Elasticsearch，基于lucene，隐藏复杂性，提供简单易用的restful API接口、Java API接口
Elasticsearch：一个实时分布式搜索和分析引擎，它用于全文搜索、结构话搜索、分析
索引包含一堆有相似结构的文档数据，一个index包含很多document，一个index代表了一类类似的或者相同的document
每个索引里都可以有一个或多个type，type是index中的一个逻辑数据分类，一个type下的document，都有相同的field，每一个type都包含一堆document
文档是es中的最小数据单元，每个index下的type中，都可以去存储多个document
Field是es的最小单元，一个document里面有多个field，每个field就是一个数据字段
数据通过映射存放到索引对象上
（1）Elasticsearch官网https://www.elastic.co/cn/downloads/elasticsearch下载安装包
（2）解压elasticsearch-7.1.0-linux-x86_64.tar.gz压缩包
tar -xvzf elasticsearch-7.1.0-linux-x86_64.tar.gz（3）修改elasticsearch-7.1.0文件夹的用户权限
chown -R destiny elasticsearch-7.1.0（4）创建data和logs文件夹
mkdir -p data/data mkdir -p data/logs（5）修改data文件夹的用户权限
chown -R destiny data（6）切换用户
su destiny（7）修改config文件夹下的elasticsearch.yml文件
master节点配置
# ---------------------------------- Cluster ----------------------------------- # 配置集群需要节点上cluster.name配置相同 cluster.name: elasticsearch # ------------------------------------ Node ------------------------------------ # 配置集群各节点上node.name配置不能相同 node.name: master # ----------------------------------- Paths ------------------------------------ path.data: /usr/local/elasticsearch/data/data path.logs: /usr/local/elasticsearch/data/logs # ----------------------------------- Memory ----------------------------------- bootstrap.memory_lock: false bootstrap.system_call_filter: false # ---------------------------------- Network ----------------------------------- network.host: 192.168.138.130 # --------------------------------- Discovery ---------------------------------- discovery.zen.ping.unicast.hosts: ["192.168.138.130","192.168.138.129","192.168.138.128"] cluster.initial_master_nodes: ["master"] discovery.zen.minimum_master_nodes: 2 # ---------------------------------- Various ----------------------------------- #action.destructive_requires_name: true http.cors.enabled: true http.cors.allow-origin: "*"slave1节点配置
# ---------------------------------- Cluster ----------------------------------- # 配置集群需要节点上cluster.name配置相同 cluster.name: elasticsearch # ------------------------------------ Node ------------------------------------ # 配置集群各节点上node.name配置不能相同 node.name: slave1 # ----------------------------------- Paths ------------------------------------ path.data: /usr/local/elasticsearch/data/data path.logs: /usr/local/elasticsearch/data/logs # ----------------------------------- Memory ----------------------------------- bootstrap.memory_lock: false bootstrap.system_call_filter: false # ---------------------------------- Network ----------------------------------- network.host: 192.168.138.129 # --------------------------------- Discovery ---------------------------------- discovery.zen.ping.unicast.hosts: ["192.168.138.130","192.168.138.129","192.168.138.128"] cluster.initial_master_nodes: ["master"] discovery.zen.minimum_master_nodes: 2 # ---------------------------------- Various ----------------------------------- #action.destructive_requires_name: true http.cors.enabled: true http.cors.allow-origin: "*"slave2节点配置
# ---------------------------------- Cluster ----------------------------------- # 配置集群需要节点上cluster.name配置相同 cluster.name: elasticsearch # ------------------------------------ Node ------------------------------------ # 配置集群各节点上node.name配置不能相同 node.name: slave2 # ----------------------------------- Paths ------------------------------------ path.data: /usr/local/elasticsearch/data/data path.logs: /usr/local/elasticsearch/data/logs # ----------------------------------- Memory ----------------------------------- bootstrap.memory_lock: false bootstrap.system_call_filter: false # ---------------------------------- Network ----------------------------------- network.host: 192.168.138.128 # --------------------------------- Discovery ---------------------------------- discovery.zen.ping.unicast.hosts: ["192.168.138.130","192.168.138.129","192.168.138.128"] cluster.initial_master_nodes: ["master"] discovery.zen.minimum_master_nodes: 2 # ---------------------------------- Various ----------------------------------- #action.destructive_requires_name: true http.cors.enabled: true http.cors.allow-origin: "*"（8）切换root用户修改/etc/security/limits.conf文件添加配置
* soft nofile 65536 * hard nofile 131072 * soft nproc 4096 * hard nproc 4096（9）修改/etc/security/limits.d/20-nproc.conf文件
* soft nproc 4096（10）修改/etc/sysctl.conf文件添加配置
vm.max_map_count=655360（11）执行命令
sysctl -p（12）启动elasticsearch
./bin/elasticsearch # 后台运行 ./elasticesrarch -d（13）测试elasticsearch
curl http://hadoop1:9200 curl -XGET '192.168.138.130:9200/_cat/health?v&pretty'（14）将Elasticsearch相关文件和文件夹发送到其它服务器上
scp -r elasticsearch hadoop2:$PWD scp /etc/security/limits.conf hadoop2:/etc/security scp /etc/profile hadoop2:/etc/ scp /etc/security/limits.d/20-nproc.conf hadoop2:/etc/security/（1）网站https://github.com/mobz/elasticsearch-head/archive/master.zip下载head插件
（2）解压elasticsearch-head-master.zip压缩包
unzip elasticsearch-head-master.zip（3）安装node.js，命令node -v验证安装
curl -sL https://rpm.nodesource.com/setup_8.x | bash - yum install -y nodejs（4）验证是否安装成功
node -v npm -v（5）切换到elasticsearch-head-master目录下安装grunt
npm install -g grunt-cli npm install phantomjs-prebuilt@2.1.14 --ignore-scripts npm install（6）修改Gruntfile.js文件
connect: { server: { options: { port: 9100, hostname: '*', base: '.', keepalive: true }（6）修改_site/app.js文件
this.base_uri = this.config.base_uri || this.prefs.get("app-base_uri") || "http://192.168.138.130:9200";（7）启动head
grunt server &（8）浏览器输入http://192.168.138.130:9100/访问
（1）网站https://github.com/medcl/elasticsearch-analysis-ik/releases/tag/v7.1.0下载analysis插件
（2）在elasticsearch的plugins文件夹下创建elasticsearch-analysis-ik-7.1.0
mkdir elasticsearch-analysis-ik-7.1.0（3）解压elasticsearch-analysis-ik-7.1.0.zip压缩包
unzip elasticsearch-analysis-ik-7.1.0.zip（4）重新启动elasticsearch
（1）网站https://www.elastic.co/cn/downloads/past-releases/kibana-7-1-0下载kibana
（2）解压kibana-7.1.0-linux-x86_64.tar.gz压缩包
tar -xvzf kibana-7.1.0-linux-x86_64.tar.gz（3）修改配置文件kibana.yml
server.port: 5601 server.host: "192.168.138.130" elasticsearch.hosts: ["http://192.168.138.130:9200"] kibana.index: ".kibana"（4）启动Elasticsearch集群
elasticsearch（5）启动kibana
kibana（6）网页输入http://192.168.138.130:5601
