该文档主要是elasticsearch7.x版本的安装及集群配置，配合head，ik插件的安装。【备注，配置参数更新如下：cluster.name:es-7node.name:t-1network.host:10.96.141.45http.port:9200transport.tcp.port:9301node.master:truenode.data:truebootstrap.memory_lock:truediscovery.seed_hosts:["10.xx.xx.104:9300","10.xx.xx.45:9300","10.xx.xx.45:9301&quo