elasticsearch老数据库新建索引python代码
from elasticsearch import Elasticsearch
# 连接到本地Elasticsearch实例，默认端口为9200
es = Elasticsearch()
# 创建一个新的索引名
new_index_name = 'new_cars'
old_index_name = 'my_index'
# 定义映射和设置分词器
mapping = {
"mappings": {
"properties": {
"title": {"type": "text", "analyzer": "ik_max_word", "search_analyzer": "ik_smart"},
"content": {"type": "text", "analyzer": "ik_max_word", "search_analyzer": "ik_smart"}
}
}
}
# 创建新的索引，并将cars索引中的数据复制到新索引
es.indices.create(index=new_index_name, body=mapping)
es.reindex(body={"source": {"index": old_index_name}, "dest": {"index": new_index_name}})
# 删除原来的cars索引
es.indices.delete(index=old_index_name)总结：新建个索引及分词，然后把以前的老数据复制进去，然后把老数据删除
