centos7安装部署ElasticSearch

ElasticSearch安装部署

简介

• 全文搜索属于最常见的需求，开源的 Elasticsearch （以下简称 es）是目前全文搜索引擎的首选。

• 它可以快速地储存、搜索和分析海量数据。维基百科、Stack Overflow、Github 都采用它。

• Elasticsearch简称es，在企业内同样是一款应用非常广泛的搜索引擎服务。

安装

1. 添加yum仓库

   # root执行
   # 导入仓库密钥
   rpm --import https://artifacts.elastic.co/GPG-KEY-elasticsearch
   
   # 添加yum源
   # 编辑文件 
   vim /etc/yum.repos.d/elasticsearch.repo
   
   # 推荐使用
   [elasticsearch-7.x]
   name=Elasticsearch repository for 7.x packages
   baseurl=https://mirrors.tuna.tsinghua.edu.cn/elasticstack/yum/elastic-7.x/
   gpgcheck=1
   gpgkey=https://artifacts.elastic.co/GPG-KEY-elasticsearch
   enabled=1
   autorefresh=1
   type=rpm-md
   
   # 更新yum缓存
   yum makecache
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2. 安装es

   yum install -y elasticsearch
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3. 配置es

   vim /etc/elasticsearch/elasticsearch.yml
   #阅读模式 显示行号
   :set nu
   
   # 17行，设置集群名称
   cluster.name: my-cluster
   
   # 23行，设置节点名称
   node.name: node-1
   
   # 56行，允许外网访问
   network.host: 0.0.0.0
   
   # 74行，配置集群master节点
   cluster.initial_master_nodes: ["node-1"]
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4. 启动es

   systemctl start | stop | status | enable | disable elasticsearch
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5. 关闭防火墙

   systemctl stop firewalld
   systemctl disable firewalld
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6. 测试

   • 浏览器打开：http://ip:9200/?pretty

sudo userdel elasticsearch
sudo groupdel elasticsearch
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{
  "name": "node-1",
  "cluster_name": "my-cluster",
  "cluster_uuid": "yLfUpG4CQ-Wbq6zL-2XqzA",
  "version": {
    "number": "7.17.14",
    "build_flavor": "default",
    "build_type": "rpm",
    "build_hash": "774e3bfa4d52e2834e4d9d8d669d77e4e5c1017f",
    "build_date": "2023-10-05T22:17:33.780167078Z",
    "build_snapshot": false,
    "lucene_version": "8.11.1",
    "minimum_wire_compatibility_version": "6.8.0",
    "minimum_index_compatibility_version": "6.0.0-beta1"
  },
  "tagline": "You Know, for Search"
}
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卸载

1. 停止Elasticsearch服务

   sudo systemctl stop elasticsearch
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2. 卸载Elasticsearch软件包

   sudo yum remove elasticsearch
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3. 删除Elasticsearch数据目录

   • Elasticsearch数据目录默认位于/var/lib/elasticsearch

   sudo rm -rf /var/lib/elasticsearch
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4. 删除Elasticsearch配置文件

   • Elasticsearch配置文件默认位于/etc/elasticsearch

   sudo rm -rf /etc/elasticsearch
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5. 删除Elasticsearch日志文件

   • Elasticsearch日志文件默认位于/var/log/elasticsearch

   sudo rm -rf /var/log/elasticsearch
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