# Newt (Pangolin) — noble

This is the **primary** automation path for **public** hostnames to workloads in this cluster (it **replaces** in-cluster ExternalDNS). [Newt](https://github.com/fosrl/newt) is the on-prem agent that connects your cluster to a **Pangolin** site (WireGuard tunnel). The [Fossorial Helm chart](https://github.com/fosrl/helm-charts) deploys one or more instances.

**Secrets:** Never commit endpoint, Newt ID, or Newt secret in **plain** YAML. If credentials were pasted into chat or CI logs, **rotate them** in Pangolin and recreate the Kubernetes Secret.

## 1. Create the Secret

Keys must match `values.yaml` (`PANGOLIN_ENDPOINT`, `NEWT_ID`, `NEWT_SECRET`).

### Option A — SOPS (safe for GitOps)

Encrypt a normal **`Secret`** with [Mozilla SOPS](https://github.com/getsops/sops) and **age** (see **`clusters/noble/secrets/README.md`** and **`.sops.yaml`**). The repo includes an encrypted example at **`clusters/noble/secrets/newt-pangolin-auth.secret.yaml`** — edit with `sops` after exporting **`SOPS_AGE_KEY_FILE`** to your **`age-key.txt`**, or create a new file and encrypt it.

```bash
export SOPS_AGE_KEY_FILE=/absolute/path/to/home-server/age-key.txt
sops clusters/noble/secrets/newt-pangolin-auth.secret.yaml
# then:
sops -d clusters/noble/secrets/newt-pangolin-auth.secret.yaml | kubectl apply -f -
```

**Ansible** (`noble.yml`) applies all **`clusters/noble/secrets/*.yaml`** automatically when **`age-key.txt`** exists at the repo root.

### Option B — Imperative Secret (not in git)

```bash
kubectl apply -f clusters/noble/bootstrap/newt/namespace.yaml

kubectl -n newt create secret generic newt-pangolin-auth \
  --from-literal=PANGOLIN_ENDPOINT='https://pangolin.pcenicni.dev' \
  --from-literal=NEWT_ID='YOUR_NEWT_ID' \
  --from-literal=NEWT_SECRET='YOUR_NEWT_SECRET'
```

Use the Pangolin UI or [Integration API](https://docs.pangolin.net/manage/common-api-routes) (`pick-site-defaults` + `create site`) to obtain a Newt ID and secret for a new site if you are not reusing an existing pair.

## 2. Install the chart

```bash
helm repo add fossorial https://charts.fossorial.io
helm repo update
helm upgrade --install newt fossorial/newt \
  --namespace newt \
  --version 1.5.0 \
  -f clusters/noble/bootstrap/newt/values.yaml \
  --wait
```

## 3. DNS: CNAME at your DNS host + Pangolin API for routes

Pangolin does not replace your public DNS provider. Typical flow:

1. **Link a domain** in Pangolin (organization **Domains**). For **CNAME**-style domains, Pangolin shows the hostname you must **CNAME** to at Cloudflare / your registrar (see [Domains](https://docs.pangolin.net/manage/common-api-routes#list-domains)).
2. **Create public HTTP resources** (and **targets** to your Newt **site**) via the [Integration API](https://docs.pangolin.net/manage/integration-api) — same flows as the UI. Swagger: `https://<your-api-host>/v1/docs` (self-hosted: enable `enable_integration_api` and route `api.example.com` → integration port per [docs](https://docs.pangolin.net/self-host/advanced/integration-api)).

Minimal patterns (Bearer token = org or root API key):

```bash
export API_BASE='https://api.example.com/v1'   # your Pangolin Integration API base
export ORG_ID='your-org-id'
export TOKEN='your-integration-api-key'

# Domains already linked to the org (use domainId when creating a resource)
curl -sS -H "Authorization: Bearer ${TOKEN}" \
  "${API_BASE}/org/${ORG_ID}/domains"

# Create an HTTP resource on a domain (FQDN = subdomain + base domain for NS/wildcard domains)
curl -sS -X PUT -H "Authorization: Bearer ${TOKEN}" -H 'Content-Type: application/json' \
  "${API_BASE}/org/${ORG_ID}/resource" \
  -d '{
    "name": "Example app",
    "http": true,
    "domainId": "YOUR_DOMAIN_ID",
    "protocol": "tcp",
    "subdomain": "my-app"
  }'

# Point the resource at your Newt site backend (siteId from list sites / create site; ip:port inside the tunnel)
curl -sS -X PUT -H "Authorization: Bearer ${TOKEN}" -H 'Content-Type: application/json' \
  "${API_BASE}/resource/RESOURCE_ID/target" \
  -d '{
    "siteId": YOUR_SITE_ID,
    "ip": "10.x.x.x",
    "port": 443,
    "method": "http"
  }'
```

Exact JSON fields and IDs differ by domain type (**ns** vs **cname** vs **wildcard**); see [Common API routes](https://docs.pangolin.net/manage/common-api-routes) and Swagger.

### Authentik on a public name

Use **`noble_authentik_ingress_extra_hosts`** (see **`ansible/roles/noble_authentik/README.md`**) so the Authentik Ingress (and **cert-manager** SANs) include your public FQDN, then create the Pangolin **HTTP** resource + **target** to the same Traefik **:443** endpoint as other apps. One Newt site can carry many hostnames.

### What to put in Pangolin (resource + target)

1. **Public hostname** — the FQDN users type in the browser (must match **`noble_authentik_ingress_extra_hosts`** and your **CNAME** at the DNS host Pangolin documents for that domain).
2. **Site** — the Pangolin **site** that owns your **Newt** pair (same **`NEWT_ID`** / **`NEWT_SECRET`** as the cluster Secret). In the UI: **Sites** → pick the site connected to this cluster.
3. **Target `ip`** — an address **reachable from inside the tunnel** to **Traefik HTTPS**. On noble this is usually the Traefik **LoadBalancer** IP (repo pins **`192.168.50.211`** in **`clusters/noble/bootstrap/traefik/values.yaml`**). Confirm live:

   `kubectl -n traefik get svc -l app.kubernetes.io/name=traefik -o wide`

   Use **`EXTERNAL-IP`** (or **`LOAD_BALANCER_IP`** from the Service status) as **`ip`**. If Newt runs **in** the cluster, that MetalLB/LAN VIP is correct; if you run Newt elsewhere, use whatever L3 path reaches Traefik from that host.
4. **Target `port`** — **`443`** (TLS to Traefik; SNI carries the public hostname).
5. **Target `method`** — **`http`** in the Integration API examples above (TLS is still terminated at Traefik; Pangolin’s field names follow their docs).

Discovery in Pangolin’s UI: **Domains** (see required CNAME) → **Resources** → **Add** HTTP resource for the subdomain/FQDN → **Targets** / **Backends** → attach **site** + **ip:port**. Official flow: [Domains](https://docs.pangolin.net/manage/common-api-routes#list-domains), [Integration API](https://docs.pangolin.net/manage/integration-api), and your deployment’s **Swagger** at **`https://<integration-api-host>/v1/docs`** when enabled.

## LAN vs internet

- **LAN / VPN:** point **`*.apps.noble.lab.pcenicni.dev`** at the Traefik **LoadBalancer** (**`192.168.50.211`**) with local or split-horizon DNS if you want direct in-lab access.
- **Internet-facing:** use Pangolin **resources** + **targets** to the Newt **site**; public names rely on **CNAME** records at your DNS provider per Pangolin’s domain setup, not on ExternalDNS in the cluster.