thermograph/terraform/main.tf
Emi Griffith 47aea569ed Add Terraform to provision the VPS hosts (compose keeps running the app) (#223)
Terraform config under terraform/ manages the two existing VPS hosts and hands the
app to docker-compose, with local state:

- prod: the new 48GB/12-core VPS (release branch, thermograph.org), sized larger.
- beta: the old VPS 75.119.132.91 (main branch, testing tier), no public domain.
- The LAN dev box stays on deploy/deploy-dev.sh (dev branch) — out of Terraform.

A reusable module (modules/thermograph-host) SSHes each host to install docker/
compose/ufw (+ Caddy when a domain is set), sync the checkout to the host's branch,
render /etc/thermograph.env from Terraform variables (secrets pushed via provisioner
content, never on local disk), `docker compose up -d`, and health-check. Named
volumes are preserved on re-apply, so the Postgres data is never recreated.

Container resources are now env-driven in docker-compose.yml (APP_CPUS/DB_CPUS/
DB_MEMORY/WORKERS) with unchanged defaults, so Terraform can size each host.
2026-07-20 07:42:15 +00:00

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locals {
# Repo root (one level above this terraform/ dir). The module hashes the compose
# files here so a compose change re-triggers the remote deploy, and this is the
# tree the host's checkout mirrors over git.
repo_root = abspath("${path.root}/..")
}
# One module instance per host. The module is entirely SSH-provisioner driven — it
# configures an already-existing VPS and hands the app off to docker compose.
module "host" {
source = "./modules/thermograph-host"
for_each = var.hosts
# Per-host config
name = each.key
host = each.value.host
ssh_user = each.value.ssh_user
ssh_private_key_path = each.value.ssh_private_key_path
role = each.value.role
git_branch = each.value.git_branch
domain = each.value.domain
compose_files = each.value.compose_files
app_dir = each.value.app_dir
workers = each.value.workers
app_cpus = each.value.app_cpus
db_cpus = each.value.db_cpus
db_memory = each.value.db_memory
# Shared infra config
repo_root = local.repo_root
repo_url = var.repo_url
app_port = var.app_port
# Shared secrets -> /etc/thermograph.env
postgres_password = var.postgres_password
auth_secret = var.auth_secret
vapid_private_key = var.vapid_private_key
vapid_public_key = var.vapid_public_key
vapid_contact = var.vapid_contact
google_verify = var.google_verify
bing_verify = var.bing_verify
mail_backend = var.mail_backend
smtp_host = var.smtp_host
smtp_port = var.smtp_port
smtp_user = var.smtp_user
smtp_password = var.smtp_password
smtp_starttls = var.smtp_starttls
mail_from = var.mail_from
mail_reply_to = var.mail_reply_to
discord_webhook = var.discord_webhook
discord_public_key = var.discord_public_key
discord_app_id = var.discord_app_id
discord_bot_token = var.discord_bot_token
discord_client_secret = var.discord_client_secret
}