elasticsearch 常见操作

1、索引副本拷贝

post http://IP:9200/_reindex
{
  "source": {
    "index": "original_index"
  },
  "dest": {
    "index": "new_index"
  }

}

2、索引别名切换：

POST http://IP:9200/_aliases
{
    "actions":[
        {
            "add":{
                "index":"new_index",
                "alias":"t_simple_dict"
            }
        },
            {
            "remove":{
                "index":"old_index",
                "alias":"t_simple_dict"
            }
        }
    ]
}

 3、分桶上限设置：

put http://IP:9200/_cluster/settings
{
"persistents":{
"search.max_buckets":1000000
}
}

 4、分桶统计查询

post  http://IP:9200/index_data/_search

{   "size":0,
    "query": {
        "match_all": {}
    },
    "aggs": {
        "group_name1": {
            "terms": {
                "size": 20000,
                "field": "field_name.keyword",
                "min_doc_count": 15
            }
        }
    }
}