# Ansible Domo

Going for an Esperanto naming theme.

Portable Ansible provisioning for Twirre infrastructure. The current layout uses Ubuntu 24.04 package names, `/srv` for deployed services, `/etc` for config, and systemd-managed apps, so it will not work on Debian without adjustment.

## What this provisions

- Base host packages, timezone, and static content roots
- SSH admin users with key-based login
- A dedicated `backupagent` user for rsync-based backups with restricted SSH settings and passwordless `sudo /usr/bin/rsync`
- Docker from distro packages
- Bun installed to `/opt/bun` with `/usr/local/bin/bun`
- Two Bun app services: `twirre.io` and `twirre.me`
- Gitea and Docker Mailserver as Compose stacks under `/srv`
- nginx virtual hosts for the retained public domains
- apt-based certbot with ACME webroot support
- WireGuard with `wg-quick@wg0` enabled at boot
- fail2ban with the audit-derived SSH jail settings

## Layout

- `site.yml`: top-level playbook
- `inventory/hosts.yml`: example inventory
- `group_vars/all/main.yml`: shared variables and service declarations
- `group_vars/all/vault.example.yml`: secrets shape to move into an encrypted Vault file
- `roles/`: reusable server roles

## Secrets

Create an encrypted Vault file at `group_vars/all/vault.yml` based on `group_vars/all/vault.example.yml`. The playbook will use Vault variables when present and otherwise fall back to safe placeholders for syntax checking.

Example:

```bash
uv run ansible-vault create group_vars/all/vault.yml
```

## Usage

Update the inventory and variables first, especially:

- `inventory/hosts.yml`
- `group_vars/all/main.yml`
- `group_vars/all/vault.yml`
- repository URLs and domains for the Bun apps
- `backupagent.authorized_keys`

Run a syntax check:

```bash
uv run ansible-playbook --syntax-check site.yml
```

Run the playbook:

```bash
uv run ansible-playbook site.yml --ask-vault-pass
```

## Result

- `twirre.io`: Bun source checkout in `/srv/twirre/twirre.io`; runtime config in `/etc/twirre-io/app.env`; data in `/var/lib/twirre-io/app.sqlite3`, public files in `/var/lib/twirre-io/files`, and hidden files in `/var/lib/twirre-io/hfiles`; systemd unit `twirre_io.service`.
- `twirre.me`: Bun source checkout in `/srv/twirre/twirre.me`; runtime config in `/etc/twirre-me/app.env`; data directory reserved at `/var/lib/twirre-me`; systemd unit `twirre_me.service`.
- `Gitea`: Docker Compose stack in `/srv/gitea/compose.yaml`; persistent application data in `/srv/gitea/data`; systemd unit `gitea-compose.service`; public HTTP behind nginx at `git.twirre.io`, SSH on port `2222`.
- `Mailserver`: Docker Compose stack in `/srv/mail/compose.yaml` with environment in `/srv/mail/mailserver.env`; mail data, state, logs, and docker-mailserver config under `/srv/mail/docker-data/dms/`; Let's Encrypt certificates mounted from `/etc/letsencrypt`; systemd unit `mailserver-compose.service`.
- `lagrange.meulenbelt.nl`: static placeholder site rooted at `/srv/lagrange`.
- `map.twirre.io`, `chat.twirre.io`, and `overleaf.twirre.io`: nginx reverse proxies only; no source code or data is stored on this host for these services.
- Shared web infrastructure: nginx site configs in `/etc/nginx/sites-available/` with enabled symlinks in `/etc/nginx/sites-enabled/`; ACME webroot in `/var/www/letsencrypt`; certificates in `/etc/letsencrypt`.

## Notes

- nginx falls back to snakeoil certificates until a matching ACME certificate already exists on disk.
- A run with `certbot_manage_certificates: true` requests certificates during that playbook run. If DNS and HTTP reachability are correct, issuance happens immediately.
- `mailserver` starts only after its live Let's Encrypt certificate exists on disk, so the same run that issues `mail.twirre.io` can also bring up Docker Mailserver.
- ACME issuance is disabled by default through `certbot_manage_certificates: false` so the first provisioning run can complete before DNS and public reachability are finalized.

## Manual post-provisioning steps

- Set up ACME DNS records for the domains and enable `certbot_manage_certificates: true` before the next playbook run.
- Restore backups for Gitea and Mailserver data.

## Future plans

- [ ] Encryption for non-boot files with LUKS (/home, /srv, /var/lib/<my-services>).