home-server/applications/20-databases/postgresql.yaml

---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: postgres-pv
  namespace: database
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: local-path
  hostPath:
    path: /dpool/services/postgres/data

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-pvc
  namespace: database
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: local-path
  resources:
    requests:
      storage: 5Gi
  volumeName: postgres-pv

---
apiVersion: apps/v1
kind: Deployment
metadata:
  name: postgres
  namespace: database
spec:
  replicas: 1
  selector:
    matchLabels:
      app: postgres
  template:
    metadata:
      labels:
        app: postgres
    spec:
      nodeSelector:
        role: dck
      containers:
        - name: postgres
          image: postgres:15
          ports:
            - containerPort: 5432
          envFrom:
            - secretRef:
                name: postgres-secret
          volumeMounts:
            - name: postgres-data
              mountPath: /var/lib/postgresql/data
      volumes:
        - name: postgres-data
          persistentVolumeClaim:
            claimName: postgres-pvc

---
apiVersion: v1
kind: Service
metadata:
  name: postgres
  namespace: database
spec:
  selector:
    app: postgres
  ports:
    - port: 5432
      targetPort: 5432

---
apiVersion: v1
kind: PersistentVolume
metadata:
  name: postgres-backup-pv
spec:
  capacity:
    storage: 5Gi
  accessModes:
    - ReadWriteOnce
  persistentVolumeReclaimPolicy: Retain
  storageClassName: local-path
  hostPath:
    path: /dpool/services/postgres/backup

---
apiVersion: v1
kind: PersistentVolumeClaim
metadata:
  name: postgres-backup-pvc
  namespace: database
spec:
  accessModes:
    - ReadWriteOnce
  storageClassName: local-path
  resources:
    requests:
      storage: 5Gi


---
apiVersion: batch/v1
kind: CronJob
metadata:
  name: postgres-backup
  namespace: database
spec:
  schedule: "0 2 * * *"  # Every day at 2 AM
  jobTemplate:
    spec:
      template:
        spec:
          nodeSelector:
            role: dck
          restartPolicy: OnFailure
          containers:
            - name: pg-backup
              image: postgres:15
              envFrom:
                - secretRef:
                    name: postgres-secret
              command:
                - /bin/sh
                - -c
                - |
                  mkdir -p /backup
                  PGPASSWORD=$POSTGRES_PASSWORD pg_dump -U $POSTGRES_USER -h localhost $POSTGRES_DB > /backup/backup-$(date +'%Y-%m-%d').sql
              volumeMounts:
                - name: backup-volume
                  mountPath: /backup
          volumes:
            - name: backup-volume
              persistentVolumeClaim:
                claimName: postgres-backup-pvc