Docker环境中Elasticsearch的安装
]https://wenchao.ren/archives/category/elasticsearch/page/2
[ElasticSearch Aggregations 分析]https://yq.aliyun.com/articles/60251
https://www.loggly.com/blog/nine-tips-configuring-elasticsearch-for-high-performance/
是不是说我们需要把每个batch之间的间隔缩短，把每次batch的size调大？比如batch.size = 1500,
batch.delay = 500，已防止出现429的问题？
http://blog.csdn.net/u013613428/article/details/77963604
http://www.cnblogs.com/haoliansheng/p/5369578.html
es: throughout
logstash -f ../*.conf -b 500 -w 8 | pv -abt >/dev/null