elasticsearch(ES)

1. 安装JAVA_JDK

2. 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

3. 修改配置文件

   vim /usr/local/elasticsearch/config/elasticsearch.yml
   
   # node.name
   node.name: node-1
   # node.attr
   node.attr.rack: r1
   # 数据路径
   path.data: /usr/local/elasticsearch/data
   # 日志路径
   path.logs: /usr/local/elasticsearch/logs
   # IP绑定
   network.host: [局域网ip]
   # 设置端口
   http.port: 9200
   
   ESC
   :wq

4. 运存分配

   vim /usr/local/elasticsearch/config/jvm.options
   
   # 分配1G内存(2G内存的服务器)
   -Xms1G
   # 分配1G内存(2G内存的服务器)
   -Xmx1G
   -XX:-AssumeMP
   
   ESC
   :wq

5. 系统配置

   su root
   # 编辑sysctl.conf
   vim /etc/sysctl.conf
   # 设置最大内存占用1G(2G内存服务器)
   vm.max_map_count=1048576
   
   ESC
   :wq
   
   # 重载sysctl.conf配置
   sysctl -p
   
   # 编辑limits.conf
   vim /etc/security/limits.conf
   
   elasticsearch hard nofile 65536
   elasticsearch soft nofile 65536
   
   ESC
   :wq

6. 启动elasticsearch

   useradd elasticsearch
   chown -R elasticsearch:elasticsearch /usr/local/elasticsearch
   su elasticsearch
   /usr/local/elasticsearch/bin/elasticsearch -d \
   -p /usr/local/elasticsearch/logs/elasticsearch.pid

7. 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

8. 检查是否成功运行

   curl http://[服务器局域网]:9200

9. 开机启动

   su root
   vim /etc/rc.local
   
   su elasticsearch -c "/usr/local/elasticsearch/bin/elasticsearch -d -p /usr/local/elasticsearch/logs/elasticsearch.pid"
   
   ESC
   :wq

CURL管理所有索引

1. 创建一个索引

   curl -XPUT 'http://[ip]:[port]/[index_name]?pretty'

2. 查看所有索引

   curl 'http://[ip]:[port]/_cat/indices'

3. 删除指定索引

   curl -XDELETE 'http://[ip]:[port]/[index_name]?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

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