feat(stalwart): deploy Stalwart mail server with CNPG and S3

- stalwart namespace with Deployment + HPA (2-6 replicas) - CNPG PostgreSQL cluster (3 instances, 20Gi cephrbd-fast-delete) with PgBouncer pooler - S3/Ceph-RGW for blob storage (stalwart-maildata bucket, lz4 compressed) - Secrets from Vault: postgres-credentials, s3-credentials, stalwart-admin - TLS cert via cert-manager (vault-issuer) for mail.main.unkin.net - SMTP relay on port 25 (internal ClusterIP, trusted pod CIDRs) - Submission on port 587, IMAP 143/993, HTTPS 443 via LoadBalancer - HTTP port 8080 for Traefik reverse proxy (web admin at mail.k8s.syd1.au.unkin.net) - Outbound mail routed through postfix.mailgateway.svc.cluster.local:25 - Spam filtering offloaded to postfix/rspamd (disabled internally)
2026-05-24 00:48:49 +10:00
parent cbc2c1cb9f
commit 0d89a69c18
15 changed files with 740 additions and 0 deletions
@@ -0,0 +1,107 @@
+---
+apiVersion: apps/v1
+kind: Deployment
+metadata:
+  name: stalwart
+  namespace: stalwart
+spec:
+  selector:
+    matchLabels:
+      app: stalwart
+  template:
+    metadata:
+      annotations:
+        reloader.stakater.com/auto: "true"
+      labels:
+        app: stalwart
+    spec:
+      securityContext:
+        runAsUser: 2000
+        runAsGroup: 2000
+        fsGroup: 2000
+      containers:
+        - name: stalwart
+          image: ghcr.io/stalwartlabs/stalwart:v0.16.6
+          ports:
+            - containerPort: 25
+              name: smtp-relay
+              protocol: TCP
+            - containerPort: 587
+              name: submission
+              protocol: TCP
+            - containerPort: 143
+              name: imap
+              protocol: TCP
+            - containerPort: 993
+              name: imaps
+              protocol: TCP
+            - containerPort: 443
+              name: https
+              protocol: TCP
+            - containerPort: 8080
+              name: http-internal
+              protocol: TCP
+            - containerPort: 9090
+              name: metrics
+              protocol: TCP
+          env:
+            - name: POSTGRES_PASSWORD
+              valueFrom:
+                secretKeyRef:
+                  name: postgres-credentials
+                  key: password
+            - name: S3_ACCESS_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: s3-credentials
+                  key: access_key
+            - name: S3_SECRET_KEY
+              valueFrom:
+                secretKeyRef:
+                  name: s3-credentials
+                  key: secret_key
+            - name: ADMIN_PASSWORD_HASH
+              valueFrom:
+                secretKeyRef:
+                  name: stalwart-admin
+                  key: password_hash
+          livenessProbe:
+            tcpSocket:
+              port: 25
+            initialDelaySeconds: 30
+            periodSeconds: 30
+            timeoutSeconds: 5
+            failureThreshold: 3
+          readinessProbe:
+            tcpSocket:
+              port: 25
+            initialDelaySeconds: 15
+            periodSeconds: 10
+            timeoutSeconds: 3
+            failureThreshold: 3
+          resources:
+            requests:
+              cpu: 250m
+              memory: 512Mi
+            limits:
+              cpu: "2"
+              memory: 2Gi
+          volumeMounts:
+            - name: config
+              mountPath: /etc/stalwart/config.toml
+              subPath: config.toml
+              readOnly: true
+            - name: tls
+              mountPath: /etc/stalwart/tls
+              readOnly: true
+            - name: data
+              mountPath: /var/lib/stalwart
+      volumes:
+        - name: config
+          configMap:
+            name: stalwart-config
+        - name: tls
+          secret:
+            secretName: stalwart-tls
+        - name: data
+          emptyDir: {}