TCP 4317 can serve the app on loopback while staying closed to public traffic. That separation makes me curious about how Nginx can take public requests without making Node’s port the front door. That boundary helps you judge how much…
Your `serverless.yml` maps `GET /hello` to `src I’m curious how that small route config becomes an AWS footprint you can understand before granting deployment access. You’ll trace how an HTTP API request reaches the function and what response it returns.…
Ubuntu’s package listing shows Node.js 18.19.1, while the project’s setup notes call for a supported release. I was surprised that the distribution’s version number could matter before the first line of app code runs. The practical goal is a runtime…
The terminal says “Listening on port 3100,” but your browser keeps waiting at the EC2 address. I like that the sample answers with a plain-text line, so there’s a clear result to recognize when the app responds. Express creates the…
The `/api/health` route can return Node’s JSON while “ still gets a 404. I was surprised that a stylesheet failure can start with how NGINX reads the URL, not with the app’s response. That turns a browser symptom into a…
A sticker’s listed price doesn’t tell you the delivered total for your address. I was curious what the Unixstickers page shows about the Ubuntu item before it reaches the cart. The product details give you a clear basis for deciding…
The old Breach instructions name `breach-v0.3.22-alpha.6-linux-x64.tar.gz`, but a familiar filename can leave the key question unanswered: what was inside? I wanted to understand what someone opening that archive was actually trying to run. Knowing the package’s original role gives the…
I ran a scan against my own cluster last month. Trivy reported three high-severity CVEs from 2025, all exploitable through configurations I thought were safe. The official CVE feed publishes new advisories almost every month, and the ones that matter…
Admission controllers sit between your users and the Kubernetes API. Every create or update request passes through them. Get them wrong and you either lock out your own team or let a privileged pod slip through. When PodSecurityPolicy disappeared in…
Certbot’s HTTP-01 challenge only works through port 80, and renewal fails when the server block or the port changes after the first issuance. A certificate on disk does not prove HTTPS works. I tested a workspace nginx -t configuration and…
