# infra/

Infrastructure for [Thermograph](https://thermograph.org): Terraform host
provisioning, the SOPS+age secrets vault, WireGuard/Swarm networking, Forgejo,
Caddy, mail, and the deploy scripts that run the already-built app images on each
host. This is a domain of the `emi/thermograph` monorepo — a host's checkout
(`/opt/thermograph`, `/opt/thermograph-beta`, or `/opt/thermograph-dev`) is a
checkout of the whole monorepo, and `infra/` never builds app source; it only
runs published images.

- **`terraform/`** — provisions/configures hosts (SSH-driven by default; an
  optional GCP-creating module is scaffolded, no live resources yet). See
  `terraform/README.md`. No tfstate is persisted anywhere — treat `apply` as
  executable documentation, not a routine operation.
- **`deploy/secrets/`** — the git-native SOPS+age secrets vault (every app secret,
  encrypted at rest, rendered at deploy time). See `deploy/secrets/README.md`.
- **`deploy/swarm/`, `deploy/forgejo/`** — the WireGuard/Swarm mesh spanning
  vps1, vps2 and the desktop, and Forgejo (git + CI + registry), pinned to
  vps1. See `ACCESS.md`.
- **`deploy/env-topology.sh`** — the single source of truth for where each
  environment (`dev`/`beta`/`prod`) lives: host, checkout path, branch, deploy
  mode, stack/compose name, env file, LB ports, DB role/database, service-name
  prefix. Every deploy path sources it and derives its behavior from it rather
  than guessing from the host it happens to be running on — necessary since
  vps2 alone now runs two environments.
- **`deploy/deploy.sh`** — the single deploy entry point for dev, beta and prod.
  Takes `SERVICE=backend|frontend|all` plus `BACKEND_IMAGE_TAG`/`FRONTEND_IMAGE_TAG`
  (and, on vps2, `THERMOGRAPH_ENV=beta|prod` to say which of the two checkouts
  it's acting on), resets the host checkout, renders secrets, and routes to the
  right orchestrator per `env-topology.sh`.
- **`deploy/deploy-dev.sh`** — a thin dev-specific wrapper around `deploy.sh`
  (dev compose overlay, dev's secrets policy). See `DEPLOY-DEV.md`.
- **`deploy/stack/`** — the **Swarm** path, live on **vps2** for both prod and
  beta: `thermograph-stack.yml` (prod: db, web, worker, lake, daemon, frontend,
  autoscaler, autoscaler-lake) and `thermograph-beta-stack.yml` (beta: the same
  service shape minus `db` and the autoscalers, every service name prefixed
  `beta-`). `deploy-stack.sh`, `autoscale.sh` and `lb/` are shared by both.
  Rolling updates are start-first, health-gated, with auto-rollback.
  `STACK_TEST=1` rehearses the whole stack on throwaway volumes and ports.
- **`docker-compose*.yml`** — the **compose** path, live only on **dev** (vps1)
  (db, backend, lake, daemon, frontend). `docker-compose.dev.yml` is dev's
  mesh-only overlay; `docker-compose.openmeteo.yml` is the self-hosted
  Open-Meteo overlay (prod only). `make dev-up` also runs this path locally as
  a laptop convenience — that is not an "environment", just a local rehearsal.

Which path an environment takes is decided by `deploy/env-topology.sh`
(`TG_DEPLOY_MODE`, keyed by `dev`/`beta`/`prod`): dev is `compose`, beta and prod
are both `stack`. The old host-wide marker `/etc/thermograph/deploy-mode` still
exists as a fallback for a by-hand run with no explicit environment, but it
cannot describe vps2, which runs two environments in two different checkouts —
so it is no longer the thing that decides where files go. The workflows never
need to know which mode an environment runs; they only pass `THERMOGRAPH_ENV`.

## Branches & how changes reach each environment

- **`dev`** — deploys to **dev on vps1** (`/opt/thermograph-dev`).
- **`main`** — deploys to **beta on vps2** (`/opt/thermograph-beta`).
- **`release`** — deploys to **prod on vps2** (`/opt/thermograph`).

App code IS environment-staged this way (`dev`→`main`→`release` maps to
vps1/dev → vps2/beta → vps2/prod via image tags, one `Deploy` workflow keyed by
branch). **Infra itself is not environment-staged** the same way: `infra-sync.yml`
fires on a push touching `infra/**` — on `dev` it fast-forwards vps1's dev
checkout, on `main` it fast-forwards **both** of vps2's checkouts (beta and
prod) — re-rendering each environment's own env file from the vault. It
deliberately does **not** roll any service: image tags are the app domains'
axis, not infra's. A compose or stack change that must recreate containers
takes effect on the next app deploy, or a by-hand `SERVICE=all …
deploy/deploy.sh` (or `deploy-dev.sh`) run.

Note the asymmetry this leaves: dev's infra checkout tracks `dev`, the same
branch its app images are staged by. Beta's and prod's infra checkouts both
track `main` — prod's *app images* are staged by `release`, but prod's *infra
checkout* follows `main`, same as beta's.
