How to debug failing simple minikube ingress?

@viola_gleichner 

Debugging a failing simple minikube ingress involves troubleshooting and verifying various components of the setup. Here are some steps to help you debug the issue:

1. Verify minikube status: Ensure that minikube is running and properly configured by executing the following command: minikube status
2. Verify ingress addon: Check if the ingress addon is enabled in minikube by running: minikube addons list Ensure that the ingress addon is listed and enabled. If not, enable it using the command: minikube addons enable ingress
3. Verify ingress controller deployment: Ensure that the ingress controller is deployed and running. Check the status of the ingress controller's pods using: kubectl get pods -n kube-system Look for the pods with names starting with "ingress-nginx". If they are not in the "Running" state, there may be an issue with the ingress controller deployment.
4. Verify ingress resource: Check if the ingress resource is properly defined and applied to the desired service. Run the following command to view the ingress resource: kubectl get ingress Verify that the ingress resource is present and correctly configured with the desired service and rules.
5. Check DNS resolution: Ensure that the DNS resolution for the ingress domain is correct. You can add an entry to the /etc/hosts file on your local machine to map the ingress domain to the minikube IP address.
6. Verify networking setup: Check if the networking setup is correct. Execute the following command to view the services and their associated IPs: kubectl get services Verify that the service associated with the ingress resource is exposed on a valid IP.
7. Check ingress controller logs: If the above steps didn't reveal any issues, check the logs of the ingress controller pods to identify any error messages or warning signs: kubectl logs
8. Verify firewall rules: If you are running minikube on a cloud platform or virtual machine, ensure that the necessary firewall rules are configured to allow ingress traffic to reach the cluster.

By following the above steps, you can systematically identify and debug the failing simple minikube ingress setup.

@viola_gleichner 

If the above steps do not resolve the issue, here are some additional troubleshooting tips to debug failing simple minikube ingress:

1. Check for any errors in the Ingress controller logs: View the logs of the Ingress controller pods to look for any errors or issues that might be causing the problem. Use the following command:

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kubectl logs <ingress-controller-pod-name> -n <namespace>

1. Verify that the Ingress resource paths and rules are correctly configured: Ensure that the paths and rules specified in the Ingress resource match the service endpoints. Incorrect paths or misconfigured rules can cause routing issues.
2. Check for any conflicting configurations: Make sure there are no conflicting Ingress resources or conflicting configurations that might be causing conflicts in routing traffic.
3. Verify network policies: Check if there are any network policies in place that might be blocking the traffic to the Ingress controller or the service.
4. Test the Ingress controller directly: If the Ingress resource is not working as expected, try to access the service directly through the Ingress controller's IP address and port to see if the issue is with the Ingress resource or the Ingress controller itself.
5. Restart the Ingress controller pods: Sometimes, restarting the Ingress controller pods can resolve transient issues or state inconsistencies. Use the following command to delete and recreate the Ingress controller pods:

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kubectl delete pods -n <namespace> -l app.kubernetes.io/name=<ingress-controller-name>

By systematically troubleshooting these areas, you should be able to identify the root cause of the failing simple minikube ingress setup and resolve the issue.