# VNCmail+ — Admin Deployment Guide (microk8s)

Deploy VNCmail+ (VNC's Bulwark fork) as a container at **`vncmail.sandbox.vnc.de`**,
**alongside** the existing `bulwark.sandbox.vnc.de`. Plain `kubectl apply` — no
GitOps needed.

> Why a container (not Vercel): Bulwark is stateful — it writes settings/admin/
> telemetry to `/app/data`, which needs persistent volumes.

---

## 1. What you are deploying

| # | Object | File | Purpose |
|---|--------|------|---------|
| 1 | Namespace `vncmail` | `namespace.yaml` | Isolates the app |
| 2 | 4× PersistentVolumeClaim | `pvc.yaml` | `/app/data/{settings,admin,admin-state,telemetry}` |
| 3 | Secret `vncmail-env` | `secret.yaml` *(you create it)* | App config (JMAP URL, session secret, branding) |
| 4 | Secret `ghcr-pull` | *(you create it — command below)* | Pull the private image from GHCR |
| 5 | Deployment `vncmail-plus` | `deployment.yaml` | The app pod |
| 6 | Service `vncmail-plus` | `service.yaml` | ClusterIP :80 → pod :3000 |
| 7 | Ingress `vncmail-plus` | `ingress.yaml` | TLS host `vncmail.sandbox.vnc.de` |

**Image:** `ghcr.io/brvncde-dotcom/vncmail-plus-dev:latest`
(built automatically by CI from the `dev` branch). For anything beyond the
sandbox, pin a digest — see §5.

---

## 2. Pre-flight — confirm 3 cluster values (2 min)

The manifests use microk8s defaults. **Copy the exact values the existing
Bulwark uses** so VNCmail+ matches your cluster:

```bash
# Find bulwark's ingress and read off its class + cert-manager annotations:
kubectl get ingress -A | grep -i bulwark
kubectl get ingress <bulwark-ingress-name> -n <bulwark-ns> -o yaml

# List available storage classes and ingress classes:
kubectl get sc
kubectl get ingressclass
kubectl get clusterissuer      # cert-manager issuers (if used)
```

Then edit if they differ from the defaults below:

| Value | Default in manifests | File to edit |
|-------|----------------------|--------------|
| StorageClass | `microk8s-hostpath` | `pvc.yaml` (all 4) |
| IngressClass | `public` | `ingress.yaml` |
| cert-manager issuer | `letsencrypt-prod` | `ingress.yaml` |

---

## 3. Deploy (copy-paste, in order)

```bash
cd deploy/k8s

# a) Namespace
kubectl apply -f namespace.yaml

# b) Image-pull secret — the GHCR package is private.
#    Use a GitHub PAT (classic) with the read:packages scope.
kubectl create secret docker-registry ghcr-pull \
  --namespace vncmail \
  --docker-server=ghcr.io \
  --docker-username=brvncde-dotcom \
  --docker-password='<GITHUB_PAT_read:packages>' \
  --docker-email=br@vnc.biz

# c) App config secret — copy the template, set a real SESSION_SECRET, apply.
cp secret.example.yaml secret.yaml
#    edit secret.yaml:  SESSION_SECRET: "$(openssl rand -base64 32)"
kubectl apply -f secret.yaml

# d) Everything else (PVCs, Deployment, Service, Ingress)
kubectl apply -k .
```

> Alternative to (b): make the GHCR package public
> (GitHub → Packages → vncmail-plus-dev → Package settings → Change visibility),
> then delete the `imagePullSecrets:` block from `deployment.yaml`.

---

## 4. Verify

```bash
kubectl -n vncmail rollout status deploy/vncmail-plus     # -> successfully rolled out
kubectl -n vncmail get pods,pvc,ingress

# DNS: point vncmail.sandbox.vnc.de at the same ingress IP as bulwark.sandbox.vnc.de.
# cert-manager issues TLS once DNS resolves. Then:
curl -sI https://vncmail.sandbox.vnc.de/api/health         # -> HTTP/2 200
```

Open `https://vncmail.sandbox.vnc.de` and log in with a **full** email address
(e.g. `bernd.rodler@sandbox.vnc.de`) — Stalwart authenticates the full email, not
a bare username.

---

## 5. Update to a new build

```bash
# CI rebuilds ghcr.io/brvncde-dotcom/vncmail-plus-dev on every push to `dev`.
kubectl -n vncmail rollout restart deploy/vncmail-plus     # pulls :latest (imagePullPolicy: Always)

# Production: pin a digest instead of :latest so rollouts are deterministic.
kubectl -n vncmail set image deploy/vncmail-plus \
  vncmail-plus=ghcr.io/brvncde-dotcom/vncmail-plus-dev@sha256:<digest>
```

Rollback: `kubectl -n vncmail rollout undo deploy/vncmail-plus`

---

## 6. Troubleshooting

| Symptom | Cause / fix |
|---------|-------------|
| Pod `ImagePullBackOff` | `ghcr-pull` secret missing/expired, or package still private. Recreate the secret (§3b) or make the package public. |
| Pod `CrashLoopBackOff`, logs show `EACCES`/permission on `/app/data` | Volume not writable by uid 1001. `securityContext.fsGroup: 1001` is set in `deployment.yaml` — keep it; some storage drivers also need it on the PVC. |
| PVC stuck `Pending` | Wrong `storageClassName` in `pvc.yaml`. Set it to one from `kubectl get sc`. |
| Ingress has no address / no cert | Wrong `ingressClassName` or cert issuer. Match bulwark's (§2). Check `kubectl -n vncmail describe ingress vncmail-plus`. |
| Login shows "Ein Fehler ist aufgetreten" | Use the **full** email (`user@sandbox.vnc.de`), not a bare username. |
| Can't reach Stalwart | Check `JMAP_SERVER_URL` in the secret = `https://stalwart.sandbox.vnc.de`. |
