The network was silent. No path in, no path out.
Air-gapped deployment is the purest form of isolation. It seals your systems from the internet, creating an environment with zero external exposure. But isolation creates its own challenge: how to manage ingress resources without breaking the security model.
Ingress in an air-gapped deployment is not about speed or convenience. It’s about controlled entry, predictable routing, and hardened trust boundaries. Standard ingress controllers often assume constant internet access for pulling images, syncing certs, or talking to cloud APIs. In an air-gapped cluster, you own every layer — from container images to DNS configs to SSL certificates — because nothing can be fetched on demand.
The first step is building ingress controller images that live inside your private registry. No external image pulls, no surprise upgrades. Next, sync your TLS and routing configs from a trusted internal source. Every piece of ingress configuration — annotations, ConfigMaps, gateway definitions — must come from inside. Even your CRDs should be packaged and applied from local manifests.
For Kubernetes, common choices like NGINX Ingress Controller, HAProxy, or Traefik can all run in air-gapped mode. The principle is the same: ship the version you trust, deploy from your own store, and lock it down. Cluster-level DNS must point to your internal resolvers, and external DNS providers are out of the question. Certificates? Issue them from your internal CA, and distribute them manually or through secure automation inside the gap.
Load balancers in an air-gapped setup require direct hardware or isolated network configuration. Cloud-based LB services can’t be used, so you provision physical or virtual network endpoints within your private environment. Every port, every protocol is intentional. No defaults. No wildcards.
Air-gapped ingress management also means thinking about updates. You can’t “patch live” from the internet. You bring updates in through controlled, offline media. Validate, scan, sign, deploy. The ingress pipeline is now as secure as your weakest internal process.
The result is a system where external attack surface doesn’t exist — but the cost is that you must design ingress with discipline. This is where tooling helps. You don’t want endless scripts and manual YAML edits. You want fast spins, clear configs, repeatable tests, and deployment in minutes, even without internet access.
That’s why the best way to see it in action is to try it, end-to-end, in a platform built for this exact scenario. Go to hoop.dev, and set up an air-gapped ingress deployment live in minutes.