatus)_ |  |  |  |


#### DynamoModelSpec



DynamoModelSpec defines the desired state of DynamoModel



_Appears in:_
- [DynamoModel](#dynamomodel)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `modelName` _string_ | ModelName is the full model identifier (e.g., "meta-llama/Llama-3.3-70B-Instruct-lora") |  | Required: \{\} <br /> |
| `baseModelName` _string_ | BaseModelName is the base model identifier that matches the service label<br />This is used to discover endpoints via headless services |  | Required: \{\} <br /> |
| `modelType` _string_ | ModelType specifies the type of model (e.g., "base", "lora", "adapter") | base | Enum: [base lora adapter] <br /> |
| `source` _[ModelSource](#modelsource)_ | Source specifies the model source location (only applicable for lora model type) |  |  |


#### DynamoModelStatus



DynamoModelStatus defines the observed state of DynamoModel



_Appears in:_
- [DynamoModel](#dynamomodel)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `endpoints` _[EndpointInfo](#endpointinfo) array_ | Endpoints is the current list of all endpoints for this model |  |  |
| `readyEndpoints` _integer_ | ReadyEndpoints is the count of endpoints that are ready |  |  |
| `totalEndpoints` _integer_ | TotalEndpoints is the total count of endpoints |  |  |
| `conditions` _[Condition](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#condition-v1-meta) array_ | Conditions represents the latest available observations of the model's state |  |  |


#### EndpointInfo



EndpointInfo represents a single endpoint (pod) serving the model



_Appears in:_
- [DynamoModelStatus](#dynamomodelstatus)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `address` _string_ | Address is the full address of the endpoint (e.g., "http://10.0.1.5:9090") |  |  |
| `podName` _string_ | PodName is the name of the pod serving this endpoint |  |  |
| `ready` _boolean_ | Ready indicates whether the endpoint is ready to serve traffic<br />For LoRA models: true if the POST /loras request succeeded with a 2xx status code<br />For base models: always false (no probing performed) |  |  |


#### ExtraPodMetadata







_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `annotations` _object (keys:string, values:string)_ |  |  |  |
| `labels` _object (keys:string, values:string)_ |  |  |  |


#### ExtraPodSpec







_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `mainContainer` _[Container](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#container-v1-core)_ |  |  |  |


#### IngressSpec







_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `enabled` _boolean_ | Enabled exposes the component through an ingress or virtual service when true. |  |  |
| `host` _string_ | Host is the base host name to route external traffic to this component. |  |  |
| `useVirtualService` _boolean_ | UseVirtualService indicates whether to configure a service-mesh VirtualService instead of a standard Ingress. |  |  |
| `virtualServiceGateway` _string_ | VirtualServiceGateway optionally specifies the gateway name to attach the VirtualService to. |  |  |
| `hostPrefix` _string_ | HostPrefix is an optional prefix added before the host. |  |  |
| `annotations` _object (keys:string, values:string)_ | Annotations to set on the generated Ingress/VirtualService resources. |  |  |
| `labels` _object (keys:string, values:string)_ | Labels to set on the generated Ingress/VirtualService resources. |  |  |
| `tls` _[IngressTLSSpec](#ingresstlsspec)_ | TLS holds the TLS configuration used by the Ingress/VirtualService. |  |  |
| `hostSuffix` _string_ | HostSuffix is an optional suffix appended after the host. |  |  |
| `ingressControllerClassName` _string_ | IngressControllerClassName selects the ingress controller class (e.g., "nginx"). |  |  |


#### IngressTLSSpec







_Appears in:_
- [IngressSpec](#ingressspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `secretName` _string_ | SecretName is the name of a Kubernetes Secret containing the TLS certificate and key. |  |  |




#### ModelReference



ModelReference identifies a model served by this component



_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `name` _string_ | Name is the base model identifier (e.g., "llama-3-70b-instruct-v1") |  | Required: \{\} <br /> |
| `revision` _string_ | Revision is the model revision/version (optional) |  |  |


#### ModelSource



ModelSource defines the source location of a model



_Appears in:_
- [DynamoModelSpec](#dynamomodelspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `uri` _string_ | URI is the model source URI<br />Supported formats:<br />- S3: s3://bucket/path/to/model<br />- HuggingFace: hf://org/model@revision_sha |  | Required: \{\} <br /> |


#### MultinodeSpec







_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `nodeCount` _integer_ | Indicates the number of nodes to deploy for multinode components.<br />Total number of GPUs is NumberOfNodes * GPU limit.<br />Must be greater than 1. | 2 | Minimum: 2 <br /> |


#### PVC







_Appears in:_
- [DynamoGraphDeploymentSpec](#dynamographdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `create` _boolean_ | Create indicates to create a new PVC |  |  |
| `name` _string_ | Name is the name of the PVC |  | Required: \{\} <br /> |
| `storageClass` _string_ | StorageClass to be used for PVC creation. Required when create is true. |  |  |
| `size` _[Quantity](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#quantity-resource-api)_ | Size of the volume in Gi, used during PVC creation. Required when create is true. |  |  |
| `volumeAccessMode` _[PersistentVolumeAccessMode](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#persistentvolumeaccessmode-v1-core)_ | VolumeAccessMode is the volume access mode of the PVC. Required when create is true. |  |  |


#### ProfilingConfigSpec



ProfilingConfigSpec defines configuration for the profiling process.
This structure maps directly to the profile_sla.py config format.
See benchmarks/profiler/utils/profiler_argparse.py for the complete schema.



_Appears in:_
- [DynamoGraphDeploymentRequestSpec](#dynamographdeploymentrequestspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `config` _[JSON](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#json-v1-apiextensions-k8s-io)_ | Config is the profiling configuration as arbitrary JSON/YAML. This will be passed directly to the profiler.<br />The profiler will validate the configuration and report any errors. |  | Optional: \{\} <br />Type: object <br /> |
| `configMapRef` _[ConfigMapKeySelector](#configmapkeyselector)_ | ConfigMapRef is an optional reference to a ConfigMap containing the DynamoGraphDeployment<br />base config file (disagg.yaml). This is separate from the profiling config above.<br />The path to this config will be set as engine.config in the profiling config. |  | Optional: \{\} <br /> |
| `profilerImage` _string_ | ProfilerImage specifies the container image to use for profiling jobs.<br />This image contains the profiler code and dependencies needed for SLA-based profiling.<br />Example: "nvcr.io/nvidia/ai-dynamo/vllm-runtime:0.6.1" |  | Required: \{\} <br /> |
| `outputPVC` _string_ | OutputPVC is an optional PersistentVolumeClaim name for storing profiling output.<br />If specified, all profiling artifacts (logs, plots, configs, raw data) will be written<br />to this PVC instead of an ephemeral emptyDir volume. This allows users to access<br />complete profiling results after the job completes by mounting the PVC.<br />The PVC must exist in the same namespace as the DGDR.<br />If not specified, profiling uses emptyDir and only essential data is saved to ConfigMaps.<br />Note: ConfigMaps are still created regardless of this setting for planner integration. |  | Optional: \{\} <br /> |
| `resources` _[ResourceRequirements](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#resourcerequirements-v1-core)_ | Resources specifies the compute resource requirements for the profiling job container.<br />If not specified, no resource requests or limits are set. |  | Optional: \{\} <br /> |
| `tolerations` _[Toleration](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#toleration-v1-core) array_ | Tolerations allows the profiling job to be scheduled on nodes with matching taints.<br />For example, to schedule on GPU nodes, add a toleration for the nvidia.com/gpu taint. |  | Optional: \{\} <br /> |


#### ResourceItem







_Appears in:_
- [Resources](#resources)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `cpu` _string_ | CPU specifies the CPU resource request/limit (e.g., "1000m", "2") |  |  |
| `memory` _string_ | Memory specifies the memory resource request/limit (e.g., "4Gi", "8Gi") |  |  |
| `gpu` _string_ | GPU indicates the number of GPUs to request.<br />Total number of GPUs is NumberOfNodes * GPU in case of multinode deployment. |  |  |
| `gpuType` _string_ | GPUType can specify a custom GPU type, e.g. "gpu.intel.com/xe"<br />By default if not specified, the GPU type is "nvidia.com/gpu" |  |  |
| `custom` _object (keys:string, values:string)_ | Custom specifies additional custom resource requests/limits |  |  |


#### Resources



Resources defines requested and limits for a component, including CPU, memory,
GPUs/devices, and any runtime-specific resources.



_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `requests` _[ResourceItem](#resourceitem)_ | Requests specifies the minimum resources required by the component |  |  |
| `limits` _[ResourceItem](#resourceitem)_ | Limits specifies the maximum resources allowed for the component |  |  |
| `claims` _[ResourceClaim](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#resourceclaim-v1-core) array_ | Claims specifies resource claims for dynamic resource allocation |  |  |


#### ScalingAdapter



ScalingAdapter configures whether a service uses the DynamoGraphDeploymentScalingAdapter
for replica management. When enabled (default), the DGDSA owns the replicas field and
external autoscalers (HPA, KEDA, Planner) can control scaling via the Scale subresource.



_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `disable` _boolean_ | Disable indicates whether the ScalingAdapter should be disabled for this service.<br />When false (default), a DGDSA is created and owns the replicas field.<br />When true, no DGDSA is created and replicas can be modified directly in the DGD. | false |  |


#### ServiceReplicaStatus



ServiceReplicaStatus contains replica information for a single service.



_Appears in:_
- [DynamoGraphDeploymentStatus](#dynamographdeploymentstatus)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `componentKind` _[ComponentKind](#componentkind)_ | ComponentKind is the underlying resource kind (e.g., "PodClique", "PodCliqueScalingGroup", "Deployment", "LeaderWorkerSet"). |  | Enum: [PodClique PodCliqueScalingGroup Deployment LeaderWorkerSet] <br /> |
| `componentName` _string_ | ComponentName is the name of the underlying resource. |  |  |
| `replicas` _integer_ | Replicas is the total number of non-terminated replicas.<br />Required for all component kinds. |  | Minimum: 0 <br /> |
| `updatedReplicas` _integer_ | UpdatedReplicas is the number of replicas at the current/desired revision.<br />Required for all component kinds. |  | Minimum: 0 <br /> |
| `readyReplicas` _integer_ | ReadyReplicas is the number of ready replicas.<br />Populated for PodClique, Deployment, and LeaderWorkerSet.<br />Not available for PodCliqueScalingGroup.<br />When nil, the field is omitted from the API response. |  | Minimum: 0 <br /> |
| `availableReplicas` _integer_ | AvailableReplicas is the number of available replicas.<br />For Deployment: replicas ready for >= minReadySeconds.<br />For PodCliqueScalingGroup: replicas where all constituent PodCliques have >= MinAvailable ready pods.<br />Not available for PodClique or LeaderWorkerSet.<br />When nil, the field is omitted from the API response. |  | Minimum: 0 <br /> |


#### SharedMemorySpec







_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `disabled` _boolean_ |  |  |  |
| `size` _[Quantity](https://kubernetes.io/docs/reference/generated/kubernetes-api/v1.28/#quantity-resource-api)_ |  |  |  |


#### VolumeMount



VolumeMount references a PVC defined at the top level for volumes to be mounted by the component



_Appears in:_
- [DynamoComponentDeploymentSharedSpec](#dynamocomponentdeploymentsharedspec)
- [DynamoComponentDeploymentSpec](#dynamocomponentdeploymentspec)

| Field | Description | Default | Validation |
| --- | --- | --- | --- |
| `name` _string_ | Name references a PVC name defined in the top-level PVCs map |  | Required: \{\} <br /> |
| `mountPoint` _string_ | MountPoint specifies where to mount the volume.<br />If useAsCompilationCache is true and mountPoint is not specified,<br />a backend-specific default will be used. |  |  |
| `useAsCompilationCache` _boolean_ | UseAsCompilationCache indicates this volume should be used as a compilation cache.<br />When true, backend-specific environment variables will be set and default mount points may be used. | false |  |


# Operator Default Values Injection

The Dynamo operator automatically applies default values to various fields when they are not explicitly specified in your deployments. These defaults include:

- **Health Probes**: Startup, liveness, and readiness probes are configured differently for frontend, worker, and planner components. For example, worker components receive a startup probe with a 2-hour timeout (720 failures × 10 seconds) to accommodate long model loading times.

- **Security Context**: All components receive `fsGroup: 1000` by default to ensure proper file permissions for mounted volumes. This can be overridden via the `extraPodSpec.securityContext` field.

- **Shared Memory**: All components receive an 8Gi shared memory volume mounted at `/dev/shm` by default (can be disabled or resized via the `sharedMemory` field).

- **Environment Variables**: Components automatically receive environment variables like `DYN_NAMESPACE`, `DYN_PARENT_DGD_K8S_NAME`, `DYNAMO_PORT`, and backend-specific variables.

- **Pod Configuration**: Default `terminationGracePeriodSeconds` of 60 seconds and `restartPolicy: Always`.

- **Autoscaling**: When enabled without explicit metrics, defaults to CPU-based autoscaling with 80% target utilization.

- **Backend-Specific Behavior**: For multinode deployments, probes are automatically modified or removed for worker nodes depending on the backend framework (VLLM, SGLang, or TensorRT-LLM).

## Pod Specification Defaults

All components receive the following pod-level defaults unless overridden:

- **`terminationGracePeriodSeconds`**: `60` seconds
- **`restartPolicy`**: `Always`

## Security Context

The operator automatically applies default security context settings to all components to ensure proper file permissions, particularly for mounted volumes:

- **`fsGroup`**: `1000` - Sets the group ownership of mounted volumes and any files created in those volumes

This default ensures that non-root containers can write to mounted volumes (like model caches or persistent storage) without permission issues. The `fsGroup` setting is particularly important for:
- Model downloads and caching
- Compilation cache directories
- Persistent volume claims (PVCs)
- SSH key generation in multinode deployments

### Overriding Security Context

To override the default security context, specify your own `securityContext` in the `extraPodSpec` of your component:

```yaml
services:
  YourWorker:
    extraPodSpec:
      securityContext:
        fsGroup: 2000  # Custom group ID
        runAsUser: 1000
        runAsGroup: 1000
        runAsNonRoot: true
```

**Important**: When you provide *any* `securityContext` object in `extraPodSpec`, the operator will not inject any defaults. This gives you complete control over the security context, including the ability to run as root (by omitting `runAsNonRoot` or setting it to `false`).

### OpenShift and Security Context Constraints

In OpenShift environments with Security Context Constraints (SCCs), you may need to omit explicit UID/GID values to allow OpenShift's admission controllers to assign them dynamically:

```yaml
services:
  YourWorker:
    extraPodSpec:
      securityContext:
        # Omit fsGroup to let OpenShift assign it based on SCC
        # OpenShift will inject the appropriate UID range
```

Alternatively, if you want to keep the default `fsGroup: 1000` behavior and are certain your cluster allows it, you don't need to specify anything - the operator defaults will work.

## Shared Memory Configuration

Shared memory is enabled by default for all components:

- **Enabled**: `true` (unless explicitly disabled via `sharedMemory.disabled`)
- **Size**: `8Gi`
- **Mount Path**: `/dev/shm`
- **Volume Type**: `emptyDir` with `memory` medium

To disable shared memory or customize the size, use the `sharedMemory` field in your component specification.

## Health Probes by Component Type

The operator applies different default health probes based on the component type.

### Frontend Components

Frontend components receive the following probe configurations:

**Liveness Probe:**
- **Type**: HTTP GET
- **Path**: `/health`
- **Port**: `http` (8000)
- **Initial Delay**: 60 seconds
- **Period**: 60 seconds
- **Timeout**: 30 seconds
- **Failure Threshold**: 10

**Readiness Probe:**
- **Type**: Exec command
- **Command**: `curl -s http://localhost:${DYNAMO_PORT}/health | jq -e ".status == \"healthy\""`
- **Initial Delay**: 60 seconds
- **Period**: 60 seconds
- **Timeout**: 30 seconds
- **Failure Threshold**: 10

### Worker Components

Worker components receive the following probe configurations:

**Liveness Probe:**
- **Type**: HTTP GET
- **Path**: `/live`
- **Port**: `system` (9090)
- **Period**: 5 seconds
- **Timeout**: 30 seconds
- **Failure Threshold**: 1

**Readiness Probe:**
- **Type**: HTTP GET
- **Path**: `/health`
- **Port**: `system` (9090)
- **Period**: 10 seconds
- **Timeout**: 30 seconds
- **Failure Threshold**: 60

**Startup Probe:**
- **Type**: HTTP GET
- **Path**: `/live`
- **Port**: `system` (9090)
- **Period**: 10 seconds
- **Timeout**: 5 seconds
- **Failure Threshold**: 720 (allows up to 2 hours for startup: 10s × 720 = 7200s)

:::{note}
For larger models (typically >70B parameters) or slower storage systems, you may need to increase the `failureThreshold` to allow more time for model loading. Calculate the required threshold based on your expected startup time: `failureThreshold = (expected_startup_seconds / period)`. Override the startup probe in your component specification if the default 2-hour window is insufficient.
:::

### Multinode Deployment Probe Modifications

For multinode deployments, the operator modifies probes based on the backend framework and node role:

#### VLLM Backend

The operator automatically selects between two deployment modes based on parallelism configuration:

**Ray-Based Mode** (when `world_size > GPUs_per_node`):
- **Worker nodes**: All probes (liveness, readiness, startup) are removed
- **Leader nodes**: All probes remain active

**Data Parallel Mode** (when `world_size × data_parallel_size > GPUs_per_node`):
- **Worker nodes**: All probes (liveness, readiness, startup) are removed
- **Leader nodes**: All probes remain active

#### SGLang Backend
- **Worker nodes**: All probes (liveness, readiness, startup) are removed

#### TensorRT-LLM Backend
- **Leader nodes**: All probes remain unchanged
- **Worker nodes**:
  - Liveness and startup probes are removed
  - Readiness probe is replaced with a TCP socket check on SSH port (2222):
    - **Initial Delay**: 20 seconds
    - **Period**: 20 seconds
    - **Timeout**: 5 seconds
    - **Failure Threshold**: 10

## Environment Variables

The operator automatically injects environment variables based on component type and configuration:

### All Components

- **`DYN_NAMESPACE`**: The Dynamo namespace for the component
- **`DYN_PARENT_DGD_K8S_NAME`**: The parent DynamoGraphDeployment Kubernetes resource name
- **`DYN_PARENT_DGD_K8S_NAMESPACE`**: The parent DynamoGraphDeployment Kubernetes namespace

### Frontend Components

- **`DYNAMO_PORT`**: `8000`
- **`DYN_HTTP_PORT`**: `8000`

### Worker Components

- **`DYN_SYSTEM_PORT`**: `9090` (automatically enables the system metrics server)
- **`DYN_SYSTEM_USE_ENDPOINT_HEALTH_STATUS`**: `["generate"]`
- **`DYN_SYSTEM_ENABLED`**: `true` (needed for runtime images 0.6.1 and older)

### Planner Components

- **`PLANNER_PROMETHEUS_PORT`**: `9085`

### VLLM Backend (with compilation cache)

When a volume mount is configured with `useAsCompilationCache: true`:
- **`VLLM_CACHE_ROOT`**: Set to the mount point of the cache volume

## Service Account

Planner components automatically receive the following service account:

- **`serviceAccountName`**: `planner-serviceaccount`

## Image Pull Secrets

The operator automatically discovers and injects image pull secrets for container images. When a component specifies a container image, the operator:

1. Scans all Kubernetes secrets of type `kubernetes.io/dockerconfigjson` in the component's namespace
2. Extracts the docker registry server URLs from each secret's authentication configuration
3. Matches the container image's registry host against the discovered registry URLs
4. Automatically injects matching secrets as `imagePullSecrets` in the pod specification

This eliminates the need to manually specify image pull secrets for each component. The operator maintains an internal index of docker secrets and their associated registries, refreshing this index periodically.

**To disable automatic image pull secret discovery** for a specific component, add the following annotation:

```yaml
annotations:
  nvidia.com/disable-image-pull-secret-discovery: "true"
```

## Autoscaling Defaults

When autoscaling is enabled but no metrics are specified, the operator applies:

- **Default Metric**: CPU utilization
- **Target Average Utilization**: `80%`

## Port Configurations

Default container ports are configured based on component type:

### Frontend Components
- **Port**: 8000
- **Protocol**: TCP
- **Name**: `http`

### Worker Components
- **Port**: 9090
- **Protocol**: TCP
- **Name**: `system`

### Planner Components
- **Port**: 9085
- **Protocol**: TCP
- **Name**: `metrics`

## Backend-Specific Configurations

### VLLM
- **Ray Head Port**: 6379 (for Ray-based multinode deployments)
- **Data Parallel RPC Port**: 13445 (for data parallel multinode deployments)

### SGLang
- **Distribution Init Port**: 29500 (for multinode deployments)

### TensorRT-LLM
- **SSH Port**: 2222 (for multinode MPI communication)
- **OpenMPI Environment**: `OMPI_MCA_orte_keep_fqdn_hostnames=1`

## Implementation Reference

For users who want to understand the implementation details or contribute to the operator, the default values described in this document are set in the following source files:

- **Health Probes, Security Context & Pod Specifications**: [`internal/dynamo/graph.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/graph.go) - Contains the main logic for applying default probes, security context, environment variables, shared memory, and pod configurations
- **Component-Specific Defaults**:
  - [`internal/dynamo/component_frontend.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/component_frontend.go)
  - [`internal/dynamo/component_worker.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/component_worker.go)
  - [`internal/dynamo/component_planner.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/component_planner.go)
- **Image Pull Secrets**: [`internal/secrets/docker.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/secrets/docker.go) - Implements the docker secret indexer and automatic discovery
- **Backend-Specific Behavior**:
  - [`internal/dynamo/backend_vllm.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/backend_vllm.go)
  - [`internal/dynamo/backend_sglang.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/backend_sglang.go)
  - [`internal/dynamo/backend_trtllm.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/dynamo/backend_trtllm.go)
- **Constants & Annotations**: [`internal/consts/consts.go`](https://github.com/ai-dynamo/dynamo/blob/main/deploy/cloud/operator/internal/consts/consts.go) - Defines annotation keys and other constants

## Notes

- All these defaults can be overridden by explicitly specifying values in your DynamoComponentDeployment or DynamoGraphDeployment resources
- User-specified probes (via `livenessProbe`, `readinessProbe`, or `startupProbe` fields) take precedence over operator defaults
- For security context, if you provide *any* `securityContext` in `extraPodSpec`, no defaults will be injected, giving you full control
- For multinode deployments, some defaults are modified or removed as described above to accommodate distributed execution patterns
- The `extraPodSpec.mainContainer` field can be used to override probe configurations set by the operator