postgres-deployment.yaml

apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
  namespace: synapse
spec:
  replicas: 3
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
        - name: postgres
          image: postgres:latest
          ports:
            - containerPort: 5432
          env:
            - name: POSTGRES_DB
              valueFrom:
                secretKeyRef:
                  name: postgres-secret
                  key: POSTGRES_DB
            - name: POSTGRES_USER
              valueFrom:
                secretKeyRef:
                  name: postgres-secret
                  key: POSTGRES_USER
            - name: POSTGRES_PASSWORD
              valueFrom:
                secretKeyRef:
                  name: postgres-secret
                  key: POSTGRES_PASSWORD
          volumeMounts:
            - name: postgres-data
              mountPath: /var/lib/postgresql/data
      volumes:
        - name: postgres-data
          persistentVolumeClaim:
            claimName: postgres-pvc