thermograph/deploy/swarm/label-forge-node.sh
Emi Griffith 0d8fc9f4d0 Add agent VPS access, a 2-node Docker Swarm, and Forgejo CI/CD (#234)
Three additive infrastructure layers on top of the two VPS boxes Terraform
already provisions (prod: new 48 GB/12-core box, thermograph.org; beta: old
VPS, 75.119.132.91). None of this touches backend/, Dockerfile,
docker-compose*.yml, terraform/, or deploy/db/ — that stays owned by the
app-containerization work in flight elsewhere; this is strictly the layer on
top. See INFRA.md for the full runbook and order of operations.

- deploy/provision-agent-access.sh: a dedicated, auditable full-sudo login
  (not raw root) for agent-driven ops — passwordless sudo under a distinct
  username, sshd hardened to key-only auth, auditd logging every
  root-effective command. One line to revoke.

- deploy/swarm/: a 2-node Swarm (prod=manager, beta=worker) joined over a
  WireGuard tunnel rather than trusting the public internet with the
  overlay data plane, which Docker's own guidance says should never face it
  directly. Swarm ports locked to the tunnel interface once joined. This
  cluster's only workload is Forgejo — it does not orchestrate the
  Terraform-managed app deploys, so nothing here can strand the app's
  single-writer database.

- deploy/forgejo/ + .forgejo/workflows/: Forgejo + Traefik + a
  Docker-in-Docker-sandboxed runner as a Swarm stack pinned to beta, plus
  Forgejo Actions workflows mirroring .github/workflows/*.yml. The custom
  auto-merge workflow step is dropped — it existed only to work around
  GitHub's paywalled branch protection on private free-tier repos, which
  Forgejo has no such tier for; native "auto merge when checks succeed"
  replaces it, and as a real git push (unlike GitHub's non-triggering
  token-merge) it fires the LAN deploy naturally with no double-trigger
  logic needed. appleboy/ssh-action is referenced by full URL (not mirrored
  on Forgejo's default action registry); actions/checkout and
  actions/setup-python resolve unchanged.

Migration is mirror-first: the GitHub repo import and workflow files land
here, but cutting deploy secrets over and retiring GitHub happens only after
verification (INFRA.md 3d) — GitHub stays live as a fallback throughout.

One flagged, unresolved mismatch: deploy.yml still triggers on `main`, but
terraform.tfvars.example names prod's deploy branch `release`. Left as a
faithful mirror rather than guessed at — reconcile with whoever's driving
Terraform/deploy.
2026-07-21 00:36:39 +00:00

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#!/usr/bin/env bash
# Run ONCE, on the manager node, after both boxes have joined the swarm.
# Labels the worker (beta) so the Forgejo stack's placement constraint
# (node.labels.role == forge) schedules there and nowhere else.
set -euo pipefail
WORKER_HOSTNAME="${1:?usage: $0 <worker_node_hostname_or_id> (see: docker node ls)}"
docker node update --label-add role=forge "$WORKER_HOSTNAME"
echo
echo "Labels on ${WORKER_HOSTNAME}:"
docker node inspect "$WORKER_HOSTNAME" --format '{{.Spec.Labels}}'