elasticsearch基本索引和CRUD操作、bulk批量操作

ELK包括ElasticSearch（数据存储、快速查询）、logstash（日志搜集）、kibana（展示ElasticSearch数据的图形界面）。

4种常用的HTTP请求方法：

• POST /uri 创建
• DELETE /uri/xxx 删除
• PUT /uri/xxx 更新或创建
• GET /uri/xxx 查看

CRUD操作示例：

	PUT test
	{
	  "settings": {
	    "index":{
	      "number_of_shards":5,
	      "number_of_replicas":1
	    }
	  }
	}

	GET test/_settings
	GET _all/_settings
	GET .kibana,test/_settings

	#修改setting
	PUT test/_settings
	{
	  "number_of_replicas": 1
	}
	
	#shards必须一开始设置好，后期不能改 
	PUT test/_settings
	{
	 "number_of_shards":6
	}

	GET _all
	GET test
	
	#保存文档
	PUT test/job/1
	{
		"title":"python分布式爬虫开发",
		"salary_min":15000,
		"city":"北京",
		"company":
			{
			"name":"BaiDu",
			"company_addr":"BeiJing"
			},
		"publish_date":"2017-4-16",
		"comments":15
		}
	
	
	
	POST test/job/
	{
		"title":"elasticsearch",
		"salary_min":15000,
		"city":"HangZhou",
		"company":
			{
			"name":"AliBaBa",
			"company_addr":"HangZhou"
			},
		"publish_date":"2017-4-16",
		"comments":15
		}
	
	GET test/job/1
	
	GET test/job/1?_source=title,city
	GET test/job/1?_source
	
	
	#修改文章
	PUT test/job/1
	{
		"title":"python分布式爬虫开发",
		"salary_min":15000,
		"company":
			{
			"name":"BaiDu",
			"company_addr":"BeiJing"
			},
		"publish_date":"2017-4-16",
		"comments":20
		}
		
	POS test/job/1/_update
	{
	  "doc":{
	    "comments":30
	  }
	  
	}
	
	#删除
	DELETE  test/job/1
	DELETE test/job
	DELETE test

bulk批量操作

批量导入可以合并多个操作，比如index，delete，update，create等等。也可以帮助从一个索引导入到另一个索引。

bulk批量添加索引 示例：

POST _bulk
		{"index":{"_index":"test2","_type":"job2","_id":"2"}}
		{"tittle":"python分布式爬虫开发","publish_date":"2017-4-16","comments":15}
		{"index":{"_index":"test2","_type":"job3","_id":"3"}}
		{"tittle":"python django开发","publish_date":"2017-4-18","comments":50}

两行构成一个数据，不可再多添加换行符，否则出错；
delete行为只有一行。

本文地址：https://blog.csdn.net/weixin_43933037/article/details/85964314