puppet-logstash/files/es-logstash-template.json

{
    "logstash_settings" : {
        "template" : "logstash*",
        "settings" : {
            "index.routing.allocation.total_shards_per_node" : "3",
            "index.translog.flush_threshold_ops" : "50000",
            "index.cache.field.type" : "soft"
        }
    }
}