apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: postgres
provisioner: rancher.io/local-path
volumeBindingMode: WaitForFirstConsumer
---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: task-pv-volume
  namespace: database
  labels:
    type: local
spec:
  storageClassName: postgres
  capacity:
    storage: 50Gi
  accessModes:
    - ReadWriteOnce
  hostPath:
    path: "/rca/postgres/data"
---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  labels:
    deploy: postgres
    app.kubernetes.io/component: postgres
  name: postgres
  namespace: database
spec:
  accessModes:
  - ReadWriteOnce
  resources:
    requests:
      storage: 50Gi
  storageClassName: postgres
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: postgres-configuration
  namespace: database
  labels:
    app: postgres
data:
  POSTGRES_DB: postgres
  POSTGRES_USER: rootrca
  POSTGRES_PASSWORD: rca12345
---
apiVersion: apps/v1
kind: StatefulSet
metadata:
  name: postgres-statefulset
  namespace: database
  labels:
    app: postgres
spec:
  serviceName: "postgres"
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      containers:
      - name: postgres
        image: postgres:12
        envFrom:
        - configMapRef:
            name: postgres-configuration
        ports:
        - containerPort: 5432
          name: postgresdb
        volumeMounts:
        - mountPath: /var/lib/postgresql/data
          name: pv-data
      volumes:
      - name: pv-data
        persistentVolumeClaim:
          claimName: postgres
---
apiVersion: v1
kind: Service
metadata:
  name: postgres-service
  namespace: database
  labels:
    app: postgres
spec:
  ports:
  - port: 5432
    nodePort: 30080
    name: postgres
  type: NodePort
  selector:
    app: postgres