db_statefulset.yaml

apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: postgresql
  labels:
    app: postgresql
spec:
  serviceName: "postgresql"
  replicas: 1
  selector:
    matchLabels:
      app: postgresql
  template:
    metadata:
      labels:
        app: postgresql
    spec:
      containers:
        - name: postgresql
          image: postgres:15
          imagePullPolicy: IfNotPresent
          resources:
            limits:
              cpu: 1000m
              ephemeral-storage: 1000Mi
              memory: 1000Mi
            requests:
              cpu: 100m
              ephemeral-storage: 100Mi
              memory: 100Mi
          ports:
            - containerPort: 5432
          volumeMounts:
            - name: postgres-storage
              mountPath: /var/lib/postgresql/data
          env:
            - name: POSTGRES_USER
              value: yourusername
            - name: POSTGRES_PASSWORD
              value: yourpassword
            - name: POSTGRES_DB
              value: YourDatabaseName
            - name: HOST
              value: "postgresql"
      volumes:
        - name: postgres-storage
          persistentVolumeClaim:
            claimName: postgres-pvc