版本说明

本文基于Elasticsearch6.4.0版本

创建索引

PUT /order

返回如下信息，则表示创建成功

{
     "acknowledged": true,  "shards_acknowledged": true,  "index": "order"}

查询索引信息

GET /order

索引信息

{
     "order": {
       "aliases": {
   },    "mappings": {
   },    "settings": {
         "index": {
           "creation_date": "1618916346622",        "number_of_shards": "5",        "number_of_replicas": "1",        "uuid": "c89QFkZKSK2m5FhiaS8crA",        "version": {
             "created": "6040099"        },        "provided_name": "order"      }    }  }}

Index Settings

指定一些index设置的索引，比如指定number_of_replicas（副本）为2，number_of_shards（分片）为3。

如不指定，默认副本为1，分片为5。

PUT /order{
     "settings": {
       "number_of_replicas": 2,    "number_of_shards": 3  }}

查看索引

GET /order

索引信息

{
     "order": {
       "aliases": {
   },    "mappings": {
   },    "settings": {
         "index": {
           "creation_date": "1618916387112",        "number_of_shards": "3",        "number_of_replicas": "2",        "uuid": "qnaUfiSyQsSgO6IF58i2Xw",        "version": {
             "created": "6040099"        },        "provided_name": "order"      }    }  }}

Mappings

建立索引时，同时指定mapping

如下表示，创建一个名为emp的索引，并定义了索引中有一个name字段，类型为keyword

PUT /emp{
     "mappings": {
       "_doc":{
         "properties":{
           "name":{
   "type":"keyword"}      }    }  }}

查看索引下的mapping信息

GET /emp/_mapping/

索引下的mapping信息

{
     "emp": {
       "mappings": {
         "_doc": {
           "properties": {
             "name": {
               "type": "keyword"          }        }      }    }  }}

删除索引

DELETE /order

返回如下信息表示删除成功

{
     "acknowledged": true}

也可以直接删除所有索引

DELETE /*

查看索引是否存在，如果存在返回 200 - OK，否则返回 404 - Not Found

HEAD /order

关闭索引

POST /my_index/_close

再查询时，报索引被关闭的错误

{
     "error": {
       "root_cause": [      {
           "type": "index_closed_exception",        "reason": "closed",        "index_uuid": "ixA8QpgLQDOaOj09Amm3dw",        "index": "emp"      }    ],    "type": "index_closed_exception",    "reason": "closed",    "index_uuid": "ixA8QpgLQDOaOj09Amm3dw",    "index": "emp"  },  "status": 400}