import uvicorn

app = FastAPI()


@app.get("/items/{item_id}")

def read_root(item_id: str, request: Request):

    client_host = request.client.host
    f= open("ipadress.txt","a+")
    f.write(client_host+"\n")
    f.close()

    return {"client_host": client_host, "item_id": item_id}


if __name__ == "__main__":
    uvicorn.run(app, host="0.0.0.0", forwarded_allow_ips="*")

The above is the python code which is hosted using uvicorn. When I run the code inside a docker container, it returns the correct client IP. But, when I host the same code on Kubernetes cluster using minikube the IP address which is returned is the localhost IP (127.0.0.1)

The docker command used to run the above code image is docker run -it -p 8080:8000 <image-name> I have exposed port 8080 to reach to the service from Virtual Machine

The kubernetes command used to expose the service is kubectl port-forward --address 0.0.0.0 services/sample-deploy 8080:80

The service.yaml for kubernetes is

apiVersion: v1
kind: Service
metadata:
  name: sample-deploy
spec:
  type: LoadBalancer
  ports:
  - port: 80
  selector:
    app: sample-deploy

I also tried to access the service using LoadBalancer where the service can be accessed using an External IP yet I am not able to get the real client IP address. I think the IP address is masked in the kubernetes cluster.