---
apiVersion: v1
kind: Service
metadata:
  name: stalwart-postgres
  namespace: stalwart
  labels:
    app: stalwart-postgres
spec:
  type: ClusterIP
  selector:
    app: stalwart-postgres
  ports:
  - name: postgres
    port: 5432
    targetPort: 5432
    protocol: TCP
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: stalwart-postgres
  namespace: stalwart
  labels:
    app: stalwart-postgres
spec:
  serviceName: stalwart-postgres
  replicas: 1
  selector:
    matchLabels:
      app: stalwart-postgres
  template:
    metadata:
      labels:
        app: stalwart-postgres
    spec:
      affinity:
        nodeAffinity:
          requiredDuringSchedulingIgnoredDuringExecution:
            nodeSelectorTerms:
            - matchExpressions:
              - key: csi.hetzner.cloud/location
                operator: In
                values:
                - fsn1
      containers:
      - name: postgres
        image: postgres:16-alpine
        imagePullPolicy: IfNotPresent
        ports:
        - name: postgres
          containerPort: 5432
          protocol: TCP
        envFrom:
        - secretRef:
            name: stalwart-postgres-credentials
        env:
        - name: PGDATA
          value: /var/lib/postgresql/data/pgdata
        resources:
          requests:
            cpu: 250m
            memory: 512Mi
          limits:
            cpu: 500m
            memory: 1Gi
        readinessProbe:
          exec:
            command:
            - /bin/sh
            - -c
            - pg_isready -U "$POSTGRES_USER" -d "$POSTGRES_DB"
          initialDelaySeconds: 10
          periodSeconds: 10
          timeoutSeconds: 5
          failureThreshold: 6
        livenessProbe:
          exec:
            command:
            - /bin/sh
            - -c
            - pg_isready -U "$POSTGRES_USER" -d "$POSTGRES_DB"
          initialDelaySeconds: 30
          periodSeconds: 30
          timeoutSeconds: 5
          failureThreshold: 6
        volumeMounts:
        - name: postgres-data
          mountPath: /var/lib/postgresql/data
          subPath: pgdata
  volumeClaimTemplates:
  - metadata:
      name: postgres-data
    spec:
      accessModes:
      - ReadWriteOnce
      storageClassName: hcloud-volumes-encrypted
      resources:
        requests:
          storage: 10Gi