authentication different per server

gistfile1.pl

use Rex -feature => '0.40';
use String::Escape 'string2hash';

user "root";
group mygroup => "srv02", "srv01", "srv03";
configure_auth("server.lst");

task "test", group => "mygroup", sub {
   my $output = run "uptime";
   say $output;
};


sub configure_auth {
   my ($file) = @_;
   open(my $fh, "<", $file) or die($!);
   while(my $line = <$fh>) {
      chomp $line;
      ($line =~ /^#|^;|^\s*$/) && (next);
   
      my ($srv, $option_string) = split(/ /, $line, 2);
      if($option_string) {
         my %option = string2hash($option_string); 
         my %groups = Rex::Group->get_groups;
         for my $group_name (keys %groups)  {
            my $group = $groups{$group_name};
            map {
               if($_ eq $srv) {
                  $_->set_auth(%option);
               }
            } @{ $group };
         }
      }
   }
   close($fh);
}

1;


# -----------------------------------------------------------------------------------

# server.lst file:
srv01 user=foo password=abcd
srv02 user=bar password=dcsx
srv03