vienalatina/docs/server-setup.md

# Server setup — step by step (Hetzner CX22, Ubuntu 24.04)

Every command you need, in order. Commands prefixed `local$` run on your own
computer; everything else runs on the server over SSH. Budget ~2–3 hours.

Where you see `pablo`, `<SERVER-IP>`, or a password placeholder, substitute
your own values.

---

## 0. Order the server

At [console.hetzner.com](https://console.hetzner.com) → Create Server:

- **Location:** Nuremberg
- **Image:** Ubuntu 24.04
- **Type:** Shared vCPU → **CX22** (2 vCPU, 4 GB RAM, €4.51/mo)
- **SSH key:** add your public key (`local$ cat ~/.ssh/id_ed25519.pub` — if you
  don't have one: `local$ ssh-keygen -t ed25519`). Adding it here means root
  login works by key from the start, no password emails.

Note the server's IP address — that's `<SERVER-IP>` everywhere below.

## 1. DNS (do this first — it needs time to propagate)

At your domain registrar, add two **A records**:

| Name | Type | Value | TTL |
|---|---|---|---|
| `git` | A | `<SERVER-IP>` | 300 |
| `ci` | A | `<SERVER-IP>` | 300 |

**Do NOT touch the record for `vienalatina.com` itself** — the live WordPress
site keeps running until cutover day.

Check propagation (repeat until it prints the server IP):

```sh
local$ dig +short git.vienalatina.com
```

## 2. First login + basic hardening

```sh
local$ ssh root@<SERVER-IP>
```

Update and create your user:

```sh
apt update && apt -y upgrade

adduser pablo                 # pick a strong password, skip the questions
usermod -aG sudo pablo

# give your user the same SSH key root has
rsync --archive --chown=pablo:pablo ~/.ssh /home/pablo
```

Lock SSH down to keys only:

```sh
sed -i 's/^#\?PasswordAuthentication.*/PasswordAuthentication no/' /etc/ssh/sshd_config
sed -i 's/^#\?PermitRootLogin.*/PermitRootLogin no/' /etc/ssh/sshd_config
systemctl restart ssh
```

**Before closing this terminal**, open a second one and confirm you can get in:

```sh
local$ ssh pablo@<SERVER-IP>
```

From here on, work as `pablo` and prefix privileged commands with `sudo`
(or run `sudo -i` once).

Firewall + brute-force protection:

```sh
sudo apt install -y ufw fail2ban
sudo ufw allow OpenSSH
sudo ufw allow 80/tcp
sudo ufw allow 443/tcp
sudo ufw --force enable
sudo systemctl enable --now fail2ban
```

## 3. Install Caddy

```sh
sudo apt install -y debian-keyring debian-archive-keyring apt-transport-https curl
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/gpg.key' \
  | sudo gpg --dearmor -o /usr/share/keyrings/caddy-stable-archive-keyring.gpg
curl -1sLf 'https://dl.cloudsmith.io/public/caddy/stable/debian.deb.txt' \
  | sudo tee /etc/apt/sources.list.d/caddy-stable.list
sudo apt update && sudo apt install -y caddy
```

## 4. Install Docker

```sh
curl -fsSL https://get.docker.com | sudo sh
sudo usermod -aG docker pablo
```

Log out and back in (`exit`, then `ssh pablo@<SERVER-IP>`) so the `docker`
group takes effect. Verify: `docker ps` should print an empty table, not a
permission error.

## 5. Get this repo's infra files onto the server

```sh
sudo mkdir -p /srv /var/www/vienalatina.com
cd ~
git clone https://github.com/pablovolenski/vienalatina.git
sudo cp -r vienalatina/infra/gitea /srv/gitea
sudo cp -r vienalatina/infra/woodpecker /srv/woodpecker
sudo cp vienalatina/infra/caddy/Caddyfile /etc/caddy/Caddyfile
sudo systemctl reload caddy
```

## 6. Bring up Gitea

```sh
cd /srv/gitea
sudo docker compose up -d
```

Wait ~30 s, then open **https://git.vienalatina.com** in your browser (the
certificate is fetched automatically; if you get an error, wait a minute for
DNS/certificate and reload). You'll see Gitea's install page:

- Database: **SQLite3** (fine at this scale)
- Server domain / base URL: leave as pre-filled (`git.vienalatina.com`)
- **Administrator account** (bottom of the page — expand it): username
  `pablo`, your email, a strong password. Create it now; the first account
  is the admin.
- Click **Install Gitea**.

Then create the two OAuth apps and the bot user, all in the Gitea web UI:

1. **Woodpecker OAuth app:** profile icon → Site Administration →
   Integrations → Applications → *Create new OAuth2 application*
   - Name: `woodpecker`
   - Redirect URI: `https://ci.vienalatina.com/authorize`
   - Save the **Client ID** and **Client Secret** — needed in step 7.
2. **Decap OAuth app:** same screen, second application
   - Name: `decap-cms`
   - Redirect URI: `https://vienalatina.com/admin/` (exactly, trailing slash
     included — Gitea matches it literally)
   - **Untick "Confidential Client".** Decap runs in the browser and
     authenticates with PKCE; a confidential app makes Gitea demand a client
     secret that a browser cannot keep, and the login fails *after* you
     authorize, which makes it look like a Decap bug.
   - Save the **Client ID** — it goes into `static/admin/config.yml` (step 9).
     There is no secret to save, and the Client ID is not one either: it is
     published in the site's JavaScript by design.
3. **Translations bot:** Site Administration → Identity & Access →
   User Accounts → *Create User Account*
   - Username: `translations`, email: `translations@vienalatina.com`,
     any strong password.
   - Log in **as the bot user** once (private window), go to Settings →
     Applications → *Generate New Token*, scopes: **repository (write)**.
     Save the token — it becomes the `gitea_push_token` secret in step 8.

## 7. Bring up Woodpecker

```sh
cd /srv/woodpecker
sudo cp .env.example .env
openssl rand -hex 32        # copy the output
sudo nano .env              # paste Woodpecker OAuth client ID + secret + the random hex
sudo mkdir -p data && sudo chown -R 1000:1000 data   # v3 images run as uid 1000
sudo docker compose up -d
```

Open **https://ci.vienalatina.com** → *Login* → it bounces you to Gitea →
*Authorize*. You're in, as admin (the `WOODPECKER_ADMIN=pablo` line in the
compose file — edit it if your Gitea username differs).

## 8. Create the site repo and wire the pipeline

Create the repo in Gitea: **+** (top right) → New Repository → name
`vienalatina`, owner `pablo`, **not** initialized with anything → Create.

Add the `translations` bot as collaborator: repo → Settings →
Collaborators → add `translations` with **Write** access.

Push the code into Gitea (from the server clone you made in step 5, or from
your laptop):

```sh
cd ~/vienalatina
git remote add gitea https://git.vienalatina.com/pablo/vienalatina.git
git push gitea main
```

(It will ask for your Gitea username/password.)

In Woodpecker (**https://ci.vienalatina.com**):

1. *Repositories* → *Add repository* → enable `pablo/vienalatina`
   (this auto-creates the push webhook in Gitea).
2. Repo → Settings → *Project settings* → check **Trusted** (needed so the
   deploy step may mount `/var/www/vienalatina.com`).
3. Repo → Settings → *Secrets* → add `gitea_push_token`, the bot token from
   step 6.3. That is the only secret — translation runs locally and needs no key.

Build the translation image before the first run (~5 minutes; it downloads
about 1GB of model):

```sh
cd ~/vienalatina
docker build -t vienalatina/translate:1 docker/translate
```

The push in the step above has already triggered a first pipeline — it ran
before the image and secret existed, so **push a new commit rather than using
Restart**. Restart replays the old commit, and a restart's empty diff range
makes the translate step find nothing to do. All three steps (translate →
build → deploy) should go green, and `/var/www/vienalatina.com/` on the server
now contains the built site:

```sh
ls /var/www/vienalatina.com     # index.html, de/, pt-br/, robots.txt, llms.txt …
```

## 9. Point Decap at Gitea

On your working copy: edit `static/admin/config.yml`, replace
`REPLACE_WITH_GITEA_OAUTH_CLIENT_ID` with the Decap OAuth Client ID from
step 6.2, commit, push to Gitea. (You can't log into `/admin` until the main
domain is live — that's expected.)

```sh
cd ~/vienalatina
sed -i 's/REPLACE_WITH_GITEA_OAUTH_CLIENT_ID/<client id>/' static/admin/config.yml
grep app_id static/admin/config.yml
git commit -am "Wire Decap to the Gitea OAuth app" && git push gitea main
```

This value is per-deployment: the placeholder is what belongs in the repo, so
leave it in place in any copy of this platform that is not this server.

If `/admin/` still shows *Client ID not registered* afterwards, the page is
serving a cached `config.yml` — hard-reload it. If it fails *after* the Gitea
authorize screen instead, the app was created as a confidential client; delete
it and recreate it with that box unticked.

## 10. Test the translation loop end-to-end

```sh
cd ~/vienalatina
cat > content/post/mi-test.es.md <<'EOF'
---
title: "Artículo de prueba"
date: 2026-08-01
lang: es
manual_translation: false
categories: [Comunidad]
---

Esto es una prueba del flujo de traducción automática en el Grätzl.
EOF
git add . && git commit -m "test: pipeline round-trip" && git push gitea main
```

Within ~60 s the Woodpecker pipeline should finish and
`content/post/mi-test.de.md` + `content/post/mi-test.pt-br.md` appear in the
Gitea repo as commits by `translations`. Note "Grätzl" survives untranslated
(protected term). Delete all three test files with another commit when done.

Saturday complete. 🎉

---

## Cutover day (Sunday evening)

1. Run the content migration and push (see README, "One-shot content
   migration"). Migrated Polylang siblings arrive frozen
   (`manual_translation: true`) because they are *human* translations — the
   machine engine must never overwrite them. Then
   `python scripts/translate.py --backfill` fills in any set that WordPress
   had no translation for. Spot-check the built site with
   `grep` on `/var/www/vienalatina.com/index.html`; the
   `curl -H "Host: vienalatina.com" http://127.0.0.1/` trick only works after
   step 3, since Caddy has no matching site block until then.
2. At the registrar: lower the `vienalatina.com` A record TTL to 300, wait
   for the old TTL to expire, then change the A record to `<SERVER-IP>`
   (and `www` too, as CNAME to `vienalatina.com` or A to the same IP).
3. On the server: uncomment the `vienalatina.com` blocks in
   `/etc/caddy/Caddyfile`, then `sudo systemctl reload caddy`. Caddy fetches
   the certificate as soon as DNS resolves to this server.
4. Verify: the checklist in the migration plan (hreflang tags, robots.txt,
   llms.txt, Lighthouse, `manual_translation: true` freeze test, and the
   loop-prevention test — after the bot pushes siblings, the pipeline it
   triggers must report "nothing to translate" rather than translating the
   siblings back).
5. Keep the WP host untouched for 30 days as fallback; watch Google Search
   Console and add Caddy 301s for any 404s it reports.

## Optional: nightly backups (restic → Hetzner Storage Box)

```sh
sudo apt install -y restic
sudo restic -r sftp:uXXXXXX@uXXXXXX.your-storagebox.de:backups init
# then a root cron entry, e.g.:
# 0 3 * * * restic -r sftp:... backup /srv /var/www --password-file /root/.restic-pw
```

## 11. Members area (`/comunidad/`)

The private area: roles and an internal board. It is the only part of the site
that runs code to answer a request, and the only data on the server that is not
already in git.

### 11.1 Register the OAuth application

Gitea → **Site Administration → Integrations → Applications** →
*Create new OAuth2 application*:

- Name: `vienalatina-board`
- Redirect URI: `https://vienalatina.com/comunidad/auth/callback`
- **Leave "Confidential Client" TICKED.**

That last point is the opposite of the Decap application in step 6.2, and the
difference is worth understanding rather than memorising. Decap runs in the
visitor's browser, where any secret would be readable by the visitor, so it has
to be a public client using PKCE. The board runs on the server, so it can hold
a secret and should — a confidential client is the stronger of the two.

Save the **Client ID** and the **Client Secret**.

### 11.2 Optional: a token for creating accounts

Without it, admins can add people who already have a Gitea login, and nothing
else changes. With it, they can create the Gitea account from inside the members
area and hand over a one-time password.

Log in as a Gitea **site administrator** → Settings → Applications → *Generate
New Token* → scope **admin (write)**.

Understand what this token is before you create it: it can create and modify any
account on the instance, including administrators. Anything that can read the
board's environment — the compose file, `docker inspect`, a shell in the
container — can use it. If you would rather not have that on the box, leave
`GITEA_ADMIN_TOKEN` empty and create accounts in Gitea by hand.

### 11.3 Build and run

```sh
cd ~/vienalatina
docker build -t vienalatina/board:1 -f docker/board/Dockerfile .

sudo mkdir -p /srv/board/data
sudo cp -r infra/board/. /srv/board/
cd /srv/board
sudo cp .env.example .env
openssl rand -hex 32          # paste as BOARD_SECRET_KEY
sudo nano .env                # client id, secret, BOARD_OWNER, optional admin token
sudo chown -R 1000:1000 /srv/board/data
sudo docker compose up -d
```

`BOARD_OWNER` is applied once, to an empty database, and ignored from then on.
It cannot be used to take ownership later: that is deliberate, because otherwise
editing a file on disk would be a quieter route to the top than asking for it.
Ownership moves only through *Transferir titularidad* inside the app.

### 11.4 Route it through Caddy

Add to the `vienalatina.com` block in `/etc/caddy/Caddyfile` (already present in
`infra/caddy/Caddyfile`):

```
@board path /comunidad /comunidad/*
reverse_proxy @board 127.0.0.1:8080
```

Then `sudo caddy validate --config /etc/caddy/Caddyfile && sudo systemctl reload caddy`.

Both paths are matched on purpose: Flask redirects `/comunidad` to
`/comunidad/`, and matching only the trailing-slash form lets the bare path fall
through to the static site and 404.

### 11.5 Back it up — this part is not optional

Everything else on this server is reproducible from the repository. The board's
threads, comments and membership exist in exactly one place.

```sh
sudo apt install -y sqlite3
crontab -e
# 15 4 * * *  /home/pablo/vienalatina/scripts/backup-board.sh >> /home/pablo/board-backup.log 2>&1
```

The script uses SQLite's `.backup` rather than copying the file, because the
database is live and in WAL mode — a plain `cp` can capture it missing its most
recent commits. Test a restore before you rely on it: stop the container, gunzip
a backup over `/srv/board/data/board.db`, start it again.

### 11.6 Who can do what

| | Owner | Admin | User |
|---|---|---|---|
| Post, comment, edit own | ✓ | ✓ | ✓ |
| Delete any post | ✓ | ✓ | — |
| Edit someone else's post | — | — | — |
| Pin and close threads | ✓ | ✓ | — |
| Create users | ✓ | ✓ | — |
| Create admins | ✓ | — | — |
| Suspend a user | ✓ | ✓ | — |
| Suspend an admin | ✓ | — | — |
| Transfer ownership | ✓ | — | — |

Nobody edits anyone else's words, administrators included. Taking a post down is
visible to the person who wrote it; rewriting it is not, and an admin who could
do that could leave a sentence attributed to a member who never wrote it.

There is exactly one owner, and the database enforces it with a unique index
rather than trusting the application to remember. The owner cannot be suspended
or demoted by anyone, themselves included — to step down, transfer ownership to
an admin.

### 11.7 Personal data

Members' names, emails and writing are personal data under GDPR.

- **Erasure:** the owner's *Eliminar* removes the member row entirely and
  reassigns their threads and comments to a tombstone shown as "Miembro
  eliminado", so conversations other people took part in stay readable.
- **Access:** any member can download everything they have written from
  *Descargar mis datos*.
- **Retention:** soft-deleted posts stay in the database until removed by hand.
  If you want a real retention limit, that is a `DELETE ... WHERE deleted_at <`
  in this same cron slot — and a decision to take deliberately, not by default.