标签：rds 技术 shard res 另一个 failed ati date str
ElasticSearch是基于索引的，所以在操作文档之前先创建索引。下面是Kibana的操作界面：
1、添加索引：PUT
PUT /lib/
{
"settings":{
"index":{
"number_of_shards":3,
"number_of_replicas":0
}
}
}
索引名是lib
分片数number_of_shards是3，分片数一旦确定是不能修改
备份数量number_of_replicas是0
2、使用默认配置创建索引：
创建一个索引名是lib2的索引
PUT lib2
3、查看索引信息：GET
GET lib/_settings
1 { 2 "lib": { 3 "settings": { 4 "index": { 5 "creation_date": "1566687468270", 6 "number_of_shards": "3", 7 "number_of_replicas": "0", 8 "uuid": "UVAIaBtTTOu4OlGirLs_hg", 9 "version": { 10 "created": "6020499" 11 }, 12 "provided_name": "lib" 13 } 14 } 15 } 16 }
与创建时一样分片数是3，备份数是0。
查看一下默认创建的索引，分片数默认是5，备份数默认是1，如下：
GET lib2/_settings
1 { 2 "lib2": { 3 "settings": { 4 "index": { 5 "creation_date": "1566688286573", 6 "number_of_shards": "5", 7 "number_of_replicas": "1", 8 "uuid": "XEDTNi2STmC-gjYWCGo0Fw", 9 "version": { 10 "created": "6020499" 11 }, 12 "provided_name": "lib2" 13 } 14 } 15 } 16 }
4、查看所有索引：GET _all/_settings，结果如下，上面共建立了2个索引。
1 { 2 "lib": { 3 "settings": { 4 "index": { 5 "creation_date": "1566687468270", 6 "number_of_shards": "3", 7 "number_of_replicas": "0", 8 "uuid": "UVAIaBtTTOu4OlGirLs_hg", 9 "version": { 10 "created": "6020499" 11 }, 12 "provided_name": "lib" 13 } 14 } 15 }, 16 "lib2": { 17 "settings": { 18 "index": { 19 "creation_date": "1566688286573", 20 "number_of_shards": "5", 21 "number_of_replicas": "1", 22 "uuid": "XEDTNi2STmC-gjYWCGo0Fw", 23 "version": { 24 "created": "6020499" 25 }, 26 "provided_name": "lib2" 27 } 28 } 29 } 30 }
5、添加文档
添加文档类似于向数据库中添加记录
使用PUT添加文档，如下：
PUT /lib/user/1 { "first_name":"Jane", "last_name":"Smith", "age":32, "about":"I like to collect rock albums", "interests":[ "music" ] }
其中lib是创建的索引，user是类型名，1是添加的文档的id，使用PUT添加文档必须要有id。
如果使用POST添加文档，可以不指定id，elasticsearch会自己生成id，如下：
POST /lib/user/ { "first_name":"Fir", "age":23, "about":"I like to build cabinets", "interests":[ "forestry" ] }
生成结果如下，自动生成了id：RQn7xWwBihLrhcI-a2H7
{ "_index": "lib", "_type": "user", "_id": "RQn7xWwBihLrhcI-a2H7", "_version": 1, "result": "created", "_shards": { "total": 1, "successful": 1, "failed": 0 }, "_seq_no": 0, "_primary_term": 1 }
6、查询文档
GET /类型/id，如查询lib索引下类型是user，文档id是1的文档：GET /lib/user/1，显示所有字段
只查询需要的字段 GET /lib/user/1?_source=age,about
7、修改文档
修改文档有两种方法，一个是用PUT直接覆盖掉原来的， 另一个就是用POST只修改要改的部分。
第一中方法，将id为1的age修改为36：
1 PUT /lib/user/1 2 { 3 "first_name":"Jane", 4 "last_name":"Smith", 5 "age":36, 6 "about":"I like to collect rock albums", 7 "interests":[ "music" ] 8 }
第二中方法，将id为1的age修改为33：
1 POST /lib/user/1/_update 2 { 3 "doc":{ 4 "age":33 5 } 6 }
8、删除文档
1 DELETE /lib/user/1
9、删除索引
1 DELETE /lib2
（07）ElasticSearch 使用Kibana实现基增删改查
标签：rds 技术 shard res 另一个 failed ati date str
原文地址：https://www.cnblogs.com/javasl/p/11405353.html
