exec{ 'primary-backup-job':
    command     => '/path/primary-backup-script.py',
    require     => File['/path/primary-backup-script.py'],
    refreshonly => true,
    }

# Schedule cron job only after primary backup is completed.
cron{ schedule-secondary-backup:
    command => "/path/secondary-backup-script.py",
    require => Exec['primary-backup-job'],
    user    => root,
    hour    => 05,
    minute  => 00,
    weekday => 1-5;
    }