1. 索引

1.1 什么索引

一个索引就是一个拥有几分相似特征的文档的集合。比如说，你可以有一个客户数据的索引，另一个产品目录的索引，还有一个订单数据的索引。一个索引由一个名字来标识（必须全部是小写字母的），并且当我们要对对应于这个索引中的文档进行索引、搜索、更新和删除的时候，都要使用到这个名字；

1.2 命令操作

  1. # 查看所有索引
  2. GET /_cat/indices?v
  4. health status index                    uuid                   pri rep docs.count docs.deleted store.size pri.store.size
  5. yellow open   twitter                  c5JJhKzuS_CBv-q4xexdzw   3   2          1            0      4.6kb          4.6kb
  6. yellow open   movie                    SMGLbYkFRPierTNaNsbXng   3   1          3            0     13.1kb         13.1kb
  7. yellow open   weibo                    hqxawYAZTJqkKFkPQxMk4w   1   1          5            0      7.7kb          7.7kb
  8. yellow open   idx_locat                1CRshRsUTpKhe7Y4LEUbtg   3   2          2            0        9kb            9kb
  9. green  open   .kibana_task_manager_1   MEZeVn5IQ7im2X-ljPrWzA   1   0          2            0     21.8kb         21.8kb
  10. yellow open   my_index                 dHN-CBpySAeD6T29Bn-MSw   1   1          0            0       283b           283b
  11. green  open   .apm-agent-configuration GFZqnLa9TYOXw9MKYYD92Q   1   0          0            0       283b           283b
  12. green  open   .kibana_1                zDKttXRTQAGpd3jKp3webg   1   0          9            0     32.2kb         32.2kb
  1. # 创建索引
  2. PUT movie
  3. {
  4.     "settings": {
  5.         "number_of_shards": 3,
  6.         "number_of_replicas": 1
  7.     },
  8.     "mappings": {
  9.         "_doc": {
  10.             "properties": {
  11.                 "name": {
  12.                     "type": "text"
  13.                 },
  14.                 "type": {
  15.                     "type": "keyword"
  16.                 },
  17.                 "country": {
  18.                     "type": "text"
  19.                 },
  20.                 "director": {
  21.                     "type": "text"
  22.                 },
  23.                 "date": {
  24.                     "type": "date"
  25.                 }
  26.             }
  27.         }
  28.     }
  29. }
  1. # 删除索引
  2. DELETE weibo
  1. #插入数据 (1代表id，不写自动设置为默认值)
  2. POST movie/_doc/1
  3. {
  4.   "name":"Titanic",
  5.   "type":"romance",
  6.   "country":"America",
  7.   "director":"James",
  8.   "date":"1997-12-19"
  9. }
  1. # 查看ID为1的数据
  2. GET movie/_doc/1
  4. # 结果返回
  5. {
  6.   "_index" : "movie",
  7.   "_type" : "_doc",
  8.   "_id" : "1",
  9.   "_version" : 3,
  10.   "_seq_no" : 3,
  11.   "_primary_term" : 1,
  12.   "found" : true,
  13.   "_source" : {
  14.     "id" : "1",
  15.     "name" : "Titanic",
  16.     "type" : "Titanic",
  17.     "country" : "America",
  18.     "director" : "James",
  19.     "date" : "1997-12-19"
  20.   }
  21. }
  1. # 修改数据(修改id为1的director)
  2. POST movie/_doc/1
  3. {
  4.   "name":"Titanic",
  5.   "type":"romance",
  6.   "country":"America",
  7.   "director":"James-Cameron",
  8.   "date":"1997-12-19"
  9. }
  1. # 直接修改指定字段
  2. POST movie/_update/1
  3. {
  4.     "doc": {
  5.     "director":"Luc-Besson"
  6.   }
  7. }
  1. # 删除数据(删除id为1的数据)
  2. DELETE movie/_doc/1
  1. # 查询所有数据
  2. GET movie/_search