config        => {
      'node.name'    => $::fqdn,
      'cluster.name' => 'storesquare_production',
      'discovery.zen.minimum_master_nodes' => 3,
      'discovery.zen.ping.multicast' => false,
      'discovery.zen.ping.unicast.hosts' => [ip1,ip2,ip3],
      'gateway.recover_after_nodes' => 2,
      'gateway.expected_nodes' => 3,
      'gateway.recover_after_time' => '15m',
      'index.number_of_replicas' => 1,
      'index.number_of_shards' => 5,
      'network.host' => $::ipaddress,
      'bootstrap.mlockall' => 'true', # lock memory, don't swap. We should also put this in /etc/elasticsearch/default: MAX_LOCKED_MEMORY=unlimited
    },