apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: db1
  namespace: cluster1
spec:
  serviceName: db1
  replicas: 1
  selector:
    matchLabels:
      app: db1
  template:
    metadata:
      labels:
        app: db1
    spec:
      containers:
        - name: postgres
          image: postgres:15-alpine
          ports:
            - containerPort: 5432
          env:
            - name: POSTGRES_DB
              valueFrom:
                secretKeyRef:
                  name: cluster1-postgres-secret
                  key: DB1_NAME
            - name: POSTGRES_USER
              valueFrom:
                secretKeyRef:
                  name: cluster1-postgres-secret
                  key: POSTGRES_USER
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: cluster1-postgres-secret
                  key: POSTGRES_PASSWORD
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          volumeMounts:
            - name: db1-data
              mountPath: /var/lib/postgresql/data
            - name: init-scripts
              mountPath: /docker-entrypoint-initdb.d/01-init.sql
              subPath: db1-init.sql
            - name: init-scripts
              mountPath: /docker-entrypoint-initdb.d/02-data.sql
              subPath: db1-data.sql
      volumes:
        - name: db1-data
          persistentVolumeClaim:
            claimName: db1-data
        - name: init-scripts
          configMap:
            name: cluster1-init-scripts
---
apiVersion: v1
kind: Service
metadata:
  name: db1
  namespace: cluster1
spec:
  type: ClusterIP
  selector:
    app: db1
  ports:
    - name: postgres
      port: 5432
      targetPort: 5432