server_cloud_ladkau_de/docs/runbook-configuration.md

# Configuration Runbook

First-run configuration steps to perform after the Ansible playbook has
provisioned the server. See `runbook-provisioning.md` for the provisioning steps.

## 1. Verify all services are reachable

Before configuring individual services, confirm every HTTPS endpoint is up and
TLS certificates are valid. Run this from your local machine:

```bash
bash scripts/check-services.sh
```

The script checks these endpoints and verifies the expected HTTP status code:

| URL | Expected | Notes |
|-----|----------|-------|
| `https://cloud.ladkau.de/dashboard/` | 401 | Basic-auth prompt — correct without credentials |
| `https://gitea.ladkau.de` | 200 | Gitea sign-in page |
| `https://nextcloud.ladkau.de` | 200 | First visit triggers setup and takes 1–2 min |
| `https://sso.ladkau.de/realms/master` | 200 | Keycloak realm JSON — first start takes ~90 s |
| `https://mail.ladkau.de` | 200 | Roundcube webmail login |
| `https://cr.ladkau.de/v2/` | 401 | Registry API — auth required, correct without credentials |
| `https://k8s.ladkau.de` | 200 | Placeholder page |

A `000` result means the connection was refused or timed out — a container that
did not start. Keycloak and Nextcloud may return `502` for up to 90 seconds on
first boot; wait and retry before investigating.

Once the script passes, open `https://cloud.ladkau.de/dashboard/` in a browser
and authenticate with the `traefik_dashboard_users` credentials to verify the
dashboard loads correctly.

## 2. Keycloak

Keycloak is the identity provider for all services. Configure it first so that
Gitea and Nextcloud can be wired up to SSO in the steps that follow.

Keycloak takes ~90 seconds to start on first boot. If the login page at
`https://sso.ladkau.de` is not immediately available, wait and retry.

### 2.1 Log in and change the admin password

1. Go to `https://sso.ladkau.de` and sign in with username `admin` and the
   value of `keycloak_admin_password` from the vault.
2. Click the **admin** dropdown (top right) → **Manage account** →
   **Password** → set a new password.

The bootstrap credentials are only used on first start. After changing the
password, the vault value is no longer authoritative — store the new password
in your password manager.

### 2.2 Create an application realm

1. In the left sidebar, click the realm dropdown (shows **master**) →
   **Create realm**.
2. Set **Realm name** to `ladkau` and click **Create**.
3. Make sure the `ladkau` realm is selected in the sidebar for all steps below.

The `master` realm is for Keycloak administration only. All application users
and clients live in `ladkau`.

### 2.3 Create users

For each user you want to be able to log in to Gitea and Nextcloud:

1. **Users** → **Add user**.
2. Fill in **Username**, **Email**, **First name**, **Last name** → **Create**.
3. Go to the **Credentials** tab → **Set password**.
4. Enter a password, turn off **Temporary**, and click **Save**.

### 2.4 Create the Gitea OIDC client

1. **Clients** → **Create client**.
2. **Client type**: OpenID Connect — **Client ID**: `gitea` → **Next**.
3. Turn **Client authentication** on (confidential client) → **Next**.
4. **Valid redirect URIs**: `https://gitea.ladkau.de/user/oauth2/keycloak/callback`
5. **Web origins**: `https://gitea.ladkau.de` → **Save**.
6. Go to the **Credentials** tab and copy the **Client secret** — you will
   need it in step 3.

### 2.5 Create the Nextcloud OIDC client

1. **Clients** → **Create client**.
2. **Client type**: OpenID Connect — **Client ID**: `nextcloud` → **Next**.
3. Turn **Client authentication** on → **Next**.
4. **Valid redirect URIs**: `https://nextcloud.ladkau.de/apps/user_oidc/code`
5. **Valid post logout redirect URIs**: `https://nextcloud.ladkau.de/*`
6. **Web origins**: `https://nextcloud.ladkau.de` → **Save**.
7. Go to the **Credentials** tab and copy the **Client secret** — you will
   need it in step 4.

## 3. Gitea

### 3.1 Create the admin account

1. Go to `https://gitea.ladkau.de` — Gitea shows an initial configuration
   dialog on the first visit.
2. Scroll to the bottom of the form to the **Administrator Account Settings**
   section and fill in the admin username, email, and password.
3. Click **Install Gitea**.

Gitea initialises the database and creates the admin account in one step.
Public registration is closed — only users authenticating via Keycloak can
get an account (controlled by `ALLOW_ONLY_EXTERNAL_REGISTRATION`).

### 3.2 Connect Gitea to Keycloak

1. In Gitea, go to **Site Administration** → **Identity & Access** →
   **Authentication Sources** → **Add Authentication Source**.
2. Set **Authentication type** to **OAuth2**.
3. Set **OAuth2 provider** to **OpenID Connect**.
4. Fill in:
   - **Name**: `keycloak`
   - **Client ID**: `gitea`
   - **Client secret**: the secret copied in step 2.4
   - **OpenID Connect Auto Discovery URL**:
     `https://sso.ladkau.de/realms/ladkau/.well-known/openid-configuration`
5. Click **Add Authentication Source**.

Users can now sign in via **Sign in with keycloak** on the Gitea login page.

## 4. Nextcloud

The admin credentials are set via `nextcloud_admin_user` and
`nextcloud_admin_password` in the vault. The first HTTP request triggers
installation, which takes a minute or two.

### 4.1 Log in

1. Go to `https://nextcloud.ladkau.de` and sign in with the admin credentials
   from the vault.

### 4.2 Connect Nextcloud to Keycloak

1. Go to **Apps** → search for **OpenID Connect user backend** → **Download
   and enable**.
2. Go to **Administration settings** → **OpenID Connect** → **Add provider**.
3. Fill in:
   - **Identifier**: `keycloak`
   - **Client ID**: `nextcloud`
   - **Client secret**: the secret copied in step 2.5
   - **Discovery endpoint**:
     `https://sso.ladkau.de/realms/ladkau/.well-known/openid-configuration`
4. Click **Save**.

Users can now sign in to Nextcloud with their Keycloak credentials via the
**Log in with keycloak** button.

## 5. Mail (Dovecot + Roundcube + Fetchmail)

The mail stack runs a local Dovecot IMAP server. Roundcube connects to it
internally. External IMAP clients connect to `mail.ladkau.de:993` (IMAPS —
TLS terminated by Traefik). Fetchmail polls external POP3 accounts and
delivers to Dovecot.

Dovecot users and fetchmail accounts are configured in the vault before
provisioning — see step 4 of `runbook-provisioning.md`. To add users or
accounts after initial deployment, edit the vault and redeploy:

```bash
ansible-vault edit ansible/group_vars/all/vault.yml
ansible-playbook -i ansible/inventory.ini ansible/site.yml --tags mail --ask-vault-pass
```

### 5.1 Import mail from an old Dovecot server

If migrating from an existing Dovecot server, sync the Maildir directly:

```bash
# Run on the old server — syncs to the new server's maildir volume
rsync -av --progress /var/mail/alice/Maildir/ \
  root@217.154.207.148:/opt/mail/maildir/alice/Maildir/

# Fix ownership for Dovecot's vmail user (UID 5000)
ssh root@217.154.207.148 "chown -R 5000:5000 /opt/mail/maildir/alice"
```

Alternatively, use `imapsync` to copy via IMAP from the old server to the
new one (works without direct server access):

```bash
imapsync \
  --host1 old.server.com --user1 alice --password1 oldpass \
  --host2 mail.ladkau.de  --user2 alice --password2 newpass \
  --port2 993 --ssl2
```

### 5.2 Connect an IMAP client

| Setting   | Value                |
|-----------|----------------------|
| Server    | `mail.ladkau.de`     |
| Port      | `993`                |
| Security  | SSL/TLS              |
| Username  | as set in vault      |

## 6. Container registry

```bash
# Login
docker login cr.ladkau.de

# Push
docker tag myimage:latest cr.ladkau.de/myimage:latest
docker push cr.ladkau.de/myimage:latest

# Pull
docker pull cr.ladkau.de/myimage:latest
```

Registry users are managed via `registry_users` in the vault — store plaintext
passwords, Ansible generates bcrypt hashes at deploy time. To add or rotate a
user, edit the vault and redeploy:

```bash
ansible-vault edit ansible/group_vars/all/vault.yml
ansible-playbook -i ansible/inventory.ini ansible/site.yml --tags registry --ask-vault-pass
```