burrow/nixos

Burrow Forge Runbook

This directory contains the Burrow forge host definition and the Hetzner bootstrap shape for burrow-forge.

Mail hosting is intentionally not part of this NixOS host in the current plan. Burrow's first mail path is Forward Email with Burrow-owned custom S3 backups; see docs/FORWARDEMAIL.md.

Files

• hosts/burrow-forge/default.nix: host entrypoint
• modules/burrow-forge.nix: Forgejo, Caddy, PostgreSQL, and admin bootstrap module
• modules/burrow-forge-runner.nix: Forgejo Actions runner and agent identity bootstrap
• modules/burrow-forgejo-nsc.nix: Namespace-backed ephemeral Forgejo runner services
• hetzner-cloud-config.yaml: desired Hetzner host shape
• keys/contact_at_burrow_net.pub: initial operator SSH public key
• keys/agent_at_burrow_net.pub: automation SSH public key
• ../Scripts/hetzner-forge.sh: Hetzner inventory and replace workflow
• ../Scripts/nsc-build-and-upload-image.sh: temporary Namespace builder -> raw image -> Hetzner snapshot
• ../Scripts/bootstrap-forge-intake.sh: legacy intake bootstrap helper; current forge runtime secrets should live in ../secrets/forgejo/*.age
• ../Scripts/check-forge-host.sh: verify Forgejo, Caddy, the local runner, and optional NSC services after boot
• ../Scripts/cloudflare-upsert-a-record.sh: upsert DNS-only Cloudflare A records for Burrow host cutovers
• ../Scripts/forge-deploy.sh: remote nixos-rebuild entrypoint for the forge host
• ../Scripts/provision-forgejo-nsc.sh: render Burrow Namespace dispatcher/autoscaler bootstrap inputs and ensure the default Forgejo scope exists
• ../secrets/forgejo/*.age: authoritative encrypted forge admin password, agent SSH key, and Namespace runtime configs for the forge host

Intended Flow

1. Build and upload the raw NixOS image with Scripts/hetzner-forge.sh build-image or Scripts/nsc-build-and-upload-image.sh.
2. Recreate burrow-forge from the latest labeled snapshot with Scripts/hetzner-forge.sh recreate-from-image --yes.
3. Encrypt the Forgejo admin password and agent SSH key into secrets/forgejo/{admin-password,agent-ssh-key}.age.
4. Let burrow-forgejo-bootstrap.service create or rotate the initial Forgejo admin account from the agenix secret path.
5. Let burrow-forgejo-runner-bootstrap.service register the self-hosted Forgejo runner and seed Git identity as agent <agent@burrow.net>.
6. Run Scripts/provision-forgejo-nsc.sh locally to refresh secrets/forgejo/{nsc-token,nsc-dispatcher-config,nsc-autoscaler-config}.age, then deploy with Scripts/forge-deploy.sh so agenix updates the live forgejo-nsc runtime paths.
7. Use Scripts/cloudflare-upsert-a-record.sh to point git.burrow.net, burrow.net, and nsc-autoscaler.burrow.net at the host with Cloudflare proxying disabled for ACME.
8. Use Scripts/forge-deploy.sh --allow-dirty for subsequent remote nixos-rebuild runs from the live workspace.
9. Configure Forward Email custom S3 backups for burrow.net and burrow.rs out-of-band with Tools/forwardemail-custom-s3.sh.

Current Constraints

• burrow-forge is live on NixOS in hel1 at 89.167.47.21, and Scripts/check-forge-host.sh --expect-nsc passes locally against that host.
• Public Burrow forge cutover completed on March 15, 2026:
  • burrow.net, git.burrow.net, and nsc-autoscaler.burrow.net now publish public A records to 89.167.47.21
  • HTTP redirects to HTTPS on all three names
  • https://burrow.net returns the root forge landing response
  • https://git.burrow.net returns the live Forgejo front door
  • https://nsc-autoscaler.burrow.net terminates TLS on Caddy and returns the expected application-level 404 for /
• The Cloudflare token now lives in secrets/cloudflare/api-token.age; the current token is account-scoped: POST /accounts/<account>/tokens/verify succeeds, while POST /user/tokens/verify returns Invalid API Token.
• burrow.rs still resolves publicly to a Vercel DEPLOYMENT_NOT_FOUND response.
• Both domains publish Forward Email MX/TXT records.
• Forward Email custom S3 is live on both domains against the Hetzner burrow bucket and the public regional endpoint https://hel1.your-objectstorage.com.
• The current Hetzner account contains both:
  • the older Ubuntu bootstrap server in hil
  • the live burrow-forge NixOS server in hel1
• The remaining forge work is follow-on product/integration work, not host bring-up, mail backup wiring, or public DNS cutover.