code: def catch_mon_errors(conn, logger, hostname, cfg, args):
      
      monmap = mon_status_check(conn, logger, hostname, args).get('monmap', {})
      mon_initial_members = get_mon_initial_members(args, _cfg=cfg)
      public_addr = cfg.safe_get('global', 'public_addr')
      public_network = cfg.safe_get('global', 'public_network')
      mon_in_monmap = [
          mon.get('name')
          for mon in monmap.get('mons', [{}])
          if mon.get('name') == hostname
      ]
      if mon_initial_members is None or not hostname in mon_initial_members:
              logger.warning('%s is not defined in `mon initial members`', hostname)
      if not mon_in_monmap:
          logger.warning('monitor %s does not exist in monmap', hostname)
          if not public_addr and not public_network:
              logger.warning('neither `public_addr` nor `public_network` keys are defined for monitors')
              logger.warning('monitors may not be able to form quorum')
docs: Make sure we are able to catch up common mishaps with monitors
      and use that state of a monitor to determine what is missing
      and warn apropriately about it.