1、不指定http.port和transport.tcp.port
elasticsearch2.4.0在部署叢集的時候，修改elasticsearch.yml配置檔案，不指定http.port和transport.tcp.port的時候，預設分別採用9200和9300，三個節點都採用預設配置即可。

cluster.name: es_cluster
node.name: es_node-1

network.host: 192.168.248.51
network.publish_host: 192.168.248.51

discovery.zen.ping.unicast.hosts: ["192.168.248.52"
 
,"192.168.248.53"]
discovery.zen.minimum_master_nodes: 1

2、指定http.port和transport.tcp.port
指定http.port和transport.tcp.port的話，需要在discovery.zen.ping.unicast.hosts中指定埠號

cluster.name: es_cluster
node.name: es_node-1

network.host: 192.168.248.51
network.publish_host: 192.168.248.51

http.port: 9201
transport.tcp.port
 
: 9301

discovery.zen.ping.unicast.hosts: ["192.168.248.52:9302","192.168.248.53:9303"]
discovery.zen.minimum_master_nodes: 1