elasticSearch-索引详解-es的基本使用

Love The Way You Lie 2022-12-09 11:55 134阅读 0赞

### 文章导航 ###

*  查看先关信息
 *   *  查看健康状况
     *  查看所有索引
 *  创建索引
 *  索引&查询一个文档
 *   *  索引一个文档到hero索引中
     *  查询所有文档

# 查看先关信息 #

## 查看健康状况 ##

通过cat命令可以查看所有能查看的信息

> http://localhost:9200/\_cat

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center]  
**查看集群健康状况**

> http://localhost:9200/\_cat/health?v

*  \_cat/health即可查看集群的健康状态
 *  ?号后面的v, 是用来要求在返回结果找那个返回表头

![在这里插入图片描述][20200922140609936.png_pic_center]  
其中状态值status,有三种不同状态

1.  Green - everything is good (cluster is fully functional)
2.  Yellow - all data is available but some replicas are not yet allocated (cluster is fully functional)
3.  Red - some data is not available for whatever reason (cluster is partially functional)

## 查看所有索引 ##

> http://localhost:9200/\_cat/indices?v

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center 1]

# 创建索引 #

打开请求工具,这儿使用的是kibana

**创建一个索引**

> PUT /hero?pretty

*  创建一个名为 hero的索引
 *  pretty要求返回一个漂亮的 json 结果

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center 2]

**再查看一下所有索引**

> GET /\_cat/indices?v  
> ![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center 3]

# 索引&查询一个文档 #

## 索引一个文档到hero索引中 ##

> PUT /hero/\_doc/1?pretty  
> \{  
> “name”: “Ya Suo”  
> \}

*  url中的1就是文档的id值,在\_doc/后面的指定

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center 4]  
从hero索引中获取指定id的文档

> curl -X GET “localhost:9200/hero/\_doc/1?pretty”

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center 5]

## 查询所有文档 ##

命令格式:

> GET /customer/\_search?q=\*&sort=name:asc&pretty

举例:

> GET /hero/\_search  
> \{  
> “query”: \{ “match\_all”: \{\} \},  
> “sort”: \[  
> \{“name”: “asc” \}  
> \]  
> \}

![在这里插入图片描述][watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3FxXzQyODE1MTIy_size_16_color_FFFFFF_t_70_pic_center 6]

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