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第6講 6 ElasticSearch搭建叢集

1,關機,克隆,關於克隆後的基本網路配置參考文件:https://blog.csdn.net/u010393325/article/details/83653507#comments

  1. 機器名 IP 結點作用 結點名稱 叢集名稱
    Cruise 192.168.245.40 主節點 node-1 my-application
    Cruise2 192.168.245.41 從節點 node-2 my-application

2,修改配置檔案, vi /home/es/elasticsearch-5.5.2/config/elasticsearch.yml
    具體配置資訊參考:https://blog.csdn.net/u010393325/article/details/84102144

3,刪除/home/es/elasticsearch-5.5.2/data目錄下的 nodes,
   命令:rm -rf nodes;
4,啟動 :先啟動主節點(包括 ElasticSearch 和 ElasticSearch-head),
      再啟動從節點(ElasticSearch),

      啟動:ElasticSearch
        
su elastic
          sh /home/es/elasticsearch-5.5.2/bin/elasticsearch
      啟動:ElasticSearch-head
          cd elasticsearch-head/
        
npm run start

5, 測試叢集,
 
6_ElasticSearch搭建叢集
新建兩個索引,一個設定成兩個副本,一個設定成一個副本

6_ElasticSearch搭建叢集
6,Java程式碼測試叢集

package com.cruise;

import java.net.InetAddress;

import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.transport.client.PreBuiltTransportClient;

import com.google.gson.JsonObject;

public class TestCON {

    private static String host="192.168.245.40";
    private static int port=9300;
    public static final String CLUSTER_NAME="my-application";
    private static Settings.Builder settings=Settings.builder().put("cluster.name",CLUSTER_NAME);
    
    @SuppressWarnings("resource")
    public static void main(String[] args) throws Exception{
        TransportClient client = new PreBuiltTransportClient(settings.build())
        .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host),port));
        JsonObject jsonObject = new JsonObject();
        IndexResponse indexResponse = client.prepareIndex("book","java","1")
                .setSource(jsonObject.toString(), XContentType.JSON).get();
        System.out.println(client);
        client.close();
    }
}

增刪改查測試:
package com.cruise;

import java.net.InetAddress;

import org.elasticsearch.action.delete.DeleteResponse;
import org.elasticsearch.action.get.GetResponse;
import org.elasticsearch.action.index.IndexResponse;
import org.elasticsearch.action.update.UpdateResponse;
import org.elasticsearch.client.transport.TransportClient;
import org.elasticsearch.common.settings.Settings;
import org.elasticsearch.common.transport.InetSocketTransportAddress;
import org.elasticsearch.common.xcontent.XContentType;
import org.elasticsearch.transport.client.PreBuiltTransportClient;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;

import com.google.gson.JsonObject;

public class TestIndex {

    private static String host="192.168.245.40";
    private static int port=9300;
    private TransportClient client =null;
    public static final String CLUSTER_NAME="my-application";
    private static Settings.Builder settings=Settings.builder().put("cluster.name",CLUSTER_NAME);
    
    
    @SuppressWarnings({ "resource", "unchecked" })
    @Before
    public void getClient() throws Exception{
        client = new PreBuiltTransportClient(settings.build())
                .addTransportAddress(new InetSocketTransportAddress(InetAddress.getByName(host),port));
    }
    
    @After
    public void close(){
        if(client!=null){
            client.close();
        }
    }
    
    @Test
    public void testIndex() throws Exception{
        JsonObject jsonObject = new JsonObject();
        jsonObject.addProperty("name", "java程式設計思想");
        jsonObject.addProperty("publishDate", "2011-11-11");
        jsonObject.addProperty("pirce", "100");
        IndexResponse indexResponse = client.prepareIndex("book","java","1")
            .setSource(jsonObject.toString(), XContentType.JSON).get();
        System.out.println("索引名稱:"+indexResponse.getIndex());
        System.out.println("型別:"+indexResponse.getType());
        System.out.println("id:"+indexResponse.getId());
        System.out.println("當前索引狀態:"+indexResponse.status());
        
    }
    
    @Test
    public void testGet() throws Exception{
        GetResponse getResponse = client.prepareGet("book","java","1").get();
        System.out.println(getResponse.getSourceAsString());
    }
    
    @Test
    public void testUpdate() throws Exception{
        JsonObject jsonObject = new JsonObject();
        jsonObject.addProperty("name", "java程式設計思想22");
        jsonObject.addProperty("publishDate", "2011-11-22");
        jsonObject.addProperty("pirce", "122");
        UpdateResponse response = client.prepareUpdate("book","java","1").setDoc(jsonObject.toString(), XContentType.JSON).get();
        System.out.println("索引名稱:"+response.getIndex());
        System.out.println("型別:"+response.getType());
        System.out.println("id:"+response.getId());
        System.out.println("當前索引狀態:"+response.status());
    }
    
    @Test
    public void testDelete() throws Exception{
        DeleteResponse response = client.prepareDelete("book","java","1").get();
        System.out.println("索引名稱:"+response.getIndex());
        System.out.println("型別:"+response.getType());
        System.out.println("id:"+response.getId());
        System.out.println("當前索引狀態:"+response.status());
    }
    
}