Set Up Your Environment
- Ensure you have a functional Kubernetes cluster. This could be a local setup via Minikube or a cloud-based service like Google Kubernetes Engine, AWS EKS, or Azure AKS.
- Install the Kubernetes command-line tool,
kubectl
, and ensure it's configured to interact with your cluster.
- Verify your SAP Cloud Platform account and obtain necessary credentials for SAP Leonardo.
Install SAP Leonardo IoT SDK
- Obtain the SAP Leonardo IoT SDK from the SAP Cloud Platform SDK as a prerequisite. Follow the official SAP documentation for installation instructions.
- On your local machine, ensure that the SDK is operational by running basic commands as described in the SDK documentation.
Create a Docker Image for Your Application
- Write a Dockerfile for your application that uses the SAP Leonardo IoT SDK. Below is an example Dockerfile:
# Use the official Java image as a parent image
FROM openjdk:8-jdk-alpine
# Set the working directory in the container to /app
WORKDIR /app
# Copy the current directory contents into the container at /app
COPY . .
# Run the application
CMD ["java", "-jar", "your-app.jar"]
- Build the Docker image using the Docker CLI:
docker build -t your-app-image .
Deploy Application to Kubernetes
- Create a Kubernetes deployment YAML file for your application. Ensure you define the container and image details.
- Example Kubernetes deployment YAML:
apiVersion: apps/v1
kind: Deployment
metadata:
name: sap-leonardo-app
spec:
replicas: 3
selector:
matchLabels:
app: sap-leonardo-app
template:
metadata:
labels:
app: sap-leonardo-app
spec:
containers:
- name: sap-leonardo-container
image: your-app-image
ports:
- containerPort: 8080
- Apply the deployment to your Kubernetes cluster:
kubectl apply -f deployment.yaml
Configure SAP Leonardo Connectivity
- Within your application, use the SAP Leonardo IoT SDK to connect to SAP services. This will include setting up credentials, endpoints, and any necessary data models.
- Make sure to set environment variables within your Docker container or use Kubernetes Secrets to manage sensitive configurations.
Expose Your Application
- Set up a Kubernetes Service to expose your application. This could be a LoadBalancer service for external access or a ClusterIP for internal access.
- Example Service YAML:
apiVersion: v1
kind: Service
metadata:
name: sap-leonardo-service
spec:
type: LoadBalancer
ports:
- port: 80
targetPort: 8080
selector:
app: sap-leonardo-app
kubectl apply -f service.yaml
Monitor and Scale
- Use Kubernetes' monitoring tools and logs to ensure the application is running smoothly.
- Scale the deployment if needed using the following command:
kubectl scale deployment sap-leonardo-app --replicas=5
Feedback and Iteration
- Regularly check the performance and connectivity between the Kubernetes-hosted application and SAP Leonardo.
- Iterate on configurations and deployment settings to optimize resource usage and application performance.