Resolving the Connexion Refusée Error with Ingress in Kubernetes

Описание: Learn to fix the `connexion refusée` error when using Ingress with Kubernetes by following our detailed troubleshooting guide, including configurations and curl tests.
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Troubleshooting the Connexion Refusée Error with Ingress in Kubernetes

As new technology continues to shape the way we deploy and manage applications, Kubernetes has become a vital part of the landscape. However, navigating its various components, such as Ingress controllers, can often lead to confusion, especially when errors arise. One common issue that users face is the dreaded connexion refusée error while trying to access services configured through Ingress.

If you're encountering this frustrating problem, don't worry! In this guide, we will break down the situation, identify the possible causes, and provide a clear, step-by-step guide to help you resolve the issue.

Understanding the Basics

What is Ingress?

Ingress in Kubernetes is an API object that manages external access to the services within a cluster, usually HTTP. It allows you to define rules and routing paths for your services, making it possible to expose multiple services under a single IP address.

The Problem at Hand

When trying to connect to the Ingress via a specified path, you might see a connexion refusée error. In simpler terms, this means that the connection to the requested service was refused—often due to configuration or routing issues.

Analyzing the Connection

Initial Setup and Information Gathering

From the provided details, we see:

Two NGINX pods set up as a deployment.

A service named my-service-ingress that directs traffic to these pods.

An Ingress resource set up with a specific route.

Here's what we need to check:

Service Configuration: The service is properly configured to send traffic to the NGINX pods.

Ingress Rules: The Ingress rules need to match the requests being made.

Node and Port Configuration: Ensure you're hitting the correct Node IP and Port.

Key Components of Your Setup

Your service configuration:

[[See Video to Reveal this Text or Code Snippet]]

Your Ingress configuration:

[[See Video to Reveal this Text or Code Snippet]]

Solution Steps

Step 1: Ensure Correct Path Access

The first thing to note is that while your Ingress resource is configured to handle traffic on the path /frontend, you are currently trying to access:

[[See Video to Reveal this Text or Code Snippet]]

This doesn't include the /frontend path specified in your Ingress.

Step 2: Use NodePort with Node IP

Access the service using the external IP of the Kubernetes Node.

Include the NodePort assigned to your Ingress controller.

You should modify your curl command to hit the path specified in the Ingress:

[[See Video to Reveal this Text or Code Snippet]]

Make sure to replace 192.168.1.39 with the IP of the correct node and 32412 with the NodePort exposed by the Ingress controller.

Step 3: Verify the Ingress Controller Status

Make sure the Ingress controller is running without issues. You can check this using:

[[See Video to Reveal this Text or Code Snippet]]

From the output, ensure that the NGINX Ingress controller pod is in the Running state.

Additional Tips

Check Firewall Rules: Ensure that your firewall allows traffic on the NodePort and the required service ports.

Use Logs for Debugging: If issues persist, check the logs for both the NGINX Ingress controller and the application pods to find potential errors.

Consider DNS Mapping: For production environments, consider mapping your Ingress to a domain name with proper certificates for HTTPS access.

Conclusion

Troubleshooting Kubernetes Ingress issues can appear daunting at first, especially when faced with connection refusals. By methodically verifying your configurations and ensuring proper routing paths, you can successfully resolve these common issues.

Now that you understand how to address the connexion ref