CentOS7下安装ElasticSearch

本是古典何须时尚 2022-03-10 17:55 265阅读 0赞

# CentOS7下安装ElasticSearch #

ElasticSearch使用的版本是6.2.4，目前已有更新版本

## 1.配置JDK环境 ##

export JAVA_HOME="/opt/jdk1.8.0_144"
    export PATH="$JAVA_HOME/bin:$PATH"
    export CLASSPATH=".:$JAVA_HOME/lib"

## 2.下载ElasticSearch ##

官方下载地址：[https://www.elastic.co/cn/downloads/elasticsearch][https_www.elastic.co_cn_downloads_elasticsearch]

csdn下载地址：[https://download.csdn.net/download/u014646662/11012095][https_download.csdn.net_download_u014646662_11012095]

csdn上包含[elasticsearch-6.2.4.tar.gz][https_download.csdn.net_download_u014646662_11012095] 和 [kibana-6.2.4-linux-x86\_64..tar.gz][https_download.csdn.net_download_u014646662_11012095]

## 3.安装 ##

将下载好的压缩包elasticsearch-6.2.4.tar.gz解压

#使用非root用户
    cd /opt
    tar -xzvf elasticsearch-6.2.4.tar.gz

解压后出现如下内容：

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQ2NDY2NjI_size_16_color_FFFFFF_t_70][]

启动Elasticsearch：

bin/elasticsearch

加参数 -d 可以后台启动，第一次最好不要后台启动，需要看是否启动成功

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQ2NDY2NjI_size_16_color_FFFFFF_t_70 1][]

如果看到以上信息，就可以测试一下是否启动成功了

在浏览器中输入：

localhost:9200

页面上会有：

{
      "name" : "ZPV-3J_",
      "cluster_name" : "elasticsearch",
      "cluster_uuid" : "dyNpChovRgWCYbh9FCHN0g",
      "version" : {
        "number" : "6.2.4",
        "build_hash" : "ccec39f",
        "build_date" : "2018-04-12T20:37:28.497551Z",
        "build_snapshot" : false,
        "lucene_version" : "7.2.1",
        "minimum_wire_compatibility_version" : "5.6.0",
        "minimum_index_compatibility_version" : "5.0.0"
      },
      "tagline" : "You Know, for Search"
    }

因为是直接启动的，没有修改配置文件，所以只能localhost或127.0.0.1来访问，如果出现以上信息则表示启动成功了

## 4.配置远程访问 ##

编辑config/elasticsearch.yml /etc/security/limits.conf   /etc/security/limits.d/20-nproc.conf  /etc/sysctl.conf四个文件

1. vim config/elasticsearch.yml
    #修改 network.host: 自己的主机名或IP
    
    2. vim /etc/security/limits.conf
    # 在文件尾部追加下列内容
    # esuser是你的用户名
    esuser soft nofile 65536
    esuser hard nofile 65536
    esuser soft nproc 4096
    esuser hard nproc 4096
    
    3. vim /etc/security/limits.d/20-nproc.conf 
    # 修改为 esuser soft nproc 4096
    
    4. vim /etc/sysctl.conf
    vm.max_map_count=655360

使配置生效

sysctl -p

重启机器

## 5. 再次启动ElasticSearch ##

cd /opt
    bin/elasticsearch

## 6. 远程浏览器访问 ##

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQ2NDY2NjI_size_16_color_FFFFFF_t_70 2][]

[https_www.elastic.co_cn_downloads_elasticsearch]: https://www.elastic.co/cn/downloads/elasticsearch
[https_download.csdn.net_download_u014646662_11012095]: https://download.csdn.net/download/u014646662/11012095
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQ2NDY2NjI_size_16_color_FFFFFF_t_70]: /images/20220310/97fef14ac7634566931e696af59681c4.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQ2NDY2NjI_size_16_color_FFFFFF_t_70 1]: /images/20220310/b32785d0374b46818173d20ea024a95e.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3UwMTQ2NDY2NjI_size_16_color_FFFFFF_t_70 2]: /images/20220310/d3d3ba03209e4a7389aaade61e996617.png