ElasticSearch 9200和9300端口区别

9200作为Http协议，主要用于外部通讯

9300作为Tcp协议，jar之间就是通过tcp协议通讯

ES集群之间是通过9300进行通讯

原文：​​https://elk-docker.readthedocs.io/#usage​​

Elasticsearch's transport interface on port 9300. Use the -p 9300:9300 option with the docker command above to publish it. This transport interface is notably used by Elasticsearch's Java client API, and to run Elasticsearch in a cluster.

译文：Elasticsearch在端口9300上的传输接口。使用-p 9300:9300选项和上面的docker命令来发布它。这个传
输接口被Elasticsearch的Java客户端API使用，并用于在集群中运行Elasticsearch。