CentOS7安装elasticsearch

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3. 安装JAVA

4. 安装elasticsearch

   cd /root
   wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-5.6.2.tar.gz
   tar -zxvf elasticsearch-5.6.2.tar.gz
   mv /root/elasticsearch-5.6.2 /usr/local/elasticsearch
   

5. 创建数据目录

   mkdir /data
   mkdir /data/search
   useradd elasticsearch
   chown -R elasticsearch:elasticsearch /data/search
   chown -R elasticsearch:elasticsearch /usr/local/elasticsearch
   

6. 修改配置文件

   vim /usr/local/elasticsearch/config/elasticsearch.yml
   node.name: node-1
   node.attr.rack: r1
   path.data: /data/search
   network.host: 127.0.0.1
   http.port: 9200
   ESC
   :wq
   

7. 系统配置

   su root
   
   vim /etc/sysctl.conf
   # 分配512M内存(1G内存的服务器)
   vm.max_map_count=524288
   ESC
   :wq
   
   # 重载sysctl.conf配置
   sysctl -p
   
   vim /usr/local/elasticsearch/config/jvm.options
   # 分配512M内存(1G内存的服务器)
   -Xms512M
   # 分配512M内存(1G内存的服务器)
   -Xmx512M
   -XX:-AssumeMP
   ESC
   :wq
   
   # 编辑limits.conf
   vim /etc/security/limits.conf
   
   * soft nproc 65535
   * hard nproc 65535
   * soft nofile 1024000
   * hard nofile 1024000
   
   ESC
   :wq
   

8. 启动elasticsearch

   su elasticsearch
   /usr/local/elasticsearch/bin/elasticsearch -d
   

9. 防火墙配置

   su root
   systemctl enable firewalld
   systemctl start firewalld
   firewall-cmd --zone=public --add-port=9200/tcp --permanent
   firewall-cmd --zone=public --add-port=9300/tcp --permanent
   firewall-cmd --reload
   

10. 检查是否成功运行

    curl http://127.0.0.1:9200
    

11. 进程管理

    cd /etc/systemd/system
    
    vim search.service
    
    [Unit]
    Description=Start elasticsearch on boot.
    After=default.target network.target
    
    [Service]
    User=elasticsearch
    Group=elasticsearch
    Type=forking
    ExecStart=/usr/local/elasticsearch/bin/elasticsearch -d
    PrivateTmp=false
    Restart=always
    
    [Install]
    WantedBy=multi-user.target
    
    ESC
    :wq
    
    systemctl daemon-reload
    systemctl enable search
    systemctl start search
    

CURL管理所有索引

1. 创建一个索引

   curl -XPUT 'http://127.0.0.1:9200/test_key1?pretty'
   

2. 查看所有索引

   curl 'http://127.0.0.1:9200/_cat/indices'
   

3. 删除指定索引

   curl -XDELETE 'http://127.0.0.1:9200/test_key1?pretty'
   

Console管理所有索引

1. 创建一个索引

   PUT /[index_name]
   

2. 删除多个索引

   DELETE /index_*
   DELETE /index_1,index_2
   

3. 删除所有索引

   DELETE /*
   DELETE /_all
   

4. 参考链接

5. 参考链接