ElasticSearch学习笔记-索引构建

骑猪看日落 2022-05-31 08:26 195阅读 0赞

## installation ##

在mac下安装可以直接使用brew来进行：

> brew install elasticsearch

\#\# 基于界面的Front查询界面  
可以安装chrome 浏览器中的elasticsearch head插件来查看。  
另外也可以运行基于nodejs的head界面工具， 项目地址： [https://github.com/mobz/elasticsearch-head][https_github.com_mobz_elasticsearch-head]

## start-up ##

> elasticsearch

## check health ##

> curl -XGET ‘localhost:9200/\_cat/health?v&pretty’

![这里写图片描述][70]

## 检查当前索引 ##

> curl -XGET ‘localhost:9200/\_cat/indices?v’

输出结果：

> health status index uuid pri rep docs.count docs.deleted store.size pri.store.size

## 创建Index ##

> curl -XPUT ‘localhost:9200/customer?pretty&pretty’  
> \{  
> “acknowledged” : true,  
> “shards\_acknowledged” : true,  
> “index” : “customer”  
> \}

查询索引

> curl -XGET ‘localhost:9200/\_cat/indices?v&pretty’  
> health status index uuid pri rep docs.count docs.deleted store.size pri.store.size  
> yellow open customer xaeXHB2vTFuW20h\_Kpgslg 5 1 0 0 466b 466b

## 创建索引 ##

> curl -XPUT ‘localhost:9200/customer/\_doc/1?pretty&pretty’ -H ‘Content-Type: application/json’ -d’  
> \{  
> “name”: “John Doe”  
> \}  
> ’  
> 响应结果：  
> \{  
> “\_index” : “customer”,  
> “\_type” : “doc”,  
> “\_id” : “1”,  
> “\_version” : 1,  
> “result” : “created”,  
> “\_shards” : \{  
> “total” : 2,  
> “successful” : 1,  
> “failed” : 0  
> \},  
> “\_seq\_no” : 0,  
> “\_primary\_term” : 1  
> \}

查询新建的index：

> curl -XGET ‘localhost:9200/customer/doc/1?pretty&pretty’

输出响应是：

> \{  
> “\_index” : “customer”,  
> “\_type” : “doc”,  
> “\_id” : “1”,  
> “\_version” : 1,  
> “found” : true,  
> “\_source” : \{  
> “name” : “John Doe”  
> \}  
> \}

## 删除index ##

> curl -XDELETE ‘localhost:9200/customer?pretty’

输出响应为：

> \{  
> “acknowledged” : true  
> \}

## 修改index ##

> curl -XPUT ‘localhost:9200/customer/doc/2?pretty&pretty’ -H ‘Content-Type: application/json’ -d’  
> \{  
> “name”: “Jane acke”  
> \}  
> ’  
> \{  
> “\_index” : “customer”,  
> “\_type” : “doc”,  
> “\_id” : “2”,  
> “\_version” : 2,  
> “result” : “updated”,  
> “\_shards” : \{  
> “total” : 2,  
> “successful” : 1,  
> “failed” : 0  
> \},  
> “\_seq\_no” : 1,  
> “\_primary\_term” : 1  
> \}

重新查询修改之后的index：

> curl -XGET ‘localhost:9200/customer/doc/2?pretty’  
> \{  
> “\_index” : “customer”,  
> “\_type” : “doc”,  
> “\_id” : “2”,  
> “\_version” : 2,  
> “found” : true,  
> “\_source” : \{  
> “name” : “Jane acke”  
> \}  
> \}

## 修改document ##

> curl -XPOST ‘localhost:9200/customer/doc/1/\_update?pretty&pretty’ -H ‘Content-Type: application/json’ -d’  
> \{  
> “doc”: \{ “name”: “Jane Doe”, “age”: 20 \}  
> \}  
> ‘

修改的结果输出如下：

> \{  
> “\_index” : “customer”,  
> “\_type” : “doc”,  
> “\_id” : “1”,  
> “\_version” : 2,  
> “result” : “updated”,  
> “\_shards” : \{  
> “total” : 2,  
> “successful” : 1,  
> “failed” : 0  
> \},  
> “\_seq\_no” : 1,  
> “\_primary\_term” : 1  
> \}

重新查询doc/1的结果：

> curl -XGET ‘localhost:9200/customer/doc/1?pretty’  
> \{  
> “\_index” : “customer”,  
> “\_type” : “doc”,  
> “\_id” : “1”,  
> “\_version” : 2,  
> “found” : true,  
> “\_source” : \{  
> “name” : “Jane Doe”,  
> “age” : 20  
> \}  
> \}

[https_github.com_mobz_elasticsearch-head]: https://github.com/mobz/elasticsearch-head
[70]: /images/20220531/012cbfc6e73f4f1b99993fc96f410099.png