Elasticsearch集群搭建

現有兩部機器：192.168.31.86，192.168.31.87

 

參考以往博文對Elasticsearch進行配置完成：http://www.cnblogs.com/zhongshengzhen/p/elasticsearch_mysql.html

1、注意事項

集群需要在同一網段

 

2、配置elasticsearch.yml

cluster.name ：配置es的集群名稱，不同的集群用名字來區分， 如果在同一網段下有多個集群，就可以用這個屬性來區分不同的集群。

 

node.name：節點名稱，一部服務器一個節點，分別為node-1，node-2，node-3 。

 

http.port ：服務端口，一般默認是9200，如果在同一部服務器上面配置多個elasticsearch服務，則端口需要不同

 

discovery.zen.ping.unicast.hosts：自動檢索可用節點，設置了這個參數才會自動檢測可用的節點。 同一集群名下，elasticsearch會自動去發現其他的節點。

 

具體配置：

192.168.31.86：

cluster.name: mycluster

node.name: node-1

#指定了該節點可能成為 master 節點，還可以是數據節點
node.master: true
node.data: true

network.host: 192.168.31.86

http.port: 9200

transport.tcp.port: 9300

discovery.zen.ping.unicast.hosts: ["192.168.31.86", "192.168.31.87"]

 

192.168.31.87：

cluster.name: mycluster

node.name: node-2

#指定了該節點可能成為 master 節點，還可以是數據節點
node.master: true
node.data: true

network.host: 192.168.31.87

http.port: 9200

transport.tcp.port: 9300

discovery.zen.ping.unicast.hosts: ["192.168.31.86", "192.168.31.87"]

 

然后分別啟動兩個節點的ES服務。

 

安裝Head
Head是一個用來監控Elasticsearch狀態的客戶端插件。

 

檢查兩個節點的情況：

192.168.31.86：

[zsz@zsz elasticsearch-2.3.2]$ curl '192.168.31.86:9200/_cat/indices?v'
health status index    pri rep docs.count docs.deleted store.size pri.store.size
green  open   myindex    5   1        163            0      294kb          147kb
green  open   customer   5   1          0            0      1.5kb           795b 

 

192.168.31.87：

[zsz@VS-SUPSV-TEST1 elasticsearch-2.3.2]$ curl '192.168.31.87:9200/_cat/indices?v'
health status index    pri rep docs.count docs.deleted store.size pri.store.size
green  open   myindex    5   1        163            0      294kb          147kb
green  open   customer   5   1          0            0      1.5kb           795b 

 

發現是GREEN的綠色健康狀態，說明備份被分配完成，可用。集群配置完成。

 

測試集群中兩個節點的查詢情況：

[zsz@zsz ~]$ curl ' 192.168.31.87:9200 /myindex/_search?q=ghdfdfgddfg'
{"took":13,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.49305484,"hits":[{"_index":"myindex","_type":"mytype","_id":"AVeoqjX_-bv4eY7Nx-xL","_score":0.49305484,"_source":{"pk":14,"user_pk":10,"media_pk":2,"topic_pk":0,"access_source_pk":0,"p_channel_pk":0,"c_channel_pk":0,"title":"ghdfdfgddfg","cover_url":{"S":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_2.jpg"],"L":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_1.jpg"]},"summary":"\"好奇號\"發回火星最新影像 地貌酷似地球","read_count":0,"like_count":0,"share_count":0,"favorites_count":0,"check_status":3,"release_status":1,"isurgent":1,"created_at":"2016-08-15T14:07:19.000+08:00","updated_at":"2016-10-04T10:11:56.000+08:00"}}]}}

 

[zsz@zsz ~]$ curl '192.168.31.86:9200/myindex/_search?q=ghdfdfgddfg'
{"took":5,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.49305484,"hits":[{"_index":"myindex","_type":"mytype","_id":"AVeoqjX_-bv4eY7Nx-xL","_score":0.49305484,"_source":{"pk":14,"user_pk":10,"media_pk":2,"topic_pk":0,"access_source_pk":0,"p_channel_pk":0,"c_channel_pk":0,"title":"ghdfdfgddfg","cover_url":{"S":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_2.jpg"],"L":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_1.jpg"]},"summary":"\"好奇號\"發回火星最新影像 地貌酷似地球","read_count":0,"like_count":0,"share_count":0,"favorites_count":0,"check_status":3,"release_status":1,"isurgent":1,"created_at":"2016-08-15T14:07:19.000+08:00","updated_at":"2016-10-04T10:11:56.000+08:00"}}]}}

 

測試192.168.31.86節點對數據修改后，兩個節點的數據是否同步

 

[zsz@zsz ~]$ curl -XPOST ' 192.168.31.86:9200/myindex/mytype/ AVeoqjX_-bv4eY7Nx-xL/_update?pretty' -d '{        
          "doc": {  "summary ": "TEST UPDATE DATA" }
        }'
{
  "_index" : "myindex",
  "_type" : "AVeoqjX_-bv4eY7Nx-xL",
  "_id" : "_update",
  "_version" : 1,
  "_shards" : {
    "total" : 2,
    "successful" : 2,
    "failed" : 0
  },
  "created" : true
}

 

[zsz@zsz ~]$ curl '192.168.31.86:9200/myindex/_search?q=ghdfdfgddfg'
{"took":5,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.44561866,"hits":[{"_index":"myindex","_type":"mytype","_id":"AVeoqjX_-bv4eY7Nx-xL","_score":0.44561866,"_source":{"pk":14,"user_pk":10,"media_pk":2,"topic_pk":0,"access_source_pk":0,"p_channel_pk":0,"c_channel_pk":0,"title":"ghdfdfgddfg","cover_url":{"S":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_2.jpg"],"L":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_1.jpg"]},"summary":"\"好奇號\"發回火星最新影像 地貌酷似地球","read_count":0,"like_count":0,"share_count":0,"favorites_count":0,"check_status":3,"release_status":1,"isurgent":1,"created_at":"2016-08-15T14:07:19.000+08:00","updated_at":"2016-10-04T10:11:56.000+08:00", "summary ":"TEST UPDATE DATA"}}]}}

 

[zsz@zsz ~]$ curl ' 192.168.31.87:9200 /myindex/_search?q=ghdfdfgddfg'
{"took":2,"timed_out":false,"_shards":{"total":5,"successful":5,"failed":0},"hits":{"total":1,"max_score":0.44561866,"hits":[{"_index":"myindex","_type":"mytype","_id":"AVeoqjX_-bv4eY7Nx-xL","_score":0.44561866,"_source":{"pk":14,"user_pk":10,"media_pk":2,"topic_pk":0,"access_source_pk":0,"p_channel_pk":0,"c_channel_pk":0,"title":"ghdfdfgddfg","cover_url":{"S":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_2.jpg"],"L":["http://ochz1y8tu.bkt.clouddn.com/lg-6Q2Cy2yjF_SqLSo5YaKJKx2E520160829102601_1.jpg"]},"summary":"\"好奇號\"發回火星最新影像 地貌酷似地球","read_count":0,"like_count":0,"share_count":0,"favorites_count":0,"check_status":3,"release_status":1,"isurgent":1,"created_at":"2016-08-15T14:07:19.000+08:00","updated_at":"2016-10-04T10:11:56.000+08:00", "summary ":"TEST UPDATE DATA"}}]}}

 

在192.168.31.86機器上更新的數據，分別查詢192.168.31.86和192.168.31.87，發覺數據是同步了的。elasticsearch集群自我完成了實時同步。

 

 

常見問題：

1、問題報錯： no rute to host

解決方案：由於端口沒開啟，處理辦法

（1）關閉服務器防火牆，不推薦。

（2）開放端口：

/sbin/iptables -I INPUT -p tcp --dport 9200 -j ACCEPT

/sbin/iptables -I INPUT -p tcp --dport 9300 -j ACCEPT

/etc/rc.d/init.d/iptables save
/etc/rc.d/init.d/iptables restart
/etc/init.d/iptables status