$servers_by_datacenter_category = loadyaml('hieradata/common/profile/mediawiki/mcrouter_wancache.yaml')['profile::mediawiki::mcrouter_wancache::shards']
$gutters_by_datacenter = $servers_by_datacenter_category['gutter']
$gutter_pools = $gutters_by_datacenter.map |$dc, $servers| {
  $servers.map |$shard_slot, $address| {
    notice("${address['host']}")
  }
}