es7.4.0集羣部署

其實主要是配置的變化，需要指定下master節點

cluster.name: prod-es

node.name: node1
node.master: true
node.data: true
path.data: /srv/data/elk/elasticsearch
path.logs: /srv/logs/elk/elasticsearch

network.host: 10.100.3.21
http.port: 9200
transport.tcp.port: 9201
cluster.initial_master_nodes: ["node1","node2","node3"]
discovery.zen.ping.unicast.hosts: ["node1","node2","node3"]
discovery.zen.minimum_master_nodes: 2
gateway.recover_after_nodes: 3
gateway.expected_nodes: 3
gateway.recover_after_time: 5m
http.cors.enabled: true
http.cors.allow-origin: "*"
xpack.security.enabled: false