code: def make(parser):
      
      mgr_parser = parser.add_subparsers(dest='subcommand')
      mgr_parser.required = True
  
      mgr_create = mgr_parser.add_parser(
          'create',
          help='Deploy Ceph MGR on remote host(s)'
      )
      mgr_create.add_argument(
          'mgr',
          metavar='HOST[:NAME]',
          nargs='+',
          type=colon_separated,
          help='host (and optionally the daemon name) to deploy on',
          )
      parser.set_defaults(
          func=mgr,
          )
docs: Ceph MGR daemon management