cron_d "remove_old_backups_postgresql_cluster_#{postgresql_name_version.sub('.', '-')}" do
      command "#{command_prefix} envdir /etc/#{backup_utility}.d/#{postgresql_name_version}/env #{backup_utility_bin} delete --confirm retain #{num_to_retain}"
      user 'postgres'
      minute full_backup_time[:minute]
      hour full_backup_time[:hour]