stack.basicstack.de/apps/pangolin/postgres.yaml

---
# PostgreSQL PersistentVolumeClaim
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: pangolin-postgres-data
  namespace: pangolin
  annotations:
    argocd.argoproj.io/sync-options: Delete=false
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: hcloud-volumes-encrypted
  resources:
    requests:
      storage: 10Gi
---
# PostgreSQL Service (headless-friendly ClusterIP)
apiVersion: v1
kind: Service
metadata:
  name: pangolin-postgres
  namespace: pangolin
  labels:
    app: pangolin-postgres
spec:
  type: ClusterIP
  selector:
    app: pangolin-postgres
  ports:
    - name: postgres
      port: 5432
      targetPort: 5432
      protocol: TCP
---
# PostgreSQL Deployment (single-replica; PVC is RWO)
apiVersion: apps/v1
kind: Deployment
metadata:
  name: pangolin-postgres
  namespace: pangolin
  labels:
    app: pangolin-postgres
spec:
  replicas: 1
  strategy:
    type: Recreate
  selector:
    matchLabels:
      app: pangolin-postgres
  template:
    metadata:
      labels:
        app: pangolin-postgres
    spec:
      securityContext:
        fsGroup: 999
      containers:
        - name: postgres
          image: postgres:17.5
          imagePullPolicy: IfNotPresent
          ports:
            - containerPort: 5432
              name: postgres
          env:
            - name: POSTGRES_USER
              valueFrom:
                secretKeyRef:
                  name: pangolin-postgres-secrets
                  key: postgres-user
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: pangolin-postgres-secrets
                  key: postgres-password
            - name: POSTGRES_DB
              valueFrom:
                secretKeyRef:
                  name: pangolin-postgres-secrets
                  key: postgres-db
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          volumeMounts:
            - name: data
              mountPath: /var/lib/postgresql/data
          resources:
            requests:
              memory: "256Mi"
              cpu: "100m"
            limits:
              memory: "1Gi"
              cpu: "1000m"
          readinessProbe:
            exec:
              command:
                - /bin/sh
                - -c
                - pg_isready -U "$POSTGRES_USER" -d "$POSTGRES_DB"
            initialDelaySeconds: 10
            periodSeconds: 5
            timeoutSeconds: 3
            failureThreshold: 6
          livenessProbe:
            exec:
              command:
                - /bin/sh
                - -c
                - pg_isready -U "$POSTGRES_USER" -d "$POSTGRES_DB"
            initialDelaySeconds: 30
            periodSeconds: 10
            timeoutSeconds: 5
            failureThreshold: 6
      volumes:
        - name: data
          persistentVolumeClaim:
            claimName: pangolin-postgres-data