TensorFlow Serving

If you have a trained Tensorflow model you can deploy this directly via REST or gRPC servers.

MNIST Example

REST MNIST Example

For REST you need to specify parameters for:

• signature_name

• model_name

apiVersion: machinelearning.seldon.io/v1alpha2
kind: SeldonDeployment
metadata:
  name: tfserving
spec:
  name: mnist
  predictors:
  - graph:
      children: []
      implementation: TENSORFLOW_SERVER
      modelUri: gs://seldon-models/tfserving/mnist-model
      name: mnist-model
      parameters:
        - name: signature_name
          type: STRING
          value: predict_images
        - name: model_name
          type: STRING
          value: mnist-model
    name: default
    replicas: 1

gRPC MNIST Example

For gRPC you need to specify the following parameters:

• signature_name

• model_name

• model_input

• model_output

apiVersion: machinelearning.seldon.io/v1alpha2
kind: SeldonDeployment
metadata:
  name: tfserving
spec:
  name: mnist
  predictors:
  - graph:
      children: []
      implementation: TENSORFLOW_SERVER
      modelUri: gs://seldon-models/tfserving/mnist-model
      name: mnist-model
      endpoint:
        type: GRPC
      parameters:
        - name: signature_name
          type: STRING
          value: predict_images
        - name: model_name
          type: STRING
          value: mnist-model
        - name: model_input
          type: STRING
          value: images
        - name: model_output
          type: STRING
          value: scores          
    name: default
    replicas: 1

Try out a worked notebook

Multi-Model Serving

You can utilize Tensorflow Serving's functionality to load multiple models from one model repository as shown in this example notebook. You should follow the configuration details as disucussed in the Tensorflow Serving documentation on advanced configuration.

apiVersion: machinelearning.seldon.io/v1
kind: SeldonDeployment
metadata:
  name: example-tfserving
spec:
  protocol: tensorflow
  predictors:
  - componentSpecs:
    - spec:
        containers:
        - args: 
          - --port=8500
          - --rest_api_port=8501
          - --model_config_file=/mnt/models/models.config
          image: tensorflow/serving
          name: multi
          ports:
          - containerPort: 8501
            name: http
            protocol: TCP
          - containerPort: 8500
            name: grpc
            protocol: TCP
    graph:
      name: multi
      type: MODEL
      implementation: TENSORFLOW_SERVER
      modelUri: gs://seldon-models/tfserving/multi-model
      endpoint:
        httpPort: 8501
        grpcPort: 8500
    name: model
    replicas: 1