Debugging

Ever spent hours wrestling with an application that seems perfectly fine, only to hit a roadblock that feels completely invisible? Chances are, your application isn’t the problem. When deploying services on Oracle Cloud Infrastructure (OCI), connection failure is usually not a coding issue. It’s a network issue. Traffic, before it can reach your running code, must pass through a series of security checkpoints, each acting like a protective gate. The biggest mistake new users make is thinking that opening a port is a single action. In reality, OCI uses a layered security model, and if even one gate is closed, the connection fails. ...

We encountered a frustrating issue in our Dockerized app environment where the frontend service was intermittently failing to load, and backend API calls were stuck or returning 504 Gateway Timeout errors. Our infrastructure consists of: Frontend container (React app) Backend API container (Go server, accessible at /api/...) Database container (PostgreSQL) Traefik reverse proxy managing HTTPS termination and routing Despite having valid TLS certs and seemingly working routes, users experienced broken pages, incomplete frontend rendering, and stuck fetch requests to /api endpoints. ...

When you first work on a Go project that uses the Kubernetes client SDK, you might feel lost about how to debug it on your local environment. Don’t panic. It’s actually very simple once you understand what’s happening behind the scenes. I’ll walk you through how to make it work using VSCode as an example. The Common Confusion When your program is designed to run inside a Kubernetes cluster, it usually connects to the cluster using rest.InClusterConfig(). This configuration relies on the ServiceAccount token mounted at /var/run/secrets/kubernetes.io/serviceaccount/token. When you run the same program locally, that path doesn’t exist, and the SDK will fail to initialize with an error like: ...