postgres.yaml

# Deployment
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres-deployment
  labels:
    app: postgres
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
        - name: postgres
          image: postgres:14
          ports:
            - containerPort: 5432
          env:
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: postgres-secret
                  key: psql-password
            - name: PGDATA
              value: /var/lib/postgresql/data/pgdata
          # Volumes
          volumeMounts:
            - name: postgres-storage
              mountPath: /var/lib/postgresql/data
            - name: postgresql-initdb
              mountPath: /docker-entrypoint-initdb.d
      volumes:
        - name: postgres-storage
          persistentVolumeClaim:
            claimName: postgres-pv-claim
        - name: postgresql-initdb
          configMap:
            name: postgresql-initdb-config
---
# Service
apiVersion: v1
kind: Service
metadata:
  name: postgres-service
spec:
  selector:
    app: postgres
  ports:
    - protocol: TCP
      port: 5432 # can be any port (unused)
      targetPort: 5432