apiVersion: batch/v1
kind: CronJob
metadata:
  name: postgres-backup
spec:
  schedule: "0 3 * * *"
  jobTemplate:
    spec:
      ttlSecondsAfterFinished: 300
      template:
        spec:
          containers:
          - name: backup
            image: postgres:15.2
            command: ["/bin/bash", "/scripts/backup.sh"]
            env:
              - name: PGPASSWORD
                valueFrom:
                  secretKeyRef:
                  name: database-secrets
                  key: postgres-password
            volumeMounts:
              - name: script
                mountPath: /scripts
              - name: backup-volume
                mountPath: /backups
                subPath: arrDB-Backups
          restartPolicy: OnFailure
          volumes:
            - name: script
              configMap:
                name: postgres-backup-script
                defaultMode: 0755
            - name: backup-volume
              persistentVolumeClaim:
                claimName: postgres-backup-pvc
---
apiVersion: v1
kind: ConfigMap
metadata:
  name: postgres-backup-script
data:
  backup.sh: |
    #!/bin/bash
    set -e
    echo "[INFO] $(date) - Starting PostgreSQL backup"
    BACKUP_FILE="/backups/pg_$(date +%F).sql"
    pg_dumpall -h arr-db -p 5433 -U postgres | tee "$BACKUP_FILE"
    echo "[INFO] $(date) - Backup written to $BACKUP_FILE"
    echo "[INFO] $(date) - Backup size:$(sleep 5) $(du -sh "$BACKUP_FILE" | cut -f1)"
    echo "[INFO] $(date) - Cleaning backups older than 7 days"
    find /backups -type f -name "pg_*.sql" -mtime +7 -print -delete
    echo "[INFO] $(date) - Cleanup done"