"http.cors.allow-origin":"*",
			 "discovery.type":"single-node",
			 "cluster.allocator.existing_shards_allocator.batch_enabled":"true",
			 <!--
			 "node.name":"search_engine",
			 "discovery.seed_hosts":"search_engine",
			 "cluster.initial_cluster_manager_nodes":"search_engine",
			 "node.roles":"cluster_manager,data,ingest,ml",
			 -->
			 "indices.breaker.total.limit":"100%",
			 "action.auto_create_index":"-*"}

// is returned as a separate string.
func (l EndpointServerPools) GridHosts() (gridHosts []string, gridLocal string) {
	seenHosts := set.NewStringSet()
	for _, ep := range l {
		for _, endpoint := range ep.Endpoints {
			u := endpoint.GridHost()
			if seenHosts.Contains(u) {
				continue
			}
			seenHosts.Add(u)

			// Set local endpoint
			if endpoint.IsLocal {
				gridLocal = u
			}