Elasticsearch 别名

野性酷女 2023-01-15 02:24 122阅读 0赞

别名，相当于索引的软连接，一个索引可以由多个别名，一个别名也可以指向多个索引。

# 查询nba索引的别名
    GET /nba/_alias
    
    # 查询所有索的别名
    GET /_alias
    
    # 给索引nba新增别名
    POST /_aliases
    {
      "actions": [
        {
          "add": {
            "index": "nba",
            "alias": "nba_v1.0"
          }
        }
      ]
    }
    
    # 给索引nba新增别名
    POST /nba/_alias/nba_v1.1
    
    # 给索引nba删除别名
    POST /_aliases
    {
      "actions": [
        {
          "remove": {
            "index": "nba",
            "alias": "nba_v1.0"
          }
        }
      ]
    }
    
    # 给索引nba删除别名
    DELETE /nba/_alias/nba_v1.1
    
    # 给索引nba的某个别名进行重命名
    POST /_aliases
    {
      "actions": [
        {
          "remove": {
            "index": "nba",
            "alias": "nba_v1.0"
          }
        },
        {
          "add": {
            "index": "nba",
            "alias": "nba_v2.0"
          }
        }
      ]
    }
    
    put wnba
    
    #为多个索引指定同一个别名
    POST /_aliases
    {
      "actions": [
        {
          "add": {
            "index": "nba",
            "alias": "national_player"
          }
        },
        {
          "add": {
            "index": "wnba",
            "alias": "national_player"
          }
        }
      ]
    }
    
    # 为同一个索引指定多个别名
    POST /_aliases
    {
      "actions": [
        {
          "add": {
            "index": "nba",
            "alias": "nba_v2.1"
          }
        },
        {
          "add": {
            "index": "nba",
            "alias": "nba_v2.2"
          }
        }
      ]
    }
    
    # 通过别名读取索引
    GET /nba_v2.1
    
    # 通过别名读取索引，别名绑定多个索引会查询多个索引
    GET /national_player
    
    # 通过别名写索引
    POST /nba_v2.1/_doc/566
    {
     "countryEn": "Croatia",
     "teamName": "快船",
     "birthDay": 858661200000,
     "country": "克罗地亚",
     "teamCityEn": "LA",
     "code": "ivica_zubac",
     "displayAffiliation": "Croatia",
     "displayName": "伊维察 祖巴茨哥哥",
     "schoolType": "",
     "teamConference": "⻄部",
     "teamConferenceEn": "Western",
     "weight": "108.9 公⽄",
     "teamCity": "洛杉矶",
     "playYear": 3,
     "jerseyNo": "40",
     "teamNameEn": "Clippers",
     "draft": 2016,
     "displayNameEn": "Ivica Zubac",
     "heightValue": 2.16,
     "birthDayStr": "1997-03-18",
     "position": "中锋",
     "age": 22,
     "playerId": "1627826"
    }
    
    # 当别名绑定了多个索引，可以is_write_index指定向哪个索引写入文档
    POST /_aliases
    {
      "actions": [
        {
          "add": {
            "index": "nba",
            "alias": "national_player",
            "is_write_index": true
          }
        },
        {
          "add": {
            "index": "wnba",
            "alias": "national_player"
          }
        }
      ]
    }
    
    # 使用别名写入文档
    POST /national_player/_doc/566
    {
     "countryEn": "Croatia",
     "teamName": "快船",
     "birthDay": 858661200000,
     "country": "克罗地亚",
     "teamCityEn": "LA",
     "code": "ivica_zubac",
     "displayAffiliation": "Croatia",
     "displayName": "伊维察 祖巴茨妹妹",
     "schoolType": "",
     "teamConference": "⻄部",
     "teamConferenceEn": "Western",
     "weight": "108.9 公⽄",
     "teamCity": "洛杉矶",
     "playYear": 3,
     "jerseyNo": "40",
     "teamNameEn": "Clippers",
     "draft": 2016,
     "displayNameEn": "Ivica Zubac",
     "heightValue": 2.16,
     "birthDayStr": "1997-03-18",
     "position": "中锋",
     "age": 22,
     "playerId": "1627826"
    }
    
    # 因为这个别名绑定了多个索引，此时查询会报错
    get /national_player/_doc/566