maxReservedTime: 1h  schedule: '*/10 * * * *'

Warning  FailedCreatePodContainer  2s (x144754 over 29d)  kubelet, 192.168.10.10  unable to ensure pod container exists: failed to create container for [kubepods besteffort pod12685337-1956-464c-9050-4b8551567ea2] : mkdir /sys/fs/cgroup/memory/kubepods/besteffort/pod12685337-1956-464c-9050-4b8551567ea2: cannot allocate memory

// getLastScheduledTime return the newest time need to be scheduled according last backup time.// the return time is not before now and return nil if there's no such time.func getLastScheduledTime(bs *v1alpha1.BackupSchedule, nowFn nowFn) (*time.Time, error) {  ...  var earliestTime time.Time  if bs.Status.LastBackupTime != nil {    earliestTime = bs.Status.LastBackupTime.Time  } else if bs.Status.AllBackupCleanTime != nil {    ...    earliestTime = bs.Status.AllBackupCleanTime.Time  } else {    ...    earliestTime = bs.ObjectMeta.CreationTimestamp.Time  }    ...  var scheduledTimes []time.Time  for t := sched.Next(earliestTime); !t.After(now); t = sched.Next(t) {    scheduledTimes = append(scheduledTimes, t)    ...      return nil, nil    }  }  ...  scheduledTime := scheduledTimes[len(scheduledTimes)-1]  return &scheduledTime, nil
}

func (bm *backupScheduleManager) backupGCByMaxReservedTime(bs *v1alpha1.BackupSchedule) {  ...  backupsList, err := bm.getBackupList(bs)  if err != nil {    klog.Errorf("backupGCByMaxReservedTime, err: %s", err)    return  }    var deleteCount int  for _, backup := range backupsList {    if backup.CreationTimestamp.Add(reservedTime).After(bm.now()) {      continue    }    // delete the expired backup    if err := bm.deps.BackupControl.DeleteBackup(backup); err != nil {      ...      return    }    deleteCount += 1    ...  }    if deleteCount == len(backupsList) {    // All backups have been deleted, so the last backup information in the backupSchedule should be reset    bm.resetLastBackup(bs)  }
}
func (bm *backupScheduleManager) resetLastBackup(bs *v1alpha1.BackupSchedule) {  bs.Status.LastBackupTime = nil  bs.Status.LastBackup = ""  bs.Status.AllBackupCleanTime = &metav1.Time{Time: bm.now()}}

func (bm *backupScheduleManager) getBackupList(bs *v1alpha1.BackupSchedule) ([]*v1alpha1.Backup, error) {  ...  backupLabels := label.NewBackupSchedule().Instance(bsName).BackupSchedule(bsName)  selector, err := backupLabels.Selector()  ...  backupsList, err := bm.deps.BackupLister.Backups(ns).List(selector)  ...  return backupsList, nil}