homeserver/kubernetes/cloud-native-pg/pg-main-backup.yaml

apiVersion: postgresql.cnpg.io/v1
kind: ScheduledBackup
metadata:
  name: pg-main-backup 
spec:
  immediate: true
  schedule: "0 0 0 * * *"  # At midnight every day
  backupOwnerReference: self
  cluster:
    name: master-postgres