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by yixn_io
113 days ago
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Two weeks ago I launched ClawHosters, a managed hosting platform for OpenClaw (open-source AI agent framework). 50 paying customers so far. Here's the technical post-mortem. The stack: Hetzner VPS provisioning from snapshots, 5-layer Traefik routing with Redis provider, Nginx reverse proxy that kept silently breaking SSE streams, Docker container isolation with a writable-layer commit strategy, and a config migration registry to handle crash loops at 2 AM. Some highlights from the article: - Why `proxy_buffering off` alone doesn't fix SSE through Nginx (you need a re-framing buffer)
- Docker's `cp` command silently refuses symlinks — cost me a day
- ZeroTier + `nsenter` for injecting routes into running containers without restart
- Snapshot-based provisioning: ~3 min cold, ~30s with pre-warmed pool
- Per-request LLM billing with included token allowances per tier Built as a solo developer alongside a full-time job. The whole thing runs in a single Rails monolith. |
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