ใช้ TensorFlow Serving กับ Kubernetes

rm -rf /tmp/resnet

# Download Resnet model from TF Hub
wget https://tfhub.dev/tensorflow/resnet_50/classification/1?tf-hub-format=compressed -o resnet.tar.gz

# Extract SavedModel into a versioned subfolder ‘123’
mkdir -p /tmp/resnet/123
tar xvfz resnet.tar.gz -C /tmp/resnet/123/

$ ls /tmp/resnet/*
saved_model.pb  variables

docker run -d --name serving_base tensorflow/serving

docker cp /tmp/resnet serving_base:/models/resnet

docker commit --change "ENV MODEL_NAME resnet" serving_base \
  $USER/resnet_serving

docker kill serving_base
docker rm serving_base

docker run -p 8500:8500 -t $USER/resnet_serving &

git clone https://github.com/tensorflow/serving
cd serving

tools/run_in_docker.sh python tensorflow_serving/example/resnet_client_grpc.py

outputs {
  key: "classes"
  value {
    dtype: DT_INT64
    tensor_shape {
      dim {
        size: 1
      }
    }
    int64_val: 286
  }
}
outputs {
  key: "probabilities"
  value {
    dtype: DT_FLOAT
    tensor_shape {
      dim {
        size: 1
      }
      dim {
        size: 1001
      }
    }
    float_val: 2.41628322328e-06
    float_val: 1.90121829746e-06
    float_val: 2.72477100225e-05
    float_val: 4.42638565801e-07
    float_val: 8.98362372936e-07
    float_val: 6.84421956976e-06
    float_val: 1.66555237229e-05
...
    float_val: 1.59407863976e-06
    float_val: 1.2315689446e-06
    float_val: 1.17812135159e-06
    float_val: 1.46365800902e-05
    float_val: 5.81210713335e-07
    float_val: 6.59980651108e-05
    float_val: 0.00129527016543
  }
}
model_spec {
  name: "resnet"
  version {
    value: 123
  }
  signature_name: "serving_default"
}

gcloud auth login --project tensorflow-serving

$ gcloud container clusters create resnet-serving-cluster --num-nodes 5

Creating cluster resnet-serving-cluster...done.
Created [https://container.googleapis.com/v1/projects/tensorflow-serving/zones/us-central1-f/clusters/resnet-serving-cluster].
kubeconfig entry generated for resnet-serving-cluster.
NAME                       ZONE           MASTER_VERSION  MASTER_IP        MACHINE_TYPE   NODE_VERSION  NUM_NODES  STATUS
resnet-serving-cluster  us-central1-f  1.1.8           104.197.163.119  n1-standard-1  1.1.8         5          RUNNING

gcloud config set container/cluster resnet-serving-cluster
gcloud container clusters get-credentials resnet-serving-cluster

Fetching cluster endpoint and auth data.
kubeconfig entry generated for resnet-serving-cluster.

docker tag $USER/resnet_serving gcr.io/tensorflow-serving/resnet

gcloud auth configure-docker

docker push gcr.io/tensorflow-serving/resnet

kubectl create -f tensorflow_serving/example/resnet_k8s.yaml

deployment "resnet-deployment" created
service "resnet-service" created

$ kubectl get deployments
NAME                    DESIRED   CURRENT   UP-TO-DATE   AVAILABLE   AGE
resnet-deployment    3         3         3            3           5s

$ kubectl get pods
NAME                         READY     STATUS    RESTARTS   AGE
resnet-deployment-bbcbc   1/1       Running   0          10s
resnet-deployment-cj6l2   1/1       Running   0          10s
resnet-deployment-t1uep   1/1       Running   0          10s

$ kubectl get services
NAME                    CLUSTER-IP       EXTERNAL-IP       PORT(S)     AGE
resnet-service       10.239.240.227   104.155.184.157   8500/TCP    1m

$ kubectl describe service resnet-service
Name:           resnet-service
Namespace:      default
Labels:         run=resnet-service
Selector:       run=resnet-service
Type:           LoadBalancer
IP:         10.239.240.227
LoadBalancer Ingress:   104.155.184.157
Port:           <unset> 8500/TCP
NodePort:       <unset> 30334/TCP
Endpoints:      <none>
Session Affinity:   None
Events:
  FirstSeen LastSeen    Count   From            SubobjectPath   Type        Reason      Message
  --------- --------    -----   ----            -------------   --------    ------      -------
  1m        1m      1   {service-controller }           Normal      CreatingLoadBalancer    Creating load balancer
  1m        1m      1   {service-controller }           Normal      CreatedLoadBalancer Created load balancer

$ tools/run_in_docker.sh python \
  tensorflow_serving/example/resnet_client_grpc.py \
  --server=104.155.184.157:8500
outputs {
  key: "classes"
  value {
    dtype: DT_INT64
    tensor_shape {
      dim {
        size: 1
      }
    }
    int64_val: 286
  }
}
outputs {
  key: "probabilities"
  value {
    dtype: DT_FLOAT
    tensor_shape {
      dim {
        size: 1
      }
      dim {
        size: 1001
      }
    }
    float_val: 2.41628322328e-06
    float_val: 1.90121829746e-06
    float_val: 2.72477100225e-05
    float_val: 4.42638565801e-07
    float_val: 8.98362372936e-07
    float_val: 6.84421956976e-06
    float_val: 1.66555237229e-05
...
    float_val: 1.59407863976e-06
    float_val: 1.2315689446e-06
    float_val: 1.17812135159e-06
    float_val: 1.46365800902e-05
    float_val: 5.81210713335e-07
    float_val: 6.59980651108e-05
    float_val: 0.00129527016543
  }
}
model_spec {
  name: "resnet"
  version {
    value: 1538687457
  }
  signature_name: "serving_default"
}