ElasticSearch5.4.1 搜索引擎搭建文档

1. 安装配置JDK环境
   JDK安装（不能安装JRE）
   JDK下载地址：http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
   下载包：jdk-8u131-linux-x64.rpm
   yum localinstall jdk-8u131-linux-x64.rpm
2. mvn 安装
   MVN下载地址
   cd /usr/local
   wget http://www-eu.apache.org/dist/maven/maven-3/3.3.9/binaries/apache-maven-3.3.9-bin.tar.gz
   tar xzf apache-maven-3.3.9-bin.tar.gz
   mv apache-maven-3.3.9 maven
   vi /etc/profile.d/maven.sh
   export M2_HOME=/usr/local/maven
   export PATH=${M2_HOME}/bin:${PATH}
   source /etc/profile.d/maven.sh
   mvn -version
3. 安装ElasticSearch5.41
   yum install epel-release
   yum install npm nodejs
   centos7 若安装nodejs失败，请执行如下命令再重试
   rpm -ivh https://kojipkgs.fedoraproject.org//packages/http-parser/2.7.1/3.el7/x86_64/http-parser-2.7.1-3.el7.x86_64.rpm
   wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.4.1.rpm
   yum localinstall elasticsearch-5.4.1.rpm
   修改配置文件
   vim /etc/elasticsearch/elasticsearch.yml
   修改network.host:localhost 为当前服务器ip地址
   追加2行
   # 增加新的参数，这样head插件可以访问es
   http.cors.enabled: true
   http.cors.allow-origin: "*"
   若安装了xpack，关闭密码，需添加如下一行，默认无需添加
   xpack.security.enabled: false
   启动: systemctl start elasticsearch
   开机启动：systemctl enable elasticsearch
   测试
   访问 http://localhost:9200/地址
   默认密码Username: elastic Password: changeme
   注意network.host参数，不能使用外网ip，若需要开发外网访问，设置为：0.0.0.0
4. elasticsearch-head (此操作巨慢)
   git clone git://github.com/mobz/elasticsearch-head.git
   cd elasticsearch-head
   '''
   添加淘宝源(依然慢)
   npm install -g cnpm --registry=https://registry.npm.taobao.org
   '''
   npm install
   vim _site/app.js
   查找9200修改参数localhost为本机ip
   npm run start
   测试
   访问 http://localhost:9100/地址，页面显示正常，es连接正常即ok
5. kibana
   wget https://artifacts.elastic.co/downloads/kibana/kibana-5.4.1-x86_64.rpm
   yum localinstall kibana-5.4.1-x86_64.rpm
   修改配置文件
   vim /etc/kibana/kibana.yml 
   修改elasticsearch.url localhost 为当前服务器ip地址，用户名及密码
   elasticsearch.url: http://localhost:9200
   elasticsearch.username: "elastic"
   elasticsearch.password: "changeme"
   测试：
   curl -u elastic:changeme http://localhost
   http://localhost/status
6. nginx配置
   安装软件
   yum install nginx httpd-tools
   为 Kibana 创建一个配置文件
   vi /etc/nginx/conf.d/kibana.conf
   加入以下这一段内容：
   

   server {
       listen 80;
       server_name server_ip;
       location / {
           proxy_pass http://localhost:5601;
           proxy_http_version 1.1;
           proxy_set_header Upgrade $http_upgrade;
           proxy_set_header Connection 'upgrade';
           proxy_set_header Host $host;
           proxy_cache_bypass $http_upgrade; 
       }
   }

   注意修改配置文件，server_name ip
   启动Nginx服务
   systemctl start nginx
   systemctl enable nginx
   验证http://localhost

7. 5.x以上版本的Elasticsearch，Marvel 更换成了X-Pack （收费插件，免费的只有监控功能）
   cd /usr/share/elasticsearch/bin
   ./elasticsearch-plugin install x-pack
   cd /usr/share/kibana/bin
   ./kibana-plugin install x-pack
   systemctl restart elasticsearch
   systemctl restart kibana
8. elasticsearch-analysis-ik 分词插件 （此步安装巨慢）
   对应免安装版本下载地址：https://github.com/medcl/elasticsearch-analysis-ik/releases
   git clone https://github.com/medcl/elasticsearch-analysis-ik
   cd elasticsearch-analysis-ik
   mvn clean
   mvn compile
   mvn package
   拷贝和解压 release 下的文件: #{project_path}/elasticsearch-analysis-ik/target/releases/elasticsearch-analysis-ik-*.zip 到你的 elasticsearch 插件目录, 如: plugins/ik 重启 elasticsearch
   分词插件测试脚本
   

   创建一个index
   curl -u elastic:changeme -XPUT http://localhost:9200/index
   创建一个mapping
   curl -u elastic:changeme -XPOST http://localhost:9200/index/fulltext/_mapping -d'
   {
       "fulltext": {
                "_all": {
               "analyzer": "ik_max_word",
               "search_analyzer": "ik_max_word",
               "term_vector": "no",
               "store": "false"
           },
           "properties": {
               "content": {
                   "type": "text",
                   "analyzer": "ik_max_word",
                   "search_analyzer": "ik_max_word",
                   "include_in_all": "true",
                   "boost": 8
               }
           }
       }
   }'
   创建index
   curl -u elastic:changeme -XPOST http://localhost:9200/index/fulltext/1 -d'
   {"content":"世界如此之大"}
   '
   curl -u elastic:changeme -XPOST http://localhost:9200/index/fulltext/2 -d'
   {"content":"世界如此美好"}
   '
   查询
   curl -u elastic:changeme -XPOST http://localhost:9200/index/fulltext/_search  -d'
   {
       "query" : { "match" : { "content" : "世界" }},
       "highlight" : {
           "pre_tags" : ["<tag1>", "<tag2>"],
           "post_tags" : ["</tag1>", "</tag2>"],
           "fields" : {
               "content" : {}
           }
       }
   }
   '