将tar.gz安装包解压三份，修改配置参数vi config/elasticsearch.yml
master节点 elasticsearch.yml
cluster.initial_master_nodes: ["node1"]
cluster.name: per_es_cluster
node.name: node1
node.master: true
node.attr.rack: r1
node.max_local_storage_nodes: 3 #这个配置限制了单节点上可以开启的ES存储实例的个数，我们需要开多个实例，因此需要把这个配置写到配置文件中，并为这个配置赋值为2或者更高
network.host: 10.4.56.105
http.port: 9200
transport.tcp.port: 9301
discovery.zen.minimum_master_nodes: 1
http.cors.enabled: true
http.cors.allow-origin: "*"
data节点1 elasticsearch.yml
cluster.name: per_es_cluster
node.name: node2
node.master: false
node.attr.rack: r1
node.max_local_storage_nodes: 3
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
network.host: 10.4.56.105
http.port: 9202
transport.tcp.port: 9302
http.cors.enabled: true
http.cors.allow-origin: "*"
discovery.zen.ping.unicast.hosts: ["10.4.56.105:9301"] #候选主节点地址
data节点2 elasticsearch.yml
cluster.name: ictr_ElasticSearch
#换个节点名字
node.name: node3
node.master: false
node.attr.rack: r1
node.max_local_storage_nodes: 3
bootstrap.memory_lock: false
bootstrap.system_call_filter: false
network.host: 10.4.56.105
http.port: 9203
transport.tcp.port: 9303
http.cors.enabled: true
http.cors.allow-origin: "*"
discovery.zen.ping.unicast.hosts: ["10.4.56.105:9301"]
单机内存不足，启动不了3个节点可以调小内存占用修改jvm.options
将 -Xms512m -Xmx512m，设置为512m