Expose port on host machine problem

[another-tee]

I'm trying to create an API for model inference using Flask and Gunicorn. However, when I attempt to access it via localhost:31111, the connection is refused.

In my app.py, I've set up a health check endpoint at "/" to ensure the application is running correctly. Here's a snippet of the code:

This Flask application is configured to run on port 5000 inside the container, as specified in my Dockerfile and Kubernetes deployment configuration. Additionally, I'm using Gunicorn to serve the application within the container. Here's how I'm running it in my Dockerfile:

Now, for Kubernetes deployment and service configuration, I have the following YAML files:

I've tested the API inside the pod, and it works fine. However, when I try to access it from the host machine, the connection is refused.
Could you please guide me on resolving this issue?

[War-Oxi]

What is the operating system or execution environment of the host machine?

Have you checked the firewall?

Please check if port 31111 on the host machine is open using tools such as Telnet, netstat, or the ss command.