How do I debug Kubernetes ingress controllers for HTTP 502 or 504 errors?
1. Understand the error codes HTTP 502 (Bad Gateway): The Ingress controller reached the backend, but the backend returned an invalid response. HTTP 504 (Gateway Timeout): The Ingress controller didn’t receive a response from the backend within the configured timeout. 2. Check the Ingress resource Start with the Ingress manifest: kubectl describe ingress <ingress-name> Verify: […]