Elasticsearch 7：自定义 mapping 和 settings

#Elasticsearch 笔记

ES 7 中在创建索引时指定 Mapping

PUT school
{
  "mappings" : {
    "properties" : {
      "name" : {
        "type" : "keyword"
      }
    }
  }
}

响应：

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

然后可以通过GET school查询索引信息。

ES 7 中先建索引，再自定义 mapping

PUT school

PUT school/_mapping
{
    "properties" : {
      "name" : {
        "type" : "keyword"
      }
    }
}

ES 7 建索引时指定mapping和settings

比如创建索引时指定分片数和副本数：

PUT school
{
  "mappings" : {
    "properties" : {
      "name" : {
        "type" : "keyword"
      }
    }
  },
  "settings" : {
    "index" : {
      "number_of_shards" : 1,
      "number_of_replicas" : 2
    }
  }
}

ES 6 中在创建索引时指定 Mapping 和 Setting

因为 ES 7 之前的版本，一个index下支持多个type，所以mappings 下一层要指定 type。

PUT school
{
  "mappings" : {
    "student": {
      "properties" : {
        "name" : {
          "type" : "keyword"
        }
      }
    }
  },
  "settings" : {
    "index" : {
      "number_of_shards" : 1,
      "number_of_replicas" : 2
    }
  }
}