1. 下载安装包
到官网下载安装包：https://www.elastic.co/downloads/elasticsearch
我下载的是用在Ubuntu上的deb包。
$ wget https://artifacts.elastic.co/downloads/elasticsearch/elasticsearch-6.2.4.deb
$
sudo dpkg -ielasticsearch-6.2.4.deb
2. 配置Elasticsearch为启动服务
sudo systemctl enable elasticsearch.service
3. 配置（可选）
$ sudo vi /etc/elasticsearch/elasticsearch.yml
. . . cluster.name: mycluster1 node.name: "My First Node" . . .
服务默认占用内存1G，因为我的服务器内存小，改成256M：
$ sudo vi /etc/elasticsearch/jvm.options
-Xms256m
-Xmx256m
4. 启动服务
$ sudo systemctl start elasticsearch
5. 测试
$ curl -X GET 'http://localhost:9200'
$ curl -XGET 'http://localhost:9200/_nodes?pretty'
$ curl -H 'Content-Type: application/json' -X POST 'http://localhost:9200/tutorial/helloworld/1' -d '{ "message": "Hello World!" }'
$ curl -X GET 'http://localhost:9200/tutorial/helloworld/1'
6. 安装中文分词
/usr/share/elasticsearch$ sudo ./bin/elasticsearch-plugin install https://github.com/medcl/elasticsearch-analysis-ik/releases/download/v6.2.4/elasticsearch-analysis-ik-6.2.4.zipes/download/
$ sudo service elasticsearch restart
用法详见：https://github.com/medcl/elasticsearch-analysis-ik/
7. 查看索引状态
curl -XGET 'http://localhost:9200/_cat/indices?format=json&pretty'
8. 增加身份验证机制（可选）
默认情况下，9200端口仅可本地访问。如果允许外部机器控制Elastic Search，那么应该增加身份验证机制。可以利用Nginx做一个反向代理来实现简单的身份验证。
/etc/nginx/sites-enabled$ cat elasticsearch
upstream elasticsearch {
server 127.0.0.1:9200;
}server {
listen 8200;
auth_basic "Protected Elasticsearch";
auth_basic_user_file /etc/nginx/elasticsearch_passwords;location / {
proxy_pass http://elasticsearch;
proxy_redirect off;
}
}$ printf "elasticsearch:$(openssl passwd -crypt PASSWORD)" > /etc/nginx/elasticsearch_passwords
$ service nginx restart
$ curl -i localhost:8200
# HTTP/1.1 401 Unauthorized
# ...$ curl -i elasticsearch:PASSWORD@localhost:8200
# HTTP/1.1 200 OK
# ...
8. 官方教程及API
进一步的用法参考API文档：https://www.elastic.co/guide/en/elasticsearch/reference/current/docs.html
教程：jiao chenhttps://www.elastic.co/guide/en/elasticsearch/reference/current/index.html
参考：
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