# 04 — SWAG Nginx Proxy Configs (Prod)

## Context
Same template files as test (`template/swag/site-confs/*.conf.tpl`), different env vars.
The pipeline processes templates with prod-specific subdomain values.

## Required env vars (in `.env` on storagebox `prod/secrets/iklim.co/.env.prod`)

```bash
API_SUBDOMAIN=api.iklim.co
APIGW_SUBDOMAIN=apigw.iklim.co
RABBITMQ_SUBDOMAIN=rabbitmq.iklim.co
GRAFANA_SUBDOMAIN=grafana.iklim.co
RESTRICTED_IPS="78.187.87.109/32,95.70.151.248/32"

# SWAG storage paths — StorageBox is mounted on all app nodes, shared filesystem
# cert-reloader writes here; Vault reads from this path on every node — no SSH distribution needed
SWAG_CERT_DIR=/mnt/storagebox/ssl
# SWAG config dirs on StorageBox — all three survive node failover without pipeline re-run
SWAG_CONFIG_DIR=/mnt/storagebox/swag/config
SWAG_SITE_CONFS_DIR=/mnt/storagebox/swag/site-confs
```

## Template files (already created in test step 04)

- `template/swag/site-confs/default.conf`
- `template/swag/site-confs/api.conf.tpl`
- `template/swag/site-confs/apigw.conf.tpl`
- `template/swag/site-confs/rabbitmq.conf.tpl`
- `template/swag/site-confs/grafana.conf.tpl`

No new files to create — the same templates work for both environments.

## Deploy step (handled by pipeline — see `08-deploy-pipeline-update.md`)

```bash
set -a; . ./.env; set +a
export RESTRICTED_IPS_BLOCK="$(echo "$RESTRICTED_IPS" | tr ',' '\n' | sed 's|.*|        allow &;|')"

mkdir -p "$SWAG_SITE_CONFS_DIR"

SWAG_VARS='${API_SUBDOMAIN}${APIGW_SUBDOMAIN}${GRAFANA_SUBDOMAIN}${RABBITMQ_SUBDOMAIN}${RESTRICTED_IPS_BLOCK}'
for tpl in template/swag/site-confs/*.conf.tpl; do
  out="$SWAG_SITE_CONFS_DIR/$(basename "${tpl%.tpl}")"
  envsubst "$SWAG_VARS" < "$tpl" | sudo tee "$out" > /dev/null
  echo "✅ $out"
done

sudo cp template/swag/site-confs/default.conf "$SWAG_SITE_CONFS_DIR/default.conf"
```

With `API_SUBDOMAIN=api.iklim.co`, the output file `$SWAG_SITE_CONFS_DIR/api.conf`
(`/mnt/storagebox/swag/site-confs/api.conf`) will contain `server_name api.iklim.co;` — correct for prod.

## Verification

After deploy, on iklim-app-01:
```bash
cat /mnt/storagebox/swag/site-confs/api.conf | grep server_name
```
Expected: `server_name api.iklim.co;`

```bash
docker exec $(docker ps -q -f name=iklimco_swag) nginx -t
```
Expected: `syntax is ok`

```bash
curl -si https://api.iklim.co/health
```
Expected: APISIX response with valid `*.iklim.co` cert.

## Notes
- `Prometheus` is intentionally NOT exposed via SWAG. Access it via Grafana
  (internal connection: `http://prometheus:9090`) or SSH tunnel.
- If additional restricted-access subdomains are needed in the future, create a new
  `template/swag/site-confs/<name>.conf.tpl` following the same pattern.
