Usage

Ensure your Diabetes_Scoring.py script returns a computer readable value

The original demo scripts returns a human readable value, i.e.

print("Chances of having diabetes: " + str(pred) + "%")

This application expects a computer readable value, i.e.

print(str(pred))

See ./Diabetes_Scoring.py

Deploying app on BlueData

• Provision a Centos 7 cluster
• ssh into the centos cluster as an admin user and run:

# !!! Change these to reflect your environment !!!

export BLUEDATA_MLOPS_URI=http://deployment_host:deployment_port/model_name/model_version/predict
export BLUEDATA_MLOPS_XAUTHTOKEN=your_token

then in the same ssh session, run the following on the centos cluster:

sudo yum -y install java-1.8.0-openjdk
sudo wget -O /home/bluedata/db-demo-app-exec.jar https://github.com/snowch/diabetes_prediction_demo/releases/latest/download/db-demo-app-exec.jar

# Create a system service to automatically restart the service on failure
sudo bash -c "cat >/etc/systemd/system/db-demo-app.service" <<EOF
[Unit]
Description=Diabetes Demo App
After=network.target

[Service]
Type=simple
Restart=always
RestartSec=1
User=bluedata
ExecStart=/usr/bin/java -Dbluedata.mlops.uri=$BLUEDATA_MLOPS_URI -Dbluedata.mlops.xauthtoken=$BLUEDATA_MLOPS_XAUTHTOKEN -jar /home/bluedata/db-demo-app-exec.jar

[Install]
WantedBy=multi-user.target
EOF

sudo systemctl start db-demo-app
sudo systemctl enable db-demo-app
sudo systemctl restart db-demo-app

You can check the webapp service status:

sleep 10                           # wait for service to start
curl http://localhost:8080/health  # should return {"status":"UP" ...}

On the BlueData Centos 7 cluster screen, click Add a cluster service:

• Service ID: 1
• Exported Service: webapp
• Service Name: webapp
• Service Description: webapp
• Port: 8080

Then hit Submit

You can now access the Diabetes Prediction Demo app using the BlueData gateway host and port.

Deploying app on Docker

• See instructions at: https://hub.docker.com/repository/docker/snowch/db-demo