192.168.33.10  master  
 192.168.33.11  master data   
 192.168.33.12  master data 

一、創建es運行帳號 【三臺機器都統一用戶為es】
useradd es
passwd es

二、創建數據目錄與日誌目錄【三臺機器都一樣】

      mkdir -p /home/soft/elasticsearch-6.2.2/data/data/

      mkdir -p /home/soft/elasticsearch-6.2.2/data/logs/
 

三、修改目錄權限[三臺機器都一樣]

     chown -R es:es /home/soft/elasticsearch-6.2.2

四、修改配置信息

一.  192.168.33.10 配置信息:
                    cluster.name: my-application
                    node.name: node-192-168-33-10
                    path.data: /home/soft/elasticsearch-6.2.2/esData/data
                    path.logs: /home/soft/elasticsearch-6.2.2/esData/logs
                    bootstrap.memory_lock: false
                    bootstrap.system_call_filter: false
                    network.host: 192.168.33.10
                    http.port: 9200
                    discovery.zen.ping.unicast.hosts: ["192.168.33.10:9300","192.168.33.11:9300","192.168.33.12:9300"]
                    discovery.zen.minimum_master_nodes: 2
                    gateway.recover_after_nodes: 3
                    node.master: true
                    node.data: false
                    node.ingest: false
                    search.remote.connect: false

二、192.168.33.11 配置信息:
           cluster.name: my-application
           **node.name: node-192-168-33-11**
           path.data: /home/soft/elasticsearch-6.2.2/esData/data/
           path.logs: /home/soft/elasticsearch-6.2.2/esData/logs/
           bootstrap.memory_lock: false
           bootstrap.system_call_filter: false
           **network.host: 192.168.33.11**
           http.port: 9200
          discovery.zen.ping.unicast.hosts: ["192.168.33.10:9300","192.168.33.11:9300","192.168.33.12:9300"]
          discovery.zen.minimum_master_nodes: 2
          gateway.recover_after_nodes: 3
          node.master: true
         ** node.data: true**
          node.ingest: false
          search.remote.connect: false

三、192.168.33.12 配置信息
                     cluster.name: my-application                            
                      **node.name: node-12**
                      path.data: /home/soft/elasticsearch-6.2.2/esData/data/
                      path.logs: /home/soft/elasticsearch-6.2.2/esData/logs/
                      bootstrap.memory_lock: false
                      bootstrap.system_call_filter: false
                    ** network.host: 192.168.33.12**
                     http.port: 9200
                     discovery.zen.ping.unicast.hosts: ["192.168.33.10:9300","192.168.33.11:9300","192.168.33.12:9300"]
                     discovery.zen.minimum_master_nodes: 2
                     gateway.recover_after_nodes: 3
                     node.master: true
                     node.data: true
                     node.ingest: false
                     search.remote.connect: false

四，用es用戶的身份啟動elasticsearch-6.2.2 [三臺機器]
       ./bin/elasticsearch
    啟動成功之後，用CURL 請求測試集群是否搭建成功。
            curl http://192.168.33.11:9200/_cat/nodes?v
 

此時，一個簡單的集群已經搭建成功，現在是node-12為master節點。

說明：
3臺機器的cluster.name值必須一樣，node.name值必須不一樣。

在啟動過程中遇到的問題列表：

1. 

   解決辦法：
   vim /etc/security/limits.conf,新加兩行：
   es soft nofile 65536
   es hard nofile 65536

2. 

   解決辦法：
   discovery.zen.ping.unicast.hosts配置信息時把端口加上

Elasticsearch集群的簡單搭建