[%
  # Returns the hostname of the node calling this function.
  #
  # @return out		The hostname of the node calling this function.
-%]
[% PERL -%]
# don't trust hostname(1) as this might differ from the hostname of
# the system which runs the installer, instead rely on /etc/hostname
open my $hh, '<', '/etc/hostname' or die "Error opening /etc/hostname";
my $hostname = <$hh>;
close $hh;
chomp $hostname;
die "Fatal error retrieving hostname [$hostname]" unless length $hostname;
$stash->set(out => $hostname);
[% END -%]