Nine Ways Backstage Breaks Before Your Developer Portal Works

A production failure log from implementing a Backstage Golden Path for KServe model deployments — nine distinct failures with exact error output, root causes, and fixes. If you have ever deployed Backstage and stared at a blank /create page wondering what went wrong, this article is for you. Most Backstage tutorials end at "the portal is running." This one starts there. This is a complete production failure log from implementing a Backstage Golden Path that deploys KServe model inference endpoints on Kubernetes. Nine distinct failures. Every one with exact error output, root cause, and the fix that worked. The goal was simple: a developer fills a Backstage form, a GitHub PR opens, the PR merges, ArgoCD deploys a KServe InferenceService, and the endpoint responds to predictions. Getting there took nine failures across three days. This is part three of a series on building a production-hardened AI inference platform: Part 1: Why Your KServe InferenceService Won't Become Ready Part 2: 5 G