k43D/postgres_backup/job.yml

apiVersion: batch/v1
kind: Job
metadata:
  name: postgres-backup
spec:
  template:
    spec:
      containers:
      - name: postgres-backup
        image: postgres:15-alpine
        command: [ "/bin/sh" ]
        args: [ "-c", "sleep 3600" ]
        env:
        - name: PG_HOST
          value: postgres-postgresql
        - name: PG_USER
          value: backup
        - name: PGPASSWORD
          valueFrom:
            secretKeyRef:
              name: backupscrets
              key: pgbackupsecret
        volumeMounts:
        - name: backup-volume
          mountPath: /backup
          subPath: postgres
        - name: backup-script
          mountPath: /backup-script.sh
          subPath: backup-script.sh
          readOnly: true
      restartPolicy: OnFailure
      volumes:
      - name: backup-volume
        nfs: 
          server: 192.168.86.86
          path: /volume1/backupk8s
      - name: backup-script
        configMap:
          name: postgres-backup-script
  backoffLimit: 1