1、检测集群是否健康。

curl -XGET 'localhost:9200/_cat/health?v'

#后面加一个v表示让输出内容表格显示表头

绿色表示一切正常,黄色表示所有的数据可用但是部分副本还没有分配,红色表示部分数据因为某些原因不可用。

2、查看集群的的节点列表。

curl -XGET 'localhost:9200/_cat/nodes?v'

3、创建索引(方法一)

#创建一个名为demo_v1的索引
> curl -XPUT 'localhost:9200/demo_v1'   
{"acknowledged":true,"shards_acknowledged":true}%

默认的number_of_shards=5, number_of_replicas=1,

说明:number_of_shards表示设置一个索引的碎片数量,number_of_replicas表示设置一个索引可被复制的数量。这两个属性的设置直接影响集群中索引和搜索操作的执行。

假设你有足够的机器来持有碎片和复制品,那么可以按如下规则设置这两个值: 

1) 拥有更多的碎片可以提升索引执行能力,并允许通过机器分发一个大型的索引; 

2) 拥有更多的复制器能够提升搜索执行能力以及集群能力。 

对于一个索引来说,number_of_shards只能设置一次,而number_of_replicas可以使用索引更新设置API在任何时候被增加或者减少。 

4、创建索引(方法二)

#创建一个名为demo_v2的索引,并设置number_of_shards=3,number_of_replicas=2
curl -XPUT 'http://localhost:9200/demo_v2/' -d'{ "settings":{ "index":{ "number_of_shards":3, "number_of_replicas":2 } } }'

5、查看索引

#查看所有索引列表
>curl -XGET 'localhost:9200/_cat/indices?v'

health status index uuid pri rep docs.count docs.deleted store.size pri.store.size
yellow open test_v3 MBBLajV1RXynlf9AsRk-nQ 5 1 0 0 260b 260b
yellow open test_v1 nD02rWTqQO-vUaiM8fvolg 5 1 0 0 650b 650b
yellow open demo_v1 TItuViE3Qyu8qqqMMiLkAQ 5 1 0 0 795b 795b
yellow open english Y6Zwxj2cQPijI6NBOmGy9g 5 1 10010130 0 29gb 29gb
yellow open demo_v2 RmYvA8NdSOupXCS5VlXraA 3 2 0 0 390b 390b
yellow open test_v2 HBlEt6zCRomBnQYQrfcpuA 5 1 0 0 260b 260b


#查看索引demo_v1列表
curl -XGET 'localhost:9200/_cat/indices/demo_v1?v'
#查看索引demo_v1,demo_v2列表
curl -XGET 'localhost:9200/_cat/indices/demo_v1,demo_v2?v'

6、给索引设置别名

#给索引demo_v1设置别名demo 
curl -XPUT 'localhost:9200/demo_v1/_alias/demo' 
 
#给索引demo_v1设置别名demo 
curl -XPOST 'localhost:9200/_aliases?pretty' -d'{ 
  "actions" : [ 
  { "add" : { "index" : "demo_v1", "alias" : "demo"} } 
]}' 
 
#移除索引demo_v1的别名demo,并给索引demo_v2设置别名demo 
curl -XPOST 'localhost:9200/_aliases?pretty' -d'{ 
  "actions" : [ 
  { "remove" : { "index" : "demo_v1", "alias" : "demo" } }, 
  { "add" : { "index" : "demo_v2", "alias" : "demo" } } 
]}'

命令后面添加pretty表示漂亮的输出,也就是格式化输出

7、查看别名

#查看所有的别名 
curl -XGET 'localhost:9200/_alias/*' 
{"demo_v1":{"aliases":{"demo":{}}}}% 
#查看索引demo_v1的所有别名 
curl -XGET 'localhost:9200/demo_v1/_alias/*' 
{"demo_v1":{"aliases":{"demo":{}}}}%

8、删除索引

#删除索引test_v1 
curl -XDELETE 'localhost:9200/test_v1' 
#删除索引test_v2,test_v3 
curl -XDELETE 'localhost:9200/test_v2,test_v3'

9、查看索引的设置信息

#查看索引demo_v1的所有设置信息 
> curl -XGET 'localhost:9200/demo_v1?pretty' 
{ 
  "demo_v1" : { 
    "aliases" : { 
      "demo" : { } 
    }, 
    "mappings" : { }, 
    "settings" : { 
      "index" : { 
        "creation_date" : "1497955726944", 
        "number_of_shards" : "5", 
        "number_of_replicas" : "1", 
        "uuid" : "TItuViE3Qyu8qqqMMiLkAQ", 
        "version" : { 
          "created" : "5030099" 
        }, 
        "provided_name" : "demo_v1" 
      } 
    } 
  } 
} 
 
#查看索引demo_v1设置的基础信息 
curl -XGET 'localhost:9200/demo_v1/_settings?pretty' 
{ 
  "demo_v1" : { 
    "settings" : { 
      "index" : { 
        "creation_date" : "1497955726944", 
        "number_of_shards" : "5", 
        "number_of_replicas" : "1", 
        "uuid" : "TItuViE3Qyu8qqqMMiLkAQ", 
        "version" : { 
          "created" : "5030099" 
        }, 
        "provided_name" : "demo_v1" 
      } 
    } 
  } 
} 
 
#查看索引demo_v1设置的mapping信息 
curl -XGET 'localhost:9200/demo_v1/_mapping?pretty' 
{ 
  "demo_v1" : { 
    "mappings" : { } 
  } 
}

9、CRUD数据

#向索引demo_v1中添加几条数据(type=fruit添加3条数据,type=book添加两条数据) 
curl -XPOST 'localhost:9200/_bulk?pretty' -d' 
{ "index" : { "_index" : "demo_v1", "_type" : "fruit", "_id" : "1" }} 
{ "name" : "苹果"} 
{ "create" : { "_index" : "demo_v1", "_type" : "fruit", "_id" : "2" }} 
{ "name" : "香蕉"} 
{ "index" : { "_index" : "demo_v1", "_type" : "fruit", "_id" : "3" }} 
{ "name" : "西瓜"} 
{ "index" : { "_index" : "demo_v1", "_type" : "book", "_id" : "1" }} 
{ "name" : "深入浅出node.js" } 
{ "create" : { "_index" : "demo_v1", "_type" : "book", "_id" : "2" }} 
{ "name" : "你不知道的javascript" } 
' 
#查看索引demo_v1下的数据 
curl -XGET 'localhost:9200/demo_v1/_search?pretty' 
#查看索引demo_v1类型fruit下的数据 
curl -XGET 'localhost:9200/demo_v1/fruit/_search?pretty' 
#查看索引demo_v1类型fruit,类型book下的数据 
curl -XGET 'localhost:9200/demo_v1/fruit,book/_search?pretty'
#用别名查看demo_v1下的数据
curl -XGET 'localhost:9200/demo/_search?pretty' #删除索引=demo_v1类型=fruit下面id=2的数据 curl -XPOST 'localhost:9200/_bulk?pretty' -d' { "delete" : { "_index" : "demo_v1", "_type" : "fruit", "_id" : "2" }}'
或者操作
curl -XDELETE 'localhost:9200/demo_v1/fruit/2' #修改索引demo_v1类型fruit下面id=3的数据name字段 curl -XPOST 'localhost:9200/_bulk?pretty' -d' { "update" : {"_id" : "3", "_type":"fruit", "_index": "demo_v1"}} { "doc" : {"name":"草莓"}} '

10、自定义分词器

#如果索引demo_v6没有创建,可以直接创建并设置逗号分词器 
curl -XPUT 'localhost:9200/demo_v6' -d'{ 
  "settings": { 
    "index": { 
      "analysis": { 
        "analyzer": { 
          "douhao_analyzer": { 
            "pattern": ",", 
            "type": "pattern" 
          } 
        } 
      }, 
      "number_of_shards": "5", 
      "number_of_replicas": "1" 
    } 
  } 
}' 
 
#如果索引demo_v1已经存在,先关索引,再设置逗号分词器,然后打开索引 
curl -XPOST 'localhost:9200/omo_v1/_close' 
curl -XPUT 'localhost:9200/demo_v1/_settings' -d'{"analysis": 
    { 
      "analyzer": 
      { 
        "douhao_analyzer": 
        { 
          "type":"pattern", 
          "pattern":"," 
        } 
      } 
    }}' 
curl -XPOST 'localhost:9200/omo_v1/_open'

11、给索引设置mapping

#查看索引demo_v1的mapping设置( 没有手动设置的话采用系统默认设置,分词器默认standard分词(标准分词器)) 
curl -XGET 'localhost:9200/demo_v1/_mapping?pretty' 
{ 
  "demo_v1" : { 
    "mappings" : { 
      "book" : { 
        "properties" : { 
          "name" : { 
            "type" : "text", 
            "fields" : { 
              "keyword" : { 
                "type" : "keyword", 
                "ignore_above" : 256 
              } 
            } 
          } 
        } 
      }, 
      "fruit" : { 
        "properties" : { 
          "name" : { 
            "type" : "text", 
            "fields" : { 
              "keyword" : { 
                "type" : "keyword", 
                "ignore_above" : 256 
              } 
            } 
          } 
        } 
      } 
    } 
  } 
} 
 
#给索引demo_v1的mapping设置中fruit新增一个字段tag 
curl -XPOST 'localhost:9200/demo_v1/fruit/_mapping?pretty' -d '{ 
     "fruit": { 
                "properties": { 
                     "tag":{ 
                        "type":"text" 
                   } 
                } 
            } 
 }'

注意:已经设置好的mapping可以新增字段,但是对已经设置的字段是不能修改的。因为Elasticsearch底层使用的是lucene库,修改以后索引和搜索要涉及分词方式等操作,所以不允许修改。 

如果一个mapping设置过了,想要修改type或analyzer,通常的做法是新建一个索引,重新设置mapping,再把数据同步过来。


评论关闭
IT序号网

微信公众号号:IT虾米 (左侧二维码扫一扫)欢迎添加!