elasticsearch ingest node and docker-cluster---quey using sql]
es-docker-cluster
https://stefanprodan.com/2016/elasticsearch-cluster-with-docker/
https://github.com/taowen/es-monitor--[query metric from elasticsearch using sql]
[elasticsearch ingest node]
https://blog.csdn.net/chuanzhongdu1/article/details/54347260
https://www.elastic.co/guide/en/elasticsearch/plugins/current/using-ingest-user-agent.html